./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy7.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca28fc8-6909-41bf-895d-2decd5ae14de/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca28fc8-6909-41bf-895d-2decd5ae14de/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca28fc8-6909-41bf-895d-2decd5ae14de/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca28fc8-6909-41bf-895d-2decd5ae14de/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy7.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca28fc8-6909-41bf-895d-2decd5ae14de/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca28fc8-6909-41bf-895d-2decd5ae14de/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 89875838ba00841ab95f284d6aeb82a1a762d2b06c5f173202307480dc57b4e4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:21:48,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:21:48,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:21:48,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:21:48,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:21:48,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:21:48,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:21:48,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:21:48,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:21:48,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:21:48,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:21:48,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:21:48,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:21:48,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:21:48,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:21:48,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:21:48,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:21:48,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:21:48,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:21:48,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:21:48,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:21:48,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:21:48,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:21:48,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:21:48,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:21:48,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:21:48,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:21:48,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:21:48,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:21:48,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:21:48,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:21:48,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:21:48,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:21:48,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:21:48,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:21:48,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:21:48,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:21:48,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:21:48,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:21:48,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:21:48,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:21:48,880 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca28fc8-6909-41bf-895d-2decd5ae14de/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:21:48,934 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:21:48,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:21:48,935 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:21:48,936 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:21:48,937 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:21:48,937 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:21:48,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:21:48,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:21:48,939 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:21:48,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:21:48,941 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:21:48,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:21:48,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:21:48,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:21:48,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:21:48,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:21:48,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:21:48,943 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:21:48,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:21:48,944 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:21:48,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:21:48,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:21:48,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:21:48,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:21:48,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:21:48,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:21:48,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:21:48,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:21:48,947 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:21:48,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:21:48,948 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:21:48,948 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:21:48,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:21:48,949 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca28fc8-6909-41bf-895d-2decd5ae14de/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca28fc8-6909-41bf-895d-2decd5ae14de/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89875838ba00841ab95f284d6aeb82a1a762d2b06c5f173202307480dc57b4e4 [2022-11-20 11:21:49,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:21:49,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:21:49,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:21:49,337 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:21:49,338 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:21:49,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca28fc8-6909-41bf-895d-2decd5ae14de/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/test-easy7.wvr.c [2022-11-20 11:21:53,305 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:21:53,531 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:21:53,532 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca28fc8-6909-41bf-895d-2decd5ae14de/sv-benchmarks/c/weaver/test-easy7.wvr.c [2022-11-20 11:21:53,541 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca28fc8-6909-41bf-895d-2decd5ae14de/bin/uautomizer-ug76WZFUDN/data/b42b60ae2/cef1df33f0024c5d92f4c85ca0e01004/FLAGf1085f3ae [2022-11-20 11:21:53,560 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca28fc8-6909-41bf-895d-2decd5ae14de/bin/uautomizer-ug76WZFUDN/data/b42b60ae2/cef1df33f0024c5d92f4c85ca0e01004 [2022-11-20 11:21:53,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:21:53,566 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:21:53,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:21:53,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:21:53,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:21:53,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:21:53" (1/1) ... [2022-11-20 11:21:53,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc2a084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:53, skipping insertion in model container [2022-11-20 11:21:53,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:21:53" (1/1) ... [2022-11-20 11:21:53,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:21:53,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:21:53,889 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca28fc8-6909-41bf-895d-2decd5ae14de/sv-benchmarks/c/weaver/test-easy7.wvr.c[1872,1885] [2022-11-20 11:21:53,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:21:53,908 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:21:53,930 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca28fc8-6909-41bf-895d-2decd5ae14de/sv-benchmarks/c/weaver/test-easy7.wvr.c[1872,1885] [2022-11-20 11:21:53,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:21:53,957 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:21:53,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:53 WrapperNode [2022-11-20 11:21:53,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:21:53,959 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:21:53,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:21:53,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:21:53,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:53" (1/1) ... [2022-11-20 11:21:53,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:53" (1/1) ... [2022-11-20 11:21:54,002 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-11-20 11:21:54,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:21:54,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:21:54,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:21:54,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:21:54,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:53" (1/1) ... [2022-11-20 11:21:54,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:53" (1/1) ... [2022-11-20 11:21:54,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:53" (1/1) ... [2022-11-20 11:21:54,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:53" (1/1) ... [2022-11-20 11:21:54,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:53" (1/1) ... [2022-11-20 11:21:54,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:53" (1/1) ... [2022-11-20 11:21:54,051 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:53" (1/1) ... [2022-11-20 11:21:54,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:53" (1/1) ... [2022-11-20 11:21:54,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:21:54,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:21:54,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:21:54,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:21:54,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:53" (1/1) ... [2022-11-20 11:21:54,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:21:54,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca28fc8-6909-41bf-895d-2decd5ae14de/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:21:54,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca28fc8-6909-41bf-895d-2decd5ae14de/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:21:54,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca28fc8-6909-41bf-895d-2decd5ae14de/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:21:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:21:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:21:54,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:21:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:21:54,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:21:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:21:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:21:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:21:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:21:54,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:21:54,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:21:54,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:21:54,172 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:21:54,317 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:21:54,320 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:21:54,569 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:21:54,578 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:21:54,591 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:21:54,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:21:54 BoogieIcfgContainer [2022-11-20 11:21:54,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:21:54,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:21:54,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:21:54,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:21:54,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:21:53" (1/3) ... [2022-11-20 11:21:54,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667a8008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:21:54, skipping insertion in model container [2022-11-20 11:21:54,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:53" (2/3) ... [2022-11-20 11:21:54,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667a8008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:21:54, skipping insertion in model container [2022-11-20 11:21:54,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:21:54" (3/3) ... [2022-11-20 11:21:54,620 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy7.wvr.c [2022-11-20 11:21:54,631 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:21:54,645 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:21:54,645 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:21:54,645 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:21:54,777 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:21:54,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 94 transitions, 204 flow [2022-11-20 11:21:54,968 INFO L130 PetriNetUnfolder]: 2/92 cut-off events. [2022-11-20 11:21:54,973 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:21:54,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 92 events. 2/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2022-11-20 11:21:54,979 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 94 transitions, 204 flow [2022-11-20 11:21:54,988 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 83 transitions, 178 flow [2022-11-20 11:21:55,001 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:21:55,011 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3443e2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:21:55,011 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 11:21:55,050 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2022-11-20 11:21:55,050 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:21:55,051 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:21:55,052 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:21:55,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:21:55,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:21:55,060 INFO L85 PathProgramCache]: Analyzing trace with hash 126118782, now seen corresponding path program 1 times [2022-11-20 11:21:55,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:21:55,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543657739] [2022-11-20 11:21:55,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:55,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:21:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:57,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:21:57,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:21:57,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543657739] [2022-11-20 11:21:57,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543657739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:21:57,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:21:57,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:21:57,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318489966] [2022-11-20 11:21:57,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:21:57,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:21:57,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:21:57,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:21:57,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:21:57,897 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:21:57,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 83 transitions, 178 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:21:57,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:21:57,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:21:57,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:00,150 INFO L130 PetriNetUnfolder]: 179/515 cut-off events. [2022-11-20 11:22:00,151 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-11-20 11:22:00,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 515 events. 179/515 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2118 event pairs, 133 based on Foata normal form. 3/511 useless extension candidates. Maximal degree in co-relation 824. Up to 332 conditions per place. [2022-11-20 11:22:00,165 INFO L137 encePairwiseOnDemand]: 60/94 looper letters, 47 selfloop transitions, 28 changer transitions 34/148 dead transitions. [2022-11-20 11:22:00,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 148 transitions, 535 flow [2022-11-20 11:22:00,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:22:00,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:22:00,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1583 transitions. [2022-11-20 11:22:00,199 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5613475177304964 [2022-11-20 11:22:00,200 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1583 transitions. [2022-11-20 11:22:00,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1583 transitions. [2022-11-20 11:22:00,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:00,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1583 transitions. [2022-11-20 11:22:00,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.766666666666666) internal successors, (1583), 30 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:00,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:00,239 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:00,241 INFO L175 Difference]: Start difference. First operand has 88 places, 83 transitions, 178 flow. Second operand 30 states and 1583 transitions. [2022-11-20 11:22:00,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 148 transitions, 535 flow [2022-11-20 11:22:00,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 148 transitions, 521 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:22:00,254 INFO L231 Difference]: Finished difference. Result has 136 places, 103 transitions, 360 flow [2022-11-20 11:22:00,257 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=360, PETRI_PLACES=136, PETRI_TRANSITIONS=103} [2022-11-20 11:22:00,262 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 48 predicate places. [2022-11-20 11:22:00,262 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 103 transitions, 360 flow [2022-11-20 11:22:00,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:00,264 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:00,264 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:00,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:22:00,266 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:22:00,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:00,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1479619674, now seen corresponding path program 2 times [2022-11-20 11:22:00,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:00,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048020183] [2022-11-20 11:22:00,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:00,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:01,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:22:01,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:01,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048020183] [2022-11-20 11:22:01,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048020183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:01,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:01,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:22:01,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373931744] [2022-11-20 11:22:01,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:01,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:22:01,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:01,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:22:01,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:22:01,634 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:22:01,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 103 transitions, 360 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:01,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:01,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:22:01,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:03,667 INFO L130 PetriNetUnfolder]: 202/559 cut-off events. [2022-11-20 11:22:03,667 INFO L131 PetriNetUnfolder]: For 243/243 co-relation queries the response was YES. [2022-11-20 11:22:03,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1546 conditions, 559 events. 202/559 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2507 event pairs, 22 based on Foata normal form. 1/558 useless extension candidates. Maximal degree in co-relation 1515. Up to 329 conditions per place. [2022-11-20 11:22:03,677 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 82 selfloop transitions, 42 changer transitions 36/199 dead transitions. [2022-11-20 11:22:03,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 199 transitions, 1049 flow [2022-11-20 11:22:03,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 11:22:03,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-20 11:22:03,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1561 transitions. [2022-11-20 11:22:03,684 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5726338958180485 [2022-11-20 11:22:03,684 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1561 transitions. [2022-11-20 11:22:03,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1561 transitions. [2022-11-20 11:22:03,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:03,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1561 transitions. [2022-11-20 11:22:03,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.827586206896555) internal successors, (1561), 29 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:03,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:03,700 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:03,701 INFO L175 Difference]: Start difference. First operand has 136 places, 103 transitions, 360 flow. Second operand 29 states and 1561 transitions. [2022-11-20 11:22:03,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 199 transitions, 1049 flow [2022-11-20 11:22:03,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 199 transitions, 955 flow, removed 38 selfloop flow, removed 13 redundant places. [2022-11-20 11:22:03,714 INFO L231 Difference]: Finished difference. Result has 156 places, 139 transitions, 637 flow [2022-11-20 11:22:03,714 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=637, PETRI_PLACES=156, PETRI_TRANSITIONS=139} [2022-11-20 11:22:03,715 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 68 predicate places. [2022-11-20 11:22:03,716 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 139 transitions, 637 flow [2022-11-20 11:22:03,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:03,717 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:03,717 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:03,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:22:03,718 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:22:03,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:03,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1215992582, now seen corresponding path program 3 times [2022-11-20 11:22:03,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:03,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281243520] [2022-11-20 11:22:03,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:03,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:04,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:22:04,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:04,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281243520] [2022-11-20 11:22:04,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281243520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:04,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:04,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:22:04,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172858212] [2022-11-20 11:22:04,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:04,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:22:04,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:04,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:22:04,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:22:04,842 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:22:04,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 139 transitions, 637 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:04,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:04,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:22:04,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:07,874 INFO L130 PetriNetUnfolder]: 240/645 cut-off events. [2022-11-20 11:22:07,875 INFO L131 PetriNetUnfolder]: For 820/820 co-relation queries the response was YES. [2022-11-20 11:22:07,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2261 conditions, 645 events. 240/645 cut-off events. For 820/820 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3036 event pairs, 40 based on Foata normal form. 1/643 useless extension candidates. Maximal degree in co-relation 2220. Up to 401 conditions per place. [2022-11-20 11:22:07,886 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 102 selfloop transitions, 56 changer transitions 43/240 dead transitions. [2022-11-20 11:22:07,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 240 transitions, 1595 flow [2022-11-20 11:22:07,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 11:22:07,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-20 11:22:07,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2062 transitions. [2022-11-20 11:22:07,897 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5624659028914348 [2022-11-20 11:22:07,897 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2062 transitions. [2022-11-20 11:22:07,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2062 transitions. [2022-11-20 11:22:07,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:07,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2062 transitions. [2022-11-20 11:22:07,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.87179487179487) internal successors, (2062), 39 states have internal predecessors, (2062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:07,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:07,920 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:07,921 INFO L175 Difference]: Start difference. First operand has 156 places, 139 transitions, 637 flow. Second operand 39 states and 2062 transitions. [2022-11-20 11:22:07,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 240 transitions, 1595 flow [2022-11-20 11:22:07,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 240 transitions, 1454 flow, removed 66 selfloop flow, removed 11 redundant places. [2022-11-20 11:22:07,945 INFO L231 Difference]: Finished difference. Result has 201 places, 182 transitions, 1065 flow [2022-11-20 11:22:07,945 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1065, PETRI_PLACES=201, PETRI_TRANSITIONS=182} [2022-11-20 11:22:07,948 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 113 predicate places. [2022-11-20 11:22:07,949 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 182 transitions, 1065 flow [2022-11-20 11:22:07,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:07,950 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:07,951 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:07,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:22:07,951 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:22:07,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:07,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1665333946, now seen corresponding path program 4 times [2022-11-20 11:22:07,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:07,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160442475] [2022-11-20 11:22:07,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:07,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:22:09,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:09,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160442475] [2022-11-20 11:22:09,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160442475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:09,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:09,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:22:09,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122143292] [2022-11-20 11:22:09,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:09,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:22:09,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:09,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:22:09,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:22:09,062 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:22:09,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 182 transitions, 1065 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:09,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:09,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:22:09,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:11,160 INFO L130 PetriNetUnfolder]: 238/637 cut-off events. [2022-11-20 11:22:11,161 INFO L131 PetriNetUnfolder]: For 1487/1487 co-relation queries the response was YES. [2022-11-20 11:22:11,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2624 conditions, 637 events. 238/637 cut-off events. For 1487/1487 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2984 event pairs, 3 based on Foata normal form. 1/637 useless extension candidates. Maximal degree in co-relation 2564. Up to 403 conditions per place. [2022-11-20 11:22:11,171 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 111 selfloop transitions, 53 changer transitions 44/247 dead transitions. [2022-11-20 11:22:11,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 247 transitions, 1855 flow [2022-11-20 11:22:11,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 11:22:11,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-20 11:22:11,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1502 transitions. [2022-11-20 11:22:11,180 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5706686930091185 [2022-11-20 11:22:11,180 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1502 transitions. [2022-11-20 11:22:11,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1502 transitions. [2022-11-20 11:22:11,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:11,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1502 transitions. [2022-11-20 11:22:11,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 53.642857142857146) internal successors, (1502), 28 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:11,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 94.0) internal successors, (2726), 29 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:11,199 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 94.0) internal successors, (2726), 29 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:11,203 INFO L175 Difference]: Start difference. First operand has 201 places, 182 transitions, 1065 flow. Second operand 28 states and 1502 transitions. [2022-11-20 11:22:11,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 247 transitions, 1855 flow [2022-11-20 11:22:11,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 247 transitions, 1633 flow, removed 89 selfloop flow, removed 18 redundant places. [2022-11-20 11:22:11,234 INFO L231 Difference]: Finished difference. Result has 213 places, 187 transitions, 1114 flow [2022-11-20 11:22:11,235 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1114, PETRI_PLACES=213, PETRI_TRANSITIONS=187} [2022-11-20 11:22:11,237 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 125 predicate places. [2022-11-20 11:22:11,237 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 187 transitions, 1114 flow [2022-11-20 11:22:11,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:11,238 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:11,246 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:11,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:22:11,246 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:22:11,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:11,249 INFO L85 PathProgramCache]: Analyzing trace with hash 699227332, now seen corresponding path program 5 times [2022-11-20 11:22:11,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:11,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135157706] [2022-11-20 11:22:11,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:11,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:12,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:22:12,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:12,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135157706] [2022-11-20 11:22:12,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135157706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:12,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:12,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:22:12,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325380449] [2022-11-20 11:22:12,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:12,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:22:12,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:12,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:22:12,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:22:12,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:22:12,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 187 transitions, 1114 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:12,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:12,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:22:12,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:14,981 INFO L130 PetriNetUnfolder]: 261/695 cut-off events. [2022-11-20 11:22:14,981 INFO L131 PetriNetUnfolder]: For 1967/1967 co-relation queries the response was YES. [2022-11-20 11:22:14,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2995 conditions, 695 events. 261/695 cut-off events. For 1967/1967 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3364 event pairs, 20 based on Foata normal form. 1/694 useless extension candidates. Maximal degree in co-relation 2932. Up to 446 conditions per place. [2022-11-20 11:22:14,994 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 131 selfloop transitions, 61 changer transitions 43/274 dead transitions. [2022-11-20 11:22:14,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 274 transitions, 2242 flow [2022-11-20 11:22:14,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:22:14,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:22:14,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1861 transitions. [2022-11-20 11:22:15,000 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5656534954407295 [2022-11-20 11:22:15,000 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1861 transitions. [2022-11-20 11:22:15,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1861 transitions. [2022-11-20 11:22:15,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:15,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1861 transitions. [2022-11-20 11:22:15,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.17142857142857) internal successors, (1861), 35 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:15,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:15,027 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:15,027 INFO L175 Difference]: Start difference. First operand has 213 places, 187 transitions, 1114 flow. Second operand 35 states and 1861 transitions. [2022-11-20 11:22:15,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 274 transitions, 2242 flow [2022-11-20 11:22:15,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 274 transitions, 1993 flow, removed 66 selfloop flow, removed 24 redundant places. [2022-11-20 11:22:15,053 INFO L231 Difference]: Finished difference. Result has 234 places, 215 transitions, 1438 flow [2022-11-20 11:22:15,054 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1438, PETRI_PLACES=234, PETRI_TRANSITIONS=215} [2022-11-20 11:22:15,058 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 146 predicate places. [2022-11-20 11:22:15,059 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 215 transitions, 1438 flow [2022-11-20 11:22:15,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:15,060 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:15,060 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:15,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:22:15,061 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:22:15,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:15,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1519473010, now seen corresponding path program 6 times [2022-11-20 11:22:15,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:15,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472736270] [2022-11-20 11:22:15,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:15,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:22:16,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:16,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472736270] [2022-11-20 11:22:16,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472736270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:16,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:16,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:22:16,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629205680] [2022-11-20 11:22:16,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:16,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:22:16,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:16,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:22:16,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:22:16,076 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:22:16,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 215 transitions, 1438 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:16,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:16,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:22:16,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:18,210 INFO L130 PetriNetUnfolder]: 265/713 cut-off events. [2022-11-20 11:22:18,210 INFO L131 PetriNetUnfolder]: For 2399/2399 co-relation queries the response was YES. [2022-11-20 11:22:18,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3176 conditions, 713 events. 265/713 cut-off events. For 2399/2399 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3525 event pairs, 19 based on Foata normal form. 1/712 useless extension candidates. Maximal degree in co-relation 3104. Up to 459 conditions per place. [2022-11-20 11:22:18,225 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 126 selfloop transitions, 74 changer transitions 43/282 dead transitions. [2022-11-20 11:22:18,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 282 transitions, 2337 flow [2022-11-20 11:22:18,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:22:18,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 11:22:18,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1657 transitions. [2022-11-20 11:22:18,231 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5686341798215512 [2022-11-20 11:22:18,231 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1657 transitions. [2022-11-20 11:22:18,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1657 transitions. [2022-11-20 11:22:18,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:18,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1657 transitions. [2022-11-20 11:22:18,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.45161290322581) internal successors, (1657), 31 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:18,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:18,245 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:18,246 INFO L175 Difference]: Start difference. First operand has 234 places, 215 transitions, 1438 flow. Second operand 31 states and 1657 transitions. [2022-11-20 11:22:18,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 282 transitions, 2337 flow [2022-11-20 11:22:18,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 282 transitions, 2057 flow, removed 109 selfloop flow, removed 23 redundant places. [2022-11-20 11:22:18,277 INFO L231 Difference]: Finished difference. Result has 245 places, 224 transitions, 1536 flow [2022-11-20 11:22:18,277 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1536, PETRI_PLACES=245, PETRI_TRANSITIONS=224} [2022-11-20 11:22:18,278 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 157 predicate places. [2022-11-20 11:22:18,279 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 224 transitions, 1536 flow [2022-11-20 11:22:18,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:18,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:18,280 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:18,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:22:18,281 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:22:18,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:18,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1541157144, now seen corresponding path program 7 times [2022-11-20 11:22:18,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:18,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441588718] [2022-11-20 11:22:18,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:18,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:19,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:22:19,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:19,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441588718] [2022-11-20 11:22:19,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441588718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:19,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:19,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:22:19,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275903881] [2022-11-20 11:22:19,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:19,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:22:19,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:19,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:22:19,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:22:19,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:22:19,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 224 transitions, 1536 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:19,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:19,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:22:19,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:21,555 INFO L130 PetriNetUnfolder]: 264/746 cut-off events. [2022-11-20 11:22:21,556 INFO L131 PetriNetUnfolder]: For 2496/2496 co-relation queries the response was YES. [2022-11-20 11:22:21,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3276 conditions, 746 events. 264/746 cut-off events. For 2496/2496 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3738 event pairs, 27 based on Foata normal form. 1/745 useless extension candidates. Maximal degree in co-relation 3202. Up to 448 conditions per place. [2022-11-20 11:22:21,571 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 124 selfloop transitions, 76 changer transitions 44/283 dead transitions. [2022-11-20 11:22:21,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 283 transitions, 2405 flow [2022-11-20 11:22:21,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:22:21,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 11:22:21,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1658 transitions. [2022-11-20 11:22:21,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5689773507206589 [2022-11-20 11:22:21,577 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1658 transitions. [2022-11-20 11:22:21,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1658 transitions. [2022-11-20 11:22:21,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:21,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1658 transitions. [2022-11-20 11:22:21,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.483870967741936) internal successors, (1658), 31 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:21,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:21,590 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:21,590 INFO L175 Difference]: Start difference. First operand has 245 places, 224 transitions, 1536 flow. Second operand 31 states and 1658 transitions. [2022-11-20 11:22:21,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 283 transitions, 2405 flow [2022-11-20 11:22:21,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 283 transitions, 2194 flow, removed 48 selfloop flow, removed 26 redundant places. [2022-11-20 11:22:21,622 INFO L231 Difference]: Finished difference. Result has 255 places, 224 transitions, 1617 flow [2022-11-20 11:22:21,623 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1617, PETRI_PLACES=255, PETRI_TRANSITIONS=224} [2022-11-20 11:22:21,625 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 167 predicate places. [2022-11-20 11:22:21,625 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 224 transitions, 1617 flow [2022-11-20 11:22:21,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:21,626 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:21,626 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:21,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:22:21,627 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:22:21,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:21,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1783083334, now seen corresponding path program 8 times [2022-11-20 11:22:21,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:21,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004473731] [2022-11-20 11:22:21,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:21,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:22,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:22:22,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:22,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004473731] [2022-11-20 11:22:22,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004473731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:22,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:22,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:22:22,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209361605] [2022-11-20 11:22:22,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:22,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:22:22,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:22,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:22:22,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:22:22,587 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:22:22,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 224 transitions, 1617 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:22,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:22,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:22:22,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:24,644 INFO L130 PetriNetUnfolder]: 260/735 cut-off events. [2022-11-20 11:22:24,644 INFO L131 PetriNetUnfolder]: For 2603/2603 co-relation queries the response was YES. [2022-11-20 11:22:24,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3340 conditions, 735 events. 260/735 cut-off events. For 2603/2603 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3669 event pairs, 33 based on Foata normal form. 1/734 useless extension candidates. Maximal degree in co-relation 3261. Up to 456 conditions per place. [2022-11-20 11:22:24,660 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 126 selfloop transitions, 73 changer transitions 39/277 dead transitions. [2022-11-20 11:22:24,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 277 transitions, 2429 flow [2022-11-20 11:22:24,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:22:24,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:22:24,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1603 transitions. [2022-11-20 11:22:24,669 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5684397163120567 [2022-11-20 11:22:24,669 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1603 transitions. [2022-11-20 11:22:24,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1603 transitions. [2022-11-20 11:22:24,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:24,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1603 transitions. [2022-11-20 11:22:24,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.43333333333333) internal successors, (1603), 30 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:24,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:24,684 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:24,684 INFO L175 Difference]: Start difference. First operand has 255 places, 224 transitions, 1617 flow. Second operand 30 states and 1603 transitions. [2022-11-20 11:22:24,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 277 transitions, 2429 flow [2022-11-20 11:22:24,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 277 transitions, 2192 flow, removed 35 selfloop flow, removed 29 redundant places. [2022-11-20 11:22:24,724 INFO L231 Difference]: Finished difference. Result has 256 places, 223 transitions, 1629 flow [2022-11-20 11:22:24,725 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1629, PETRI_PLACES=256, PETRI_TRANSITIONS=223} [2022-11-20 11:22:24,728 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 168 predicate places. [2022-11-20 11:22:24,729 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 223 transitions, 1629 flow [2022-11-20 11:22:24,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:24,730 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:24,730 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:24,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:22:24,730 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:22:24,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:24,731 INFO L85 PathProgramCache]: Analyzing trace with hash -798716138, now seen corresponding path program 9 times [2022-11-20 11:22:24,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:24,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156481802] [2022-11-20 11:22:24,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:24,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:25,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:22:25,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:25,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156481802] [2022-11-20 11:22:25,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156481802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:25,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:25,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 11:22:25,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575608935] [2022-11-20 11:22:25,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:25,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:22:25,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:25,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:22:25,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:22:25,870 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:22:25,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 223 transitions, 1629 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:25,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:25,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:22:25,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:28,742 INFO L130 PetriNetUnfolder]: 261/743 cut-off events. [2022-11-20 11:22:28,743 INFO L131 PetriNetUnfolder]: For 2956/2956 co-relation queries the response was YES. [2022-11-20 11:22:28,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3420 conditions, 743 events. 261/743 cut-off events. For 2956/2956 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3705 event pairs, 25 based on Foata normal form. 1/743 useless extension candidates. Maximal degree in co-relation 3343. Up to 460 conditions per place. [2022-11-20 11:22:28,757 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 129 selfloop transitions, 94 changer transitions 29/291 dead transitions. [2022-11-20 11:22:28,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 291 transitions, 2637 flow [2022-11-20 11:22:28,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-20 11:22:28,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-20 11:22:28,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2205 transitions. [2022-11-20 11:22:28,763 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2022-11-20 11:22:28,763 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2205 transitions. [2022-11-20 11:22:28,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2205 transitions. [2022-11-20 11:22:28,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:28,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2205 transitions. [2022-11-20 11:22:28,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 52.5) internal successors, (2205), 42 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:28,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:28,781 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:28,781 INFO L175 Difference]: Start difference. First operand has 256 places, 223 transitions, 1629 flow. Second operand 42 states and 2205 transitions. [2022-11-20 11:22:28,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 291 transitions, 2637 flow [2022-11-20 11:22:28,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 291 transitions, 2381 flow, removed 68 selfloop flow, removed 28 redundant places. [2022-11-20 11:22:28,818 INFO L231 Difference]: Finished difference. Result has 273 places, 244 transitions, 1891 flow [2022-11-20 11:22:28,819 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1468, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1891, PETRI_PLACES=273, PETRI_TRANSITIONS=244} [2022-11-20 11:22:28,820 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 185 predicate places. [2022-11-20 11:22:28,820 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 244 transitions, 1891 flow [2022-11-20 11:22:28,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:28,822 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:28,822 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:28,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:22:28,823 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:22:28,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:28,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1392706964, now seen corresponding path program 10 times [2022-11-20 11:22:28,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:28,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692959075] [2022-11-20 11:22:28,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:28,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:29,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:22:29,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:29,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692959075] [2022-11-20 11:22:29,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692959075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:29,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:29,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:22:29,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785111143] [2022-11-20 11:22:29,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:29,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:22:29,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:29,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:22:29,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:22:29,754 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:22:29,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 244 transitions, 1891 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:29,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:29,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:22:29,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:31,802 INFO L130 PetriNetUnfolder]: 261/745 cut-off events. [2022-11-20 11:22:31,802 INFO L131 PetriNetUnfolder]: For 3283/3283 co-relation queries the response was YES. [2022-11-20 11:22:31,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3603 conditions, 745 events. 261/745 cut-off events. For 3283/3283 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3789 event pairs, 24 based on Foata normal form. 1/744 useless extension candidates. Maximal degree in co-relation 3521. Up to 477 conditions per place. [2022-11-20 11:22:31,819 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 138 selfloop transitions, 78 changer transitions 32/287 dead transitions. [2022-11-20 11:22:31,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 287 transitions, 2626 flow [2022-11-20 11:22:31,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 11:22:31,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 11:22:31,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1745 transitions. [2022-11-20 11:22:31,826 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5625402965828498 [2022-11-20 11:22:31,826 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1745 transitions. [2022-11-20 11:22:31,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1745 transitions. [2022-11-20 11:22:31,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:31,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1745 transitions. [2022-11-20 11:22:31,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.878787878787875) internal successors, (1745), 33 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:31,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:31,839 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:31,840 INFO L175 Difference]: Start difference. First operand has 273 places, 244 transitions, 1891 flow. Second operand 33 states and 1745 transitions. [2022-11-20 11:22:31,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 287 transitions, 2626 flow [2022-11-20 11:22:31,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 287 transitions, 2308 flow, removed 96 selfloop flow, removed 27 redundant places. [2022-11-20 11:22:31,883 INFO L231 Difference]: Finished difference. Result has 280 places, 241 transitions, 1804 flow [2022-11-20 11:22:31,884 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1623, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1804, PETRI_PLACES=280, PETRI_TRANSITIONS=241} [2022-11-20 11:22:31,884 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 192 predicate places. [2022-11-20 11:22:31,885 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 241 transitions, 1804 flow [2022-11-20 11:22:31,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:31,886 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:31,886 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:31,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:22:31,886 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:22:31,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:31,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1406267310, now seen corresponding path program 11 times [2022-11-20 11:22:31,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:31,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856887391] [2022-11-20 11:22:31,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:31,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:22:32,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:32,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856887391] [2022-11-20 11:22:32,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856887391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:32,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:32,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:22:32,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941250014] [2022-11-20 11:22:32,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:32,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:22:32,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:32,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:22:32,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:22:32,801 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:22:32,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 241 transitions, 1804 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:32,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:32,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:22:32,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:34,830 INFO L130 PetriNetUnfolder]: 251/705 cut-off events. [2022-11-20 11:22:34,830 INFO L131 PetriNetUnfolder]: For 2893/2893 co-relation queries the response was YES. [2022-11-20 11:22:34,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3435 conditions, 705 events. 251/705 cut-off events. For 2893/2893 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3435 event pairs, 22 based on Foata normal form. 1/705 useless extension candidates. Maximal degree in co-relation 3351. Up to 465 conditions per place. [2022-11-20 11:22:34,840 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 134 selfloop transitions, 75 changer transitions 26/274 dead transitions. [2022-11-20 11:22:34,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 274 transitions, 2427 flow [2022-11-20 11:22:34,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:22:34,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 11:22:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1639 transitions. [2022-11-20 11:22:34,845 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5624571036376115 [2022-11-20 11:22:34,846 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1639 transitions. [2022-11-20 11:22:34,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1639 transitions. [2022-11-20 11:22:34,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:34,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1639 transitions. [2022-11-20 11:22:34,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.87096774193548) internal successors, (1639), 31 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:34,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:34,858 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:34,858 INFO L175 Difference]: Start difference. First operand has 280 places, 241 transitions, 1804 flow. Second operand 31 states and 1639 transitions. [2022-11-20 11:22:34,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 274 transitions, 2427 flow [2022-11-20 11:22:34,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 274 transitions, 2189 flow, removed 25 selfloop flow, removed 33 redundant places. [2022-11-20 11:22:34,896 INFO L231 Difference]: Finished difference. Result has 274 places, 234 transitions, 1729 flow [2022-11-20 11:22:34,897 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1729, PETRI_PLACES=274, PETRI_TRANSITIONS=234} [2022-11-20 11:22:34,898 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 186 predicate places. [2022-11-20 11:22:34,898 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 234 transitions, 1729 flow [2022-11-20 11:22:34,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:34,899 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:34,899 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:34,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:22:34,900 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:22:34,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:34,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1692710944, now seen corresponding path program 12 times [2022-11-20 11:22:34,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:34,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815136067] [2022-11-20 11:22:34,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:34,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:22:35,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:35,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815136067] [2022-11-20 11:22:35,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815136067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:35,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:35,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:22:35,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094616392] [2022-11-20 11:22:35,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:35,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:22:35,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:35,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:22:35,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:22:35,835 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:22:35,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 234 transitions, 1729 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:35,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:35,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:22:35,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:37,938 INFO L130 PetriNetUnfolder]: 244/700 cut-off events. [2022-11-20 11:22:37,938 INFO L131 PetriNetUnfolder]: For 2595/2595 co-relation queries the response was YES. [2022-11-20 11:22:37,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3293 conditions, 700 events. 244/700 cut-off events. For 2595/2595 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3348 event pairs, 32 based on Foata normal form. 1/700 useless extension candidates. Maximal degree in co-relation 3212. Up to 460 conditions per place. [2022-11-20 11:22:37,958 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 130 selfloop transitions, 75 changer transitions 19/263 dead transitions. [2022-11-20 11:22:37,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 263 transitions, 2301 flow [2022-11-20 11:22:37,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:22:37,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 11:22:37,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1633 transitions. [2022-11-20 11:22:37,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.560398078242965 [2022-11-20 11:22:37,970 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1633 transitions. [2022-11-20 11:22:37,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1633 transitions. [2022-11-20 11:22:37,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:37,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1633 transitions. [2022-11-20 11:22:37,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.67741935483871) internal successors, (1633), 31 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:37,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:37,984 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:37,985 INFO L175 Difference]: Start difference. First operand has 274 places, 234 transitions, 1729 flow. Second operand 31 states and 1633 transitions. [2022-11-20 11:22:37,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 263 transitions, 2301 flow [2022-11-20 11:22:38,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 263 transitions, 2097 flow, removed 17 selfloop flow, removed 33 redundant places. [2022-11-20 11:22:38,020 INFO L231 Difference]: Finished difference. Result has 267 places, 231 transitions, 1700 flow [2022-11-20 11:22:38,021 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1700, PETRI_PLACES=267, PETRI_TRANSITIONS=231} [2022-11-20 11:22:38,022 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 179 predicate places. [2022-11-20 11:22:38,022 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 231 transitions, 1700 flow [2022-11-20 11:22:38,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:38,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:38,023 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:38,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:22:38,024 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:22:38,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:38,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1360263200, now seen corresponding path program 13 times [2022-11-20 11:22:38,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:38,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171153150] [2022-11-20 11:22:38,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:38,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:38,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:22:38,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:38,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171153150] [2022-11-20 11:22:38,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171153150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:38,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:38,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 11:22:38,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894261388] [2022-11-20 11:22:38,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:38,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:22:38,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:38,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:22:38,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:22:38,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:22:38,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 231 transitions, 1700 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:38,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:38,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:22:38,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:40,940 INFO L130 PetriNetUnfolder]: 238/686 cut-off events. [2022-11-20 11:22:40,940 INFO L131 PetriNetUnfolder]: For 2359/2359 co-relation queries the response was YES. [2022-11-20 11:22:40,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3181 conditions, 686 events. 238/686 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3219 event pairs, 35 based on Foata normal form. 1/685 useless extension candidates. Maximal degree in co-relation 3104. Up to 452 conditions per place. [2022-11-20 11:22:40,983 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 123 selfloop transitions, 65 changer transitions 26/253 dead transitions. [2022-11-20 11:22:40,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 253 transitions, 2225 flow [2022-11-20 11:22:40,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:22:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:22:40,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1677 transitions. [2022-11-20 11:22:40,988 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5575132978723404 [2022-11-20 11:22:40,988 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1677 transitions. [2022-11-20 11:22:40,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1677 transitions. [2022-11-20 11:22:40,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:40,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1677 transitions. [2022-11-20 11:22:40,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.40625) internal successors, (1677), 32 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:41,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:41,010 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:41,010 INFO L175 Difference]: Start difference. First operand has 267 places, 231 transitions, 1700 flow. Second operand 32 states and 1677 transitions. [2022-11-20 11:22:41,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 253 transitions, 2225 flow [2022-11-20 11:22:41,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 253 transitions, 2037 flow, removed 9 selfloop flow, removed 31 redundant places. [2022-11-20 11:22:41,043 INFO L231 Difference]: Finished difference. Result has 264 places, 215 transitions, 1558 flow [2022-11-20 11:22:41,044 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1558, PETRI_PLACES=264, PETRI_TRANSITIONS=215} [2022-11-20 11:22:41,046 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 176 predicate places. [2022-11-20 11:22:41,046 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 215 transitions, 1558 flow [2022-11-20 11:22:41,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:41,047 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:41,047 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:41,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:22:41,048 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:22:41,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:41,048 INFO L85 PathProgramCache]: Analyzing trace with hash 6627344, now seen corresponding path program 14 times [2022-11-20 11:22:41,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:41,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380126972] [2022-11-20 11:22:41,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:41,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:41,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:22:41,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:41,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380126972] [2022-11-20 11:22:41,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380126972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:41,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:41,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:22:41,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017986204] [2022-11-20 11:22:41,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:41,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:22:41,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:41,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:22:41,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:22:41,944 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:22:41,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 215 transitions, 1558 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:41,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:41,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:22:41,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:44,260 INFO L130 PetriNetUnfolder]: 260/745 cut-off events. [2022-11-20 11:22:44,261 INFO L131 PetriNetUnfolder]: For 2571/2571 co-relation queries the response was YES. [2022-11-20 11:22:44,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3362 conditions, 745 events. 260/745 cut-off events. For 2571/2571 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3750 event pairs, 38 based on Foata normal form. 1/743 useless extension candidates. Maximal degree in co-relation 3287. Up to 436 conditions per place. [2022-11-20 11:22:44,274 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 120 selfloop transitions, 83 changer transitions 42/284 dead transitions. [2022-11-20 11:22:44,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 284 transitions, 2512 flow [2022-11-20 11:22:44,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:22:44,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:22:44,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1861 transitions. [2022-11-20 11:22:44,279 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5656534954407295 [2022-11-20 11:22:44,279 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1861 transitions. [2022-11-20 11:22:44,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1861 transitions. [2022-11-20 11:22:44,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:44,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1861 transitions. [2022-11-20 11:22:44,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.17142857142857) internal successors, (1861), 35 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:44,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:44,292 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:44,292 INFO L175 Difference]: Start difference. First operand has 264 places, 215 transitions, 1558 flow. Second operand 35 states and 1861 transitions. [2022-11-20 11:22:44,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 284 transitions, 2512 flow [2022-11-20 11:22:44,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 284 transitions, 2221 flow, removed 45 selfloop flow, removed 29 redundant places. [2022-11-20 11:22:44,326 INFO L231 Difference]: Finished difference. Result has 256 places, 224 transitions, 1654 flow [2022-11-20 11:22:44,326 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1654, PETRI_PLACES=256, PETRI_TRANSITIONS=224} [2022-11-20 11:22:44,327 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 168 predicate places. [2022-11-20 11:22:44,328 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 224 transitions, 1654 flow [2022-11-20 11:22:44,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:44,328 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:44,329 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:44,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:22:44,329 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:22:44,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:44,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1409575526, now seen corresponding path program 15 times [2022-11-20 11:22:44,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:44,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034746496] [2022-11-20 11:22:44,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:44,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:22:45,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:45,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034746496] [2022-11-20 11:22:45,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034746496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:45,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:45,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:22:45,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398331144] [2022-11-20 11:22:45,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:45,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:22:45,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:45,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:22:45,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:22:45,220 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:22:45,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 224 transitions, 1654 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:45,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:45,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:22:45,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:47,317 INFO L130 PetriNetUnfolder]: 272/762 cut-off events. [2022-11-20 11:22:47,318 INFO L131 PetriNetUnfolder]: For 3720/3720 co-relation queries the response was YES. [2022-11-20 11:22:47,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3673 conditions, 762 events. 272/762 cut-off events. For 3720/3720 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3706 event pairs, 24 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 3596. Up to 458 conditions per place. [2022-11-20 11:22:47,334 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 138 selfloop transitions, 101 changer transitions 22/300 dead transitions. [2022-11-20 11:22:47,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 300 transitions, 2850 flow [2022-11-20 11:22:47,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:22:47,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:22:47,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1818 transitions. [2022-11-20 11:22:47,340 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5688360450563203 [2022-11-20 11:22:47,340 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1818 transitions. [2022-11-20 11:22:47,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1818 transitions. [2022-11-20 11:22:47,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:47,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1818 transitions. [2022-11-20 11:22:47,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.470588235294116) internal successors, (1818), 34 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:47,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:47,352 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:47,352 INFO L175 Difference]: Start difference. First operand has 256 places, 224 transitions, 1654 flow. Second operand 34 states and 1818 transitions. [2022-11-20 11:22:47,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 300 transitions, 2850 flow [2022-11-20 11:22:47,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 300 transitions, 2572 flow, removed 73 selfloop flow, removed 29 redundant places. [2022-11-20 11:22:47,395 INFO L231 Difference]: Finished difference. Result has 260 places, 251 transitions, 2016 flow [2022-11-20 11:22:47,396 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2016, PETRI_PLACES=260, PETRI_TRANSITIONS=251} [2022-11-20 11:22:47,397 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 172 predicate places. [2022-11-20 11:22:47,397 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 251 transitions, 2016 flow [2022-11-20 11:22:47,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:47,398 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:47,398 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:47,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:22:47,399 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:22:47,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:47,399 INFO L85 PathProgramCache]: Analyzing trace with hash 2084111022, now seen corresponding path program 16 times [2022-11-20 11:22:47,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:47,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806875871] [2022-11-20 11:22:47,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:47,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:48,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:22:48,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:48,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806875871] [2022-11-20 11:22:48,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806875871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:48,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:48,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:22:48,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713492496] [2022-11-20 11:22:48,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:48,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:22:48,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:48,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:22:48,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:22:48,244 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:22:48,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 251 transitions, 2016 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:48,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:48,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:22:48,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:50,018 INFO L130 PetriNetUnfolder]: 280/785 cut-off events. [2022-11-20 11:22:50,018 INFO L131 PetriNetUnfolder]: For 3938/3938 co-relation queries the response was YES. [2022-11-20 11:22:50,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3914 conditions, 785 events. 280/785 cut-off events. For 3938/3938 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3919 event pairs, 25 based on Foata normal form. 1/783 useless extension candidates. Maximal degree in co-relation 3839. Up to 487 conditions per place. [2022-11-20 11:22:50,033 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 151 selfloop transitions, 89 changer transitions 29/308 dead transitions. [2022-11-20 11:22:50,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 308 transitions, 3040 flow [2022-11-20 11:22:50,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 11:22:50,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-20 11:22:50,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1560 transitions. [2022-11-20 11:22:50,042 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5722670579603815 [2022-11-20 11:22:50,043 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1560 transitions. [2022-11-20 11:22:50,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1560 transitions. [2022-11-20 11:22:50,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:50,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1560 transitions. [2022-11-20 11:22:50,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.793103448275865) internal successors, (1560), 29 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:50,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:50,052 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:50,053 INFO L175 Difference]: Start difference. First operand has 260 places, 251 transitions, 2016 flow. Second operand 29 states and 1560 transitions. [2022-11-20 11:22:50,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 308 transitions, 3040 flow [2022-11-20 11:22:50,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 308 transitions, 2719 flow, removed 122 selfloop flow, removed 14 redundant places. [2022-11-20 11:22:50,106 INFO L231 Difference]: Finished difference. Result has 278 places, 259 transitions, 2077 flow [2022-11-20 11:22:50,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2077, PETRI_PLACES=278, PETRI_TRANSITIONS=259} [2022-11-20 11:22:50,107 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 190 predicate places. [2022-11-20 11:22:50,108 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 259 transitions, 2077 flow [2022-11-20 11:22:50,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:50,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:50,109 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:50,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:22:50,113 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:22:50,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:50,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2051877010, now seen corresponding path program 17 times [2022-11-20 11:22:50,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:50,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556758636] [2022-11-20 11:22:50,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:50,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:50,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:22:50,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:50,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556758636] [2022-11-20 11:22:50,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556758636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:50,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:50,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:22:50,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664548429] [2022-11-20 11:22:50,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:50,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:22:50,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:50,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:22:50,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:22:50,974 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:22:50,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 259 transitions, 2077 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:50,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:50,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:22:50,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:52,941 INFO L130 PetriNetUnfolder]: 278/784 cut-off events. [2022-11-20 11:22:52,941 INFO L131 PetriNetUnfolder]: For 4212/4212 co-relation queries the response was YES. [2022-11-20 11:22:52,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3998 conditions, 784 events. 278/784 cut-off events. For 4212/4212 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3944 event pairs, 25 based on Foata normal form. 1/782 useless extension candidates. Maximal degree in co-relation 3914. Up to 483 conditions per place. [2022-11-20 11:22:52,955 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 149 selfloop transitions, 85 changer transitions 35/308 dead transitions. [2022-11-20 11:22:52,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 308 transitions, 3007 flow [2022-11-20 11:22:52,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:22:52,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 11:22:52,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1658 transitions. [2022-11-20 11:22:52,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5689773507206589 [2022-11-20 11:22:52,960 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1658 transitions. [2022-11-20 11:22:52,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1658 transitions. [2022-11-20 11:22:52,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:52,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1658 transitions. [2022-11-20 11:22:52,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.483870967741936) internal successors, (1658), 31 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:52,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:52,970 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:52,970 INFO L175 Difference]: Start difference. First operand has 278 places, 259 transitions, 2077 flow. Second operand 31 states and 1658 transitions. [2022-11-20 11:22:52,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 308 transitions, 3007 flow [2022-11-20 11:22:53,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 308 transitions, 2721 flow, removed 64 selfloop flow, removed 27 redundant places. [2022-11-20 11:22:53,020 INFO L231 Difference]: Finished difference. Result has 286 places, 256 transitions, 2053 flow [2022-11-20 11:22:53,021 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2053, PETRI_PLACES=286, PETRI_TRANSITIONS=256} [2022-11-20 11:22:53,021 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 198 predicate places. [2022-11-20 11:22:53,021 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 256 transitions, 2053 flow [2022-11-20 11:22:53,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:53,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:53,022 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:53,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:22:53,023 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:22:53,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:53,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1422442310, now seen corresponding path program 18 times [2022-11-20 11:22:53,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:53,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878967147] [2022-11-20 11:22:53,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:53,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:22:53,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:53,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878967147] [2022-11-20 11:22:53,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878967147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:53,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:53,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:22:53,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221944262] [2022-11-20 11:22:53,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:53,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:22:53,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:53,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:22:53,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:22:53,820 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:22:53,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 256 transitions, 2053 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:53,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:53,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:22:53,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:55,765 INFO L130 PetriNetUnfolder]: 274/768 cut-off events. [2022-11-20 11:22:55,765 INFO L131 PetriNetUnfolder]: For 3948/3948 co-relation queries the response was YES. [2022-11-20 11:22:55,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3953 conditions, 768 events. 274/768 cut-off events. For 3948/3948 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3810 event pairs, 24 based on Foata normal form. 1/766 useless extension candidates. Maximal degree in co-relation 3868. Up to 481 conditions per place. [2022-11-20 11:22:55,781 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 147 selfloop transitions, 92 changer transitions 26/304 dead transitions. [2022-11-20 11:22:55,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 304 transitions, 2973 flow [2022-11-20 11:22:55,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:22:55,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:22:55,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1606 transitions. [2022-11-20 11:22:55,785 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5695035460992908 [2022-11-20 11:22:55,786 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1606 transitions. [2022-11-20 11:22:55,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1606 transitions. [2022-11-20 11:22:55,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:55,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1606 transitions. [2022-11-20 11:22:55,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.53333333333333) internal successors, (1606), 30 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:55,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:55,795 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:55,796 INFO L175 Difference]: Start difference. First operand has 286 places, 256 transitions, 2053 flow. Second operand 30 states and 1606 transitions. [2022-11-20 11:22:55,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 304 transitions, 2973 flow [2022-11-20 11:22:55,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 304 transitions, 2719 flow, removed 24 selfloop flow, removed 28 redundant places. [2022-11-20 11:22:55,841 INFO L231 Difference]: Finished difference. Result has 286 places, 259 transitions, 2104 flow [2022-11-20 11:22:55,841 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1826, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2104, PETRI_PLACES=286, PETRI_TRANSITIONS=259} [2022-11-20 11:22:55,842 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 198 predicate places. [2022-11-20 11:22:55,842 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 259 transitions, 2104 flow [2022-11-20 11:22:55,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:55,843 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:55,843 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:55,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:22:55,844 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:22:55,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:55,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2093389318, now seen corresponding path program 19 times [2022-11-20 11:22:55,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:55,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242806896] [2022-11-20 11:22:55,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:55,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:56,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:22:56,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:56,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242806896] [2022-11-20 11:22:56,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242806896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:56,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:56,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:22:56,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240498477] [2022-11-20 11:22:56,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:56,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:22:56,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:56,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:22:56,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:22:56,677 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:22:56,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 259 transitions, 2104 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:56,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:56,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:22:56,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:58,655 INFO L130 PetriNetUnfolder]: 280/787 cut-off events. [2022-11-20 11:22:58,656 INFO L131 PetriNetUnfolder]: For 4356/4356 co-relation queries the response was YES. [2022-11-20 11:22:58,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4093 conditions, 787 events. 280/787 cut-off events. For 4356/4356 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3991 event pairs, 26 based on Foata normal form. 1/784 useless extension candidates. Maximal degree in co-relation 4008. Up to 511 conditions per place. [2022-11-20 11:22:58,668 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 165 selfloop transitions, 78 changer transitions 30/312 dead transitions. [2022-11-20 11:22:58,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 312 transitions, 3125 flow [2022-11-20 11:22:58,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:22:58,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 11:22:58,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1651 transitions. [2022-11-20 11:22:58,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5665751544269046 [2022-11-20 11:22:58,673 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1651 transitions. [2022-11-20 11:22:58,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1651 transitions. [2022-11-20 11:22:58,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:58,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1651 transitions. [2022-11-20 11:22:58,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.25806451612903) internal successors, (1651), 31 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:58,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:58,683 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:58,683 INFO L175 Difference]: Start difference. First operand has 286 places, 259 transitions, 2104 flow. Second operand 31 states and 1651 transitions. [2022-11-20 11:22:58,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 312 transitions, 3125 flow [2022-11-20 11:22:58,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 312 transitions, 2890 flow, removed 47 selfloop flow, removed 26 redundant places. [2022-11-20 11:22:58,728 INFO L231 Difference]: Finished difference. Result has 297 places, 266 transitions, 2244 flow [2022-11-20 11:22:58,728 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2244, PETRI_PLACES=297, PETRI_TRANSITIONS=266} [2022-11-20 11:22:58,729 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 209 predicate places. [2022-11-20 11:22:58,729 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 266 transitions, 2244 flow [2022-11-20 11:22:58,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:58,730 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:58,730 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:58,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 11:22:58,730 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:22:58,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:58,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1511959520, now seen corresponding path program 20 times [2022-11-20 11:22:58,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:58,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298326296] [2022-11-20 11:22:58,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:58,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:22:59,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:59,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298326296] [2022-11-20 11:22:59,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298326296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:59,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:59,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:22:59,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458694999] [2022-11-20 11:22:59,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:59,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:22:59,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:59,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:22:59,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:22:59,589 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:22:59,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 266 transitions, 2244 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:59,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:59,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:22:59,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:23:01,576 INFO L130 PetriNetUnfolder]: 278/791 cut-off events. [2022-11-20 11:23:01,576 INFO L131 PetriNetUnfolder]: For 4502/4502 co-relation queries the response was YES. [2022-11-20 11:23:01,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4160 conditions, 791 events. 278/791 cut-off events. For 4502/4502 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4037 event pairs, 23 based on Foata normal form. 1/789 useless extension candidates. Maximal degree in co-relation 4069. Up to 503 conditions per place. [2022-11-20 11:23:01,588 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 155 selfloop transitions, 86 changer transitions 30/310 dead transitions. [2022-11-20 11:23:01,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 310 transitions, 3174 flow [2022-11-20 11:23:01,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:23:01,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:23:01,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1701 transitions. [2022-11-20 11:23:01,592 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5654920212765957 [2022-11-20 11:23:01,592 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1701 transitions. [2022-11-20 11:23:01,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1701 transitions. [2022-11-20 11:23:01,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:23:01,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1701 transitions. [2022-11-20 11:23:01,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.15625) internal successors, (1701), 32 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:01,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:01,602 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:01,602 INFO L175 Difference]: Start difference. First operand has 297 places, 266 transitions, 2244 flow. Second operand 32 states and 1701 transitions. [2022-11-20 11:23:01,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 310 transitions, 3174 flow [2022-11-20 11:23:01,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 310 transitions, 2977 flow, removed 39 selfloop flow, removed 26 redundant places. [2022-11-20 11:23:01,656 INFO L231 Difference]: Finished difference. Result has 304 places, 264 transitions, 2304 flow [2022-11-20 11:23:01,657 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2304, PETRI_PLACES=304, PETRI_TRANSITIONS=264} [2022-11-20 11:23:01,657 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 216 predicate places. [2022-11-20 11:23:01,658 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 264 transitions, 2304 flow [2022-11-20 11:23:01,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:01,658 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:23:01,659 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:01,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 11:23:01,659 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:23:01,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:01,660 INFO L85 PathProgramCache]: Analyzing trace with hash -462340898, now seen corresponding path program 21 times [2022-11-20 11:23:01,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:01,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080975699] [2022-11-20 11:23:01,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:01,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:02,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:02,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:02,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080975699] [2022-11-20 11:23:02,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080975699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:02,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:02,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:23:02,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114538793] [2022-11-20 11:23:02,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:02,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:23:02,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:02,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:23:02,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:23:02,450 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:23:02,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 264 transitions, 2304 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:02,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:23:02,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:23:02,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:23:04,411 INFO L130 PetriNetUnfolder]: 274/774 cut-off events. [2022-11-20 11:23:04,411 INFO L131 PetriNetUnfolder]: For 4678/4678 co-relation queries the response was YES. [2022-11-20 11:23:04,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4169 conditions, 774 events. 274/774 cut-off events. For 4678/4678 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3874 event pairs, 21 based on Foata normal form. 1/772 useless extension candidates. Maximal degree in co-relation 4077. Up to 472 conditions per place. [2022-11-20 11:23:04,419 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 151 selfloop transitions, 98 changer transitions 26/314 dead transitions. [2022-11-20 11:23:04,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 314 transitions, 3258 flow [2022-11-20 11:23:04,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:23:04,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 11:23:04,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1659 transitions. [2022-11-20 11:23:04,427 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5693205216197667 [2022-11-20 11:23:04,427 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1659 transitions. [2022-11-20 11:23:04,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1659 transitions. [2022-11-20 11:23:04,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:23:04,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1659 transitions. [2022-11-20 11:23:04,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.516129032258064) internal successors, (1659), 31 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:04,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:04,437 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:04,438 INFO L175 Difference]: Start difference. First operand has 304 places, 264 transitions, 2304 flow. Second operand 31 states and 1659 transitions. [2022-11-20 11:23:04,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 314 transitions, 3258 flow [2022-11-20 11:23:04,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 314 transitions, 3017 flow, removed 49 selfloop flow, removed 30 redundant places. [2022-11-20 11:23:04,493 INFO L231 Difference]: Finished difference. Result has 305 places, 267 transitions, 2388 flow [2022-11-20 11:23:04,494 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2109, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2388, PETRI_PLACES=305, PETRI_TRANSITIONS=267} [2022-11-20 11:23:04,495 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 217 predicate places. [2022-11-20 11:23:04,495 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 267 transitions, 2388 flow [2022-11-20 11:23:04,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:04,496 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:23:04,496 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:04,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 11:23:04,497 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:23:04,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:04,498 INFO L85 PathProgramCache]: Analyzing trace with hash 51004620, now seen corresponding path program 22 times [2022-11-20 11:23:04,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:04,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792240014] [2022-11-20 11:23:04,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:04,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:05,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:05,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:05,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792240014] [2022-11-20 11:23:05,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792240014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:05,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:05,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:23:05,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506852026] [2022-11-20 11:23:05,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:05,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:23:05,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:05,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:23:05,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:23:05,377 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:23:05,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 267 transitions, 2388 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:05,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:23:05,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:23:05,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:23:07,603 INFO L130 PetriNetUnfolder]: 275/773 cut-off events. [2022-11-20 11:23:07,603 INFO L131 PetriNetUnfolder]: For 4201/4201 co-relation queries the response was YES. [2022-11-20 11:23:07,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4227 conditions, 773 events. 275/773 cut-off events. For 4201/4201 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3859 event pairs, 22 based on Foata normal form. 1/771 useless extension candidates. Maximal degree in co-relation 4133. Up to 503 conditions per place. [2022-11-20 11:23:07,613 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 158 selfloop transitions, 86 changer transitions 29/312 dead transitions. [2022-11-20 11:23:07,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 312 transitions, 3292 flow [2022-11-20 11:23:07,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:23:07,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:23:07,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1848 transitions. [2022-11-20 11:23:07,618 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5617021276595745 [2022-11-20 11:23:07,619 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1848 transitions. [2022-11-20 11:23:07,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1848 transitions. [2022-11-20 11:23:07,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:23:07,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1848 transitions. [2022-11-20 11:23:07,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.8) internal successors, (1848), 35 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:07,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:07,629 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:07,629 INFO L175 Difference]: Start difference. First operand has 305 places, 267 transitions, 2388 flow. Second operand 35 states and 1848 transitions. [2022-11-20 11:23:07,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 312 transitions, 3292 flow [2022-11-20 11:23:07,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 312 transitions, 3022 flow, removed 33 selfloop flow, removed 28 redundant places. [2022-11-20 11:23:07,683 INFO L231 Difference]: Finished difference. Result has 313 places, 267 transitions, 2371 flow [2022-11-20 11:23:07,684 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2169, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2371, PETRI_PLACES=313, PETRI_TRANSITIONS=267} [2022-11-20 11:23:07,685 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 225 predicate places. [2022-11-20 11:23:07,685 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 267 transitions, 2371 flow [2022-11-20 11:23:07,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:07,686 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:23:07,686 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:07,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 11:23:07,686 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:23:07,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:07,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1553455864, now seen corresponding path program 23 times [2022-11-20 11:23:07,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:07,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286886771] [2022-11-20 11:23:07,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:07,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:08,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:08,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:08,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286886771] [2022-11-20 11:23:08,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286886771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:08,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:08,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:23:08,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233115596] [2022-11-20 11:23:08,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:08,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:23:08,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:08,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:23:08,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:23:08,498 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:23:08,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 267 transitions, 2371 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:08,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:23:08,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:23:08,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:23:10,534 INFO L130 PetriNetUnfolder]: 274/770 cut-off events. [2022-11-20 11:23:10,535 INFO L131 PetriNetUnfolder]: For 4314/4314 co-relation queries the response was YES. [2022-11-20 11:23:10,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4202 conditions, 770 events. 274/770 cut-off events. For 4314/4314 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3821 event pairs, 18 based on Foata normal form. 1/769 useless extension candidates. Maximal degree in co-relation 4113. Up to 492 conditions per place. [2022-11-20 11:23:10,545 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 158 selfloop transitions, 96 changer transitions 21/314 dead transitions. [2022-11-20 11:23:10,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 314 transitions, 3306 flow [2022-11-20 11:23:10,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:23:10,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:23:10,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1706 transitions. [2022-11-20 11:23:10,554 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.567154255319149 [2022-11-20 11:23:10,555 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1706 transitions. [2022-11-20 11:23:10,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1706 transitions. [2022-11-20 11:23:10,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:23:10,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1706 transitions. [2022-11-20 11:23:10,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.3125) internal successors, (1706), 32 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:10,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:10,564 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:10,564 INFO L175 Difference]: Start difference. First operand has 313 places, 267 transitions, 2371 flow. Second operand 32 states and 1706 transitions. [2022-11-20 11:23:10,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 314 transitions, 3306 flow [2022-11-20 11:23:10,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 314 transitions, 2999 flow, removed 43 selfloop flow, removed 31 redundant places. [2022-11-20 11:23:10,619 INFO L231 Difference]: Finished difference. Result has 314 places, 273 transitions, 2425 flow [2022-11-20 11:23:10,620 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2425, PETRI_PLACES=314, PETRI_TRANSITIONS=273} [2022-11-20 11:23:10,621 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 226 predicate places. [2022-11-20 11:23:10,621 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 273 transitions, 2425 flow [2022-11-20 11:23:10,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:10,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:23:10,622 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:10,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 11:23:10,623 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:23:10,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:10,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1348201146, now seen corresponding path program 24 times [2022-11-20 11:23:10,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:10,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979976517] [2022-11-20 11:23:10,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:10,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:11,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:11,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:11,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979976517] [2022-11-20 11:23:11,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979976517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:11,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:11,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:23:11,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391102067] [2022-11-20 11:23:11,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:11,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:23:11,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:11,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:23:11,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:23:11,404 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:23:11,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 273 transitions, 2425 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:11,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:23:11,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:23:11,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:23:13,273 INFO L130 PetriNetUnfolder]: 267/758 cut-off events. [2022-11-20 11:23:13,274 INFO L131 PetriNetUnfolder]: For 4154/4154 co-relation queries the response was YES. [2022-11-20 11:23:13,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4128 conditions, 758 events. 267/758 cut-off events. For 4154/4154 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3769 event pairs, 19 based on Foata normal form. 1/756 useless extension candidates. Maximal degree in co-relation 4036. Up to 496 conditions per place. [2022-11-20 11:23:13,283 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 159 selfloop transitions, 90 changer transitions 18/306 dead transitions. [2022-11-20 11:23:13,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 306 transitions, 3149 flow [2022-11-20 11:23:13,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:23:13,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:23:13,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1597 transitions. [2022-11-20 11:23:13,290 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5663120567375887 [2022-11-20 11:23:13,290 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1597 transitions. [2022-11-20 11:23:13,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1597 transitions. [2022-11-20 11:23:13,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:23:13,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1597 transitions. [2022-11-20 11:23:13,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.233333333333334) internal successors, (1597), 30 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:13,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:13,314 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:13,314 INFO L175 Difference]: Start difference. First operand has 314 places, 273 transitions, 2425 flow. Second operand 30 states and 1597 transitions. [2022-11-20 11:23:13,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 306 transitions, 3149 flow [2022-11-20 11:23:13,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 306 transitions, 2963 flow, removed 30 selfloop flow, removed 25 redundant places. [2022-11-20 11:23:13,372 INFO L231 Difference]: Finished difference. Result has 319 places, 270 transitions, 2436 flow [2022-11-20 11:23:13,373 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2247, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2436, PETRI_PLACES=319, PETRI_TRANSITIONS=270} [2022-11-20 11:23:13,373 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 231 predicate places. [2022-11-20 11:23:13,373 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 270 transitions, 2436 flow [2022-11-20 11:23:13,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:13,374 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:23:13,374 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:13,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 11:23:13,374 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:23:13,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:13,375 INFO L85 PathProgramCache]: Analyzing trace with hash 859753864, now seen corresponding path program 25 times [2022-11-20 11:23:13,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:13,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049961940] [2022-11-20 11:23:13,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:13,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:14,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:14,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049961940] [2022-11-20 11:23:14,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049961940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:14,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:14,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 11:23:14,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157094828] [2022-11-20 11:23:14,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:14,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:23:14,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:14,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:23:14,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:23:14,317 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:23:14,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 270 transitions, 2436 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:14,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:23:14,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:23:14,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:23:16,664 INFO L130 PetriNetUnfolder]: 268/769 cut-off events. [2022-11-20 11:23:16,664 INFO L131 PetriNetUnfolder]: For 4419/4419 co-relation queries the response was YES. [2022-11-20 11:23:16,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4238 conditions, 769 events. 268/769 cut-off events. For 4419/4419 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3855 event pairs, 21 based on Foata normal form. 1/766 useless extension candidates. Maximal degree in co-relation 4144. Up to 505 conditions per place. [2022-11-20 11:23:16,674 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 162 selfloop transitions, 90 changer transitions 15/306 dead transitions. [2022-11-20 11:23:16,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 306 transitions, 3292 flow [2022-11-20 11:23:16,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:23:16,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 11:23:16,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1892 transitions. [2022-11-20 11:23:16,679 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5591016548463357 [2022-11-20 11:23:16,679 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1892 transitions. [2022-11-20 11:23:16,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1892 transitions. [2022-11-20 11:23:16,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:23:16,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1892 transitions. [2022-11-20 11:23:16,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.55555555555556) internal successors, (1892), 36 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:16,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:16,689 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:16,689 INFO L175 Difference]: Start difference. First operand has 319 places, 270 transitions, 2436 flow. Second operand 36 states and 1892 transitions. [2022-11-20 11:23:16,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 306 transitions, 3292 flow [2022-11-20 11:23:16,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 306 transitions, 3036 flow, removed 19 selfloop flow, removed 31 redundant places. [2022-11-20 11:23:16,747 INFO L231 Difference]: Finished difference. Result has 325 places, 275 transitions, 2513 flow [2022-11-20 11:23:16,748 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2200, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2513, PETRI_PLACES=325, PETRI_TRANSITIONS=275} [2022-11-20 11:23:16,748 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 237 predicate places. [2022-11-20 11:23:16,749 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 275 transitions, 2513 flow [2022-11-20 11:23:16,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:16,749 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:23:16,749 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:16,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 11:23:16,750 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:23:16,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:16,751 INFO L85 PathProgramCache]: Analyzing trace with hash 671989096, now seen corresponding path program 26 times [2022-11-20 11:23:16,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:16,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589550673] [2022-11-20 11:23:16,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:16,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:17,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:17,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:17,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589550673] [2022-11-20 11:23:17,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589550673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:17,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:17,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:23:17,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944469011] [2022-11-20 11:23:17,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:17,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:23:17,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:17,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:23:17,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:23:17,668 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:23:17,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 275 transitions, 2513 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:17,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:23:17,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:23:17,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:23:19,768 INFO L130 PetriNetUnfolder]: 265/772 cut-off events. [2022-11-20 11:23:19,768 INFO L131 PetriNetUnfolder]: For 4743/4743 co-relation queries the response was YES. [2022-11-20 11:23:19,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4254 conditions, 772 events. 265/772 cut-off events. For 4743/4743 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3889 event pairs, 21 based on Foata normal form. 1/770 useless extension candidates. Maximal degree in co-relation 4158. Up to 505 conditions per place. [2022-11-20 11:23:19,785 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 161 selfloop transitions, 83 changer transitions 19/302 dead transitions. [2022-11-20 11:23:19,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 302 transitions, 3200 flow [2022-11-20 11:23:19,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 11:23:19,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 11:23:19,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1739 transitions. [2022-11-20 11:23:19,788 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2022-11-20 11:23:19,788 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1739 transitions. [2022-11-20 11:23:19,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1739 transitions. [2022-11-20 11:23:19,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:23:19,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1739 transitions. [2022-11-20 11:23:19,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.696969696969695) internal successors, (1739), 33 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:19,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:19,794 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:19,794 INFO L175 Difference]: Start difference. First operand has 325 places, 275 transitions, 2513 flow. Second operand 33 states and 1739 transitions. [2022-11-20 11:23:19,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 302 transitions, 3200 flow [2022-11-20 11:23:19,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 302 transitions, 2941 flow, removed 61 selfloop flow, removed 31 redundant places. [2022-11-20 11:23:19,838 INFO L231 Difference]: Finished difference. Result has 325 places, 268 transitions, 2421 flow [2022-11-20 11:23:19,839 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2282, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2421, PETRI_PLACES=325, PETRI_TRANSITIONS=268} [2022-11-20 11:23:19,840 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 237 predicate places. [2022-11-20 11:23:19,840 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 268 transitions, 2421 flow [2022-11-20 11:23:19,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:19,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:23:19,841 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:19,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 11:23:19,842 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:23:19,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:19,842 INFO L85 PathProgramCache]: Analyzing trace with hash 215089168, now seen corresponding path program 27 times [2022-11-20 11:23:19,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:19,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488867403] [2022-11-20 11:23:19,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:19,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:20,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:20,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:20,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488867403] [2022-11-20 11:23:20,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488867403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:20,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:20,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:23:20,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007779585] [2022-11-20 11:23:20,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:20,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:23:20,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:20,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:23:20,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:23:20,645 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:23:20,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 268 transitions, 2421 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:20,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:23:20,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:23:20,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:23:22,736 INFO L130 PetriNetUnfolder]: 269/771 cut-off events. [2022-11-20 11:23:22,736 INFO L131 PetriNetUnfolder]: For 4782/4782 co-relation queries the response was YES. [2022-11-20 11:23:22,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4328 conditions, 771 events. 269/771 cut-off events. For 4782/4782 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3881 event pairs, 21 based on Foata normal form. 1/769 useless extension candidates. Maximal degree in co-relation 4233. Up to 489 conditions per place. [2022-11-20 11:23:22,748 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 153 selfloop transitions, 98 changer transitions 25/315 dead transitions. [2022-11-20 11:23:22,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 315 transitions, 3372 flow [2022-11-20 11:23:22,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:23:22,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:23:22,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1805 transitions. [2022-11-20 11:23:22,752 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5647684605757196 [2022-11-20 11:23:22,752 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1805 transitions. [2022-11-20 11:23:22,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1805 transitions. [2022-11-20 11:23:22,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:23:22,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1805 transitions. [2022-11-20 11:23:22,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.088235294117645) internal successors, (1805), 34 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:22,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:22,762 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:22,762 INFO L175 Difference]: Start difference. First operand has 325 places, 268 transitions, 2421 flow. Second operand 34 states and 1805 transitions. [2022-11-20 11:23:22,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 315 transitions, 3372 flow [2022-11-20 11:23:22,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 315 transitions, 3126 flow, removed 18 selfloop flow, removed 33 redundant places. [2022-11-20 11:23:22,825 INFO L231 Difference]: Finished difference. Result has 326 places, 271 transitions, 2506 flow [2022-11-20 11:23:22,826 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2506, PETRI_PLACES=326, PETRI_TRANSITIONS=271} [2022-11-20 11:23:22,826 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 238 predicate places. [2022-11-20 11:23:22,827 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 271 transitions, 2506 flow [2022-11-20 11:23:22,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:22,827 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:23:22,828 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:22,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 11:23:22,828 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:23:22,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:22,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1302081822, now seen corresponding path program 28 times [2022-11-20 11:23:22,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:22,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399097923] [2022-11-20 11:23:22,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:22,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:23,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:23,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399097923] [2022-11-20 11:23:23,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399097923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:23,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:23,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:23:23,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217760881] [2022-11-20 11:23:23,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:23,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:23:23,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:23,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:23:23,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:23:23,588 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:23:23,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 271 transitions, 2506 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:23,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:23:23,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:23:23,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:23:25,388 INFO L130 PetriNetUnfolder]: 264/759 cut-off events. [2022-11-20 11:23:25,388 INFO L131 PetriNetUnfolder]: For 4909/4909 co-relation queries the response was YES. [2022-11-20 11:23:25,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4314 conditions, 759 events. 264/759 cut-off events. For 4909/4909 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3793 event pairs, 18 based on Foata normal form. 1/757 useless extension candidates. Maximal degree in co-relation 4216. Up to 465 conditions per place. [2022-11-20 11:23:25,396 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 147 selfloop transitions, 113 changer transitions 18/317 dead transitions. [2022-11-20 11:23:25,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 317 transitions, 3488 flow [2022-11-20 11:23:25,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 11:23:25,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-20 11:23:25,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1554 transitions. [2022-11-20 11:23:25,400 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.57006603081438 [2022-11-20 11:23:25,400 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1554 transitions. [2022-11-20 11:23:25,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1554 transitions. [2022-11-20 11:23:25,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:23:25,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1554 transitions. [2022-11-20 11:23:25,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.58620689655172) internal successors, (1554), 29 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:25,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:25,408 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:25,408 INFO L175 Difference]: Start difference. First operand has 326 places, 271 transitions, 2506 flow. Second operand 29 states and 1554 transitions. [2022-11-20 11:23:25,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 317 transitions, 3488 flow [2022-11-20 11:23:25,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 317 transitions, 3214 flow, removed 38 selfloop flow, removed 27 redundant places. [2022-11-20 11:23:25,470 INFO L231 Difference]: Finished difference. Result has 325 places, 277 transitions, 2617 flow [2022-11-20 11:23:25,471 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2250, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2617, PETRI_PLACES=325, PETRI_TRANSITIONS=277} [2022-11-20 11:23:25,472 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 237 predicate places. [2022-11-20 11:23:25,472 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 277 transitions, 2617 flow [2022-11-20 11:23:25,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:25,473 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:23:25,473 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:25,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-20 11:23:25,474 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:23:25,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:25,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1890809614, now seen corresponding path program 29 times [2022-11-20 11:23:25,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:25,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320602649] [2022-11-20 11:23:25,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:25,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:26,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:26,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320602649] [2022-11-20 11:23:26,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320602649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:26,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:26,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 11:23:26,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434833390] [2022-11-20 11:23:26,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:26,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:23:26,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:26,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:23:26,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:23:26,328 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:23:26,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 277 transitions, 2617 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:26,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:23:26,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:23:26,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:23:28,366 INFO L130 PetriNetUnfolder]: 260/739 cut-off events. [2022-11-20 11:23:28,366 INFO L131 PetriNetUnfolder]: For 4860/4860 co-relation queries the response was YES. [2022-11-20 11:23:28,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4240 conditions, 739 events. 260/739 cut-off events. For 4860/4860 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3606 event pairs, 20 based on Foata normal form. 1/737 useless extension candidates. Maximal degree in co-relation 4141. Up to 507 conditions per place. [2022-11-20 11:23:28,376 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 168 selfloop transitions, 64 changer transitions 29/300 dead transitions. [2022-11-20 11:23:28,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 300 transitions, 3242 flow [2022-11-20 11:23:28,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:23:28,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:23:28,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1681 transitions. [2022-11-20 11:23:28,386 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.558843085106383 [2022-11-20 11:23:28,387 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1681 transitions. [2022-11-20 11:23:28,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1681 transitions. [2022-11-20 11:23:28,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:23:28,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1681 transitions. [2022-11-20 11:23:28,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.53125) internal successors, (1681), 32 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:28,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:28,395 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:28,395 INFO L175 Difference]: Start difference. First operand has 325 places, 277 transitions, 2617 flow. Second operand 32 states and 1681 transitions. [2022-11-20 11:23:28,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 300 transitions, 3242 flow [2022-11-20 11:23:28,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 300 transitions, 2993 flow, removed 41 selfloop flow, removed 24 redundant places. [2022-11-20 11:23:28,464 INFO L231 Difference]: Finished difference. Result has 331 places, 257 transitions, 2275 flow [2022-11-20 11:23:28,464 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2374, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2275, PETRI_PLACES=331, PETRI_TRANSITIONS=257} [2022-11-20 11:23:28,465 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 243 predicate places. [2022-11-20 11:23:28,466 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 257 transitions, 2275 flow [2022-11-20 11:23:28,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:28,466 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:23:28,467 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:28,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-20 11:23:28,467 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:23:28,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:28,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1394251328, now seen corresponding path program 30 times [2022-11-20 11:23:28,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:28,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880717249] [2022-11-20 11:23:28,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:28,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:29,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:29,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880717249] [2022-11-20 11:23:29,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880717249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:29,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:29,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:23:29,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594756046] [2022-11-20 11:23:29,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:29,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:23:29,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:29,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:23:29,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:23:29,202 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:23:29,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 257 transitions, 2275 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:29,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:23:29,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:23:29,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:23:30,974 INFO L130 PetriNetUnfolder]: 263/738 cut-off events. [2022-11-20 11:23:30,974 INFO L131 PetriNetUnfolder]: For 4417/4417 co-relation queries the response was YES. [2022-11-20 11:23:30,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4096 conditions, 738 events. 263/738 cut-off events. For 4417/4417 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3598 event pairs, 18 based on Foata normal form. 1/736 useless extension candidates. Maximal degree in co-relation 3998. Up to 465 conditions per place. [2022-11-20 11:23:30,983 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 143 selfloop transitions, 99 changer transitions 18/299 dead transitions. [2022-11-20 11:23:30,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 299 transitions, 3142 flow [2022-11-20 11:23:30,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:23:30,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:23:30,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1603 transitions. [2022-11-20 11:23:30,986 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5684397163120567 [2022-11-20 11:23:30,986 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1603 transitions. [2022-11-20 11:23:30,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1603 transitions. [2022-11-20 11:23:30,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:23:30,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1603 transitions. [2022-11-20 11:23:30,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.43333333333333) internal successors, (1603), 30 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:30,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:30,992 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:30,992 INFO L175 Difference]: Start difference. First operand has 331 places, 257 transitions, 2275 flow. Second operand 30 states and 1603 transitions. [2022-11-20 11:23:30,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 299 transitions, 3142 flow [2022-11-20 11:23:31,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 299 transitions, 2849 flow, removed 37 selfloop flow, removed 37 redundant places. [2022-11-20 11:23:31,051 INFO L231 Difference]: Finished difference. Result has 302 places, 259 transitions, 2286 flow [2022-11-20 11:23:31,051 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2016, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2286, PETRI_PLACES=302, PETRI_TRANSITIONS=259} [2022-11-20 11:23:31,052 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 214 predicate places. [2022-11-20 11:23:31,052 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 259 transitions, 2286 flow [2022-11-20 11:23:31,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:31,053 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:23:31,053 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:31,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-20 11:23:31,054 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:23:31,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:31,055 INFO L85 PathProgramCache]: Analyzing trace with hash -920258534, now seen corresponding path program 31 times [2022-11-20 11:23:31,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:31,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899239662] [2022-11-20 11:23:31,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:31,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:31,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:31,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:31,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899239662] [2022-11-20 11:23:31,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899239662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:31,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:31,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:23:31,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887224334] [2022-11-20 11:23:31,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:31,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:23:31,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:31,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:23:31,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:23:31,857 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:23:31,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 259 transitions, 2286 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:31,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:23:31,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:23:31,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:23:33,856 INFO L130 PetriNetUnfolder]: 262/725 cut-off events. [2022-11-20 11:23:33,856 INFO L131 PetriNetUnfolder]: For 4459/4459 co-relation queries the response was YES. [2022-11-20 11:23:33,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4034 conditions, 725 events. 262/725 cut-off events. For 4459/4459 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3496 event pairs, 18 based on Foata normal form. 1/723 useless extension candidates. Maximal degree in co-relation 3943. Up to 474 conditions per place. [2022-11-20 11:23:33,866 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 148 selfloop transitions, 89 changer transitions 21/297 dead transitions. [2022-11-20 11:23:33,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 297 transitions, 3113 flow [2022-11-20 11:23:33,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:23:33,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:23:33,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1698 transitions. [2022-11-20 11:23:33,870 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644946808510638 [2022-11-20 11:23:33,870 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1698 transitions. [2022-11-20 11:23:33,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1698 transitions. [2022-11-20 11:23:33,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:23:33,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1698 transitions. [2022-11-20 11:23:33,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.0625) internal successors, (1698), 32 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:33,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:33,879 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:33,879 INFO L175 Difference]: Start difference. First operand has 302 places, 259 transitions, 2286 flow. Second operand 32 states and 1698 transitions. [2022-11-20 11:23:33,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 297 transitions, 3113 flow [2022-11-20 11:23:33,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 297 transitions, 2896 flow, removed 30 selfloop flow, removed 28 redundant places. [2022-11-20 11:23:33,935 INFO L231 Difference]: Finished difference. Result has 307 places, 257 transitions, 2300 flow [2022-11-20 11:23:33,936 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2087, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2300, PETRI_PLACES=307, PETRI_TRANSITIONS=257} [2022-11-20 11:23:33,937 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 219 predicate places. [2022-11-20 11:23:33,937 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 257 transitions, 2300 flow [2022-11-20 11:23:33,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:33,937 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:23:33,938 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:33,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-20 11:23:33,938 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:23:33,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:33,939 INFO L85 PathProgramCache]: Analyzing trace with hash -394051736, now seen corresponding path program 32 times [2022-11-20 11:23:33,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:33,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731176410] [2022-11-20 11:23:33,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:33,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:34,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:34,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:34,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731176410] [2022-11-20 11:23:34,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731176410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:34,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:34,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:23:34,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620432519] [2022-11-20 11:23:34,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:34,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:23:34,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:34,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:23:34,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:23:34,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:23:34,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 257 transitions, 2300 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:34,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:23:34,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:23:34,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:23:36,613 INFO L130 PetriNetUnfolder]: 256/721 cut-off events. [2022-11-20 11:23:36,613 INFO L131 PetriNetUnfolder]: For 4586/4586 co-relation queries the response was YES. [2022-11-20 11:23:36,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4019 conditions, 721 events. 256/721 cut-off events. For 4586/4586 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3459 event pairs, 17 based on Foata normal form. 1/719 useless extension candidates. Maximal degree in co-relation 3929. Up to 456 conditions per place. [2022-11-20 11:23:36,620 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 143 selfloop transitions, 100 changer transitions 14/296 dead transitions. [2022-11-20 11:23:36,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 296 transitions, 3138 flow [2022-11-20 11:23:36,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:23:36,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:23:36,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1701 transitions. [2022-11-20 11:23:36,625 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5654920212765957 [2022-11-20 11:23:36,625 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1701 transitions. [2022-11-20 11:23:36,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1701 transitions. [2022-11-20 11:23:36,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:23:36,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1701 transitions. [2022-11-20 11:23:36,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.15625) internal successors, (1701), 32 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:36,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:36,632 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:36,632 INFO L175 Difference]: Start difference. First operand has 307 places, 257 transitions, 2300 flow. Second operand 32 states and 1701 transitions. [2022-11-20 11:23:36,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 296 transitions, 3138 flow [2022-11-20 11:23:36,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 296 transitions, 2882 flow, removed 40 selfloop flow, removed 30 redundant places. [2022-11-20 11:23:36,666 INFO L231 Difference]: Finished difference. Result has 307 places, 260 transitions, 2367 flow [2022-11-20 11:23:36,667 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2078, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2367, PETRI_PLACES=307, PETRI_TRANSITIONS=260} [2022-11-20 11:23:36,668 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 219 predicate places. [2022-11-20 11:23:36,668 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 260 transitions, 2367 flow [2022-11-20 11:23:36,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:36,669 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:23:36,669 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:36,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-20 11:23:36,669 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:23:36,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:36,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1670592494, now seen corresponding path program 33 times [2022-11-20 11:23:36,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:36,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272457638] [2022-11-20 11:23:36,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:36,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:37,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:37,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:37,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272457638] [2022-11-20 11:23:37,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272457638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:37,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:37,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:23:37,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078457999] [2022-11-20 11:23:37,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:37,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:23:37,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:37,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:23:37,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:23:37,511 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:23:37,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 260 transitions, 2367 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:37,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:23:37,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:23:37,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:23:39,447 INFO L130 PetriNetUnfolder]: 255/716 cut-off events. [2022-11-20 11:23:39,447 INFO L131 PetriNetUnfolder]: For 4077/4077 co-relation queries the response was YES. [2022-11-20 11:23:39,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3978 conditions, 716 events. 255/716 cut-off events. For 4077/4077 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3440 event pairs, 19 based on Foata normal form. 1/713 useless extension candidates. Maximal degree in co-relation 3888. Up to 449 conditions per place. [2022-11-20 11:23:39,457 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 139 selfloop transitions, 92 changer transitions 25/295 dead transitions. [2022-11-20 11:23:39,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 295 transitions, 3134 flow [2022-11-20 11:23:39,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 11:23:39,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 11:23:39,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1749 transitions. [2022-11-20 11:23:39,461 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2022-11-20 11:23:39,461 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1749 transitions. [2022-11-20 11:23:39,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1749 transitions. [2022-11-20 11:23:39,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:23:39,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1749 transitions. [2022-11-20 11:23:39,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.0) internal successors, (1749), 33 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:39,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:39,470 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:39,470 INFO L175 Difference]: Start difference. First operand has 307 places, 260 transitions, 2367 flow. Second operand 33 states and 1749 transitions. [2022-11-20 11:23:39,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 295 transitions, 3134 flow [2022-11-20 11:23:39,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 295 transitions, 2900 flow, removed 32 selfloop flow, removed 27 redundant places. [2022-11-20 11:23:39,524 INFO L231 Difference]: Finished difference. Result has 315 places, 249 transitions, 2284 flow [2022-11-20 11:23:39,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2148, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2284, PETRI_PLACES=315, PETRI_TRANSITIONS=249} [2022-11-20 11:23:39,525 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 227 predicate places. [2022-11-20 11:23:39,525 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 249 transitions, 2284 flow [2022-11-20 11:23:39,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:39,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:23:39,526 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:39,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-20 11:23:39,526 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:23:39,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:39,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1177861492, now seen corresponding path program 34 times [2022-11-20 11:23:39,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:39,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229567362] [2022-11-20 11:23:39,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:39,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:40,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:40,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:40,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229567362] [2022-11-20 11:23:40,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229567362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:40,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:40,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:23:40,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127951436] [2022-11-20 11:23:40,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:40,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:23:40,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:40,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:23:40,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:23:40,363 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:23:40,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 249 transitions, 2284 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:40,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:23:40,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:23:40,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:23:42,253 INFO L130 PetriNetUnfolder]: 250/699 cut-off events. [2022-11-20 11:23:42,253 INFO L131 PetriNetUnfolder]: For 4452/4452 co-relation queries the response was YES. [2022-11-20 11:23:42,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3991 conditions, 699 events. 250/699 cut-off events. For 4452/4452 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3317 event pairs, 17 based on Foata normal form. 1/697 useless extension candidates. Maximal degree in co-relation 3897. Up to 468 conditions per place. [2022-11-20 11:23:42,262 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 147 selfloop transitions, 83 changer transitions 16/285 dead transitions. [2022-11-20 11:23:42,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 285 transitions, 3064 flow [2022-11-20 11:23:42,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:23:42,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:23:42,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1792 transitions. [2022-11-20 11:23:42,265 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5607008760951189 [2022-11-20 11:23:42,265 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1792 transitions. [2022-11-20 11:23:42,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1792 transitions. [2022-11-20 11:23:42,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:23:42,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1792 transitions. [2022-11-20 11:23:42,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.705882352941174) internal successors, (1792), 34 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:42,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:42,270 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:42,270 INFO L175 Difference]: Start difference. First operand has 315 places, 249 transitions, 2284 flow. Second operand 34 states and 1792 transitions. [2022-11-20 11:23:42,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 285 transitions, 3064 flow [2022-11-20 11:23:42,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 285 transitions, 2770 flow, removed 32 selfloop flow, removed 37 redundant places. [2022-11-20 11:23:42,308 INFO L231 Difference]: Finished difference. Result has 307 places, 251 transitions, 2245 flow [2022-11-20 11:23:42,308 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2025, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2245, PETRI_PLACES=307, PETRI_TRANSITIONS=251} [2022-11-20 11:23:42,309 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 219 predicate places. [2022-11-20 11:23:42,309 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 251 transitions, 2245 flow [2022-11-20 11:23:42,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:42,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:23:42,309 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:42,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-20 11:23:42,310 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:23:42,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:42,310 INFO L85 PathProgramCache]: Analyzing trace with hash 103252404, now seen corresponding path program 35 times [2022-11-20 11:23:42,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:42,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986654790] [2022-11-20 11:23:42,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:42,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:43,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:43,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:43,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986654790] [2022-11-20 11:23:43,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986654790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:43,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:43,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:23:43,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418131788] [2022-11-20 11:23:43,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:43,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:23:43,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:43,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:23:43,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:23:43,075 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:23:43,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 251 transitions, 2245 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:43,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:23:43,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:23:43,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:23:44,800 INFO L130 PetriNetUnfolder]: 245/684 cut-off events. [2022-11-20 11:23:44,800 INFO L131 PetriNetUnfolder]: For 4086/4086 co-relation queries the response was YES. [2022-11-20 11:23:44,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3855 conditions, 684 events. 245/684 cut-off events. For 4086/4086 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3222 event pairs, 19 based on Foata normal form. 1/681 useless extension candidates. Maximal degree in co-relation 3763. Up to 464 conditions per place. [2022-11-20 11:23:44,808 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 146 selfloop transitions, 70 changer transitions 21/276 dead transitions. [2022-11-20 11:23:44,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 276 transitions, 2864 flow [2022-11-20 11:23:44,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:23:44,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 11:23:44,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1636 transitions. [2022-11-20 11:23:44,811 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5614275909402883 [2022-11-20 11:23:44,811 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1636 transitions. [2022-11-20 11:23:44,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1636 transitions. [2022-11-20 11:23:44,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:23:44,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1636 transitions. [2022-11-20 11:23:44,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.774193548387096) internal successors, (1636), 31 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:44,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:44,819 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:44,820 INFO L175 Difference]: Start difference. First operand has 307 places, 251 transitions, 2245 flow. Second operand 31 states and 1636 transitions. [2022-11-20 11:23:44,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 276 transitions, 2864 flow [2022-11-20 11:23:44,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 276 transitions, 2669 flow, removed 30 selfloop flow, removed 28 redundant places. [2022-11-20 11:23:44,852 INFO L231 Difference]: Finished difference. Result has 307 places, 238 transitions, 2077 flow [2022-11-20 11:23:44,852 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2077, PETRI_PLACES=307, PETRI_TRANSITIONS=238} [2022-11-20 11:23:44,853 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 219 predicate places. [2022-11-20 11:23:44,853 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 238 transitions, 2077 flow [2022-11-20 11:23:44,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:44,853 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:23:44,853 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:44,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-20 11:23:44,854 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:23:44,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:44,854 INFO L85 PathProgramCache]: Analyzing trace with hash -710610230, now seen corresponding path program 36 times [2022-11-20 11:23:44,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:44,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742585789] [2022-11-20 11:23:44,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:44,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:45,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:45,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:45,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742585789] [2022-11-20 11:23:45,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742585789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:45,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:45,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:23:45,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431012148] [2022-11-20 11:23:45,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:45,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:23:45,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:45,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:23:45,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:23:45,599 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:23:45,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 238 transitions, 2077 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:45,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:23:45,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:23:45,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:23:47,336 INFO L130 PetriNetUnfolder]: 241/670 cut-off events. [2022-11-20 11:23:47,337 INFO L131 PetriNetUnfolder]: For 3996/3996 co-relation queries the response was YES. [2022-11-20 11:23:47,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3764 conditions, 670 events. 241/670 cut-off events. For 3996/3996 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3119 event pairs, 18 based on Foata normal form. 1/668 useless extension candidates. Maximal degree in co-relation 3671. Up to 438 conditions per place. [2022-11-20 11:23:47,377 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 128 selfloop transitions, 79 changer transitions 22/268 dead transitions. [2022-11-20 11:23:47,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 268 transitions, 2710 flow [2022-11-20 11:23:47,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:23:47,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:23:47,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1593 transitions. [2022-11-20 11:23:47,380 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5648936170212766 [2022-11-20 11:23:47,380 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1593 transitions. [2022-11-20 11:23:47,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1593 transitions. [2022-11-20 11:23:47,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:23:47,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1593 transitions. [2022-11-20 11:23:47,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.1) internal successors, (1593), 30 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:47,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:47,387 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:47,388 INFO L175 Difference]: Start difference. First operand has 307 places, 238 transitions, 2077 flow. Second operand 30 states and 1593 transitions. [2022-11-20 11:23:47,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 268 transitions, 2710 flow [2022-11-20 11:23:47,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 268 transitions, 2435 flow, removed 21 selfloop flow, removed 36 redundant places. [2022-11-20 11:23:47,424 INFO L231 Difference]: Finished difference. Result has 285 places, 228 transitions, 1909 flow [2022-11-20 11:23:47,425 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1808, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1909, PETRI_PLACES=285, PETRI_TRANSITIONS=228} [2022-11-20 11:23:47,426 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 197 predicate places. [2022-11-20 11:23:47,426 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 228 transitions, 1909 flow [2022-11-20 11:23:47,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:47,426 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:23:47,427 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:47,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-20 11:23:47,427 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:23:47,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:47,428 INFO L85 PathProgramCache]: Analyzing trace with hash -921725570, now seen corresponding path program 37 times [2022-11-20 11:23:47,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:47,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882326458] [2022-11-20 11:23:47,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:47,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:48,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:48,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:48,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882326458] [2022-11-20 11:23:48,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882326458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:48,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:48,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:23:48,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409092089] [2022-11-20 11:23:48,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:48,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:23:48,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:48,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:23:48,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:23:48,200 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:23:48,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 228 transitions, 1909 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:48,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:23:48,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:23:48,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:23:50,012 INFO L130 PetriNetUnfolder]: 234/643 cut-off events. [2022-11-20 11:23:50,012 INFO L131 PetriNetUnfolder]: For 3490/3490 co-relation queries the response was YES. [2022-11-20 11:23:50,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3525 conditions, 643 events. 234/643 cut-off events. For 3490/3490 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2926 event pairs, 15 based on Foata normal form. 1/641 useless extension candidates. Maximal degree in co-relation 3442. Up to 434 conditions per place. [2022-11-20 11:23:50,023 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 125 selfloop transitions, 69 changer transitions 22/255 dead transitions. [2022-11-20 11:23:50,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 255 transitions, 2486 flow [2022-11-20 11:23:50,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:23:50,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:23:50,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1586 transitions. [2022-11-20 11:23:50,027 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5624113475177305 [2022-11-20 11:23:50,027 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1586 transitions. [2022-11-20 11:23:50,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1586 transitions. [2022-11-20 11:23:50,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:23:50,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1586 transitions. [2022-11-20 11:23:50,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.86666666666667) internal successors, (1586), 30 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:50,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:50,034 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:50,035 INFO L175 Difference]: Start difference. First operand has 285 places, 228 transitions, 1909 flow. Second operand 30 states and 1586 transitions. [2022-11-20 11:23:50,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 255 transitions, 2486 flow [2022-11-20 11:23:50,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 255 transitions, 2231 flow, removed 12 selfloop flow, removed 34 redundant places. [2022-11-20 11:23:50,072 INFO L231 Difference]: Finished difference. Result has 273 places, 218 transitions, 1739 flow [2022-11-20 11:23:50,072 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1739, PETRI_PLACES=273, PETRI_TRANSITIONS=218} [2022-11-20 11:23:50,073 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 185 predicate places. [2022-11-20 11:23:50,073 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 218 transitions, 1739 flow [2022-11-20 11:23:50,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:50,073 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:23:50,074 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:50,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-20 11:23:50,074 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:23:50,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:50,075 INFO L85 PathProgramCache]: Analyzing trace with hash 199721444, now seen corresponding path program 38 times [2022-11-20 11:23:50,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:50,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962543473] [2022-11-20 11:23:50,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:50,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:50,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:50,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962543473] [2022-11-20 11:23:50,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962543473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:50,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:50,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:23:50,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332907522] [2022-11-20 11:23:50,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:50,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:23:50,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:50,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:23:50,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:23:50,897 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:23:50,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 218 transitions, 1739 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:50,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:23:50,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:23:50,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:23:52,839 INFO L130 PetriNetUnfolder]: 230/626 cut-off events. [2022-11-20 11:23:52,840 INFO L131 PetriNetUnfolder]: For 3083/3083 co-relation queries the response was YES. [2022-11-20 11:23:52,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3331 conditions, 626 events. 230/626 cut-off events. For 3083/3083 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2802 event pairs, 15 based on Foata normal form. 1/624 useless extension candidates. Maximal degree in co-relation 3253. Up to 426 conditions per place. [2022-11-20 11:23:52,851 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 118 selfloop transitions, 72 changer transitions 15/244 dead transitions. [2022-11-20 11:23:52,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 244 transitions, 2311 flow [2022-11-20 11:23:52,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:23:52,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:23:52,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1682 transitions. [2022-11-20 11:23:52,855 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5591755319148937 [2022-11-20 11:23:52,855 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1682 transitions. [2022-11-20 11:23:52,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1682 transitions. [2022-11-20 11:23:52,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:23:52,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1682 transitions. [2022-11-20 11:23:52,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.5625) internal successors, (1682), 32 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:52,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:52,863 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:52,863 INFO L175 Difference]: Start difference. First operand has 273 places, 218 transitions, 1739 flow. Second operand 32 states and 1682 transitions. [2022-11-20 11:23:52,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 244 transitions, 2311 flow [2022-11-20 11:23:52,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 244 transitions, 2076 flow, removed 15 selfloop flow, removed 33 redundant places. [2022-11-20 11:23:52,886 INFO L231 Difference]: Finished difference. Result has 261 places, 213 transitions, 1649 flow [2022-11-20 11:23:52,886 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1649, PETRI_PLACES=261, PETRI_TRANSITIONS=213} [2022-11-20 11:23:52,887 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 173 predicate places. [2022-11-20 11:23:52,887 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 213 transitions, 1649 flow [2022-11-20 11:23:52,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:52,888 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:23:52,888 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:52,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-20 11:23:52,888 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:23:52,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:52,889 INFO L85 PathProgramCache]: Analyzing trace with hash -358046080, now seen corresponding path program 39 times [2022-11-20 11:23:52,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:52,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551730758] [2022-11-20 11:23:52,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:52,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:53,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:53,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:53,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551730758] [2022-11-20 11:23:53,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551730758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:53,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:53,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:23:53,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347954051] [2022-11-20 11:23:53,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:53,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:23:53,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:53,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:23:53,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:23:53,719 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:23:53,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 213 transitions, 1649 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:53,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:23:53,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:23:53,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:23:55,426 INFO L130 PetriNetUnfolder]: 226/611 cut-off events. [2022-11-20 11:23:55,426 INFO L131 PetriNetUnfolder]: For 2965/2965 co-relation queries the response was YES. [2022-11-20 11:23:55,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3208 conditions, 611 events. 226/611 cut-off events. For 2965/2965 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2722 event pairs, 18 based on Foata normal form. 1/610 useless extension candidates. Maximal degree in co-relation 3133. Up to 424 conditions per place. [2022-11-20 11:23:55,437 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 112 selfloop transitions, 55 changer transitions 31/237 dead transitions. [2022-11-20 11:23:55,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 237 transitions, 2158 flow [2022-11-20 11:23:55,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:23:55,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:23:55,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1577 transitions. [2022-11-20 11:23:55,441 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5592198581560284 [2022-11-20 11:23:55,441 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1577 transitions. [2022-11-20 11:23:55,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1577 transitions. [2022-11-20 11:23:55,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:23:55,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1577 transitions. [2022-11-20 11:23:55,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.56666666666667) internal successors, (1577), 30 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:55,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:55,446 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:55,447 INFO L175 Difference]: Start difference. First operand has 261 places, 213 transitions, 1649 flow. Second operand 30 states and 1577 transitions. [2022-11-20 11:23:55,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 237 transitions, 2158 flow [2022-11-20 11:23:55,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 237 transitions, 1957 flow, removed 10 selfloop flow, removed 31 redundant places. [2022-11-20 11:23:55,481 INFO L231 Difference]: Finished difference. Result has 255 places, 196 transitions, 1474 flow [2022-11-20 11:23:55,482 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1474, PETRI_PLACES=255, PETRI_TRANSITIONS=196} [2022-11-20 11:23:55,482 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 167 predicate places. [2022-11-20 11:23:55,482 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 196 transitions, 1474 flow [2022-11-20 11:23:55,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:55,483 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:23:55,483 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:55,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-20 11:23:55,484 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:23:55,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:55,484 INFO L85 PathProgramCache]: Analyzing trace with hash 2011754598, now seen corresponding path program 40 times [2022-11-20 11:23:55,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:55,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868452834] [2022-11-20 11:23:55,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:55,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:56,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:56,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:56,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868452834] [2022-11-20 11:23:56,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868452834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:56,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:56,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:23:56,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982080444] [2022-11-20 11:23:56,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:56,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:23:56,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:56,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:23:56,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:23:56,293 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:23:56,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 196 transitions, 1474 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:56,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:23:56,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:23:56,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:23:58,501 INFO L130 PetriNetUnfolder]: 260/728 cut-off events. [2022-11-20 11:23:58,501 INFO L131 PetriNetUnfolder]: For 3522/3522 co-relation queries the response was YES. [2022-11-20 11:23:58,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3673 conditions, 728 events. 260/728 cut-off events. For 3522/3522 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3596 event pairs, 53 based on Foata normal form. 1/727 useless extension candidates. Maximal degree in co-relation 3600. Up to 435 conditions per place. [2022-11-20 11:23:58,509 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 115 selfloop transitions, 81 changer transitions 45/280 dead transitions. [2022-11-20 11:23:58,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 280 transitions, 2767 flow [2022-11-20 11:23:58,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:23:58,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:23:58,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1965 transitions. [2022-11-20 11:23:58,517 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5649798734905118 [2022-11-20 11:23:58,517 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1965 transitions. [2022-11-20 11:23:58,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1965 transitions. [2022-11-20 11:23:58,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:23:58,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1965 transitions. [2022-11-20 11:23:58,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 53.108108108108105) internal successors, (1965), 37 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:58,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:58,526 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:58,526 INFO L175 Difference]: Start difference. First operand has 255 places, 196 transitions, 1474 flow. Second operand 37 states and 1965 transitions. [2022-11-20 11:23:58,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 280 transitions, 2767 flow [2022-11-20 11:23:58,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 280 transitions, 2503 flow, removed 25 selfloop flow, removed 28 redundant places. [2022-11-20 11:23:58,573 INFO L231 Difference]: Finished difference. Result has 257 places, 221 transitions, 1845 flow [2022-11-20 11:23:58,574 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1845, PETRI_PLACES=257, PETRI_TRANSITIONS=221} [2022-11-20 11:23:58,574 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 169 predicate places. [2022-11-20 11:23:58,574 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 221 transitions, 1845 flow [2022-11-20 11:23:58,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:58,575 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:23:58,575 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:58,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-20 11:23:58,576 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:23:58,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:58,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1432156986, now seen corresponding path program 41 times [2022-11-20 11:23:58,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:23:58,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731210481] [2022-11-20 11:23:58,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:58,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:23:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:23:59,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:23:59,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731210481] [2022-11-20 11:23:59,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731210481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:59,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:59,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:23:59,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115478343] [2022-11-20 11:23:59,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:59,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:23:59,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:23:59,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:23:59,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:23:59,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:23:59,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 221 transitions, 1845 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:23:59,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:23:59,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:23:59,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:01,351 INFO L130 PetriNetUnfolder]: 280/764 cut-off events. [2022-11-20 11:24:01,351 INFO L131 PetriNetUnfolder]: For 5492/5492 co-relation queries the response was YES. [2022-11-20 11:24:01,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4223 conditions, 764 events. 280/764 cut-off events. For 5492/5492 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3686 event pairs, 39 based on Foata normal form. 1/763 useless extension candidates. Maximal degree in co-relation 4140. Up to 482 conditions per place. [2022-11-20 11:24:01,359 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 146 selfloop transitions, 97 changer transitions 22/304 dead transitions. [2022-11-20 11:24:01,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 304 transitions, 3346 flow [2022-11-20 11:24:01,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 11:24:01,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-20 11:24:01,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2071 transitions. [2022-11-20 11:24:01,363 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5649208947081288 [2022-11-20 11:24:01,363 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2071 transitions. [2022-11-20 11:24:01,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2071 transitions. [2022-11-20 11:24:01,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:01,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2071 transitions. [2022-11-20 11:24:01,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 53.1025641025641) internal successors, (2071), 39 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:01,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:01,368 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:01,368 INFO L175 Difference]: Start difference. First operand has 257 places, 221 transitions, 1845 flow. Second operand 39 states and 2071 transitions. [2022-11-20 11:24:01,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 304 transitions, 3346 flow [2022-11-20 11:24:01,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 304 transitions, 2978 flow, removed 148 selfloop flow, removed 21 redundant places. [2022-11-20 11:24:01,400 INFO L231 Difference]: Finished difference. Result has 277 places, 258 transitions, 2347 flow [2022-11-20 11:24:01,401 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=2347, PETRI_PLACES=277, PETRI_TRANSITIONS=258} [2022-11-20 11:24:01,402 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 189 predicate places. [2022-11-20 11:24:01,402 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 258 transitions, 2347 flow [2022-11-20 11:24:01,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:01,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:01,403 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:01,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-20 11:24:01,403 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:24:01,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:01,404 INFO L85 PathProgramCache]: Analyzing trace with hash -170058180, now seen corresponding path program 42 times [2022-11-20 11:24:01,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:01,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504756650] [2022-11-20 11:24:01,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:01,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:02,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:02,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:02,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504756650] [2022-11-20 11:24:02,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504756650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:02,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:02,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:24:02,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777459521] [2022-11-20 11:24:02,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:02,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:24:02,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:02,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:24:02,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:24:02,123 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:24:02,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 258 transitions, 2347 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:02,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:02,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:24:02,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:04,062 INFO L130 PetriNetUnfolder]: 296/817 cut-off events. [2022-11-20 11:24:04,062 INFO L131 PetriNetUnfolder]: For 7313/7313 co-relation queries the response was YES. [2022-11-20 11:24:04,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4772 conditions, 817 events. 296/817 cut-off events. For 7313/7313 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4149 event pairs, 56 based on Foata normal form. 1/816 useless extension candidates. Maximal degree in co-relation 4687. Up to 527 conditions per place. [2022-11-20 11:24:04,071 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 166 selfloop transitions, 79 changer transitions 36/320 dead transitions. [2022-11-20 11:24:04,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 320 transitions, 3625 flow [2022-11-20 11:24:04,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:24:04,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:24:04,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1813 transitions. [2022-11-20 11:24:04,075 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5672715894868585 [2022-11-20 11:24:04,075 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1813 transitions. [2022-11-20 11:24:04,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1813 transitions. [2022-11-20 11:24:04,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:04,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1813 transitions. [2022-11-20 11:24:04,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.3235294117647) internal successors, (1813), 34 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:04,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:04,082 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:04,083 INFO L175 Difference]: Start difference. First operand has 277 places, 258 transitions, 2347 flow. Second operand 34 states and 1813 transitions. [2022-11-20 11:24:04,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 320 transitions, 3625 flow [2022-11-20 11:24:04,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 320 transitions, 3143 flow, removed 204 selfloop flow, removed 17 redundant places. [2022-11-20 11:24:04,128 INFO L231 Difference]: Finished difference. Result has 301 places, 268 transitions, 2299 flow [2022-11-20 11:24:04,128 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1901, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2299, PETRI_PLACES=301, PETRI_TRANSITIONS=268} [2022-11-20 11:24:04,128 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 213 predicate places. [2022-11-20 11:24:04,129 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 268 transitions, 2299 flow [2022-11-20 11:24:04,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:04,129 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:04,129 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:04,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-20 11:24:04,130 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:24:04,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:04,130 INFO L85 PathProgramCache]: Analyzing trace with hash -273998376, now seen corresponding path program 43 times [2022-11-20 11:24:04,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:04,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988994202] [2022-11-20 11:24:04,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:04,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:04,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:04,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:04,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988994202] [2022-11-20 11:24:04,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988994202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:04,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:04,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:24:04,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558596151] [2022-11-20 11:24:04,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:04,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:24:04,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:04,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:24:04,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:24:04,915 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:24:04,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 268 transitions, 2299 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:04,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:04,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:24:04,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:06,893 INFO L130 PetriNetUnfolder]: 300/837 cut-off events. [2022-11-20 11:24:06,893 INFO L131 PetriNetUnfolder]: For 8423/8423 co-relation queries the response was YES. [2022-11-20 11:24:06,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4992 conditions, 837 events. 300/837 cut-off events. For 8423/8423 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4292 event pairs, 53 based on Foata normal form. 1/836 useless extension candidates. Maximal degree in co-relation 4895. Up to 536 conditions per place. [2022-11-20 11:24:06,905 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 161 selfloop transitions, 87 changer transitions 37/324 dead transitions. [2022-11-20 11:24:06,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 324 transitions, 3502 flow [2022-11-20 11:24:06,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:24:06,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:24:06,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1811 transitions. [2022-11-20 11:24:06,908 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5666458072590739 [2022-11-20 11:24:06,908 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1811 transitions. [2022-11-20 11:24:06,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1811 transitions. [2022-11-20 11:24:06,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:06,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1811 transitions. [2022-11-20 11:24:06,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.26470588235294) internal successors, (1811), 34 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:06,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:06,914 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:06,914 INFO L175 Difference]: Start difference. First operand has 301 places, 268 transitions, 2299 flow. Second operand 34 states and 1811 transitions. [2022-11-20 11:24:06,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 324 transitions, 3502 flow [2022-11-20 11:24:06,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 324 transitions, 3163 flow, removed 117 selfloop flow, removed 27 redundant places. [2022-11-20 11:24:06,959 INFO L231 Difference]: Finished difference. Result has 310 places, 275 transitions, 2407 flow [2022-11-20 11:24:06,960 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2407, PETRI_PLACES=310, PETRI_TRANSITIONS=275} [2022-11-20 11:24:06,960 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 222 predicate places. [2022-11-20 11:24:06,960 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 275 transitions, 2407 flow [2022-11-20 11:24:06,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:06,961 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:06,961 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:06,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-20 11:24:06,961 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:24:06,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:06,962 INFO L85 PathProgramCache]: Analyzing trace with hash -327641696, now seen corresponding path program 44 times [2022-11-20 11:24:06,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:06,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265615369] [2022-11-20 11:24:06,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:06,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:07,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:07,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:07,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265615369] [2022-11-20 11:24:07,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265615369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:07,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:07,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:24:07,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238282479] [2022-11-20 11:24:07,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:07,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:24:07,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:07,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:24:07,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:24:07,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:24:07,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 275 transitions, 2407 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:07,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:07,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:24:07,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:09,537 INFO L130 PetriNetUnfolder]: 307/857 cut-off events. [2022-11-20 11:24:09,538 INFO L131 PetriNetUnfolder]: For 9064/9064 co-relation queries the response was YES. [2022-11-20 11:24:09,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5240 conditions, 857 events. 307/857 cut-off events. For 9064/9064 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4448 event pairs, 56 based on Foata normal form. 1/856 useless extension candidates. Maximal degree in co-relation 5139. Up to 536 conditions per place. [2022-11-20 11:24:09,557 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 170 selfloop transitions, 95 changer transitions 40/344 dead transitions. [2022-11-20 11:24:09,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 344 transitions, 3809 flow [2022-11-20 11:24:09,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:24:09,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 11:24:09,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1659 transitions. [2022-11-20 11:24:09,560 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5693205216197667 [2022-11-20 11:24:09,561 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1659 transitions. [2022-11-20 11:24:09,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1659 transitions. [2022-11-20 11:24:09,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:09,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1659 transitions. [2022-11-20 11:24:09,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.516129032258064) internal successors, (1659), 31 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:09,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:09,567 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:09,567 INFO L175 Difference]: Start difference. First operand has 310 places, 275 transitions, 2407 flow. Second operand 31 states and 1659 transitions. [2022-11-20 11:24:09,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 344 transitions, 3809 flow [2022-11-20 11:24:09,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 344 transitions, 3497 flow, removed 101 selfloop flow, removed 29 redundant places. [2022-11-20 11:24:09,661 INFO L231 Difference]: Finished difference. Result has 316 places, 287 transitions, 2695 flow [2022-11-20 11:24:09,661 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2219, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2695, PETRI_PLACES=316, PETRI_TRANSITIONS=287} [2022-11-20 11:24:09,661 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 228 predicate places. [2022-11-20 11:24:09,662 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 287 transitions, 2695 flow [2022-11-20 11:24:09,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:09,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:09,662 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:09,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-20 11:24:09,663 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:24:09,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:09,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1872896644, now seen corresponding path program 45 times [2022-11-20 11:24:09,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:09,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396969975] [2022-11-20 11:24:09,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:09,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:10,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:10,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:10,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396969975] [2022-11-20 11:24:10,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396969975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:10,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:10,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:24:10,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641695731] [2022-11-20 11:24:10,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:10,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:24:10,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:10,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:24:10,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:24:10,352 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:24:10,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 287 transitions, 2695 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:10,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:10,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:24:10,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:12,643 INFO L130 PetriNetUnfolder]: 305/862 cut-off events. [2022-11-20 11:24:12,643 INFO L131 PetriNetUnfolder]: For 9634/9634 co-relation queries the response was YES. [2022-11-20 11:24:12,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 862 events. 305/862 cut-off events. For 9634/9634 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4545 event pairs, 52 based on Foata normal form. 1/861 useless extension candidates. Maximal degree in co-relation 5294. Up to 544 conditions per place. [2022-11-20 11:24:12,662 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 162 selfloop transitions, 101 changer transitions 37/339 dead transitions. [2022-11-20 11:24:12,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 339 transitions, 3866 flow [2022-11-20 11:24:12,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:24:12,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 11:24:12,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1909 transitions. [2022-11-20 11:24:12,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5641252955082743 [2022-11-20 11:24:12,673 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1909 transitions. [2022-11-20 11:24:12,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1909 transitions. [2022-11-20 11:24:12,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:12,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1909 transitions. [2022-11-20 11:24:12,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.02777777777778) internal successors, (1909), 36 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:12,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:12,680 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:12,681 INFO L175 Difference]: Start difference. First operand has 316 places, 287 transitions, 2695 flow. Second operand 36 states and 1909 transitions. [2022-11-20 11:24:12,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 339 transitions, 3866 flow [2022-11-20 11:24:12,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 339 transitions, 3627 flow, removed 72 selfloop flow, removed 27 redundant places. [2022-11-20 11:24:12,756 INFO L231 Difference]: Finished difference. Result has 326 places, 290 transitions, 2850 flow [2022-11-20 11:24:12,757 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2512, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2850, PETRI_PLACES=326, PETRI_TRANSITIONS=290} [2022-11-20 11:24:12,757 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 238 predicate places. [2022-11-20 11:24:12,757 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 290 transitions, 2850 flow [2022-11-20 11:24:12,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:12,758 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:12,758 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:12,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-20 11:24:12,758 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:24:12,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:12,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1738087850, now seen corresponding path program 46 times [2022-11-20 11:24:12,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:12,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2493735] [2022-11-20 11:24:12,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:12,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:13,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:13,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:13,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2493735] [2022-11-20 11:24:13,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2493735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:13,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:13,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:24:13,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350798141] [2022-11-20 11:24:13,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:13,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:24:13,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:13,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:24:13,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:24:13,370 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:24:13,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 290 transitions, 2850 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:13,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:13,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:24:13,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:15,297 INFO L130 PetriNetUnfolder]: 305/861 cut-off events. [2022-11-20 11:24:15,298 INFO L131 PetriNetUnfolder]: For 9789/9789 co-relation queries the response was YES. [2022-11-20 11:24:15,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5512 conditions, 861 events. 305/861 cut-off events. For 9789/9789 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4518 event pairs, 57 based on Foata normal form. 1/860 useless extension candidates. Maximal degree in co-relation 5405. Up to 557 conditions per place. [2022-11-20 11:24:15,309 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 174 selfloop transitions, 89 changer transitions 38/340 dead transitions. [2022-11-20 11:24:15,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 340 transitions, 3979 flow [2022-11-20 11:24:15,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:24:15,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:24:15,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1858 transitions. [2022-11-20 11:24:15,313 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.564741641337386 [2022-11-20 11:24:15,313 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1858 transitions. [2022-11-20 11:24:15,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1858 transitions. [2022-11-20 11:24:15,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:15,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1858 transitions. [2022-11-20 11:24:15,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.08571428571429) internal successors, (1858), 35 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:15,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:15,317 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:15,317 INFO L175 Difference]: Start difference. First operand has 326 places, 290 transitions, 2850 flow. Second operand 35 states and 1858 transitions. [2022-11-20 11:24:15,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 340 transitions, 3979 flow [2022-11-20 11:24:15,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 340 transitions, 3730 flow, removed 53 selfloop flow, removed 33 redundant places. [2022-11-20 11:24:15,385 INFO L231 Difference]: Finished difference. Result has 331 places, 290 transitions, 2905 flow [2022-11-20 11:24:15,385 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2647, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2905, PETRI_PLACES=331, PETRI_TRANSITIONS=290} [2022-11-20 11:24:15,386 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 243 predicate places. [2022-11-20 11:24:15,386 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 290 transitions, 2905 flow [2022-11-20 11:24:15,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:15,387 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:15,387 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:15,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-20 11:24:15,388 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:24:15,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:15,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1371800656, now seen corresponding path program 47 times [2022-11-20 11:24:15,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:15,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238610542] [2022-11-20 11:24:15,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:15,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:16,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:16,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:16,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238610542] [2022-11-20 11:24:16,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238610542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:16,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:16,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:24:16,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003618720] [2022-11-20 11:24:16,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:16,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:24:16,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:16,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:24:16,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:24:16,151 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:24:16,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 290 transitions, 2905 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:16,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:16,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:24:16,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:18,473 INFO L130 PetriNetUnfolder]: 306/842 cut-off events. [2022-11-20 11:24:18,473 INFO L131 PetriNetUnfolder]: For 9877/9877 co-relation queries the response was YES. [2022-11-20 11:24:18,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5600 conditions, 842 events. 306/842 cut-off events. For 9877/9877 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4375 event pairs, 58 based on Foata normal form. 1/841 useless extension candidates. Maximal degree in co-relation 5491. Up to 555 conditions per place. [2022-11-20 11:24:18,484 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 170 selfloop transitions, 100 changer transitions 34/343 dead transitions. [2022-11-20 11:24:18,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 343 transitions, 4161 flow [2022-11-20 11:24:18,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 11:24:18,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 11:24:18,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2009 transitions. [2022-11-20 11:24:18,487 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5624300111982082 [2022-11-20 11:24:18,488 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2009 transitions. [2022-11-20 11:24:18,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2009 transitions. [2022-11-20 11:24:18,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:18,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2009 transitions. [2022-11-20 11:24:18,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.86842105263158) internal successors, (2009), 38 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:18,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:18,493 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:18,493 INFO L175 Difference]: Start difference. First operand has 331 places, 290 transitions, 2905 flow. Second operand 38 states and 2009 transitions. [2022-11-20 11:24:18,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 343 transitions, 4161 flow [2022-11-20 11:24:18,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 343 transitions, 3859 flow, removed 77 selfloop flow, removed 30 redundant places. [2022-11-20 11:24:18,557 INFO L231 Difference]: Finished difference. Result has 342 places, 296 transitions, 3111 flow [2022-11-20 11:24:18,557 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2675, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3111, PETRI_PLACES=342, PETRI_TRANSITIONS=296} [2022-11-20 11:24:18,557 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 254 predicate places. [2022-11-20 11:24:18,558 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 296 transitions, 3111 flow [2022-11-20 11:24:18,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:18,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:18,558 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:18,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-20 11:24:18,558 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:24:18,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:18,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1767480892, now seen corresponding path program 48 times [2022-11-20 11:24:18,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:18,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151281239] [2022-11-20 11:24:18,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:18,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:19,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:19,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151281239] [2022-11-20 11:24:19,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151281239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:19,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:19,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:24:19,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565149399] [2022-11-20 11:24:19,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:19,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:24:19,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:19,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:24:19,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:24:19,325 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:24:19,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 296 transitions, 3111 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:19,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:19,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:24:19,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:21,483 INFO L130 PetriNetUnfolder]: 298/851 cut-off events. [2022-11-20 11:24:21,484 INFO L131 PetriNetUnfolder]: For 9827/9827 co-relation queries the response was YES. [2022-11-20 11:24:21,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5600 conditions, 851 events. 298/851 cut-off events. For 9827/9827 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4464 event pairs, 59 based on Foata normal form. 1/850 useless extension candidates. Maximal degree in co-relation 5486. Up to 555 conditions per place. [2022-11-20 11:24:21,504 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 170 selfloop transitions, 90 changer transitions 36/335 dead transitions. [2022-11-20 11:24:21,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 335 transitions, 4067 flow [2022-11-20 11:24:21,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:24:21,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:24:21,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1855 transitions. [2022-11-20 11:24:21,508 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2022-11-20 11:24:21,508 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1855 transitions. [2022-11-20 11:24:21,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1855 transitions. [2022-11-20 11:24:21,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:21,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1855 transitions. [2022-11-20 11:24:21,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.0) internal successors, (1855), 35 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:21,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:21,517 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:21,517 INFO L175 Difference]: Start difference. First operand has 342 places, 296 transitions, 3111 flow. Second operand 35 states and 1855 transitions. [2022-11-20 11:24:21,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 335 transitions, 4067 flow [2022-11-20 11:24:21,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 335 transitions, 3702 flow, removed 101 selfloop flow, removed 31 redundant places. [2022-11-20 11:24:21,623 INFO L231 Difference]: Finished difference. Result has 345 places, 288 transitions, 2966 flow [2022-11-20 11:24:21,624 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2790, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2966, PETRI_PLACES=345, PETRI_TRANSITIONS=288} [2022-11-20 11:24:21,624 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 257 predicate places. [2022-11-20 11:24:21,624 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 288 transitions, 2966 flow [2022-11-20 11:24:21,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:21,625 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:21,625 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:21,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-20 11:24:21,626 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:24:21,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:21,626 INFO L85 PathProgramCache]: Analyzing trace with hash 960424702, now seen corresponding path program 49 times [2022-11-20 11:24:21,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:21,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232515682] [2022-11-20 11:24:21,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:21,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:22,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:22,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232515682] [2022-11-20 11:24:22,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232515682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:22,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:22,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:24:22,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377557272] [2022-11-20 11:24:22,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:22,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:24:22,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:22,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:24:22,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:24:22,298 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:24:22,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 288 transitions, 2966 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:22,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:22,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:24:22,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:24,234 INFO L130 PetriNetUnfolder]: 300/863 cut-off events. [2022-11-20 11:24:24,234 INFO L131 PetriNetUnfolder]: For 9796/9796 co-relation queries the response was YES. [2022-11-20 11:24:24,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5613 conditions, 863 events. 300/863 cut-off events. For 9796/9796 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4553 event pairs, 50 based on Foata normal form. 1/862 useless extension candidates. Maximal degree in co-relation 5498. Up to 560 conditions per place. [2022-11-20 11:24:24,246 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 187 selfloop transitions, 86 changer transitions 30/342 dead transitions. [2022-11-20 11:24:24,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 342 transitions, 4187 flow [2022-11-20 11:24:24,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:24:24,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:24:24,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1814 transitions. [2022-11-20 11:24:24,250 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.567584480600751 [2022-11-20 11:24:24,250 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1814 transitions. [2022-11-20 11:24:24,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1814 transitions. [2022-11-20 11:24:24,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:24,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1814 transitions. [2022-11-20 11:24:24,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.35294117647059) internal successors, (1814), 34 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:24,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:24,255 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:24,255 INFO L175 Difference]: Start difference. First operand has 345 places, 288 transitions, 2966 flow. Second operand 34 states and 1814 transitions. [2022-11-20 11:24:24,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 342 transitions, 4187 flow [2022-11-20 11:24:24,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 342 transitions, 3843 flow, removed 38 selfloop flow, removed 38 redundant places. [2022-11-20 11:24:24,323 INFO L231 Difference]: Finished difference. Result has 337 places, 296 transitions, 3029 flow [2022-11-20 11:24:24,324 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2670, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3029, PETRI_PLACES=337, PETRI_TRANSITIONS=296} [2022-11-20 11:24:24,324 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 249 predicate places. [2022-11-20 11:24:24,325 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 296 transitions, 3029 flow [2022-11-20 11:24:24,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:24,325 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:24,325 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:24,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-20 11:24:24,326 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:24:24,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:24,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1694596224, now seen corresponding path program 50 times [2022-11-20 11:24:24,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:24,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067112373] [2022-11-20 11:24:24,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:24,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:24,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:24,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067112373] [2022-11-20 11:24:24,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067112373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:24,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:24,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:24:24,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144227636] [2022-11-20 11:24:24,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:24,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:24:24,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:24,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:24:24,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:24:24,945 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:24:24,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 296 transitions, 3029 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:24,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:24,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:24:24,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:26,901 INFO L130 PetriNetUnfolder]: 306/885 cut-off events. [2022-11-20 11:24:26,901 INFO L131 PetriNetUnfolder]: For 9888/9888 co-relation queries the response was YES. [2022-11-20 11:24:26,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5651 conditions, 885 events. 306/885 cut-off events. For 9888/9888 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4760 event pairs, 62 based on Foata normal form. 1/884 useless extension candidates. Maximal degree in co-relation 5539. Up to 583 conditions per place. [2022-11-20 11:24:26,914 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 195 selfloop transitions, 85 changer transitions 34/353 dead transitions. [2022-11-20 11:24:26,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 353 transitions, 4236 flow [2022-11-20 11:24:26,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:24:26,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 11:24:26,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1910 transitions. [2022-11-20 11:24:26,917 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644208037825059 [2022-11-20 11:24:26,917 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1910 transitions. [2022-11-20 11:24:26,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1910 transitions. [2022-11-20 11:24:26,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:26,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1910 transitions. [2022-11-20 11:24:26,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.05555555555556) internal successors, (1910), 36 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:26,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:26,922 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:26,922 INFO L175 Difference]: Start difference. First operand has 337 places, 296 transitions, 3029 flow. Second operand 36 states and 1910 transitions. [2022-11-20 11:24:26,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 353 transitions, 4236 flow [2022-11-20 11:24:26,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 353 transitions, 3925 flow, removed 84 selfloop flow, removed 31 redundant places. [2022-11-20 11:24:26,996 INFO L231 Difference]: Finished difference. Result has 348 places, 306 transitions, 3145 flow [2022-11-20 11:24:26,996 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2786, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3145, PETRI_PLACES=348, PETRI_TRANSITIONS=306} [2022-11-20 11:24:26,997 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 260 predicate places. [2022-11-20 11:24:26,997 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 306 transitions, 3145 flow [2022-11-20 11:24:26,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:26,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:26,998 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:26,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-20 11:24:26,998 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:24:26,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:26,998 INFO L85 PathProgramCache]: Analyzing trace with hash -2087787960, now seen corresponding path program 51 times [2022-11-20 11:24:26,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:26,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327155984] [2022-11-20 11:24:26,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:26,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:27,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:27,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:27,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327155984] [2022-11-20 11:24:27,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327155984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:27,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:27,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:24:27,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782527428] [2022-11-20 11:24:27,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:27,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:24:27,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:27,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:24:27,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:24:27,842 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:24:27,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 306 transitions, 3145 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:27,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:27,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:24:27,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:30,758 INFO L130 PetriNetUnfolder]: 348/998 cut-off events. [2022-11-20 11:24:30,759 INFO L131 PetriNetUnfolder]: For 11542/11542 co-relation queries the response was YES. [2022-11-20 11:24:30,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6391 conditions, 998 events. 348/998 cut-off events. For 11542/11542 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5516 event pairs, 36 based on Foata normal form. 1/997 useless extension candidates. Maximal degree in co-relation 6275. Up to 612 conditions per place. [2022-11-20 11:24:30,782 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 216 selfloop transitions, 155 changer transitions 22/432 dead transitions. [2022-11-20 11:24:30,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 432 transitions, 5466 flow [2022-11-20 11:24:30,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-20 11:24:30,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-11-20 11:24:30,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 2728 transitions. [2022-11-20 11:24:30,831 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.55810147299509 [2022-11-20 11:24:30,831 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 2728 transitions. [2022-11-20 11:24:30,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 2728 transitions. [2022-11-20 11:24:30,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:30,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 2728 transitions. [2022-11-20 11:24:30,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 52.46153846153846) internal successors, (2728), 52 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:30,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 94.0) internal successors, (4982), 53 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:30,838 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 94.0) internal successors, (4982), 53 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:30,839 INFO L175 Difference]: Start difference. First operand has 348 places, 306 transitions, 3145 flow. Second operand 52 states and 2728 transitions. [2022-11-20 11:24:30,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 432 transitions, 5466 flow [2022-11-20 11:24:30,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 432 transitions, 5210 flow, removed 73 selfloop flow, removed 28 redundant places. [2022-11-20 11:24:30,922 INFO L231 Difference]: Finished difference. Result has 381 places, 389 transitions, 4519 flow [2022-11-20 11:24:30,923 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2970, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=4519, PETRI_PLACES=381, PETRI_TRANSITIONS=389} [2022-11-20 11:24:30,924 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 293 predicate places. [2022-11-20 11:24:30,924 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 389 transitions, 4519 flow [2022-11-20 11:24:30,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:30,925 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:30,925 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:30,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-20 11:24:30,925 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:24:30,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:30,926 INFO L85 PathProgramCache]: Analyzing trace with hash -478736964, now seen corresponding path program 52 times [2022-11-20 11:24:30,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:30,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400243891] [2022-11-20 11:24:30,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:30,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:31,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:31,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400243891] [2022-11-20 11:24:31,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400243891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:31,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:31,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:24:31,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836421677] [2022-11-20 11:24:31,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:31,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:24:31,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:31,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:24:31,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:24:31,529 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:24:31,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 389 transitions, 4519 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:31,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:31,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:24:31,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:33,779 INFO L130 PetriNetUnfolder]: 355/1033 cut-off events. [2022-11-20 11:24:33,779 INFO L131 PetriNetUnfolder]: For 13178/13178 co-relation queries the response was YES. [2022-11-20 11:24:33,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6995 conditions, 1033 events. 355/1033 cut-off events. For 13178/13178 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5925 event pairs, 49 based on Foata normal form. 1/1032 useless extension candidates. Maximal degree in co-relation 6869. Up to 673 conditions per place. [2022-11-20 11:24:33,795 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 265 selfloop transitions, 110 changer transitions 29/443 dead transitions. [2022-11-20 11:24:33,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 443 transitions, 5944 flow [2022-11-20 11:24:33,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 11:24:33,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-20 11:24:33,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2066 transitions. [2022-11-20 11:24:33,799 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.563557010365521 [2022-11-20 11:24:33,799 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2066 transitions. [2022-11-20 11:24:33,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2066 transitions. [2022-11-20 11:24:33,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:33,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2066 transitions. [2022-11-20 11:24:33,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.97435897435897) internal successors, (2066), 39 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:33,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:33,806 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:33,806 INFO L175 Difference]: Start difference. First operand has 381 places, 389 transitions, 4519 flow. Second operand 39 states and 2066 transitions. [2022-11-20 11:24:33,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 443 transitions, 5944 flow [2022-11-20 11:24:33,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 443 transitions, 5178 flow, removed 332 selfloop flow, removed 21 redundant places. [2022-11-20 11:24:33,935 INFO L231 Difference]: Finished difference. Result has 402 places, 398 transitions, 4195 flow [2022-11-20 11:24:33,935 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3777, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=4195, PETRI_PLACES=402, PETRI_TRANSITIONS=398} [2022-11-20 11:24:33,936 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 314 predicate places. [2022-11-20 11:24:33,936 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 398 transitions, 4195 flow [2022-11-20 11:24:33,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:33,936 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:33,936 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:33,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-20 11:24:33,937 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:24:33,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:33,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1724597186, now seen corresponding path program 53 times [2022-11-20 11:24:33,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:33,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408396876] [2022-11-20 11:24:33,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:33,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:34,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:34,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:34,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408396876] [2022-11-20 11:24:34,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408396876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:34,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:34,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:24:34,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259100002] [2022-11-20 11:24:34,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:34,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:24:34,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:34,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:24:34,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:24:34,587 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:24:34,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 398 transitions, 4195 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:34,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:34,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:24:34,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:37,280 INFO L130 PetriNetUnfolder]: 390/1139 cut-off events. [2022-11-20 11:24:37,281 INFO L131 PetriNetUnfolder]: For 15081/15081 co-relation queries the response was YES. [2022-11-20 11:24:37,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7552 conditions, 1139 events. 390/1139 cut-off events. For 15081/15081 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6729 event pairs, 43 based on Foata normal form. 1/1138 useless extension candidates. Maximal degree in co-relation 7420. Up to 658 conditions per place. [2022-11-20 11:24:37,299 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 236 selfloop transitions, 203 changer transitions 23/501 dead transitions. [2022-11-20 11:24:37,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 501 transitions, 6622 flow [2022-11-20 11:24:37,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-20 11:24:37,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-11-20 11:24:37,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2426 transitions. [2022-11-20 11:24:37,303 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.561054579093432 [2022-11-20 11:24:37,303 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 2426 transitions. [2022-11-20 11:24:37,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 2426 transitions. [2022-11-20 11:24:37,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:37,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 2426 transitions. [2022-11-20 11:24:37,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 52.73913043478261) internal successors, (2426), 46 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:37,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 94.0) internal successors, (4418), 47 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:37,314 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 94.0) internal successors, (4418), 47 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:37,314 INFO L175 Difference]: Start difference. First operand has 402 places, 398 transitions, 4195 flow. Second operand 46 states and 2426 transitions. [2022-11-20 11:24:37,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 501 transitions, 6622 flow [2022-11-20 11:24:37,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 501 transitions, 6257 flow, removed 113 selfloop flow, removed 34 redundant places. [2022-11-20 11:24:37,444 INFO L231 Difference]: Finished difference. Result has 419 places, 452 transitions, 5421 flow [2022-11-20 11:24:37,444 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3982, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=5421, PETRI_PLACES=419, PETRI_TRANSITIONS=452} [2022-11-20 11:24:37,444 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 331 predicate places. [2022-11-20 11:24:37,445 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 452 transitions, 5421 flow [2022-11-20 11:24:37,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:37,445 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:37,446 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:37,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-20 11:24:37,446 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:24:37,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:37,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1113514368, now seen corresponding path program 54 times [2022-11-20 11:24:37,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:37,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002595276] [2022-11-20 11:24:37,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:37,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:38,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:38,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:38,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002595276] [2022-11-20 11:24:38,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002595276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:38,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:38,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:24:38,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411186052] [2022-11-20 11:24:38,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:38,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:24:38,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:38,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:24:38,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:24:38,054 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:24:38,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 452 transitions, 5421 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:38,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:38,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:24:38,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:40,325 INFO L130 PetriNetUnfolder]: 395/1152 cut-off events. [2022-11-20 11:24:40,326 INFO L131 PetriNetUnfolder]: For 17145/17145 co-relation queries the response was YES. [2022-11-20 11:24:40,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8158 conditions, 1152 events. 395/1152 cut-off events. For 17145/17145 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6870 event pairs, 41 based on Foata normal form. 1/1151 useless extension candidates. Maximal degree in co-relation 8020. Up to 780 conditions per place. [2022-11-20 11:24:40,344 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 327 selfloop transitions, 98 changer transitions 36/500 dead transitions. [2022-11-20 11:24:40,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 500 transitions, 6884 flow [2022-11-20 11:24:40,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:24:40,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 11:24:40,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1912 transitions. [2022-11-20 11:24:40,348 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2022-11-20 11:24:40,348 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1912 transitions. [2022-11-20 11:24:40,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1912 transitions. [2022-11-20 11:24:40,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:40,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1912 transitions. [2022-11-20 11:24:40,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.111111111111114) internal successors, (1912), 36 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:40,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:40,352 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:40,352 INFO L175 Difference]: Start difference. First operand has 419 places, 452 transitions, 5421 flow. Second operand 36 states and 1912 transitions. [2022-11-20 11:24:40,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 500 transitions, 6884 flow [2022-11-20 11:24:40,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 500 transitions, 6349 flow, removed 202 selfloop flow, removed 28 redundant places. [2022-11-20 11:24:40,519 INFO L231 Difference]: Finished difference. Result has 434 places, 452 transitions, 5213 flow [2022-11-20 11:24:40,520 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4930, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5213, PETRI_PLACES=434, PETRI_TRANSITIONS=452} [2022-11-20 11:24:40,520 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 346 predicate places. [2022-11-20 11:24:40,520 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 452 transitions, 5213 flow [2022-11-20 11:24:40,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:40,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:40,521 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:40,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-20 11:24:40,521 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:24:40,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:40,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1232454236, now seen corresponding path program 55 times [2022-11-20 11:24:40,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:40,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102981788] [2022-11-20 11:24:40,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:40,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:41,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:41,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:41,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102981788] [2022-11-20 11:24:41,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102981788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:41,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:41,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:24:41,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802141152] [2022-11-20 11:24:41,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:41,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:24:41,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:41,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:24:41,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:24:41,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:24:41,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 452 transitions, 5213 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:41,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:41,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:24:41,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:43,562 INFO L130 PetriNetUnfolder]: 398/1162 cut-off events. [2022-11-20 11:24:43,563 INFO L131 PetriNetUnfolder]: For 16289/16289 co-relation queries the response was YES. [2022-11-20 11:24:43,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8113 conditions, 1162 events. 398/1162 cut-off events. For 16289/16289 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7031 event pairs, 39 based on Foata normal form. 1/1161 useless extension candidates. Maximal degree in co-relation 7966. Up to 751 conditions per place. [2022-11-20 11:24:43,582 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 303 selfloop transitions, 141 changer transitions 30/513 dead transitions. [2022-11-20 11:24:43,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 513 transitions, 7000 flow [2022-11-20 11:24:43,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 11:24:43,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-20 11:24:43,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2168 transitions. [2022-11-20 11:24:43,585 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5625324338349766 [2022-11-20 11:24:43,586 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2168 transitions. [2022-11-20 11:24:43,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2168 transitions. [2022-11-20 11:24:43,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:43,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2168 transitions. [2022-11-20 11:24:43,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.8780487804878) internal successors, (2168), 41 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:43,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:43,591 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:43,591 INFO L175 Difference]: Start difference. First operand has 434 places, 452 transitions, 5213 flow. Second operand 41 states and 2168 transitions. [2022-11-20 11:24:43,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 513 transitions, 7000 flow [2022-11-20 11:24:43,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 513 transitions, 6624 flow, removed 63 selfloop flow, removed 37 redundant places. [2022-11-20 11:24:43,753 INFO L231 Difference]: Finished difference. Result has 438 places, 465 transitions, 5536 flow [2022-11-20 11:24:43,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4899, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=5536, PETRI_PLACES=438, PETRI_TRANSITIONS=465} [2022-11-20 11:24:43,753 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 350 predicate places. [2022-11-20 11:24:43,753 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 465 transitions, 5536 flow [2022-11-20 11:24:43,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:43,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:43,754 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:43,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-20 11:24:43,754 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:24:43,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:43,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1955632098, now seen corresponding path program 56 times [2022-11-20 11:24:43,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:43,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656157935] [2022-11-20 11:24:43,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:43,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:44,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:44,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:44,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656157935] [2022-11-20 11:24:44,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656157935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:44,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:44,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:24:44,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475047793] [2022-11-20 11:24:44,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:44,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:24:44,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:44,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:24:44,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:24:44,556 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:24:44,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 465 transitions, 5536 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:44,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:44,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:24:44,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:47,217 INFO L130 PetriNetUnfolder]: 396/1162 cut-off events. [2022-11-20 11:24:47,217 INFO L131 PetriNetUnfolder]: For 15161/15161 co-relation queries the response was YES. [2022-11-20 11:24:47,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8061 conditions, 1162 events. 396/1162 cut-off events. For 15161/15161 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7060 event pairs, 46 based on Foata normal form. 1/1161 useless extension candidates. Maximal degree in co-relation 7918. Up to 756 conditions per place. [2022-11-20 11:24:47,237 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 308 selfloop transitions, 128 changer transitions 36/511 dead transitions. [2022-11-20 11:24:47,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 511 transitions, 7017 flow [2022-11-20 11:24:47,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-20 11:24:47,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-20 11:24:47,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2316 transitions. [2022-11-20 11:24:47,241 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5599613152804642 [2022-11-20 11:24:47,242 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2316 transitions. [2022-11-20 11:24:47,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2316 transitions. [2022-11-20 11:24:47,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:47,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2316 transitions. [2022-11-20 11:24:47,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 52.63636363636363) internal successors, (2316), 44 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:47,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:47,252 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:47,252 INFO L175 Difference]: Start difference. First operand has 438 places, 465 transitions, 5536 flow. Second operand 44 states and 2316 transitions. [2022-11-20 11:24:47,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 511 transitions, 7017 flow [2022-11-20 11:24:47,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 511 transitions, 6694 flow, removed 90 selfloop flow, removed 34 redundant places. [2022-11-20 11:24:47,588 INFO L231 Difference]: Finished difference. Result has 453 places, 464 transitions, 5620 flow [2022-11-20 11:24:47,589 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5263, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5620, PETRI_PLACES=453, PETRI_TRANSITIONS=464} [2022-11-20 11:24:47,589 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 365 predicate places. [2022-11-20 11:24:47,589 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 464 transitions, 5620 flow [2022-11-20 11:24:47,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:47,590 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:47,590 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:47,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-20 11:24:47,591 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:24:47,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:47,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1157197320, now seen corresponding path program 57 times [2022-11-20 11:24:47,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:47,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770828307] [2022-11-20 11:24:47,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:47,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:48,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:48,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770828307] [2022-11-20 11:24:48,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770828307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:48,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:48,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:24:48,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646384008] [2022-11-20 11:24:48,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:48,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:24:48,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:48,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:24:48,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:24:48,339 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:24:48,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 464 transitions, 5620 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:48,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:48,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:24:48,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:50,639 INFO L130 PetriNetUnfolder]: 392/1160 cut-off events. [2022-11-20 11:24:50,639 INFO L131 PetriNetUnfolder]: For 14657/14657 co-relation queries the response was YES. [2022-11-20 11:24:50,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8117 conditions, 1160 events. 392/1160 cut-off events. For 14657/14657 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7002 event pairs, 43 based on Foata normal form. 1/1159 useless extension candidates. Maximal degree in co-relation 7967. Up to 782 conditions per place. [2022-11-20 11:24:50,658 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 335 selfloop transitions, 108 changer transitions 27/509 dead transitions. [2022-11-20 11:24:50,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 509 transitions, 7124 flow [2022-11-20 11:24:50,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:24:50,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:24:50,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1859 transitions. [2022-11-20 11:24:50,662 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5650455927051672 [2022-11-20 11:24:50,662 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1859 transitions. [2022-11-20 11:24:50,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1859 transitions. [2022-11-20 11:24:50,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:50,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1859 transitions. [2022-11-20 11:24:50,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.114285714285714) internal successors, (1859), 35 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:50,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:50,667 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:50,667 INFO L175 Difference]: Start difference. First operand has 453 places, 464 transitions, 5620 flow. Second operand 35 states and 1859 transitions. [2022-11-20 11:24:50,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 509 transitions, 7124 flow [2022-11-20 11:24:50,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 509 transitions, 6731 flow, removed 46 selfloop flow, removed 41 redundant places. [2022-11-20 11:24:50,824 INFO L231 Difference]: Finished difference. Result has 445 places, 467 transitions, 5625 flow [2022-11-20 11:24:50,825 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5269, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5625, PETRI_PLACES=445, PETRI_TRANSITIONS=467} [2022-11-20 11:24:50,825 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 357 predicate places. [2022-11-20 11:24:50,825 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 467 transitions, 5625 flow [2022-11-20 11:24:50,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:50,825 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:50,826 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:50,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-20 11:24:50,826 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:24:50,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:50,826 INFO L85 PathProgramCache]: Analyzing trace with hash -519573206, now seen corresponding path program 58 times [2022-11-20 11:24:50,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:50,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919737529] [2022-11-20 11:24:50,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:50,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:51,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:51,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:51,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919737529] [2022-11-20 11:24:51,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919737529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:51,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:51,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:24:51,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995520627] [2022-11-20 11:24:51,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:51,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:24:51,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:51,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:24:51,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:24:51,438 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:24:51,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 467 transitions, 5625 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:51,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:51,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:24:51,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:53,631 INFO L130 PetriNetUnfolder]: 399/1173 cut-off events. [2022-11-20 11:24:53,632 INFO L131 PetriNetUnfolder]: For 15695/15695 co-relation queries the response was YES. [2022-11-20 11:24:53,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8261 conditions, 1173 events. 399/1173 cut-off events. For 15695/15695 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7095 event pairs, 54 based on Foata normal form. 1/1172 useless extension candidates. Maximal degree in co-relation 8112. Up to 784 conditions per place. [2022-11-20 11:24:53,652 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 349 selfloop transitions, 103 changer transitions 29/520 dead transitions. [2022-11-20 11:24:53,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 520 transitions, 7417 flow [2022-11-20 11:24:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:24:53,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:24:53,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1812 transitions. [2022-11-20 11:24:53,655 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5669586983729662 [2022-11-20 11:24:53,655 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1812 transitions. [2022-11-20 11:24:53,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1812 transitions. [2022-11-20 11:24:53,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:53,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1812 transitions. [2022-11-20 11:24:53,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.294117647058826) internal successors, (1812), 34 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:53,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:53,660 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:53,660 INFO L175 Difference]: Start difference. First operand has 445 places, 467 transitions, 5625 flow. Second operand 34 states and 1812 transitions. [2022-11-20 11:24:53,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 520 transitions, 7417 flow [2022-11-20 11:24:53,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 520 transitions, 7167 flow, removed 50 selfloop flow, removed 31 redundant places. [2022-11-20 11:24:53,838 INFO L231 Difference]: Finished difference. Result has 451 places, 478 transitions, 5939 flow [2022-11-20 11:24:53,839 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5411, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=5939, PETRI_PLACES=451, PETRI_TRANSITIONS=478} [2022-11-20 11:24:53,839 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 363 predicate places. [2022-11-20 11:24:53,839 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 478 transitions, 5939 flow [2022-11-20 11:24:53,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:53,840 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:53,840 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:53,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-20 11:24:53,841 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:24:53,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:53,841 INFO L85 PathProgramCache]: Analyzing trace with hash 32107294, now seen corresponding path program 59 times [2022-11-20 11:24:53,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:53,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261242128] [2022-11-20 11:24:53,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:53,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:54,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:54,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:54,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261242128] [2022-11-20 11:24:54,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261242128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:54,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:54,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:24:54,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610010392] [2022-11-20 11:24:54,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:54,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:24:54,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:54,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:24:54,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:24:54,630 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:24:54,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 478 transitions, 5939 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:54,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:54,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:24:54,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:57,205 INFO L130 PetriNetUnfolder]: 400/1173 cut-off events. [2022-11-20 11:24:57,205 INFO L131 PetriNetUnfolder]: For 17591/17591 co-relation queries the response was YES. [2022-11-20 11:24:57,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8497 conditions, 1173 events. 400/1173 cut-off events. For 17591/17591 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7102 event pairs, 41 based on Foata normal form. 1/1172 useless extension candidates. Maximal degree in co-relation 8345. Up to 760 conditions per place. [2022-11-20 11:24:57,226 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 308 selfloop transitions, 150 changer transitions 27/524 dead transitions. [2022-11-20 11:24:57,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 524 transitions, 7540 flow [2022-11-20 11:24:57,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-20 11:24:57,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-20 11:24:57,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2264 transitions. [2022-11-20 11:24:57,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5601187530925285 [2022-11-20 11:24:57,230 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2264 transitions. [2022-11-20 11:24:57,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2264 transitions. [2022-11-20 11:24:57,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:57,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2264 transitions. [2022-11-20 11:24:57,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 52.651162790697676) internal successors, (2264), 43 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:57,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:57,236 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:57,236 INFO L175 Difference]: Start difference. First operand has 451 places, 478 transitions, 5939 flow. Second operand 43 states and 2264 transitions. [2022-11-20 11:24:57,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 524 transitions, 7540 flow [2022-11-20 11:24:57,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 524 transitions, 7101 flow, removed 136 selfloop flow, removed 28 redundant places. [2022-11-20 11:24:57,415 INFO L231 Difference]: Finished difference. Result has 467 places, 481 transitions, 6029 flow [2022-11-20 11:24:57,416 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5562, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=6029, PETRI_PLACES=467, PETRI_TRANSITIONS=481} [2022-11-20 11:24:57,416 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 379 predicate places. [2022-11-20 11:24:57,416 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 481 transitions, 6029 flow [2022-11-20 11:24:57,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:57,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:57,417 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:57,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-20 11:24:57,417 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:24:57,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:57,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1948725806, now seen corresponding path program 60 times [2022-11-20 11:24:57,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:57,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618297382] [2022-11-20 11:24:57,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:57,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:58,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:58,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:58,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618297382] [2022-11-20 11:24:58,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618297382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:58,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:58,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:24:58,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062994243] [2022-11-20 11:24:58,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:58,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:24:58,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:58,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:24:58,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:24:58,005 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:24:58,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 481 transitions, 6029 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:58,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:58,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:24:58,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:00,085 INFO L130 PetriNetUnfolder]: 403/1183 cut-off events. [2022-11-20 11:25:00,085 INFO L131 PetriNetUnfolder]: For 17161/17161 co-relation queries the response was YES. [2022-11-20 11:25:00,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8608 conditions, 1183 events. 403/1183 cut-off events. For 17161/17161 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7199 event pairs, 49 based on Foata normal form. 1/1182 useless extension candidates. Maximal degree in co-relation 8454. Up to 807 conditions per place. [2022-11-20 11:25:00,106 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 358 selfloop transitions, 102 changer transitions 27/526 dead transitions. [2022-11-20 11:25:00,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 526 transitions, 7649 flow [2022-11-20 11:25:00,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:25:00,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:25:00,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1707 transitions. [2022-11-20 11:25:00,110 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5674867021276596 [2022-11-20 11:25:00,110 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1707 transitions. [2022-11-20 11:25:00,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1707 transitions. [2022-11-20 11:25:00,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:00,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1707 transitions. [2022-11-20 11:25:00,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.34375) internal successors, (1707), 32 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:00,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:00,118 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:00,118 INFO L175 Difference]: Start difference. First operand has 467 places, 481 transitions, 6029 flow. Second operand 32 states and 1707 transitions. [2022-11-20 11:25:00,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 526 transitions, 7649 flow [2022-11-20 11:25:00,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 526 transitions, 7323 flow, removed 61 selfloop flow, removed 39 redundant places. [2022-11-20 11:25:00,413 INFO L231 Difference]: Finished difference. Result has 462 places, 488 transitions, 6190 flow [2022-11-20 11:25:00,414 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5759, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=6190, PETRI_PLACES=462, PETRI_TRANSITIONS=488} [2022-11-20 11:25:00,415 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 374 predicate places. [2022-11-20 11:25:00,415 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 488 transitions, 6190 flow [2022-11-20 11:25:00,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:00,416 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:00,416 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:00,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-20 11:25:00,416 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:00,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:00,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1516929996, now seen corresponding path program 61 times [2022-11-20 11:25:00,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:00,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766367728] [2022-11-20 11:25:00,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:00,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:01,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:01,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:01,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766367728] [2022-11-20 11:25:01,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766367728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:01,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:01,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:25:01,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075645369] [2022-11-20 11:25:01,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:01,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:25:01,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:01,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:25:01,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:25:01,233 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:25:01,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 488 transitions, 6190 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:01,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:01,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:25:01,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:03,413 INFO L130 PetriNetUnfolder]: 404/1196 cut-off events. [2022-11-20 11:25:03,413 INFO L131 PetriNetUnfolder]: For 17786/17786 co-relation queries the response was YES. [2022-11-20 11:25:03,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8704 conditions, 1196 events. 404/1196 cut-off events. For 17786/17786 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7325 event pairs, 50 based on Foata normal form. 1/1195 useless extension candidates. Maximal degree in co-relation 8548. Up to 808 conditions per place. [2022-11-20 11:25:03,435 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 356 selfloop transitions, 107 changer transitions 27/529 dead transitions. [2022-11-20 11:25:03,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 529 transitions, 7735 flow [2022-11-20 11:25:03,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 11:25:03,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 11:25:03,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1757 transitions. [2022-11-20 11:25:03,438 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5664087685364281 [2022-11-20 11:25:03,439 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1757 transitions. [2022-11-20 11:25:03,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1757 transitions. [2022-11-20 11:25:03,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:03,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1757 transitions. [2022-11-20 11:25:03,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.24242424242424) internal successors, (1757), 33 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:03,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:03,444 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:03,444 INFO L175 Difference]: Start difference. First operand has 462 places, 488 transitions, 6190 flow. Second operand 33 states and 1757 transitions. [2022-11-20 11:25:03,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 529 transitions, 7735 flow [2022-11-20 11:25:03,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 529 transitions, 7449 flow, removed 72 selfloop flow, removed 26 redundant places. [2022-11-20 11:25:03,718 INFO L231 Difference]: Finished difference. Result has 471 places, 491 transitions, 6300 flow [2022-11-20 11:25:03,719 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5941, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=6300, PETRI_PLACES=471, PETRI_TRANSITIONS=491} [2022-11-20 11:25:03,720 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 383 predicate places. [2022-11-20 11:25:03,720 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 491 transitions, 6300 flow [2022-11-20 11:25:03,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:03,721 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:03,721 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:03,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-20 11:25:03,721 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:03,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:03,722 INFO L85 PathProgramCache]: Analyzing trace with hash 920423182, now seen corresponding path program 62 times [2022-11-20 11:25:03,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:03,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998208926] [2022-11-20 11:25:03,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:03,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:04,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:04,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:04,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998208926] [2022-11-20 11:25:04,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998208926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:04,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:04,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:25:04,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297454161] [2022-11-20 11:25:04,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:04,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:25:04,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:04,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:25:04,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:25:04,516 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:25:04,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 491 transitions, 6300 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:04,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:04,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:25:04,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:06,985 INFO L130 PetriNetUnfolder]: 406/1197 cut-off events. [2022-11-20 11:25:06,985 INFO L131 PetriNetUnfolder]: For 18036/18036 co-relation queries the response was YES. [2022-11-20 11:25:06,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8777 conditions, 1197 events. 406/1197 cut-off events. For 18036/18036 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7315 event pairs, 40 based on Foata normal form. 1/1197 useless extension candidates. Maximal degree in co-relation 8619. Up to 840 conditions per place. [2022-11-20 11:25:07,005 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 379 selfloop transitions, 94 changer transitions 22/534 dead transitions. [2022-11-20 11:25:07,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 534 transitions, 7799 flow [2022-11-20 11:25:07,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:25:07,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 11:25:07,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1900 transitions. [2022-11-20 11:25:07,008 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5614657210401891 [2022-11-20 11:25:07,008 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1900 transitions. [2022-11-20 11:25:07,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1900 transitions. [2022-11-20 11:25:07,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:07,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1900 transitions. [2022-11-20 11:25:07,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.77777777777778) internal successors, (1900), 36 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:07,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:07,014 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:07,014 INFO L175 Difference]: Start difference. First operand has 471 places, 491 transitions, 6300 flow. Second operand 36 states and 1900 transitions. [2022-11-20 11:25:07,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 534 transitions, 7799 flow [2022-11-20 11:25:07,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 534 transitions, 7513 flow, removed 64 selfloop flow, removed 29 redundant places. [2022-11-20 11:25:07,203 INFO L231 Difference]: Finished difference. Result has 483 places, 500 transitions, 6463 flow [2022-11-20 11:25:07,203 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6058, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=6463, PETRI_PLACES=483, PETRI_TRANSITIONS=500} [2022-11-20 11:25:07,203 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 395 predicate places. [2022-11-20 11:25:07,204 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 500 transitions, 6463 flow [2022-11-20 11:25:07,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:07,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:07,204 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:07,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-11-20 11:25:07,204 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:07,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:07,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1139507504, now seen corresponding path program 63 times [2022-11-20 11:25:07,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:07,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647454517] [2022-11-20 11:25:07,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:07,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:07,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:07,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647454517] [2022-11-20 11:25:07,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647454517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:07,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:07,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:25:07,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786041838] [2022-11-20 11:25:07,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:07,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:25:07,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:07,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:25:07,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:25:07,926 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:25:07,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 500 transitions, 6463 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:07,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:07,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:25:07,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:10,265 INFO L130 PetriNetUnfolder]: 399/1195 cut-off events. [2022-11-20 11:25:10,266 INFO L131 PetriNetUnfolder]: For 17685/17685 co-relation queries the response was YES. [2022-11-20 11:25:10,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8718 conditions, 1195 events. 399/1195 cut-off events. For 17685/17685 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7342 event pairs, 44 based on Foata normal form. 1/1194 useless extension candidates. Maximal degree in co-relation 8555. Up to 844 conditions per place. [2022-11-20 11:25:10,289 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 380 selfloop transitions, 88 changer transitions 19/526 dead transitions. [2022-11-20 11:25:10,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 526 transitions, 7610 flow [2022-11-20 11:25:10,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:25:10,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:25:10,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1791 transitions. [2022-11-20 11:25:10,292 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5603879849812266 [2022-11-20 11:25:10,292 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1791 transitions. [2022-11-20 11:25:10,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1791 transitions. [2022-11-20 11:25:10,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:10,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1791 transitions. [2022-11-20 11:25:10,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.6764705882353) internal successors, (1791), 34 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:10,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:10,296 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:10,296 INFO L175 Difference]: Start difference. First operand has 483 places, 500 transitions, 6463 flow. Second operand 34 states and 1791 transitions. [2022-11-20 11:25:10,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 526 transitions, 7610 flow [2022-11-20 11:25:10,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 526 transitions, 7384 flow, removed 56 selfloop flow, removed 28 redundant places. [2022-11-20 11:25:10,504 INFO L231 Difference]: Finished difference. Result has 489 places, 497 transitions, 6418 flow [2022-11-20 11:25:10,505 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6249, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=6418, PETRI_PLACES=489, PETRI_TRANSITIONS=497} [2022-11-20 11:25:10,505 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 401 predicate places. [2022-11-20 11:25:10,506 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 497 transitions, 6418 flow [2022-11-20 11:25:10,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:10,506 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:10,506 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:10,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-11-20 11:25:10,507 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:10,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:10,507 INFO L85 PathProgramCache]: Analyzing trace with hash -512865626, now seen corresponding path program 64 times [2022-11-20 11:25:10,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:10,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001810686] [2022-11-20 11:25:10,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:10,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:11,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:11,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001810686] [2022-11-20 11:25:11,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001810686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:11,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:11,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:25:11,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598521618] [2022-11-20 11:25:11,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:11,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:25:11,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:11,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:25:11,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:25:11,101 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:25:11,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 497 transitions, 6418 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:11,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:11,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:25:11,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:13,389 INFO L130 PetriNetUnfolder]: 406/1214 cut-off events. [2022-11-20 11:25:13,389 INFO L131 PetriNetUnfolder]: For 18057/18057 co-relation queries the response was YES. [2022-11-20 11:25:13,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8906 conditions, 1214 events. 406/1214 cut-off events. For 18057/18057 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7506 event pairs, 52 based on Foata normal form. 1/1212 useless extension candidates. Maximal degree in co-relation 8742. Up to 824 conditions per place. [2022-11-20 11:25:13,416 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 369 selfloop transitions, 107 changer transitions 22/537 dead transitions. [2022-11-20 11:25:13,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 537 transitions, 7911 flow [2022-11-20 11:25:13,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:25:13,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:25:13,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1858 transitions. [2022-11-20 11:25:13,419 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.564741641337386 [2022-11-20 11:25:13,419 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1858 transitions. [2022-11-20 11:25:13,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1858 transitions. [2022-11-20 11:25:13,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:13,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1858 transitions. [2022-11-20 11:25:13,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.08571428571429) internal successors, (1858), 35 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:13,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:13,424 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:13,424 INFO L175 Difference]: Start difference. First operand has 489 places, 497 transitions, 6418 flow. Second operand 35 states and 1858 transitions. [2022-11-20 11:25:13,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 537 transitions, 7911 flow [2022-11-20 11:25:13,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 537 transitions, 7635 flow, removed 22 selfloop flow, removed 36 redundant places. [2022-11-20 11:25:13,632 INFO L231 Difference]: Finished difference. Result has 490 places, 503 transitions, 6576 flow [2022-11-20 11:25:13,633 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6166, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6576, PETRI_PLACES=490, PETRI_TRANSITIONS=503} [2022-11-20 11:25:13,633 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 402 predicate places. [2022-11-20 11:25:13,633 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 503 transitions, 6576 flow [2022-11-20 11:25:13,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:13,634 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:13,634 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:13,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-11-20 11:25:13,635 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:13,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:13,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1877530548, now seen corresponding path program 65 times [2022-11-20 11:25:13,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:13,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264489174] [2022-11-20 11:25:13,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:13,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:14,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:14,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264489174] [2022-11-20 11:25:14,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264489174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:14,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:14,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:25:14,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585828798] [2022-11-20 11:25:14,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:14,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:25:14,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:14,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:25:14,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:25:14,371 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:25:14,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 503 transitions, 6576 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:14,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:14,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:25:14,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:16,559 INFO L130 PetriNetUnfolder]: 409/1245 cut-off events. [2022-11-20 11:25:16,559 INFO L131 PetriNetUnfolder]: For 19497/19497 co-relation queries the response was YES. [2022-11-20 11:25:16,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9216 conditions, 1245 events. 409/1245 cut-off events. For 19497/19497 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7900 event pairs, 59 based on Foata normal form. 1/1244 useless extension candidates. Maximal degree in co-relation 9050. Up to 863 conditions per place. [2022-11-20 11:25:16,583 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 389 selfloop transitions, 84 changer transitions 31/543 dead transitions. [2022-11-20 11:25:16,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 543 transitions, 8153 flow [2022-11-20 11:25:16,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:25:16,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:25:16,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1804 transitions. [2022-11-20 11:25:16,587 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644555694618273 [2022-11-20 11:25:16,587 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1804 transitions. [2022-11-20 11:25:16,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1804 transitions. [2022-11-20 11:25:16,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:16,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1804 transitions. [2022-11-20 11:25:16,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.05882352941177) internal successors, (1804), 34 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:16,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:16,595 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:16,595 INFO L175 Difference]: Start difference. First operand has 490 places, 503 transitions, 6576 flow. Second operand 34 states and 1804 transitions. [2022-11-20 11:25:16,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 543 transitions, 8153 flow [2022-11-20 11:25:16,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 543 transitions, 7873 flow, removed 71 selfloop flow, removed 28 redundant places. [2022-11-20 11:25:16,932 INFO L231 Difference]: Finished difference. Result has 499 places, 501 transitions, 6575 flow [2022-11-20 11:25:16,933 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6332, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=6575, PETRI_PLACES=499, PETRI_TRANSITIONS=501} [2022-11-20 11:25:16,934 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 411 predicate places. [2022-11-20 11:25:16,934 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 501 transitions, 6575 flow [2022-11-20 11:25:16,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:16,936 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:16,936 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:16,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-11-20 11:25:16,936 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:16,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:16,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1524726466, now seen corresponding path program 66 times [2022-11-20 11:25:16,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:16,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338612442] [2022-11-20 11:25:16,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:16,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:17,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:17,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:17,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338612442] [2022-11-20 11:25:17,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338612442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:17,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:17,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:25:17,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881319496] [2022-11-20 11:25:17,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:17,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:25:17,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:17,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:25:17,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:25:17,811 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:25:17,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 501 transitions, 6575 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:17,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:17,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:25:17,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:20,884 INFO L130 PetriNetUnfolder]: 442/1380 cut-off events. [2022-11-20 11:25:20,885 INFO L131 PetriNetUnfolder]: For 22184/22184 co-relation queries the response was YES. [2022-11-20 11:25:20,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10069 conditions, 1380 events. 442/1380 cut-off events. For 22184/22184 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9128 event pairs, 54 based on Foata normal form. 1/1379 useless extension candidates. Maximal degree in co-relation 9898. Up to 830 conditions per place. [2022-11-20 11:25:20,908 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 365 selfloop transitions, 189 changer transitions 22/615 dead transitions. [2022-11-20 11:25:20,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 615 transitions, 9319 flow [2022-11-20 11:25:20,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 11:25:20,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-20 11:25:20,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 2575 transitions. [2022-11-20 11:25:20,912 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5590534085974815 [2022-11-20 11:25:20,912 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 2575 transitions. [2022-11-20 11:25:20,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 2575 transitions. [2022-11-20 11:25:20,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:20,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 2575 transitions. [2022-11-20 11:25:20,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 52.55102040816327) internal successors, (2575), 49 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:20,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 94.0) internal successors, (4700), 50 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:20,918 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 94.0) internal successors, (4700), 50 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:20,919 INFO L175 Difference]: Start difference. First operand has 499 places, 501 transitions, 6575 flow. Second operand 49 states and 2575 transitions. [2022-11-20 11:25:20,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 615 transitions, 9319 flow [2022-11-20 11:25:21,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 615 transitions, 9031 flow, removed 74 selfloop flow, removed 32 redundant places. [2022-11-20 11:25:21,159 INFO L231 Difference]: Finished difference. Result has 516 places, 568 transitions, 7928 flow [2022-11-20 11:25:21,160 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6355, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=7928, PETRI_PLACES=516, PETRI_TRANSITIONS=568} [2022-11-20 11:25:21,160 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 428 predicate places. [2022-11-20 11:25:21,160 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 568 transitions, 7928 flow [2022-11-20 11:25:21,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:21,160 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:21,161 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:21,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-11-20 11:25:21,161 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:21,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:21,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1989330444, now seen corresponding path program 67 times [2022-11-20 11:25:21,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:21,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944858535] [2022-11-20 11:25:21,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:21,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:21,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:21,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944858535] [2022-11-20 11:25:21,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944858535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:21,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:21,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 11:25:21,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031031396] [2022-11-20 11:25:21,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:21,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:25:21,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:21,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:25:21,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:25:21,910 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:25:21,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 568 transitions, 7928 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:21,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:21,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:25:21,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:25,220 INFO L130 PetriNetUnfolder]: 438/1378 cut-off events. [2022-11-20 11:25:25,220 INFO L131 PetriNetUnfolder]: For 24112/24112 co-relation queries the response was YES. [2022-11-20 11:25:25,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10435 conditions, 1378 events. 438/1378 cut-off events. For 24112/24112 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9157 event pairs, 44 based on Foata normal form. 1/1377 useless extension candidates. Maximal degree in co-relation 10262. Up to 866 conditions per place. [2022-11-20 11:25:25,247 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 403 selfloop transitions, 151 changer transitions 24/617 dead transitions. [2022-11-20 11:25:25,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 617 transitions, 9755 flow [2022-11-20 11:25:25,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-20 11:25:25,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-11-20 11:25:25,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 2666 transitions. [2022-11-20 11:25:25,251 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5561118064246975 [2022-11-20 11:25:25,251 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 2666 transitions. [2022-11-20 11:25:25,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 2666 transitions. [2022-11-20 11:25:25,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:25,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 2666 transitions. [2022-11-20 11:25:25,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 52.27450980392157) internal successors, (2666), 51 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:25,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 94.0) internal successors, (4888), 52 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:25,258 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 94.0) internal successors, (4888), 52 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:25,258 INFO L175 Difference]: Start difference. First operand has 516 places, 568 transitions, 7928 flow. Second operand 51 states and 2666 transitions. [2022-11-20 11:25:25,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 617 transitions, 9755 flow [2022-11-20 11:25:25,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 617 transitions, 9290 flow, removed 151 selfloop flow, removed 33 redundant places. [2022-11-20 11:25:25,543 INFO L231 Difference]: Finished difference. Result has 536 places, 574 transitions, 8010 flow [2022-11-20 11:25:25,543 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7491, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=8010, PETRI_PLACES=536, PETRI_TRANSITIONS=574} [2022-11-20 11:25:25,544 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 448 predicate places. [2022-11-20 11:25:25,544 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 574 transitions, 8010 flow [2022-11-20 11:25:25,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:25,544 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:25,544 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:25,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-11-20 11:25:25,545 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:25,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:25,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1556785272, now seen corresponding path program 68 times [2022-11-20 11:25:25,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:25,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685881035] [2022-11-20 11:25:25,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:25,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:26,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:26,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685881035] [2022-11-20 11:25:26,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685881035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:26,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:26,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:25:26,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014282708] [2022-11-20 11:25:26,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:26,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:25:26,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:26,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:25:26,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:25:26,322 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:25:26,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 574 transitions, 8010 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:26,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:26,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:25:26,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:28,940 INFO L130 PetriNetUnfolder]: 447/1401 cut-off events. [2022-11-20 11:25:28,940 INFO L131 PetriNetUnfolder]: For 25002/25002 co-relation queries the response was YES. [2022-11-20 11:25:28,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10802 conditions, 1401 events. 447/1401 cut-off events. For 25002/25002 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 9346 event pairs, 57 based on Foata normal form. 1/1399 useless extension candidates. Maximal degree in co-relation 10621. Up to 947 conditions per place. [2022-11-20 11:25:28,964 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 448 selfloop transitions, 119 changer transitions 24/630 dead transitions. [2022-11-20 11:25:28,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 630 transitions, 10026 flow [2022-11-20 11:25:28,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 11:25:28,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 11:25:28,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2011 transitions. [2022-11-20 11:25:28,967 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.562989921612542 [2022-11-20 11:25:28,967 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2011 transitions. [2022-11-20 11:25:28,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2011 transitions. [2022-11-20 11:25:28,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:28,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2011 transitions. [2022-11-20 11:25:28,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.921052631578945) internal successors, (2011), 38 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:28,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:28,972 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:28,972 INFO L175 Difference]: Start difference. First operand has 536 places, 574 transitions, 8010 flow. Second operand 38 states and 2011 transitions. [2022-11-20 11:25:28,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 630 transitions, 10026 flow [2022-11-20 11:25:29,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 630 transitions, 9592 flow, removed 100 selfloop flow, removed 42 redundant places. [2022-11-20 11:25:29,262 INFO L231 Difference]: Finished difference. Result has 535 places, 591 transitions, 8255 flow [2022-11-20 11:25:29,262 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7600, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8255, PETRI_PLACES=535, PETRI_TRANSITIONS=591} [2022-11-20 11:25:29,263 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 447 predicate places. [2022-11-20 11:25:29,263 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 591 transitions, 8255 flow [2022-11-20 11:25:29,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:29,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:29,263 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:29,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-11-20 11:25:29,263 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:29,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:29,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1042239066, now seen corresponding path program 69 times [2022-11-20 11:25:29,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:29,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027411522] [2022-11-20 11:25:29,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:29,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:29,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:29,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027411522] [2022-11-20 11:25:29,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027411522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:29,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:29,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:25:29,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073630260] [2022-11-20 11:25:29,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:29,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:25:29,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:29,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:25:29,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:25:29,915 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:25:29,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 591 transitions, 8255 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:29,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:29,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:25:29,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:32,515 INFO L130 PetriNetUnfolder]: 447/1426 cut-off events. [2022-11-20 11:25:32,515 INFO L131 PetriNetUnfolder]: For 25535/25535 co-relation queries the response was YES. [2022-11-20 11:25:32,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10940 conditions, 1426 events. 447/1426 cut-off events. For 25535/25535 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9649 event pairs, 54 based on Foata normal form. 1/1425 useless extension candidates. Maximal degree in co-relation 10755. Up to 950 conditions per place. [2022-11-20 11:25:32,543 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 452 selfloop transitions, 118 changer transitions 22/631 dead transitions. [2022-11-20 11:25:32,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 631 transitions, 10060 flow [2022-11-20 11:25:32,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:25:32,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 11:25:32,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1908 transitions. [2022-11-20 11:25:32,547 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2022-11-20 11:25:32,547 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1908 transitions. [2022-11-20 11:25:32,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1908 transitions. [2022-11-20 11:25:32,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:32,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1908 transitions. [2022-11-20 11:25:32,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.0) internal successors, (1908), 36 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:32,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:32,552 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:32,552 INFO L175 Difference]: Start difference. First operand has 535 places, 591 transitions, 8255 flow. Second operand 36 states and 1908 transitions. [2022-11-20 11:25:32,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 631 transitions, 10060 flow [2022-11-20 11:25:32,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 631 transitions, 9781 flow, removed 64 selfloop flow, removed 30 redundant places. [2022-11-20 11:25:32,933 INFO L231 Difference]: Finished difference. Result has 545 places, 597 transitions, 8476 flow [2022-11-20 11:25:32,933 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8006, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8476, PETRI_PLACES=545, PETRI_TRANSITIONS=597} [2022-11-20 11:25:32,934 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 457 predicate places. [2022-11-20 11:25:32,934 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 597 transitions, 8476 flow [2022-11-20 11:25:32,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:32,934 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:32,934 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:32,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-11-20 11:25:32,935 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:32,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:32,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1046651676, now seen corresponding path program 70 times [2022-11-20 11:25:32,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:32,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328990440] [2022-11-20 11:25:32,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:32,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:33,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:33,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328990440] [2022-11-20 11:25:33,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328990440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:33,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:33,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:25:33,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582416645] [2022-11-20 11:25:33,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:33,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:25:33,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:33,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:25:33,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:25:33,557 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:25:33,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 597 transitions, 8476 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:33,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:33,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:25:33,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:36,097 INFO L130 PetriNetUnfolder]: 447/1438 cut-off events. [2022-11-20 11:25:36,098 INFO L131 PetriNetUnfolder]: For 27719/27719 co-relation queries the response was YES. [2022-11-20 11:25:36,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11175 conditions, 1438 events. 447/1438 cut-off events. For 27719/27719 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9850 event pairs, 41 based on Foata normal form. 1/1437 useless extension candidates. Maximal degree in co-relation 10984. Up to 932 conditions per place. [2022-11-20 11:25:36,129 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 441 selfloop transitions, 132 changer transitions 32/644 dead transitions. [2022-11-20 11:25:36,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 644 transitions, 10329 flow [2022-11-20 11:25:36,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:25:36,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 11:25:36,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1912 transitions. [2022-11-20 11:25:36,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2022-11-20 11:25:36,132 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1912 transitions. [2022-11-20 11:25:36,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1912 transitions. [2022-11-20 11:25:36,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:36,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1912 transitions. [2022-11-20 11:25:36,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.111111111111114) internal successors, (1912), 36 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:36,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:36,137 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:36,138 INFO L175 Difference]: Start difference. First operand has 545 places, 597 transitions, 8476 flow. Second operand 36 states and 1912 transitions. [2022-11-20 11:25:36,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 644 transitions, 10329 flow [2022-11-20 11:25:36,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 644 transitions, 10006 flow, removed 87 selfloop flow, removed 29 redundant places. [2022-11-20 11:25:36,560 INFO L231 Difference]: Finished difference. Result has 555 places, 594 transitions, 8486 flow [2022-11-20 11:25:36,560 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8197, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8486, PETRI_PLACES=555, PETRI_TRANSITIONS=594} [2022-11-20 11:25:36,561 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 467 predicate places. [2022-11-20 11:25:36,561 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 594 transitions, 8486 flow [2022-11-20 11:25:36,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:36,561 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:36,561 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:36,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-11-20 11:25:36,562 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:36,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:36,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1300957692, now seen corresponding path program 71 times [2022-11-20 11:25:36,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:36,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303259949] [2022-11-20 11:25:36,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:36,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:37,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:37,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303259949] [2022-11-20 11:25:37,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303259949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:37,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:37,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:25:37,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914715891] [2022-11-20 11:25:37,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:37,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:25:37,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:37,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:25:37,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:25:37,236 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:25:37,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 594 transitions, 8486 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:37,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:37,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:25:37,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:40,167 INFO L130 PetriNetUnfolder]: 443/1413 cut-off events. [2022-11-20 11:25:40,168 INFO L131 PetriNetUnfolder]: For 27436/27436 co-relation queries the response was YES. [2022-11-20 11:25:40,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11203 conditions, 1413 events. 443/1413 cut-off events. For 27436/27436 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9610 event pairs, 47 based on Foata normal form. 1/1411 useless extension candidates. Maximal degree in co-relation 11007. Up to 975 conditions per place. [2022-11-20 11:25:40,197 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 466 selfloop transitions, 106 changer transitions 22/633 dead transitions. [2022-11-20 11:25:40,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 633 transitions, 10306 flow [2022-11-20 11:25:40,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:25:40,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:25:40,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1951 transitions. [2022-11-20 11:25:40,200 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5609545715928694 [2022-11-20 11:25:40,201 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1951 transitions. [2022-11-20 11:25:40,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1951 transitions. [2022-11-20 11:25:40,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:40,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1951 transitions. [2022-11-20 11:25:40,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.729729729729726) internal successors, (1951), 37 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:40,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:40,205 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:40,205 INFO L175 Difference]: Start difference. First operand has 555 places, 594 transitions, 8486 flow. Second operand 37 states and 1951 transitions. [2022-11-20 11:25:40,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 633 transitions, 10306 flow [2022-11-20 11:25:40,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 633 transitions, 9965 flow, removed 38 selfloop flow, removed 32 redundant places. [2022-11-20 11:25:40,555 INFO L231 Difference]: Finished difference. Result has 561 places, 599 transitions, 8609 flow [2022-11-20 11:25:40,555 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8183, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8609, PETRI_PLACES=561, PETRI_TRANSITIONS=599} [2022-11-20 11:25:40,556 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 473 predicate places. [2022-11-20 11:25:40,556 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 599 transitions, 8609 flow [2022-11-20 11:25:40,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:40,557 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:40,557 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:40,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-11-20 11:25:40,557 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:40,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:40,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1965681016, now seen corresponding path program 72 times [2022-11-20 11:25:40,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:40,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426384979] [2022-11-20 11:25:40,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:40,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:41,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:41,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:41,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426384979] [2022-11-20 11:25:41,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426384979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:41,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:41,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:25:41,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028883899] [2022-11-20 11:25:41,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:41,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:25:41,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:41,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:25:41,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:25:41,200 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:25:41,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 599 transitions, 8609 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:41,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:41,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:25:41,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:43,746 INFO L130 PetriNetUnfolder]: 436/1421 cut-off events. [2022-11-20 11:25:43,746 INFO L131 PetriNetUnfolder]: For 27553/27553 co-relation queries the response was YES. [2022-11-20 11:25:43,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11085 conditions, 1421 events. 436/1421 cut-off events. For 27553/27553 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9747 event pairs, 55 based on Foata normal form. 1/1420 useless extension candidates. Maximal degree in co-relation 10887. Up to 961 conditions per place. [2022-11-20 11:25:43,776 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 458 selfloop transitions, 106 changer transitions 22/625 dead transitions. [2022-11-20 11:25:43,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 625 transitions, 10008 flow [2022-11-20 11:25:43,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:25:43,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:25:43,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1799 transitions. [2022-11-20 11:25:43,780 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5628911138923655 [2022-11-20 11:25:43,780 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1799 transitions. [2022-11-20 11:25:43,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1799 transitions. [2022-11-20 11:25:43,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:43,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1799 transitions. [2022-11-20 11:25:43,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.911764705882355) internal successors, (1799), 34 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:43,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:43,784 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:43,784 INFO L175 Difference]: Start difference. First operand has 561 places, 599 transitions, 8609 flow. Second operand 34 states and 1799 transitions. [2022-11-20 11:25:43,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 625 transitions, 10008 flow [2022-11-20 11:25:44,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 625 transitions, 9710 flow, removed 74 selfloop flow, removed 31 redundant places. [2022-11-20 11:25:44,130 INFO L231 Difference]: Finished difference. Result has 564 places, 593 transitions, 8494 flow [2022-11-20 11:25:44,131 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8327, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=8494, PETRI_PLACES=564, PETRI_TRANSITIONS=593} [2022-11-20 11:25:44,131 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 476 predicate places. [2022-11-20 11:25:44,131 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 593 transitions, 8494 flow [2022-11-20 11:25:44,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:44,132 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:44,132 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:44,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-11-20 11:25:44,132 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:44,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:44,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1548872244, now seen corresponding path program 73 times [2022-11-20 11:25:44,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:44,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44714991] [2022-11-20 11:25:44,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:44,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:44,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:44,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:44,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44714991] [2022-11-20 11:25:44,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44714991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:44,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:44,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:25:44,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976469879] [2022-11-20 11:25:44,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:44,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:25:44,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:44,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:25:44,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:25:44,821 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:25:44,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 593 transitions, 8494 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:44,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:44,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:25:44,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:47,761 INFO L130 PetriNetUnfolder]: 448/1444 cut-off events. [2022-11-20 11:25:47,762 INFO L131 PetriNetUnfolder]: For 27750/27750 co-relation queries the response was YES. [2022-11-20 11:25:47,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11373 conditions, 1444 events. 448/1444 cut-off events. For 27750/27750 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9893 event pairs, 54 based on Foata normal form. 1/1442 useless extension candidates. Maximal degree in co-relation 11174. Up to 923 conditions per place. [2022-11-20 11:25:47,794 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 416 selfloop transitions, 169 changer transitions 24/648 dead transitions. [2022-11-20 11:25:47,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 648 transitions, 10550 flow [2022-11-20 11:25:47,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 11:25:47,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-20 11:25:47,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2366 transitions. [2022-11-20 11:25:47,797 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5593380614657211 [2022-11-20 11:25:47,798 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2366 transitions. [2022-11-20 11:25:47,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2366 transitions. [2022-11-20 11:25:47,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:47,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2366 transitions. [2022-11-20 11:25:47,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 52.577777777777776) internal successors, (2366), 45 states have internal predecessors, (2366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:47,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:47,807 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:47,807 INFO L175 Difference]: Start difference. First operand has 564 places, 593 transitions, 8494 flow. Second operand 45 states and 2366 transitions. [2022-11-20 11:25:47,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 648 transitions, 10550 flow [2022-11-20 11:25:48,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 648 transitions, 10183 flow, removed 26 selfloop flow, removed 37 redundant places. [2022-11-20 11:25:48,152 INFO L231 Difference]: Finished difference. Result has 573 places, 610 transitions, 8943 flow [2022-11-20 11:25:48,153 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8161, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=8943, PETRI_PLACES=573, PETRI_TRANSITIONS=610} [2022-11-20 11:25:48,153 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 485 predicate places. [2022-11-20 11:25:48,153 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 610 transitions, 8943 flow [2022-11-20 11:25:48,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:48,154 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:48,154 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:48,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-11-20 11:25:48,154 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:48,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:48,155 INFO L85 PathProgramCache]: Analyzing trace with hash -2030521222, now seen corresponding path program 74 times [2022-11-20 11:25:48,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:48,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496658372] [2022-11-20 11:25:48,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:48,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:48,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:48,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:48,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496658372] [2022-11-20 11:25:48,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496658372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:48,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:48,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:25:48,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129240068] [2022-11-20 11:25:48,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:48,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:25:48,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:48,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:25:48,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:25:48,900 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:25:48,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 610 transitions, 8943 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:48,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:48,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:25:48,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:52,222 INFO L130 PetriNetUnfolder]: 448/1473 cut-off events. [2022-11-20 11:25:52,222 INFO L131 PetriNetUnfolder]: For 29479/29479 co-relation queries the response was YES. [2022-11-20 11:25:52,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11603 conditions, 1473 events. 448/1473 cut-off events. For 29479/29479 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10315 event pairs, 44 based on Foata normal form. 1/1472 useless extension candidates. Maximal degree in co-relation 11402. Up to 891 conditions per place. [2022-11-20 11:25:52,250 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 407 selfloop transitions, 183 changer transitions 32/661 dead transitions. [2022-11-20 11:25:52,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 661 transitions, 10919 flow [2022-11-20 11:25:52,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-20 11:25:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-20 11:25:52,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 2620 transitions. [2022-11-20 11:25:52,254 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2022-11-20 11:25:52,254 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 2620 transitions. [2022-11-20 11:25:52,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 2620 transitions. [2022-11-20 11:25:52,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:52,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 2620 transitions. [2022-11-20 11:25:52,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 52.4) internal successors, (2620), 50 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:52,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 94.0) internal successors, (4794), 51 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:52,260 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 94.0) internal successors, (4794), 51 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:52,260 INFO L175 Difference]: Start difference. First operand has 573 places, 610 transitions, 8943 flow. Second operand 50 states and 2620 transitions. [2022-11-20 11:25:52,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 661 transitions, 10919 flow [2022-11-20 11:25:52,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 661 transitions, 10506 flow, removed 87 selfloop flow, removed 38 redundant places. [2022-11-20 11:25:52,621 INFO L231 Difference]: Finished difference. Result has 590 places, 613 transitions, 9119 flow [2022-11-20 11:25:52,622 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8587, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=9119, PETRI_PLACES=590, PETRI_TRANSITIONS=613} [2022-11-20 11:25:52,622 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 502 predicate places. [2022-11-20 11:25:52,622 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 613 transitions, 9119 flow [2022-11-20 11:25:52,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:52,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:52,623 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:52,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-11-20 11:25:52,623 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:52,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:52,623 INFO L85 PathProgramCache]: Analyzing trace with hash 648024164, now seen corresponding path program 75 times [2022-11-20 11:25:52,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:52,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709366081] [2022-11-20 11:25:52,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:52,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:53,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:53,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709366081] [2022-11-20 11:25:53,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709366081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:53,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:53,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:25:53,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448476909] [2022-11-20 11:25:53,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:53,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:25:53,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:53,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:25:53,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:25:53,331 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:25:53,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 613 transitions, 9119 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:53,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:53,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:25:53,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:56,226 INFO L130 PetriNetUnfolder]: 444/1452 cut-off events. [2022-11-20 11:25:56,226 INFO L131 PetriNetUnfolder]: For 29256/29256 co-relation queries the response was YES. [2022-11-20 11:25:56,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11665 conditions, 1452 events. 444/1452 cut-off events. For 29256/29256 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10107 event pairs, 41 based on Foata normal form. 1/1451 useless extension candidates. Maximal degree in co-relation 11458. Up to 957 conditions per place. [2022-11-20 11:25:56,260 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 456 selfloop transitions, 130 changer transitions 32/657 dead transitions. [2022-11-20 11:25:56,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 657 transitions, 10996 flow [2022-11-20 11:25:56,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-20 11:25:56,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-20 11:25:56,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2264 transitions. [2022-11-20 11:25:56,264 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5601187530925285 [2022-11-20 11:25:56,264 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2264 transitions. [2022-11-20 11:25:56,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2264 transitions. [2022-11-20 11:25:56,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:56,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2264 transitions. [2022-11-20 11:25:56,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 52.651162790697676) internal successors, (2264), 43 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:56,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:56,269 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:56,269 INFO L175 Difference]: Start difference. First operand has 590 places, 613 transitions, 9119 flow. Second operand 43 states and 2264 transitions. [2022-11-20 11:25:56,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 657 transitions, 10996 flow [2022-11-20 11:25:56,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 657 transitions, 10500 flow, removed 57 selfloop flow, removed 46 redundant places. [2022-11-20 11:25:56,652 INFO L231 Difference]: Finished difference. Result has 588 places, 610 transitions, 8958 flow [2022-11-20 11:25:56,653 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8673, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=8958, PETRI_PLACES=588, PETRI_TRANSITIONS=610} [2022-11-20 11:25:56,654 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 500 predicate places. [2022-11-20 11:25:56,654 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 610 transitions, 8958 flow [2022-11-20 11:25:56,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:56,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:56,654 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:56,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-11-20 11:25:56,655 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:56,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:56,655 INFO L85 PathProgramCache]: Analyzing trace with hash -539184084, now seen corresponding path program 76 times [2022-11-20 11:25:56,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:56,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251637037] [2022-11-20 11:25:56,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:56,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:57,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:57,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:57,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251637037] [2022-11-20 11:25:57,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251637037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:57,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:57,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:25:57,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404642257] [2022-11-20 11:25:57,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:57,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:25:57,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:57,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:25:57,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:25:57,294 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:25:57,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 610 transitions, 8958 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:57,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:57,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:25:57,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:59,855 INFO L130 PetriNetUnfolder]: 442/1455 cut-off events. [2022-11-20 11:25:59,855 INFO L131 PetriNetUnfolder]: For 29115/29115 co-relation queries the response was YES. [2022-11-20 11:25:59,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11570 conditions, 1455 events. 442/1455 cut-off events. For 29115/29115 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 10044 event pairs, 44 based on Foata normal form. 1/1453 useless extension candidates. Maximal degree in co-relation 11363. Up to 1012 conditions per place. [2022-11-20 11:25:59,888 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 499 selfloop transitions, 90 changer transitions 22/650 dead transitions. [2022-11-20 11:25:59,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 650 transitions, 10827 flow [2022-11-20 11:25:59,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:25:59,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 11:25:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1901 transitions. [2022-11-20 11:25:59,891 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5617612293144209 [2022-11-20 11:25:59,891 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1901 transitions. [2022-11-20 11:25:59,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1901 transitions. [2022-11-20 11:25:59,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:59,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1901 transitions. [2022-11-20 11:25:59,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.80555555555556) internal successors, (1901), 36 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:59,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:59,896 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:59,896 INFO L175 Difference]: Start difference. First operand has 588 places, 610 transitions, 8958 flow. Second operand 36 states and 1901 transitions. [2022-11-20 11:25:59,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 650 transitions, 10827 flow [2022-11-20 11:26:00,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 650 transitions, 10451 flow, removed 74 selfloop flow, removed 37 redundant places. [2022-11-20 11:26:00,276 INFO L231 Difference]: Finished difference. Result has 588 places, 616 transitions, 9016 flow [2022-11-20 11:26:00,276 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8632, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9016, PETRI_PLACES=588, PETRI_TRANSITIONS=616} [2022-11-20 11:26:00,276 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 500 predicate places. [2022-11-20 11:26:00,277 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 616 transitions, 9016 flow [2022-11-20 11:26:00,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:00,277 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:00,277 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:26:00,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-11-20 11:26:00,277 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:00,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:00,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1628501694, now seen corresponding path program 77 times [2022-11-20 11:26:00,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:00,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290159508] [2022-11-20 11:26:00,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:00,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:00,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:26:00,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:00,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290159508] [2022-11-20 11:26:00,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290159508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:00,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:00,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:26:00,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048759210] [2022-11-20 11:26:00,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:00,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:26:00,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:00,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:26:00,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:26:00,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:26:00,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 616 transitions, 9016 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:00,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:00,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:26:00,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:03,439 INFO L130 PetriNetUnfolder]: 442/1449 cut-off events. [2022-11-20 11:26:03,440 INFO L131 PetriNetUnfolder]: For 30247/30247 co-relation queries the response was YES. [2022-11-20 11:26:03,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11685 conditions, 1449 events. 442/1449 cut-off events. For 30247/30247 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10051 event pairs, 49 based on Foata normal form. 1/1448 useless extension candidates. Maximal degree in co-relation 11475. Up to 969 conditions per place. [2022-11-20 11:26:03,503 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 471 selfloop transitions, 129 changer transitions 16/655 dead transitions. [2022-11-20 11:26:03,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 655 transitions, 11012 flow [2022-11-20 11:26:03,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:26:03,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:26:03,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1858 transitions. [2022-11-20 11:26:03,507 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.564741641337386 [2022-11-20 11:26:03,507 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1858 transitions. [2022-11-20 11:26:03,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1858 transitions. [2022-11-20 11:26:03,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:03,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1858 transitions. [2022-11-20 11:26:03,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.08571428571429) internal successors, (1858), 35 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:03,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:03,515 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:03,515 INFO L175 Difference]: Start difference. First operand has 588 places, 616 transitions, 9016 flow. Second operand 35 states and 1858 transitions. [2022-11-20 11:26:03,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 655 transitions, 11012 flow [2022-11-20 11:26:04,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 655 transitions, 10689 flow, removed 74 selfloop flow, removed 30 redundant places. [2022-11-20 11:26:04,212 INFO L231 Difference]: Finished difference. Result has 594 places, 627 transitions, 9382 flow [2022-11-20 11:26:04,213 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8719, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=9382, PETRI_PLACES=594, PETRI_TRANSITIONS=627} [2022-11-20 11:26:04,213 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 506 predicate places. [2022-11-20 11:26:04,214 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 627 transitions, 9382 flow [2022-11-20 11:26:04,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:04,214 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:04,214 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:26:04,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-11-20 11:26:04,215 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:04,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:04,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1039571604, now seen corresponding path program 78 times [2022-11-20 11:26:04,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:04,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423056356] [2022-11-20 11:26:04,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:04,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:04,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:26:04,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:04,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423056356] [2022-11-20 11:26:04,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423056356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:04,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:04,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:26:04,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493404345] [2022-11-20 11:26:04,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:04,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:26:04,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:04,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:26:04,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:26:04,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:26:04,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 627 transitions, 9382 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:04,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:04,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:26:04,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:07,790 INFO L130 PetriNetUnfolder]: 441/1459 cut-off events. [2022-11-20 11:26:07,790 INFO L131 PetriNetUnfolder]: For 32797/32797 co-relation queries the response was YES. [2022-11-20 11:26:07,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11775 conditions, 1459 events. 441/1459 cut-off events. For 32797/32797 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 10191 event pairs, 50 based on Foata normal form. 1/1457 useless extension candidates. Maximal degree in co-relation 11563. Up to 1017 conditions per place. [2022-11-20 11:26:07,826 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 498 selfloop transitions, 97 changer transitions 19/653 dead transitions. [2022-11-20 11:26:07,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 653 transitions, 10853 flow [2022-11-20 11:26:07,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:26:07,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:26:07,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1842 transitions. [2022-11-20 11:26:07,831 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5598784194528875 [2022-11-20 11:26:07,831 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1842 transitions. [2022-11-20 11:26:07,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1842 transitions. [2022-11-20 11:26:07,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:07,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1842 transitions. [2022-11-20 11:26:07,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.628571428571426) internal successors, (1842), 35 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:07,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:07,837 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:07,838 INFO L175 Difference]: Start difference. First operand has 594 places, 627 transitions, 9382 flow. Second operand 35 states and 1842 transitions. [2022-11-20 11:26:07,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 653 transitions, 10853 flow [2022-11-20 11:26:08,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 653 transitions, 10396 flow, removed 149 selfloop flow, removed 25 redundant places. [2022-11-20 11:26:08,276 INFO L231 Difference]: Finished difference. Result has 604 places, 624 transitions, 9125 flow [2022-11-20 11:26:08,277 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8933, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=9125, PETRI_PLACES=604, PETRI_TRANSITIONS=624} [2022-11-20 11:26:08,278 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 516 predicate places. [2022-11-20 11:26:08,278 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 624 transitions, 9125 flow [2022-11-20 11:26:08,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:08,278 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:08,279 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:26:08,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-11-20 11:26:08,279 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:08,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:08,280 INFO L85 PathProgramCache]: Analyzing trace with hash -879968222, now seen corresponding path program 79 times [2022-11-20 11:26:08,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:08,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145988867] [2022-11-20 11:26:08,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:08,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:08,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:26:08,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:08,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145988867] [2022-11-20 11:26:08,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145988867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:08,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:08,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 11:26:08,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744148085] [2022-11-20 11:26:08,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:08,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:26:08,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:08,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:26:08,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:26:08,957 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:26:08,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 624 transitions, 9125 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:08,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:08,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:26:08,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:11,845 INFO L130 PetriNetUnfolder]: 438/1444 cut-off events. [2022-11-20 11:26:11,845 INFO L131 PetriNetUnfolder]: For 31873/31873 co-relation queries the response was YES. [2022-11-20 11:26:11,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11626 conditions, 1444 events. 438/1444 cut-off events. For 31873/31873 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 10025 event pairs, 40 based on Foata normal form. 1/1441 useless extension candidates. Maximal degree in co-relation 11411. Up to 1001 conditions per place. [2022-11-20 11:26:11,877 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 492 selfloop transitions, 100 changer transitions 22/653 dead transitions. [2022-11-20 11:26:11,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 653 transitions, 10715 flow [2022-11-20 11:26:11,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 11:26:11,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 11:26:11,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1990 transitions. [2022-11-20 11:26:11,881 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5571108622620381 [2022-11-20 11:26:11,881 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1990 transitions. [2022-11-20 11:26:11,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1990 transitions. [2022-11-20 11:26:11,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:11,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1990 transitions. [2022-11-20 11:26:11,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.36842105263158) internal successors, (1990), 38 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:11,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:11,886 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:11,886 INFO L175 Difference]: Start difference. First operand has 604 places, 624 transitions, 9125 flow. Second operand 38 states and 1990 transitions. [2022-11-20 11:26:11,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 653 transitions, 10715 flow [2022-11-20 11:26:12,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 653 transitions, 10452 flow, removed 13 selfloop flow, removed 35 redundant places. [2022-11-20 11:26:12,329 INFO L231 Difference]: Finished difference. Result has 606 places, 621 transitions, 9118 flow [2022-11-20 11:26:12,329 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8880, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9118, PETRI_PLACES=606, PETRI_TRANSITIONS=621} [2022-11-20 11:26:12,330 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 518 predicate places. [2022-11-20 11:26:12,330 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 621 transitions, 9118 flow [2022-11-20 11:26:12,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:12,330 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:12,330 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:26:12,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-11-20 11:26:12,331 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:12,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:12,331 INFO L85 PathProgramCache]: Analyzing trace with hash -2128455458, now seen corresponding path program 80 times [2022-11-20 11:26:12,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:12,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199125741] [2022-11-20 11:26:12,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:12,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:12,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:26:12,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:12,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199125741] [2022-11-20 11:26:12,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199125741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:12,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:12,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:26:12,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538772405] [2022-11-20 11:26:12,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:12,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:26:12,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:12,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:26:12,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:26:12,937 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:26:12,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 621 transitions, 9118 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:12,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:12,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:26:12,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:15,306 INFO L130 PetriNetUnfolder]: 436/1422 cut-off events. [2022-11-20 11:26:15,306 INFO L131 PetriNetUnfolder]: For 33285/33285 co-relation queries the response was YES. [2022-11-20 11:26:15,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11686 conditions, 1422 events. 436/1422 cut-off events. For 33285/33285 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 9750 event pairs, 37 based on Foata normal form. 1/1420 useless extension candidates. Maximal degree in co-relation 11470. Up to 958 conditions per place. [2022-11-20 11:26:15,337 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 468 selfloop transitions, 126 changer transitions 21/654 dead transitions. [2022-11-20 11:26:15,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 654 transitions, 10921 flow [2022-11-20 11:26:15,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:26:15,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:26:15,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1705 transitions. [2022-11-20 11:26:15,340 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5668218085106383 [2022-11-20 11:26:15,340 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1705 transitions. [2022-11-20 11:26:15,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1705 transitions. [2022-11-20 11:26:15,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:15,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1705 transitions. [2022-11-20 11:26:15,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.28125) internal successors, (1705), 32 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:15,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:15,345 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:15,345 INFO L175 Difference]: Start difference. First operand has 606 places, 621 transitions, 9118 flow. Second operand 32 states and 1705 transitions. [2022-11-20 11:26:15,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 654 transitions, 10921 flow [2022-11-20 11:26:15,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 654 transitions, 10594 flow, removed 56 selfloop flow, removed 37 redundant places. [2022-11-20 11:26:15,772 INFO L231 Difference]: Finished difference. Result has 600 places, 623 transitions, 9277 flow [2022-11-20 11:26:15,773 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8833, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=9277, PETRI_PLACES=600, PETRI_TRANSITIONS=623} [2022-11-20 11:26:15,773 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 512 predicate places. [2022-11-20 11:26:15,773 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 623 transitions, 9277 flow [2022-11-20 11:26:15,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:15,774 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:15,774 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:26:15,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-11-20 11:26:15,774 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:15,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:15,775 INFO L85 PathProgramCache]: Analyzing trace with hash -962888412, now seen corresponding path program 81 times [2022-11-20 11:26:15,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:15,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931718741] [2022-11-20 11:26:15,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:15,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:16,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:26:16,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:16,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931718741] [2022-11-20 11:26:16,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931718741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:16,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:16,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:26:16,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047953368] [2022-11-20 11:26:16,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:16,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:26:16,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:16,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:26:16,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:26:16,378 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:26:16,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 623 transitions, 9277 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:16,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:16,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:26:16,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:18,847 INFO L130 PetriNetUnfolder]: 433/1410 cut-off events. [2022-11-20 11:26:18,847 INFO L131 PetriNetUnfolder]: For 31965/31965 co-relation queries the response was YES. [2022-11-20 11:26:18,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11563 conditions, 1410 events. 433/1410 cut-off events. For 31965/31965 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9671 event pairs, 40 based on Foata normal form. 1/1408 useless extension candidates. Maximal degree in co-relation 11348. Up to 1012 conditions per place. [2022-11-20 11:26:18,880 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 507 selfloop transitions, 84 changer transitions 19/649 dead transitions. [2022-11-20 11:26:18,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 649 transitions, 10744 flow [2022-11-20 11:26:18,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:26:18,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:26:18,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1792 transitions. [2022-11-20 11:26:18,883 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5607008760951189 [2022-11-20 11:26:18,883 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1792 transitions. [2022-11-20 11:26:18,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1792 transitions. [2022-11-20 11:26:18,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:18,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1792 transitions. [2022-11-20 11:26:18,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.705882352941174) internal successors, (1792), 34 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:18,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:18,887 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:18,888 INFO L175 Difference]: Start difference. First operand has 600 places, 623 transitions, 9277 flow. Second operand 34 states and 1792 transitions. [2022-11-20 11:26:18,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 649 transitions, 10744 flow [2022-11-20 11:26:19,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 649 transitions, 10336 flow, removed 95 selfloop flow, removed 29 redundant places. [2022-11-20 11:26:19,303 INFO L231 Difference]: Finished difference. Result has 604 places, 620 transitions, 9032 flow [2022-11-20 11:26:19,303 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8891, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=9032, PETRI_PLACES=604, PETRI_TRANSITIONS=620} [2022-11-20 11:26:19,304 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 516 predicate places. [2022-11-20 11:26:19,304 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 620 transitions, 9032 flow [2022-11-20 11:26:19,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:19,304 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:19,304 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:26:19,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-11-20 11:26:19,305 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:19,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:19,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1810588844, now seen corresponding path program 82 times [2022-11-20 11:26:19,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:19,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230301077] [2022-11-20 11:26:19,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:19,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:20,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:26:20,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:20,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230301077] [2022-11-20 11:26:20,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230301077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:20,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:20,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 11:26:20,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583684042] [2022-11-20 11:26:20,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:20,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:26:20,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:20,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:26:20,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:26:20,032 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:26:20,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 620 transitions, 9032 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:20,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:20,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:26:20,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:22,786 INFO L130 PetriNetUnfolder]: 428/1386 cut-off events. [2022-11-20 11:26:22,786 INFO L131 PetriNetUnfolder]: For 28223/28223 co-relation queries the response was YES. [2022-11-20 11:26:22,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11138 conditions, 1386 events. 428/1386 cut-off events. For 28223/28223 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9409 event pairs, 50 based on Foata normal form. 1/1384 useless extension candidates. Maximal degree in co-relation 10923. Up to 986 conditions per place. [2022-11-20 11:26:22,810 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 490 selfloop transitions, 72 changer transitions 38/639 dead transitions. [2022-11-20 11:26:22,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 639 transitions, 10310 flow [2022-11-20 11:26:22,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:26:22,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:26:22,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1834 transitions. [2022-11-20 11:26:22,813 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2022-11-20 11:26:22,813 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1834 transitions. [2022-11-20 11:26:22,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1834 transitions. [2022-11-20 11:26:22,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:22,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1834 transitions. [2022-11-20 11:26:22,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.4) internal successors, (1834), 35 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:22,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:22,816 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:22,816 INFO L175 Difference]: Start difference. First operand has 604 places, 620 transitions, 9032 flow. Second operand 35 states and 1834 transitions. [2022-11-20 11:26:22,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 639 transitions, 10310 flow [2022-11-20 11:26:23,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 639 transitions, 10066 flow, removed 13 selfloop flow, removed 35 redundant places. [2022-11-20 11:26:23,112 INFO L231 Difference]: Finished difference. Result has 599 places, 592 transitions, 8529 flow [2022-11-20 11:26:23,113 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8794, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8529, PETRI_PLACES=599, PETRI_TRANSITIONS=592} [2022-11-20 11:26:23,113 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 511 predicate places. [2022-11-20 11:26:23,113 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 592 transitions, 8529 flow [2022-11-20 11:26:23,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:23,113 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:23,113 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:26:23,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-11-20 11:26:23,114 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:23,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:23,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1384972958, now seen corresponding path program 83 times [2022-11-20 11:26:23,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:23,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41113466] [2022-11-20 11:26:23,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:23,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:23,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:26:23,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:23,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41113466] [2022-11-20 11:26:23,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41113466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:23,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:23,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:26:23,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835070116] [2022-11-20 11:26:23,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:23,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:26:23,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:23,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:26:23,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:26:23,598 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:26:23,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 592 transitions, 8529 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:23,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:23,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:26:23,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:25,717 INFO L130 PetriNetUnfolder]: 424/1365 cut-off events. [2022-11-20 11:26:25,718 INFO L131 PetriNetUnfolder]: For 27183/27183 co-relation queries the response was YES. [2022-11-20 11:26:25,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10802 conditions, 1365 events. 424/1365 cut-off events. For 27183/27183 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9183 event pairs, 43 based on Foata normal form. 1/1363 useless extension candidates. Maximal degree in co-relation 10592. Up to 945 conditions per place. [2022-11-20 11:26:25,739 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 458 selfloop transitions, 105 changer transitions 19/621 dead transitions. [2022-11-20 11:26:25,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 621 transitions, 9960 flow [2022-11-20 11:26:25,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:26:25,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:26:25,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1850 transitions. [2022-11-20 11:26:25,741 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5623100303951368 [2022-11-20 11:26:25,741 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1850 transitions. [2022-11-20 11:26:25,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1850 transitions. [2022-11-20 11:26:25,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:25,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1850 transitions. [2022-11-20 11:26:25,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.857142857142854) internal successors, (1850), 35 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:25,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:25,745 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:25,745 INFO L175 Difference]: Start difference. First operand has 599 places, 592 transitions, 8529 flow. Second operand 35 states and 1850 transitions. [2022-11-20 11:26:25,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 621 transitions, 9960 flow [2022-11-20 11:26:26,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 621 transitions, 9575 flow, removed 39 selfloop flow, removed 45 redundant places. [2022-11-20 11:26:26,035 INFO L231 Difference]: Finished difference. Result has 564 places, 589 transitions, 8357 flow [2022-11-20 11:26:26,035 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8158, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8357, PETRI_PLACES=564, PETRI_TRANSITIONS=589} [2022-11-20 11:26:26,036 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 476 predicate places. [2022-11-20 11:26:26,036 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 589 transitions, 8357 flow [2022-11-20 11:26:26,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:26,036 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:26,036 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:26:26,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-11-20 11:26:26,036 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:26,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:26,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1947784342, now seen corresponding path program 84 times [2022-11-20 11:26:26,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:26,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88214127] [2022-11-20 11:26:26,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:26,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:26:26,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:26,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88214127] [2022-11-20 11:26:26,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88214127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:26,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:26,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:26:26,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910235513] [2022-11-20 11:26:26,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:26,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:26:26,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:26,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:26:26,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:26:26,571 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:26:26,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 589 transitions, 8357 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:26,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:26,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:26:26,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:28,925 INFO L130 PetriNetUnfolder]: 430/1371 cut-off events. [2022-11-20 11:26:28,925 INFO L131 PetriNetUnfolder]: For 27027/27027 co-relation queries the response was YES. [2022-11-20 11:26:28,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10885 conditions, 1371 events. 430/1371 cut-off events. For 27027/27027 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9167 event pairs, 52 based on Foata normal form. 1/1369 useless extension candidates. Maximal degree in co-relation 10685. Up to 934 conditions per place. [2022-11-20 11:26:28,955 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 452 selfloop transitions, 118 changer transitions 22/631 dead transitions. [2022-11-20 11:26:28,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 631 transitions, 10197 flow [2022-11-20 11:26:28,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 11:26:28,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 11:26:28,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2008 transitions. [2022-11-20 11:26:28,958 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5621500559910414 [2022-11-20 11:26:28,958 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2008 transitions. [2022-11-20 11:26:28,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2008 transitions. [2022-11-20 11:26:28,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:28,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2008 transitions. [2022-11-20 11:26:28,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.8421052631579) internal successors, (2008), 38 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:28,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:28,962 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:28,962 INFO L175 Difference]: Start difference. First operand has 564 places, 589 transitions, 8357 flow. Second operand 38 states and 2008 transitions. [2022-11-20 11:26:28,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 631 transitions, 10197 flow [2022-11-20 11:26:29,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 631 transitions, 9903 flow, removed 24 selfloop flow, removed 35 redundant places. [2022-11-20 11:26:29,341 INFO L231 Difference]: Finished difference. Result has 569 places, 594 transitions, 8551 flow [2022-11-20 11:26:29,341 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8087, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8551, PETRI_PLACES=569, PETRI_TRANSITIONS=594} [2022-11-20 11:26:29,341 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 481 predicate places. [2022-11-20 11:26:29,342 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 594 transitions, 8551 flow [2022-11-20 11:26:29,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:29,342 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:29,342 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:26:29,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-11-20 11:26:29,342 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:29,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:29,343 INFO L85 PathProgramCache]: Analyzing trace with hash -657749404, now seen corresponding path program 85 times [2022-11-20 11:26:29,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:29,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935050315] [2022-11-20 11:26:29,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:29,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:29,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:26:29,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:29,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935050315] [2022-11-20 11:26:29,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935050315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:29,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:29,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:26:29,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924727860] [2022-11-20 11:26:29,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:29,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:26:29,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:29,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:26:29,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:26:29,866 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:26:29,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 594 transitions, 8551 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:29,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:29,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:26:29,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:31,894 INFO L130 PetriNetUnfolder]: 423/1376 cut-off events. [2022-11-20 11:26:31,894 INFO L131 PetriNetUnfolder]: For 27670/27670 co-relation queries the response was YES. [2022-11-20 11:26:31,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10859 conditions, 1376 events. 423/1376 cut-off events. For 27670/27670 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9309 event pairs, 51 based on Foata normal form. 1/1374 useless extension candidates. Maximal degree in co-relation 10656. Up to 946 conditions per place. [2022-11-20 11:26:31,921 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 456 selfloop transitions, 109 changer transitions 19/623 dead transitions. [2022-11-20 11:26:31,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 623 transitions, 9990 flow [2022-11-20 11:26:31,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:26:31,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 11:26:31,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1899 transitions. [2022-11-20 11:26:31,923 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5611702127659575 [2022-11-20 11:26:31,923 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1899 transitions. [2022-11-20 11:26:31,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1899 transitions. [2022-11-20 11:26:31,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:31,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1899 transitions. [2022-11-20 11:26:31,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.75) internal successors, (1899), 36 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:31,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:31,927 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:31,927 INFO L175 Difference]: Start difference. First operand has 569 places, 594 transitions, 8551 flow. Second operand 36 states and 1899 transitions. [2022-11-20 11:26:31,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 623 transitions, 9990 flow [2022-11-20 11:26:32,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 623 transitions, 9750 flow, removed 49 selfloop flow, removed 31 redundant places. [2022-11-20 11:26:32,179 INFO L231 Difference]: Finished difference. Result has 574 places, 591 transitions, 8529 flow [2022-11-20 11:26:32,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8319, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8529, PETRI_PLACES=574, PETRI_TRANSITIONS=591} [2022-11-20 11:26:32,180 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 486 predicate places. [2022-11-20 11:26:32,180 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 591 transitions, 8529 flow [2022-11-20 11:26:32,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:32,180 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:32,180 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:26:32,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-11-20 11:26:32,181 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:32,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:32,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1869742924, now seen corresponding path program 86 times [2022-11-20 11:26:32,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:32,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592544212] [2022-11-20 11:26:32,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:32,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:32,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:26:32,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:32,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592544212] [2022-11-20 11:26:32,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592544212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:32,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:32,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:26:32,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095899711] [2022-11-20 11:26:32,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:32,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:26:32,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:32,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:26:32,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:26:32,660 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:26:32,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 591 transitions, 8529 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:32,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:32,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:26:32,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:34,492 INFO L130 PetriNetUnfolder]: 422/1381 cut-off events. [2022-11-20 11:26:34,492 INFO L131 PetriNetUnfolder]: For 28764/28764 co-relation queries the response was YES. [2022-11-20 11:26:34,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10967 conditions, 1381 events. 422/1381 cut-off events. For 28764/28764 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9357 event pairs, 42 based on Foata normal form. 1/1379 useless extension candidates. Maximal degree in co-relation 10762. Up to 892 conditions per place. [2022-11-20 11:26:34,520 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 431 selfloop transitions, 146 changer transitions 23/639 dead transitions. [2022-11-20 11:26:34,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 639 transitions, 10493 flow [2022-11-20 11:26:34,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:26:34,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:26:34,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1804 transitions. [2022-11-20 11:26:34,523 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644555694618273 [2022-11-20 11:26:34,523 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1804 transitions. [2022-11-20 11:26:34,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1804 transitions. [2022-11-20 11:26:34,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:34,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1804 transitions. [2022-11-20 11:26:34,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.05882352941177) internal successors, (1804), 34 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:34,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:34,528 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:34,528 INFO L175 Difference]: Start difference. First operand has 574 places, 591 transitions, 8529 flow. Second operand 34 states and 1804 transitions. [2022-11-20 11:26:34,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 639 transitions, 10493 flow [2022-11-20 11:26:34,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 639 transitions, 10144 flow, removed 17 selfloop flow, removed 38 redundant places. [2022-11-20 11:26:34,856 INFO L231 Difference]: Finished difference. Result has 568 places, 598 transitions, 8751 flow [2022-11-20 11:26:34,856 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8203, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=8751, PETRI_PLACES=568, PETRI_TRANSITIONS=598} [2022-11-20 11:26:34,857 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 480 predicate places. [2022-11-20 11:26:34,857 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 598 transitions, 8751 flow [2022-11-20 11:26:34,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:34,857 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:34,857 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:26:34,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-11-20 11:26:34,857 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:34,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:34,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1734526900, now seen corresponding path program 87 times [2022-11-20 11:26:34,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:34,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125548055] [2022-11-20 11:26:34,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:34,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:35,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:26:35,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:35,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125548055] [2022-11-20 11:26:35,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125548055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:35,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:35,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:26:35,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349161481] [2022-11-20 11:26:35,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:35,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:26:35,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:35,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:26:35,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:26:35,436 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:26:35,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 598 transitions, 8751 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:35,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:35,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:26:35,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:37,525 INFO L130 PetriNetUnfolder]: 423/1353 cut-off events. [2022-11-20 11:26:37,525 INFO L131 PetriNetUnfolder]: For 29665/29665 co-relation queries the response was YES. [2022-11-20 11:26:37,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10983 conditions, 1353 events. 423/1353 cut-off events. For 29665/29665 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9025 event pairs, 51 based on Foata normal form. 1/1351 useless extension candidates. Maximal degree in co-relation 10780. Up to 882 conditions per place. [2022-11-20 11:26:37,557 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 428 selfloop transitions, 149 changer transitions 21/637 dead transitions. [2022-11-20 11:26:37,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 637 transitions, 10553 flow [2022-11-20 11:26:37,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:26:37,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:26:37,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1858 transitions. [2022-11-20 11:26:37,560 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.564741641337386 [2022-11-20 11:26:37,560 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1858 transitions. [2022-11-20 11:26:37,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1858 transitions. [2022-11-20 11:26:37,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:37,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1858 transitions. [2022-11-20 11:26:37,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.08571428571429) internal successors, (1858), 35 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:37,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:37,564 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:37,564 INFO L175 Difference]: Start difference. First operand has 568 places, 598 transitions, 8751 flow. Second operand 35 states and 1858 transitions. [2022-11-20 11:26:37,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 637 transitions, 10553 flow [2022-11-20 11:26:37,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 637 transitions, 10166 flow, removed 104 selfloop flow, removed 28 redundant places. [2022-11-20 11:26:37,892 INFO L231 Difference]: Finished difference. Result has 576 places, 599 transitions, 8843 flow [2022-11-20 11:26:37,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8428, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8843, PETRI_PLACES=576, PETRI_TRANSITIONS=599} [2022-11-20 11:26:37,893 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 488 predicate places. [2022-11-20 11:26:37,893 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 599 transitions, 8843 flow [2022-11-20 11:26:37,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:37,893 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:37,893 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:26:37,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-11-20 11:26:37,893 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:37,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:37,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1299867540, now seen corresponding path program 88 times [2022-11-20 11:26:37,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:37,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243545654] [2022-11-20 11:26:37,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:37,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:38,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:26:38,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:38,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243545654] [2022-11-20 11:26:38,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243545654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:38,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:38,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:26:38,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042716502] [2022-11-20 11:26:38,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:38,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:26:38,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:38,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:26:38,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:26:38,405 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:26:38,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 599 transitions, 8843 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:38,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:38,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:26:38,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:40,630 INFO L130 PetriNetUnfolder]: 417/1336 cut-off events. [2022-11-20 11:26:40,630 INFO L131 PetriNetUnfolder]: For 27140/27140 co-relation queries the response was YES. [2022-11-20 11:26:40,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10715 conditions, 1336 events. 417/1336 cut-off events. For 27140/27140 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 8819 event pairs, 40 based on Foata normal form. 1/1333 useless extension candidates. Maximal degree in co-relation 10510. Up to 852 conditions per place. [2022-11-20 11:26:40,654 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 409 selfloop transitions, 139 changer transitions 43/630 dead transitions. [2022-11-20 11:26:40,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 630 transitions, 10308 flow [2022-11-20 11:26:40,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 11:26:40,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 11:26:40,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2006 transitions. [2022-11-20 11:26:40,657 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5615901455767077 [2022-11-20 11:26:40,657 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2006 transitions. [2022-11-20 11:26:40,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2006 transitions. [2022-11-20 11:26:40,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:40,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2006 transitions. [2022-11-20 11:26:40,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.78947368421053) internal successors, (2006), 38 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:40,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:40,662 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:40,663 INFO L175 Difference]: Start difference. First operand has 576 places, 599 transitions, 8843 flow. Second operand 38 states and 2006 transitions. [2022-11-20 11:26:40,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 630 transitions, 10308 flow [2022-11-20 11:26:40,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 630 transitions, 9983 flow, removed 45 selfloop flow, removed 34 redundant places. [2022-11-20 11:26:40,975 INFO L231 Difference]: Finished difference. Result has 582 places, 571 transitions, 8437 flow [2022-11-20 11:26:40,976 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8532, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8437, PETRI_PLACES=582, PETRI_TRANSITIONS=571} [2022-11-20 11:26:40,976 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 494 predicate places. [2022-11-20 11:26:40,976 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 571 transitions, 8437 flow [2022-11-20 11:26:40,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:40,976 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:40,976 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:26:40,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-11-20 11:26:40,977 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:40,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:40,977 INFO L85 PathProgramCache]: Analyzing trace with hash 310374354, now seen corresponding path program 89 times [2022-11-20 11:26:40,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:40,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863716557] [2022-11-20 11:26:40,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:40,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:26:41,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:41,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863716557] [2022-11-20 11:26:41,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863716557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:41,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:41,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:26:41,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297750917] [2022-11-20 11:26:41,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:41,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:26:41,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:41,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:26:41,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:26:41,446 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:26:41,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 571 transitions, 8437 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:41,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:41,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:26:41,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:43,423 INFO L130 PetriNetUnfolder]: 405/1314 cut-off events. [2022-11-20 11:26:43,423 INFO L131 PetriNetUnfolder]: For 27360/27360 co-relation queries the response was YES. [2022-11-20 11:26:43,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10685 conditions, 1314 events. 405/1314 cut-off events. For 27360/27360 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8723 event pairs, 43 based on Foata normal form. 1/1313 useless extension candidates. Maximal degree in co-relation 10480. Up to 881 conditions per place. [2022-11-20 11:26:43,448 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 434 selfloop transitions, 109 changer transitions 23/605 dead transitions. [2022-11-20 11:26:43,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 605 transitions, 10095 flow [2022-11-20 11:26:43,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 11:26:43,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 11:26:43,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1755 transitions. [2022-11-20 11:26:43,451 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5657640232108317 [2022-11-20 11:26:43,451 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1755 transitions. [2022-11-20 11:26:43,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1755 transitions. [2022-11-20 11:26:43,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:43,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1755 transitions. [2022-11-20 11:26:43,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.18181818181818) internal successors, (1755), 33 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:43,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:43,454 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:43,454 INFO L175 Difference]: Start difference. First operand has 582 places, 571 transitions, 8437 flow. Second operand 33 states and 1755 transitions. [2022-11-20 11:26:43,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 605 transitions, 10095 flow [2022-11-20 11:26:43,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 605 transitions, 9570 flow, removed 72 selfloop flow, removed 43 redundant places. [2022-11-20 11:26:43,844 INFO L231 Difference]: Finished difference. Result has 567 places, 571 transitions, 8267 flow [2022-11-20 11:26:43,844 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7934, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=8267, PETRI_PLACES=567, PETRI_TRANSITIONS=571} [2022-11-20 11:26:43,845 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 479 predicate places. [2022-11-20 11:26:43,845 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 571 transitions, 8267 flow [2022-11-20 11:26:43,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:43,845 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:43,845 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:26:43,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-11-20 11:26:43,845 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:43,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:43,846 INFO L85 PathProgramCache]: Analyzing trace with hash -596217238, now seen corresponding path program 90 times [2022-11-20 11:26:43,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:43,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163962934] [2022-11-20 11:26:43,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:43,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:44,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:26:44,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:44,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163962934] [2022-11-20 11:26:44,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163962934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:44,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:44,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:26:44,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979834786] [2022-11-20 11:26:44,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:44,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:26:44,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:44,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:26:44,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:26:44,453 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:26:44,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 571 transitions, 8267 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:44,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:44,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:26:44,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:47,049 INFO L130 PetriNetUnfolder]: 407/1309 cut-off events. [2022-11-20 11:26:47,049 INFO L131 PetriNetUnfolder]: For 29227/29227 co-relation queries the response was YES. [2022-11-20 11:26:47,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10672 conditions, 1309 events. 407/1309 cut-off events. For 29227/29227 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8664 event pairs, 36 based on Foata normal form. 1/1309 useless extension candidates. Maximal degree in co-relation 10472. Up to 832 conditions per place. [2022-11-20 11:26:47,074 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 378 selfloop transitions, 175 changer transitions 22/614 dead transitions. [2022-11-20 11:26:47,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 614 transitions, 10149 flow [2022-11-20 11:26:47,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-20 11:26:47,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-20 11:26:47,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2465 transitions. [2022-11-20 11:26:47,078 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5579447713897692 [2022-11-20 11:26:47,078 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 2465 transitions. [2022-11-20 11:26:47,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 2465 transitions. [2022-11-20 11:26:47,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:47,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 2465 transitions. [2022-11-20 11:26:47,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 52.4468085106383) internal successors, (2465), 47 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:47,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 94.0) internal successors, (4512), 48 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:47,082 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 94.0) internal successors, (4512), 48 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:47,083 INFO L175 Difference]: Start difference. First operand has 567 places, 571 transitions, 8267 flow. Second operand 47 states and 2465 transitions. [2022-11-20 11:26:47,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 614 transitions, 10149 flow [2022-11-20 11:26:47,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 614 transitions, 9849 flow, removed 57 selfloop flow, removed 32 redundant places. [2022-11-20 11:26:47,364 INFO L231 Difference]: Finished difference. Result has 587 places, 577 transitions, 8648 flow [2022-11-20 11:26:47,364 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7995, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=8648, PETRI_PLACES=587, PETRI_TRANSITIONS=577} [2022-11-20 11:26:47,365 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 499 predicate places. [2022-11-20 11:26:47,365 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 577 transitions, 8648 flow [2022-11-20 11:26:47,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:47,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:47,365 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:26:47,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-11-20 11:26:47,365 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:47,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:47,366 INFO L85 PathProgramCache]: Analyzing trace with hash 618312006, now seen corresponding path program 91 times [2022-11-20 11:26:47,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:47,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717878198] [2022-11-20 11:26:47,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:47,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:48,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:26:48,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:48,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717878198] [2022-11-20 11:26:48,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717878198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:48,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:48,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:26:48,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982408549] [2022-11-20 11:26:48,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:48,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:26:48,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:48,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:26:48,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:26:48,158 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:26:48,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 577 transitions, 8648 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:48,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:48,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:26:48,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:50,708 INFO L130 PetriNetUnfolder]: 401/1301 cut-off events. [2022-11-20 11:26:50,708 INFO L131 PetriNetUnfolder]: For 28464/28464 co-relation queries the response was YES. [2022-11-20 11:26:50,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10723 conditions, 1301 events. 401/1301 cut-off events. For 28464/28464 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 8645 event pairs, 43 based on Foata normal form. 1/1300 useless extension candidates. Maximal degree in co-relation 10520. Up to 851 conditions per place. [2022-11-20 11:26:50,734 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 389 selfloop transitions, 158 changer transitions 22/608 dead transitions. [2022-11-20 11:26:50,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 608 transitions, 10098 flow [2022-11-20 11:26:50,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 11:26:50,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-20 11:26:50,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2358 transitions. [2022-11-20 11:26:50,737 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2022-11-20 11:26:50,737 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2358 transitions. [2022-11-20 11:26:50,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2358 transitions. [2022-11-20 11:26:50,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:50,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2358 transitions. [2022-11-20 11:26:50,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 52.4) internal successors, (2358), 45 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:50,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:50,742 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:50,742 INFO L175 Difference]: Start difference. First operand has 587 places, 577 transitions, 8648 flow. Second operand 45 states and 2358 transitions. [2022-11-20 11:26:50,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 608 transitions, 10098 flow [2022-11-20 11:26:51,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 608 transitions, 9771 flow, removed 60 selfloop flow, removed 40 redundant places. [2022-11-20 11:26:51,055 INFO L231 Difference]: Finished difference. Result has 592 places, 572 transitions, 8653 flow [2022-11-20 11:26:51,055 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8338, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=8653, PETRI_PLACES=592, PETRI_TRANSITIONS=572} [2022-11-20 11:26:51,056 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 504 predicate places. [2022-11-20 11:26:51,056 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 572 transitions, 8653 flow [2022-11-20 11:26:51,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:51,056 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:51,056 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:26:51,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-11-20 11:26:51,056 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:51,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:51,057 INFO L85 PathProgramCache]: Analyzing trace with hash 944180584, now seen corresponding path program 92 times [2022-11-20 11:26:51,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:51,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412880738] [2022-11-20 11:26:51,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:51,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:26:51,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:51,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412880738] [2022-11-20 11:26:51,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412880738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:51,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:51,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:26:51,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242367386] [2022-11-20 11:26:51,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:51,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:26:51,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:51,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:26:51,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:26:51,559 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:26:51,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 572 transitions, 8653 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:51,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:51,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:26:51,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:54,032 INFO L130 PetriNetUnfolder]: 406/1315 cut-off events. [2022-11-20 11:26:54,032 INFO L131 PetriNetUnfolder]: For 29971/29971 co-relation queries the response was YES. [2022-11-20 11:26:54,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11020 conditions, 1315 events. 406/1315 cut-off events. For 29971/29971 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 8742 event pairs, 42 based on Foata normal form. 1/1314 useless extension candidates. Maximal degree in co-relation 10815. Up to 757 conditions per place. [2022-11-20 11:26:54,054 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 334 selfloop transitions, 230 changer transitions 21/624 dead transitions. [2022-11-20 11:26:54,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 624 transitions, 10807 flow [2022-11-20 11:26:54,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-20 11:26:54,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-11-20 11:26:54,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2423 transitions. [2022-11-20 11:26:54,057 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5603607770582794 [2022-11-20 11:26:54,058 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 2423 transitions. [2022-11-20 11:26:54,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 2423 transitions. [2022-11-20 11:26:54,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:54,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 2423 transitions. [2022-11-20 11:26:54,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 52.67391304347826) internal successors, (2423), 46 states have internal predecessors, (2423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:54,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 94.0) internal successors, (4418), 47 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:54,062 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 94.0) internal successors, (4418), 47 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:54,062 INFO L175 Difference]: Start difference. First operand has 592 places, 572 transitions, 8653 flow. Second operand 46 states and 2423 transitions. [2022-11-20 11:26:54,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 624 transitions, 10807 flow [2022-11-20 11:26:54,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 624 transitions, 10327 flow, removed 24 selfloop flow, removed 46 redundant places. [2022-11-20 11:26:54,358 INFO L231 Difference]: Finished difference. Result has 591 places, 582 transitions, 9124 flow [2022-11-20 11:26:54,358 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8208, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=9124, PETRI_PLACES=591, PETRI_TRANSITIONS=582} [2022-11-20 11:26:54,359 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 503 predicate places. [2022-11-20 11:26:54,359 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 582 transitions, 9124 flow [2022-11-20 11:26:54,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:54,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:54,360 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:26:54,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-11-20 11:26:54,360 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:54,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:54,361 INFO L85 PathProgramCache]: Analyzing trace with hash 196111776, now seen corresponding path program 93 times [2022-11-20 11:26:54,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:54,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558838858] [2022-11-20 11:26:54,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:54,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:26:54,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:54,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558838858] [2022-11-20 11:26:54,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558838858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:54,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:54,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:26:54,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742508009] [2022-11-20 11:26:54,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:54,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:26:54,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:54,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:26:54,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:26:54,902 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:26:54,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 582 transitions, 9124 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:54,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:54,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:26:54,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:57,206 INFO L130 PetriNetUnfolder]: 401/1315 cut-off events. [2022-11-20 11:26:57,206 INFO L131 PetriNetUnfolder]: For 30550/30550 co-relation queries the response was YES. [2022-11-20 11:26:57,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11064 conditions, 1315 events. 401/1315 cut-off events. For 30550/30550 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 8832 event pairs, 40 based on Foata normal form. 1/1314 useless extension candidates. Maximal degree in co-relation 10859. Up to 790 conditions per place. [2022-11-20 11:26:57,234 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 359 selfloop transitions, 193 changer transitions 27/618 dead transitions. [2022-11-20 11:26:57,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 618 transitions, 10720 flow [2022-11-20 11:26:57,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-20 11:26:57,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-20 11:26:57,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2264 transitions. [2022-11-20 11:26:57,237 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5601187530925285 [2022-11-20 11:26:57,237 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2264 transitions. [2022-11-20 11:26:57,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2264 transitions. [2022-11-20 11:26:57,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:57,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2264 transitions. [2022-11-20 11:26:57,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 52.651162790697676) internal successors, (2264), 43 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:57,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:57,244 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:57,244 INFO L175 Difference]: Start difference. First operand has 591 places, 582 transitions, 9124 flow. Second operand 43 states and 2264 transitions. [2022-11-20 11:26:57,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 618 transitions, 10720 flow [2022-11-20 11:26:57,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 618 transitions, 10248 flow, removed 127 selfloop flow, removed 34 redundant places. [2022-11-20 11:26:57,568 INFO L231 Difference]: Finished difference. Result has 600 places, 574 transitions, 9102 flow [2022-11-20 11:26:57,569 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8684, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=9102, PETRI_PLACES=600, PETRI_TRANSITIONS=574} [2022-11-20 11:26:57,569 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 512 predicate places. [2022-11-20 11:26:57,569 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 574 transitions, 9102 flow [2022-11-20 11:26:57,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:57,570 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:57,570 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:26:57,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-11-20 11:26:57,570 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:57,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:57,571 INFO L85 PathProgramCache]: Analyzing trace with hash 984579434, now seen corresponding path program 94 times [2022-11-20 11:26:57,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:57,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582827308] [2022-11-20 11:26:57,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:57,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:26:58,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:58,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582827308] [2022-11-20 11:26:58,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582827308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:58,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:58,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:26:58,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209654091] [2022-11-20 11:26:58,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:58,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:26:58,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:58,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:26:58,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:26:58,079 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:26:58,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 574 transitions, 9102 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:58,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:58,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:26:58,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:00,268 INFO L130 PetriNetUnfolder]: 414/1351 cut-off events. [2022-11-20 11:27:00,268 INFO L131 PetriNetUnfolder]: For 31190/31190 co-relation queries the response was YES. [2022-11-20 11:27:00,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11452 conditions, 1351 events. 414/1351 cut-off events. For 31190/31190 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9089 event pairs, 42 based on Foata normal form. 1/1350 useless extension candidates. Maximal degree in co-relation 11244. Up to 830 conditions per place. [2022-11-20 11:27:00,294 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 406 selfloop transitions, 187 changer transitions 26/658 dead transitions. [2022-11-20 11:27:00,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 658 transitions, 11643 flow [2022-11-20 11:27:00,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 11:27:00,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-20 11:27:00,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2161 transitions. [2022-11-20 11:27:00,297 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5607161390762844 [2022-11-20 11:27:00,297 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2161 transitions. [2022-11-20 11:27:00,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2161 transitions. [2022-11-20 11:27:00,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:00,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2161 transitions. [2022-11-20 11:27:00,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.707317073170735) internal successors, (2161), 41 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:00,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:00,303 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:00,304 INFO L175 Difference]: Start difference. First operand has 600 places, 574 transitions, 9102 flow. Second operand 41 states and 2161 transitions. [2022-11-20 11:27:00,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 658 transitions, 11643 flow [2022-11-20 11:27:00,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 658 transitions, 11124 flow, removed 18 selfloop flow, removed 43 redundant places. [2022-11-20 11:27:00,651 INFO L231 Difference]: Finished difference. Result has 595 places, 607 transitions, 9690 flow [2022-11-20 11:27:00,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8619, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=9690, PETRI_PLACES=595, PETRI_TRANSITIONS=607} [2022-11-20 11:27:00,652 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 507 predicate places. [2022-11-20 11:27:00,652 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 607 transitions, 9690 flow [2022-11-20 11:27:00,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:00,652 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:00,653 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:00,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-11-20 11:27:00,653 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:27:00,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:00,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2093638478, now seen corresponding path program 95 times [2022-11-20 11:27:00,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:00,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155539615] [2022-11-20 11:27:00,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:00,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:01,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:01,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:01,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155539615] [2022-11-20 11:27:01,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155539615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:01,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:01,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:27:01,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760605497] [2022-11-20 11:27:01,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:01,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:27:01,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:01,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:27:01,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:27:01,222 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:27:01,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 607 transitions, 9690 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:01,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:01,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:27:01,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:03,404 INFO L130 PetriNetUnfolder]: 406/1333 cut-off events. [2022-11-20 11:27:03,405 INFO L131 PetriNetUnfolder]: For 31788/31788 co-relation queries the response was YES. [2022-11-20 11:27:03,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11324 conditions, 1333 events. 406/1333 cut-off events. For 31788/31788 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8956 event pairs, 51 based on Foata normal form. 1/1332 useless extension candidates. Maximal degree in co-relation 11116. Up to 927 conditions per place. [2022-11-20 11:27:03,430 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 474 selfloop transitions, 106 changer transitions 20/639 dead transitions. [2022-11-20 11:27:03,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 639 transitions, 11196 flow [2022-11-20 11:27:03,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:27:03,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:27:03,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1946 transitions. [2022-11-20 11:27:03,432 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5595169637722829 [2022-11-20 11:27:03,432 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1946 transitions. [2022-11-20 11:27:03,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1946 transitions. [2022-11-20 11:27:03,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:03,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1946 transitions. [2022-11-20 11:27:03,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.5945945945946) internal successors, (1946), 37 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:03,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:03,436 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:03,436 INFO L175 Difference]: Start difference. First operand has 595 places, 607 transitions, 9690 flow. Second operand 37 states and 1946 transitions. [2022-11-20 11:27:03,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 639 transitions, 11196 flow [2022-11-20 11:27:03,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 639 transitions, 10878 flow, removed 86 selfloop flow, removed 30 redundant places. [2022-11-20 11:27:03,791 INFO L231 Difference]: Finished difference. Result has 604 places, 606 transitions, 9596 flow [2022-11-20 11:27:03,792 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9385, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9596, PETRI_PLACES=604, PETRI_TRANSITIONS=606} [2022-11-20 11:27:03,792 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 516 predicate places. [2022-11-20 11:27:03,792 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 606 transitions, 9596 flow [2022-11-20 11:27:03,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:03,793 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:03,793 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:03,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-11-20 11:27:03,793 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:27:03,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:03,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1715818286, now seen corresponding path program 96 times [2022-11-20 11:27:03,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:03,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409389753] [2022-11-20 11:27:03,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:03,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:04,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:04,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:04,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409389753] [2022-11-20 11:27:04,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409389753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:04,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:04,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:27:04,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536465409] [2022-11-20 11:27:04,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:04,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:27:04,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:04,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:27:04,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:27:04,317 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:27:04,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 606 transitions, 9596 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:04,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:04,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:27:04,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:06,489 INFO L130 PetriNetUnfolder]: 402/1327 cut-off events. [2022-11-20 11:27:06,490 INFO L131 PetriNetUnfolder]: For 29276/29276 co-relation queries the response was YES. [2022-11-20 11:27:06,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11164 conditions, 1327 events. 402/1327 cut-off events. For 29276/29276 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 8926 event pairs, 50 based on Foata normal form. 1/1326 useless extension candidates. Maximal degree in co-relation 10951. Up to 932 conditions per place. [2022-11-20 11:27:06,516 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 478 selfloop transitions, 96 changer transitions 18/631 dead transitions. [2022-11-20 11:27:06,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 631 transitions, 10990 flow [2022-11-20 11:27:06,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:27:06,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 11:27:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1893 transitions. [2022-11-20 11:27:06,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5593971631205674 [2022-11-20 11:27:06,519 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1893 transitions. [2022-11-20 11:27:06,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1893 transitions. [2022-11-20 11:27:06,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:06,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1893 transitions. [2022-11-20 11:27:06,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.583333333333336) internal successors, (1893), 36 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:06,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:06,523 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:06,523 INFO L175 Difference]: Start difference. First operand has 604 places, 606 transitions, 9596 flow. Second operand 36 states and 1893 transitions. [2022-11-20 11:27:06,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 631 transitions, 10990 flow [2022-11-20 11:27:06,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 631 transitions, 10715 flow, removed 32 selfloop flow, removed 36 redundant places. [2022-11-20 11:27:06,929 INFO L231 Difference]: Finished difference. Result has 605 places, 603 transitions, 9520 flow [2022-11-20 11:27:06,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9337, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9520, PETRI_PLACES=605, PETRI_TRANSITIONS=603} [2022-11-20 11:27:06,930 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 517 predicate places. [2022-11-20 11:27:06,930 INFO L495 AbstractCegarLoop]: Abstraction has has 605 places, 603 transitions, 9520 flow [2022-11-20 11:27:06,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:06,930 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:06,930 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:06,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-11-20 11:27:06,931 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:27:06,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:06,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1752975368, now seen corresponding path program 97 times [2022-11-20 11:27:06,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:06,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815987083] [2022-11-20 11:27:06,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:06,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:07,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:07,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:07,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815987083] [2022-11-20 11:27:07,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815987083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:07,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:07,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:27:07,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644176939] [2022-11-20 11:27:07,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:07,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:27:07,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:07,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:27:07,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:27:07,471 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:27:07,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 603 transitions, 9520 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:07,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:07,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:27:07,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:09,552 INFO L130 PetriNetUnfolder]: 400/1329 cut-off events. [2022-11-20 11:27:09,552 INFO L131 PetriNetUnfolder]: For 29544/29544 co-relation queries the response was YES. [2022-11-20 11:27:09,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11179 conditions, 1329 events. 400/1329 cut-off events. For 29544/29544 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 8946 event pairs, 40 based on Foata normal form. 1/1328 useless extension candidates. Maximal degree in co-relation 10965. Up to 951 conditions per place. [2022-11-20 11:27:09,577 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 487 selfloop transitions, 89 changer transitions 17/632 dead transitions. [2022-11-20 11:27:09,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 632 transitions, 11018 flow [2022-11-20 11:27:09,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 11:27:09,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 11:27:09,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1991 transitions. [2022-11-20 11:27:09,580 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5573908174692049 [2022-11-20 11:27:09,580 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1991 transitions. [2022-11-20 11:27:09,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1991 transitions. [2022-11-20 11:27:09,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:09,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1991 transitions. [2022-11-20 11:27:09,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.39473684210526) internal successors, (1991), 38 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:09,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:09,584 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:09,584 INFO L175 Difference]: Start difference. First operand has 605 places, 603 transitions, 9520 flow. Second operand 38 states and 1991 transitions. [2022-11-20 11:27:09,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 632 transitions, 11018 flow [2022-11-20 11:27:09,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 632 transitions, 10775 flow, removed 25 selfloop flow, removed 35 redundant places. [2022-11-20 11:27:09,909 INFO L231 Difference]: Finished difference. Result has 608 places, 605 transitions, 9575 flow [2022-11-20 11:27:09,909 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9301, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9575, PETRI_PLACES=608, PETRI_TRANSITIONS=605} [2022-11-20 11:27:09,910 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 520 predicate places. [2022-11-20 11:27:09,910 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 605 transitions, 9575 flow [2022-11-20 11:27:09,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:09,910 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:09,910 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:09,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-11-20 11:27:09,910 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:27:09,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:09,911 INFO L85 PathProgramCache]: Analyzing trace with hash -481131398, now seen corresponding path program 98 times [2022-11-20 11:27:09,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:09,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612096119] [2022-11-20 11:27:09,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:09,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:10,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:10,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:10,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612096119] [2022-11-20 11:27:10,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612096119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:10,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:10,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:27:10,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196564082] [2022-11-20 11:27:10,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:10,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:27:10,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:10,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:27:10,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:27:10,454 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:27:10,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 605 transitions, 9575 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:10,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:10,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:27:10,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:13,041 INFO L130 PetriNetUnfolder]: 400/1336 cut-off events. [2022-11-20 11:27:13,041 INFO L131 PetriNetUnfolder]: For 31105/31105 co-relation queries the response was YES. [2022-11-20 11:27:13,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11298 conditions, 1336 events. 400/1336 cut-off events. For 31105/31105 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9058 event pairs, 38 based on Foata normal form. 1/1335 useless extension candidates. Maximal degree in co-relation 11084. Up to 777 conditions per place. [2022-11-20 11:27:13,069 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 364 selfloop transitions, 225 changer transitions 20/648 dead transitions. [2022-11-20 11:27:13,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 648 transitions, 11594 flow [2022-11-20 11:27:13,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-20 11:27:13,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-20 11:27:13,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 2515 transitions. [2022-11-20 11:27:13,072 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5574024822695035 [2022-11-20 11:27:13,072 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 2515 transitions. [2022-11-20 11:27:13,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 2515 transitions. [2022-11-20 11:27:13,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:13,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 2515 transitions. [2022-11-20 11:27:13,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 52.395833333333336) internal successors, (2515), 48 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:13,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 94.0) internal successors, (4606), 49 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:13,077 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 94.0) internal successors, (4606), 49 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:13,077 INFO L175 Difference]: Start difference. First operand has 608 places, 605 transitions, 9575 flow. Second operand 48 states and 2515 transitions. [2022-11-20 11:27:13,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 648 transitions, 11594 flow [2022-11-20 11:27:13,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 648 transitions, 11289 flow, removed 65 selfloop flow, removed 33 redundant places. [2022-11-20 11:27:13,438 INFO L231 Difference]: Finished difference. Result has 622 places, 611 transitions, 10034 flow [2022-11-20 11:27:13,439 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9280, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=10034, PETRI_PLACES=622, PETRI_TRANSITIONS=611} [2022-11-20 11:27:13,439 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 534 predicate places. [2022-11-20 11:27:13,439 INFO L495 AbstractCegarLoop]: Abstraction has has 622 places, 611 transitions, 10034 flow [2022-11-20 11:27:13,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:13,439 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:13,440 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:13,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-11-20 11:27:13,440 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:27:13,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:13,440 INFO L85 PathProgramCache]: Analyzing trace with hash 521647042, now seen corresponding path program 99 times [2022-11-20 11:27:13,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:13,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075032658] [2022-11-20 11:27:13,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:13,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:13,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:13,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:13,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075032658] [2022-11-20 11:27:13,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075032658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:13,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:13,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:27:13,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052253188] [2022-11-20 11:27:13,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:13,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:27:13,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:13,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:27:13,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:27:13,957 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:27:13,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 611 transitions, 10034 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:13,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:13,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:27:13,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:16,086 INFO L130 PetriNetUnfolder]: 395/1308 cut-off events. [2022-11-20 11:27:16,087 INFO L131 PetriNetUnfolder]: For 30493/30493 co-relation queries the response was YES. [2022-11-20 11:27:16,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11268 conditions, 1308 events. 395/1308 cut-off events. For 30493/30493 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8746 event pairs, 38 based on Foata normal form. 1/1307 useless extension candidates. Maximal degree in co-relation 11052. Up to 926 conditions per place. [2022-11-20 11:27:16,107 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 485 selfloop transitions, 75 changer transitions 31/630 dead transitions. [2022-11-20 11:27:16,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 630 transitions, 11302 flow [2022-11-20 11:27:16,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:27:16,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:27:16,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1788 transitions. [2022-11-20 11:27:16,109 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5594493116395495 [2022-11-20 11:27:16,110 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1788 transitions. [2022-11-20 11:27:16,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1788 transitions. [2022-11-20 11:27:16,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:16,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1788 transitions. [2022-11-20 11:27:16,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.588235294117645) internal successors, (1788), 34 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:16,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:16,113 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:16,113 INFO L175 Difference]: Start difference. First operand has 622 places, 611 transitions, 10034 flow. Second operand 34 states and 1788 transitions. [2022-11-20 11:27:16,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 630 transitions, 11302 flow [2022-11-20 11:27:16,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 630 transitions, 10921 flow, removed 75 selfloop flow, removed 41 redundant places. [2022-11-20 11:27:16,501 INFO L231 Difference]: Finished difference. Result has 613 places, 590 transitions, 9541 flow [2022-11-20 11:27:16,501 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9659, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=9541, PETRI_PLACES=613, PETRI_TRANSITIONS=590} [2022-11-20 11:27:16,502 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 525 predicate places. [2022-11-20 11:27:16,502 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 590 transitions, 9541 flow [2022-11-20 11:27:16,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:16,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:16,502 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:16,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-11-20 11:27:16,502 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:27:16,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:16,503 INFO L85 PathProgramCache]: Analyzing trace with hash -773918718, now seen corresponding path program 100 times [2022-11-20 11:27:16,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:16,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949659383] [2022-11-20 11:27:16,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:16,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:17,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:17,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:17,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949659383] [2022-11-20 11:27:17,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949659383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:17,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:17,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:27:17,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444994943] [2022-11-20 11:27:17,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:17,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:27:17,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:17,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:27:17,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:27:17,040 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:27:17,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 590 transitions, 9541 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:17,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:17,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:27:17,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:19,142 INFO L130 PetriNetUnfolder]: 394/1295 cut-off events. [2022-11-20 11:27:19,142 INFO L131 PetriNetUnfolder]: For 28442/28442 co-relation queries the response was YES. [2022-11-20 11:27:19,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11071 conditions, 1295 events. 394/1295 cut-off events. For 28442/28442 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 8579 event pairs, 52 based on Foata normal form. 1/1294 useless extension candidates. Maximal degree in co-relation 10854. Up to 901 conditions per place. [2022-11-20 11:27:19,168 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 466 selfloop transitions, 93 changer transitions 23/621 dead transitions. [2022-11-20 11:27:19,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 621 transitions, 11038 flow [2022-11-20 11:27:19,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 11:27:19,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 11:27:19,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2002 transitions. [2022-11-20 11:27:19,173 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5604703247480403 [2022-11-20 11:27:19,173 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2002 transitions. [2022-11-20 11:27:19,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2002 transitions. [2022-11-20 11:27:19,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:19,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2002 transitions. [2022-11-20 11:27:19,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.68421052631579) internal successors, (2002), 38 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:19,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:19,177 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:19,177 INFO L175 Difference]: Start difference. First operand has 613 places, 590 transitions, 9541 flow. Second operand 38 states and 2002 transitions. [2022-11-20 11:27:19,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 621 transitions, 11038 flow [2022-11-20 11:27:19,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 621 transitions, 10617 flow, removed 54 selfloop flow, removed 43 redundant places. [2022-11-20 11:27:19,536 INFO L231 Difference]: Finished difference. Result has 591 places, 587 transitions, 9385 flow [2022-11-20 11:27:19,536 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9146, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9385, PETRI_PLACES=591, PETRI_TRANSITIONS=587} [2022-11-20 11:27:19,537 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 503 predicate places. [2022-11-20 11:27:19,537 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 587 transitions, 9385 flow [2022-11-20 11:27:19,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:19,537 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:19,537 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:19,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-11-20 11:27:19,537 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:27:19,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:19,538 INFO L85 PathProgramCache]: Analyzing trace with hash 948382796, now seen corresponding path program 101 times [2022-11-20 11:27:19,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:19,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467086710] [2022-11-20 11:27:19,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:19,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:20,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:20,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467086710] [2022-11-20 11:27:20,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467086710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:20,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:20,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:27:20,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433540908] [2022-11-20 11:27:20,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:20,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:27:20,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:20,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:27:20,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:27:20,070 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:27:20,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 587 transitions, 9385 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:20,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:20,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:27:20,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:22,250 INFO L130 PetriNetUnfolder]: 392/1290 cut-off events. [2022-11-20 11:27:22,250 INFO L131 PetriNetUnfolder]: For 26969/26969 co-relation queries the response was YES. [2022-11-20 11:27:22,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10978 conditions, 1290 events. 392/1290 cut-off events. For 26969/26969 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8544 event pairs, 51 based on Foata normal form. 1/1289 useless extension candidates. Maximal degree in co-relation 10767. Up to 769 conditions per place. [2022-11-20 11:27:22,276 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 358 selfloop transitions, 216 changer transitions 23/636 dead transitions. [2022-11-20 11:27:22,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 636 transitions, 11428 flow [2022-11-20 11:27:22,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 11:27:22,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-20 11:27:22,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2159 transitions. [2022-11-20 11:27:22,279 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.560197197716658 [2022-11-20 11:27:22,279 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2159 transitions. [2022-11-20 11:27:22,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2159 transitions. [2022-11-20 11:27:22,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:22,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2159 transitions. [2022-11-20 11:27:22,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.65853658536585) internal successors, (2159), 41 states have internal predecessors, (2159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:22,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:22,286 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:22,286 INFO L175 Difference]: Start difference. First operand has 591 places, 587 transitions, 9385 flow. Second operand 41 states and 2159 transitions. [2022-11-20 11:27:22,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 636 transitions, 11428 flow [2022-11-20 11:27:22,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 636 transitions, 11109 flow, removed 53 selfloop flow, removed 35 redundant places. [2022-11-20 11:27:22,643 INFO L231 Difference]: Finished difference. Result has 594 places, 596 transitions, 9858 flow [2022-11-20 11:27:22,643 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9072, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=9858, PETRI_PLACES=594, PETRI_TRANSITIONS=596} [2022-11-20 11:27:22,644 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 506 predicate places. [2022-11-20 11:27:22,644 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 596 transitions, 9858 flow [2022-11-20 11:27:22,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:22,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:22,645 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:22,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-11-20 11:27:22,645 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:27:22,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:22,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1741176090, now seen corresponding path program 102 times [2022-11-20 11:27:22,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:22,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639852459] [2022-11-20 11:27:22,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:22,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:23,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:23,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:23,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639852459] [2022-11-20 11:27:23,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639852459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:23,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:23,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:27:23,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61807701] [2022-11-20 11:27:23,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:23,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:27:23,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:23,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:27:23,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:27:23,209 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:27:23,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 596 transitions, 9858 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:23,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:23,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:27:23,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:25,424 INFO L130 PetriNetUnfolder]: 391/1259 cut-off events. [2022-11-20 11:27:25,424 INFO L131 PetriNetUnfolder]: For 27760/27760 co-relation queries the response was YES. [2022-11-20 11:27:25,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11014 conditions, 1259 events. 391/1259 cut-off events. For 27760/27760 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8193 event pairs, 52 based on Foata normal form. 1/1258 useless extension candidates. Maximal degree in co-relation 10800. Up to 895 conditions per place. [2022-11-20 11:27:25,447 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 474 selfloop transitions, 92 changer transitions 18/623 dead transitions. [2022-11-20 11:27:25,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 623 transitions, 11353 flow [2022-11-20 11:27:25,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:27:25,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 11:27:25,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1899 transitions. [2022-11-20 11:27:25,450 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5611702127659575 [2022-11-20 11:27:25,450 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1899 transitions. [2022-11-20 11:27:25,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1899 transitions. [2022-11-20 11:27:25,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:25,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1899 transitions. [2022-11-20 11:27:25,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.75) internal successors, (1899), 36 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:25,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:25,455 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:25,455 INFO L175 Difference]: Start difference. First operand has 594 places, 596 transitions, 9858 flow. Second operand 36 states and 1899 transitions. [2022-11-20 11:27:25,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 623 transitions, 11353 flow [2022-11-20 11:27:25,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 623 transitions, 10853 flow, removed 71 selfloop flow, removed 38 redundant places. [2022-11-20 11:27:25,827 INFO L231 Difference]: Finished difference. Result has 591 places, 595 transitions, 9640 flow [2022-11-20 11:27:25,827 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9376, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9640, PETRI_PLACES=591, PETRI_TRANSITIONS=595} [2022-11-20 11:27:25,827 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 503 predicate places. [2022-11-20 11:27:25,828 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 595 transitions, 9640 flow [2022-11-20 11:27:25,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:25,828 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:25,828 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:25,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-11-20 11:27:25,829 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:27:25,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:25,829 INFO L85 PathProgramCache]: Analyzing trace with hash -470436548, now seen corresponding path program 103 times [2022-11-20 11:27:25,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:25,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598905742] [2022-11-20 11:27:25,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:25,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:26,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:26,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598905742] [2022-11-20 11:27:26,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598905742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:26,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:26,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:27:26,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591956343] [2022-11-20 11:27:26,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:26,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:27:26,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:26,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:27:26,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:27:26,476 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:27:26,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 595 transitions, 9640 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:26,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:26,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:27:26,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:29,112 INFO L130 PetriNetUnfolder]: 397/1292 cut-off events. [2022-11-20 11:27:29,112 INFO L131 PetriNetUnfolder]: For 26010/26010 co-relation queries the response was YES. [2022-11-20 11:27:29,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11068 conditions, 1292 events. 397/1292 cut-off events. For 26010/26010 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8505 event pairs, 49 based on Foata normal form. 1/1292 useless extension candidates. Maximal degree in co-relation 10857. Up to 799 conditions per place. [2022-11-20 11:27:29,136 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 409 selfloop transitions, 188 changer transitions 17/653 dead transitions. [2022-11-20 11:27:29,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 653 transitions, 11916 flow [2022-11-20 11:27:29,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-20 11:27:29,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-20 11:27:29,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 2512 transitions. [2022-11-20 11:27:29,139 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5567375886524822 [2022-11-20 11:27:29,139 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 2512 transitions. [2022-11-20 11:27:29,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 2512 transitions. [2022-11-20 11:27:29,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:29,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 2512 transitions. [2022-11-20 11:27:29,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 52.333333333333336) internal successors, (2512), 48 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:29,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 94.0) internal successors, (4606), 49 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:29,144 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 94.0) internal successors, (4606), 49 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:29,144 INFO L175 Difference]: Start difference. First operand has 591 places, 595 transitions, 9640 flow. Second operand 48 states and 2512 transitions. [2022-11-20 11:27:29,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 653 transitions, 11916 flow [2022-11-20 11:27:29,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 653 transitions, 11589 flow, removed 70 selfloop flow, removed 35 redundant places. [2022-11-20 11:27:29,457 INFO L231 Difference]: Finished difference. Result has 603 places, 613 transitions, 10139 flow [2022-11-20 11:27:29,458 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9323, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=10139, PETRI_PLACES=603, PETRI_TRANSITIONS=613} [2022-11-20 11:27:29,458 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 515 predicate places. [2022-11-20 11:27:29,458 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 613 transitions, 10139 flow [2022-11-20 11:27:29,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:29,459 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:29,459 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:29,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-11-20 11:27:29,459 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:27:29,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:29,460 INFO L85 PathProgramCache]: Analyzing trace with hash 123234612, now seen corresponding path program 104 times [2022-11-20 11:27:29,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:29,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670135091] [2022-11-20 11:27:29,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:29,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:30,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:30,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:30,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670135091] [2022-11-20 11:27:30,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670135091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:30,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:30,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:27:30,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662780593] [2022-11-20 11:27:30,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:30,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:27:30,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:30,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:27:30,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:27:30,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:27:30,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 613 transitions, 10139 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:30,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:30,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:27:30,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:32,186 INFO L130 PetriNetUnfolder]: 392/1274 cut-off events. [2022-11-20 11:27:32,186 INFO L131 PetriNetUnfolder]: For 25310/25310 co-relation queries the response was YES. [2022-11-20 11:27:32,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10983 conditions, 1274 events. 392/1274 cut-off events. For 25310/25310 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8361 event pairs, 48 based on Foata normal form. 1/1274 useless extension candidates. Maximal degree in co-relation 10771. Up to 924 conditions per place. [2022-11-20 11:27:32,214 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 493 selfloop transitions, 74 changer transitions 25/631 dead transitions. [2022-11-20 11:27:32,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 631 transitions, 11422 flow [2022-11-20 11:27:32,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:27:32,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:27:32,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1835 transitions. [2022-11-20 11:27:32,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5577507598784195 [2022-11-20 11:27:32,218 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1835 transitions. [2022-11-20 11:27:32,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1835 transitions. [2022-11-20 11:27:32,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:32,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1835 transitions. [2022-11-20 11:27:32,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.42857142857143) internal successors, (1835), 35 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:32,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:32,226 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:32,226 INFO L175 Difference]: Start difference. First operand has 603 places, 613 transitions, 10139 flow. Second operand 35 states and 1835 transitions. [2022-11-20 11:27:32,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 631 transitions, 11422 flow [2022-11-20 11:27:32,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 631 transitions, 11076 flow, removed 52 selfloop flow, removed 41 redundant places. [2022-11-20 11:27:32,616 INFO L231 Difference]: Finished difference. Result has 596 places, 597 transitions, 9708 flow [2022-11-20 11:27:32,617 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9799, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=9708, PETRI_PLACES=596, PETRI_TRANSITIONS=597} [2022-11-20 11:27:32,617 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 508 predicate places. [2022-11-20 11:27:32,617 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 597 transitions, 9708 flow [2022-11-20 11:27:32,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:32,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:32,618 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:32,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-11-20 11:27:32,618 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:27:32,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:32,619 INFO L85 PathProgramCache]: Analyzing trace with hash 839897168, now seen corresponding path program 105 times [2022-11-20 11:27:32,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:32,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731159593] [2022-11-20 11:27:32,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:32,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:33,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:33,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:33,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731159593] [2022-11-20 11:27:33,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731159593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:33,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:33,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:27:33,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576795713] [2022-11-20 11:27:33,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:33,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:27:33,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:33,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:27:33,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:27:33,207 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:27:33,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 597 transitions, 9708 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:33,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:33,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:27:33,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:35,410 INFO L130 PetriNetUnfolder]: 387/1250 cut-off events. [2022-11-20 11:27:35,410 INFO L131 PetriNetUnfolder]: For 24157/24157 co-relation queries the response was YES. [2022-11-20 11:27:35,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10716 conditions, 1250 events. 387/1250 cut-off events. For 24157/24157 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8119 event pairs, 48 based on Foata normal form. 1/1250 useless extension candidates. Maximal degree in co-relation 10503. Up to 894 conditions per place. [2022-11-20 11:27:35,431 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 479 selfloop transitions, 78 changer transitions 19/615 dead transitions. [2022-11-20 11:27:35,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 615 transitions, 10954 flow [2022-11-20 11:27:35,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:27:35,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:27:35,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1790 transitions. [2022-11-20 11:27:35,434 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5600750938673341 [2022-11-20 11:27:35,434 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1790 transitions. [2022-11-20 11:27:35,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1790 transitions. [2022-11-20 11:27:35,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:35,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1790 transitions. [2022-11-20 11:27:35,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.64705882352941) internal successors, (1790), 34 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:35,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:35,438 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:35,438 INFO L175 Difference]: Start difference. First operand has 596 places, 597 transitions, 9708 flow. Second operand 34 states and 1790 transitions. [2022-11-20 11:27:35,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 615 transitions, 10954 flow [2022-11-20 11:27:35,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 615 transitions, 10626 flow, removed 23 selfloop flow, removed 41 redundant places. [2022-11-20 11:27:35,772 INFO L231 Difference]: Finished difference. Result has 569 places, 587 transitions, 9493 flow [2022-11-20 11:27:35,773 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9388, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=9493, PETRI_PLACES=569, PETRI_TRANSITIONS=587} [2022-11-20 11:27:35,773 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 481 predicate places. [2022-11-20 11:27:35,773 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 587 transitions, 9493 flow [2022-11-20 11:27:35,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:35,774 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:35,774 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:35,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-11-20 11:27:35,774 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:27:35,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:35,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1224198230, now seen corresponding path program 106 times [2022-11-20 11:27:35,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:35,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710488152] [2022-11-20 11:27:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:35,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:36,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:36,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:36,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710488152] [2022-11-20 11:27:36,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710488152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:36,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:36,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:27:36,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516201331] [2022-11-20 11:27:36,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:36,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:27:36,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:36,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:27:36,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:27:36,374 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:27:36,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 587 transitions, 9493 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:36,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:36,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:27:36,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:38,329 INFO L130 PetriNetUnfolder]: 383/1236 cut-off events. [2022-11-20 11:27:38,329 INFO L131 PetriNetUnfolder]: For 23826/23826 co-relation queries the response was YES. [2022-11-20 11:27:38,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10505 conditions, 1236 events. 383/1236 cut-off events. For 23826/23826 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7989 event pairs, 51 based on Foata normal form. 1/1235 useless extension candidates. Maximal degree in co-relation 10304. Up to 885 conditions per place. [2022-11-20 11:27:38,355 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 463 selfloop transitions, 56 changer transitions 46/604 dead transitions. [2022-11-20 11:27:38,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 604 transitions, 10711 flow [2022-11-20 11:27:38,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:27:38,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:27:38,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1688 transitions. [2022-11-20 11:27:38,358 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5611702127659575 [2022-11-20 11:27:38,358 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1688 transitions. [2022-11-20 11:27:38,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1688 transitions. [2022-11-20 11:27:38,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:38,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1688 transitions. [2022-11-20 11:27:38,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.75) internal successors, (1688), 32 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:38,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:38,362 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:38,362 INFO L175 Difference]: Start difference. First operand has 569 places, 587 transitions, 9493 flow. Second operand 32 states and 1688 transitions. [2022-11-20 11:27:38,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 604 transitions, 10711 flow [2022-11-20 11:27:38,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 604 transitions, 10484 flow, removed 12 selfloop flow, removed 34 redundant places. [2022-11-20 11:27:38,698 INFO L231 Difference]: Finished difference. Result has 555 places, 549 transitions, 8980 flow [2022-11-20 11:27:38,698 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9274, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=8980, PETRI_PLACES=555, PETRI_TRANSITIONS=549} [2022-11-20 11:27:38,698 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 467 predicate places. [2022-11-20 11:27:38,698 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 549 transitions, 8980 flow [2022-11-20 11:27:38,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:38,699 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:38,699 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:38,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-11-20 11:27:38,699 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:27:38,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:38,700 INFO L85 PathProgramCache]: Analyzing trace with hash -922201066, now seen corresponding path program 107 times [2022-11-20 11:27:38,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:38,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024021149] [2022-11-20 11:27:38,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:38,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:39,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:39,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024021149] [2022-11-20 11:27:39,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024021149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:39,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:39,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:27:39,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004965231] [2022-11-20 11:27:39,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:39,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:27:39,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:39,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:27:39,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:27:39,256 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:27:39,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 549 transitions, 8980 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:39,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:39,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:27:39,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:41,321 INFO L130 PetriNetUnfolder]: 374/1205 cut-off events. [2022-11-20 11:27:41,321 INFO L131 PetriNetUnfolder]: For 23855/23855 co-relation queries the response was YES. [2022-11-20 11:27:41,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10212 conditions, 1205 events. 374/1205 cut-off events. For 23855/23855 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7741 event pairs, 51 based on Foata normal form. 1/1204 useless extension candidates. Maximal degree in co-relation 10015. Up to 795 conditions per place. [2022-11-20 11:27:41,347 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 394 selfloop transitions, 126 changer transitions 26/585 dead transitions. [2022-11-20 11:27:41,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 585 transitions, 10515 flow [2022-11-20 11:27:41,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:27:41,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:27:41,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1801 transitions. [2022-11-20 11:27:41,350 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5635168961201502 [2022-11-20 11:27:41,350 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1801 transitions. [2022-11-20 11:27:41,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1801 transitions. [2022-11-20 11:27:41,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:41,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1801 transitions. [2022-11-20 11:27:41,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.970588235294116) internal successors, (1801), 34 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:41,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:41,354 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:41,354 INFO L175 Difference]: Start difference. First operand has 555 places, 549 transitions, 8980 flow. Second operand 34 states and 1801 transitions. [2022-11-20 11:27:41,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 585 transitions, 10515 flow [2022-11-20 11:27:41,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 585 transitions, 9960 flow, removed 70 selfloop flow, removed 45 redundant places. [2022-11-20 11:27:41,679 INFO L231 Difference]: Finished difference. Result has 512 places, 543 transitions, 8651 flow [2022-11-20 11:27:41,679 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8473, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=8651, PETRI_PLACES=512, PETRI_TRANSITIONS=543} [2022-11-20 11:27:41,679 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 424 predicate places. [2022-11-20 11:27:41,680 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 543 transitions, 8651 flow [2022-11-20 11:27:41,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:41,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:41,680 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:41,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-11-20 11:27:41,681 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:27:41,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:41,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1691880736, now seen corresponding path program 108 times [2022-11-20 11:27:41,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:41,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643290786] [2022-11-20 11:27:41,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:41,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:42,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:42,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:42,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643290786] [2022-11-20 11:27:42,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643290786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:42,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:42,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:27:42,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774042531] [2022-11-20 11:27:42,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:42,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:27:42,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:42,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:27:42,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:27:42,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:27:42,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 543 transitions, 8651 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:42,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:42,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:27:42,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:44,395 INFO L130 PetriNetUnfolder]: 367/1179 cut-off events. [2022-11-20 11:27:44,395 INFO L131 PetriNetUnfolder]: For 18315/18315 co-relation queries the response was YES. [2022-11-20 11:27:44,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9432 conditions, 1179 events. 367/1179 cut-off events. For 18315/18315 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7500 event pairs, 52 based on Foata normal form. 1/1178 useless extension candidates. Maximal degree in co-relation 9253. Up to 829 conditions per place. [2022-11-20 11:27:44,418 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 422 selfloop transitions, 77 changer transitions 27/565 dead transitions. [2022-11-20 11:27:44,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 565 transitions, 9832 flow [2022-11-20 11:27:44,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:27:44,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:27:44,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1686 transitions. [2022-11-20 11:27:44,420 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5605053191489362 [2022-11-20 11:27:44,421 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1686 transitions. [2022-11-20 11:27:44,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1686 transitions. [2022-11-20 11:27:44,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:44,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1686 transitions. [2022-11-20 11:27:44,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.6875) internal successors, (1686), 32 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:44,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:44,424 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:44,424 INFO L175 Difference]: Start difference. First operand has 512 places, 543 transitions, 8651 flow. Second operand 32 states and 1686 transitions. [2022-11-20 11:27:44,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 565 transitions, 9832 flow [2022-11-20 11:27:44,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 565 transitions, 9423 flow, removed 89 selfloop flow, removed 31 redundant places. [2022-11-20 11:27:44,718 INFO L231 Difference]: Finished difference. Result has 511 places, 526 transitions, 7946 flow [2022-11-20 11:27:44,719 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8248, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=7946, PETRI_PLACES=511, PETRI_TRANSITIONS=526} [2022-11-20 11:27:44,719 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 423 predicate places. [2022-11-20 11:27:44,719 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 526 transitions, 7946 flow [2022-11-20 11:27:44,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:44,719 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:44,719 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:44,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-11-20 11:27:44,720 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:27:44,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:44,720 INFO L85 PathProgramCache]: Analyzing trace with hash 237786636, now seen corresponding path program 109 times [2022-11-20 11:27:44,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:44,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058032305] [2022-11-20 11:27:44,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:44,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:45,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:45,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:45,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058032305] [2022-11-20 11:27:45,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058032305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:45,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:45,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 11:27:45,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88814864] [2022-11-20 11:27:45,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:45,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:27:45,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:45,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:27:45,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:27:45,437 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:27:45,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 526 transitions, 7946 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:45,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:45,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:27:45,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:48,212 INFO L130 PetriNetUnfolder]: 366/1173 cut-off events. [2022-11-20 11:27:48,212 INFO L131 PetriNetUnfolder]: For 18259/18259 co-relation queries the response was YES. [2022-11-20 11:27:48,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9271 conditions, 1173 events. 366/1173 cut-off events. For 18259/18259 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7435 event pairs, 54 based on Foata normal form. 1/1172 useless extension candidates. Maximal degree in co-relation 9093. Up to 719 conditions per place. [2022-11-20 11:27:48,236 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 345 selfloop transitions, 166 changer transitions 17/567 dead transitions. [2022-11-20 11:27:48,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 567 transitions, 9723 flow [2022-11-20 11:27:48,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 11:27:48,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-20 11:27:48,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2101 transitions. [2022-11-20 11:27:48,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5587765957446809 [2022-11-20 11:27:48,239 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2101 transitions. [2022-11-20 11:27:48,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2101 transitions. [2022-11-20 11:27:48,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:48,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2101 transitions. [2022-11-20 11:27:48,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 52.525) internal successors, (2101), 40 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:48,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:48,244 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:48,244 INFO L175 Difference]: Start difference. First operand has 511 places, 526 transitions, 7946 flow. Second operand 40 states and 2101 transitions. [2022-11-20 11:27:48,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 567 transitions, 9723 flow [2022-11-20 11:27:48,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 567 transitions, 9318 flow, removed 73 selfloop flow, removed 36 redundant places. [2022-11-20 11:27:48,513 INFO L231 Difference]: Finished difference. Result has 505 places, 528 transitions, 8085 flow [2022-11-20 11:27:48,513 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7598, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=8085, PETRI_PLACES=505, PETRI_TRANSITIONS=528} [2022-11-20 11:27:48,513 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 417 predicate places. [2022-11-20 11:27:48,513 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 528 transitions, 8085 flow [2022-11-20 11:27:48,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:48,514 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:48,514 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:48,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-11-20 11:27:48,514 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:27:48,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:48,514 INFO L85 PathProgramCache]: Analyzing trace with hash 942989110, now seen corresponding path program 110 times [2022-11-20 11:27:48,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:48,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353685064] [2022-11-20 11:27:48,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:48,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:49,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:49,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:49,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353685064] [2022-11-20 11:27:49,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353685064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:49,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:49,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:27:49,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339037081] [2022-11-20 11:27:49,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:49,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:27:49,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:49,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:27:49,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:27:49,122 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:27:49,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 528 transitions, 8085 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:49,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:49,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:27:49,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:51,640 INFO L130 PetriNetUnfolder]: 365/1164 cut-off events. [2022-11-20 11:27:51,640 INFO L131 PetriNetUnfolder]: For 17402/17402 co-relation queries the response was YES. [2022-11-20 11:27:51,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9171 conditions, 1164 events. 365/1164 cut-off events. For 17402/17402 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7324 event pairs, 42 based on Foata normal form. 1/1162 useless extension candidates. Maximal degree in co-relation 8998. Up to 785 conditions per place. [2022-11-20 11:27:51,660 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 384 selfloop transitions, 116 changer transitions 20/559 dead transitions. [2022-11-20 11:27:51,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 559 transitions, 9461 flow [2022-11-20 11:27:51,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 11:27:51,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-20 11:27:51,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2044 transitions. [2022-11-20 11:27:51,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5575559192580469 [2022-11-20 11:27:51,664 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2044 transitions. [2022-11-20 11:27:51,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2044 transitions. [2022-11-20 11:27:51,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:51,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2044 transitions. [2022-11-20 11:27:51,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.41025641025641) internal successors, (2044), 39 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:51,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:51,668 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:51,668 INFO L175 Difference]: Start difference. First operand has 505 places, 528 transitions, 8085 flow. Second operand 39 states and 2044 transitions. [2022-11-20 11:27:51,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 559 transitions, 9461 flow [2022-11-20 11:27:51,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 559 transitions, 9157 flow, removed 45 selfloop flow, removed 34 redundant places. [2022-11-20 11:27:51,927 INFO L231 Difference]: Finished difference. Result has 512 places, 527 transitions, 8057 flow [2022-11-20 11:27:51,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7796, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=8057, PETRI_PLACES=512, PETRI_TRANSITIONS=527} [2022-11-20 11:27:51,928 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 424 predicate places. [2022-11-20 11:27:51,928 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 527 transitions, 8057 flow [2022-11-20 11:27:51,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:51,928 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:51,929 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:51,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-11-20 11:27:51,929 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:27:51,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:51,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1264771988, now seen corresponding path program 111 times [2022-11-20 11:27:51,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:51,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039994593] [2022-11-20 11:27:51,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:51,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:52,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:52,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:52,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039994593] [2022-11-20 11:27:52,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039994593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:52,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:52,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:27:52,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038549152] [2022-11-20 11:27:52,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:52,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:27:52,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:52,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:27:52,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:27:52,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:27:52,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 527 transitions, 8057 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:52,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:52,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:27:52,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:54,494 INFO L130 PetriNetUnfolder]: 359/1154 cut-off events. [2022-11-20 11:27:54,494 INFO L131 PetriNetUnfolder]: For 16421/16421 co-relation queries the response was YES. [2022-11-20 11:27:54,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9023 conditions, 1154 events. 359/1154 cut-off events. For 16421/16421 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7242 event pairs, 43 based on Foata normal form. 1/1153 useless extension candidates. Maximal degree in co-relation 8847. Up to 777 conditions per place. [2022-11-20 11:27:54,516 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 385 selfloop transitions, 88 changer transitions 40/552 dead transitions. [2022-11-20 11:27:54,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 552 transitions, 9243 flow [2022-11-20 11:27:54,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:27:54,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:27:54,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1694 transitions. [2022-11-20 11:27:54,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5631648936170213 [2022-11-20 11:27:54,519 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1694 transitions. [2022-11-20 11:27:54,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1694 transitions. [2022-11-20 11:27:54,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:54,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1694 transitions. [2022-11-20 11:27:54,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.9375) internal successors, (1694), 32 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:54,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:54,523 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:54,523 INFO L175 Difference]: Start difference. First operand has 512 places, 527 transitions, 8057 flow. Second operand 32 states and 1694 transitions. [2022-11-20 11:27:54,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 552 transitions, 9243 flow [2022-11-20 11:27:54,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 552 transitions, 8958 flow, removed 26 selfloop flow, removed 37 redundant places. [2022-11-20 11:27:54,803 INFO L231 Difference]: Finished difference. Result has 504 places, 500 transitions, 7430 flow [2022-11-20 11:27:54,803 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7780, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=7430, PETRI_PLACES=504, PETRI_TRANSITIONS=500} [2022-11-20 11:27:54,804 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 416 predicate places. [2022-11-20 11:27:54,804 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 500 transitions, 7430 flow [2022-11-20 11:27:54,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:54,804 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:54,805 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:54,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-11-20 11:27:54,805 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:27:54,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:54,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1759191800, now seen corresponding path program 112 times [2022-11-20 11:27:54,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:54,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443707897] [2022-11-20 11:27:54,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:54,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:55,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:55,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:55,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443707897] [2022-11-20 11:27:55,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443707897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:55,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:55,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:27:55,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628765701] [2022-11-20 11:27:55,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:55,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:27:55,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:55,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:27:55,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:27:55,471 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:27:55,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 500 transitions, 7430 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:55,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:55,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:27:55,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:57,722 INFO L130 PetriNetUnfolder]: 350/1108 cut-off events. [2022-11-20 11:27:57,722 INFO L131 PetriNetUnfolder]: For 15494/15494 co-relation queries the response was YES. [2022-11-20 11:27:57,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8635 conditions, 1108 events. 350/1108 cut-off events. For 15494/15494 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6812 event pairs, 54 based on Foata normal form. 1/1107 useless extension candidates. Maximal degree in co-relation 8462. Up to 779 conditions per place. [2022-11-20 11:27:57,743 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 389 selfloop transitions, 84 changer transitions 17/529 dead transitions. [2022-11-20 11:27:57,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 529 transitions, 8709 flow [2022-11-20 11:27:57,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:27:57,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:27:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1941 transitions. [2022-11-20 11:27:57,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5580793559516963 [2022-11-20 11:27:57,746 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1941 transitions. [2022-11-20 11:27:57,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1941 transitions. [2022-11-20 11:27:57,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:57,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1941 transitions. [2022-11-20 11:27:57,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.45945945945946) internal successors, (1941), 37 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:57,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:57,750 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:57,751 INFO L175 Difference]: Start difference. First operand has 504 places, 500 transitions, 7430 flow. Second operand 37 states and 1941 transitions. [2022-11-20 11:27:57,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 529 transitions, 8709 flow [2022-11-20 11:27:57,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 529 transitions, 8275 flow, removed 69 selfloop flow, removed 38 redundant places. [2022-11-20 11:27:57,994 INFO L231 Difference]: Finished difference. Result has 496 places, 499 transitions, 7231 flow [2022-11-20 11:27:57,994 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7024, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7231, PETRI_PLACES=496, PETRI_TRANSITIONS=499} [2022-11-20 11:27:57,995 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 408 predicate places. [2022-11-20 11:27:57,995 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 499 transitions, 7231 flow [2022-11-20 11:27:57,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:57,995 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:57,995 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:57,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-11-20 11:27:57,995 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:27:57,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:57,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1332535644, now seen corresponding path program 113 times [2022-11-20 11:27:57,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:57,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559616942] [2022-11-20 11:27:57,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:57,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:58,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:58,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:58,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559616942] [2022-11-20 11:27:58,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559616942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:58,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:58,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:27:58,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155712590] [2022-11-20 11:27:58,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:58,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:27:58,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:58,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:27:58,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:27:58,638 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:27:58,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 499 transitions, 7231 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:58,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:58,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:27:58,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:01,307 INFO L130 PetriNetUnfolder]: 356/1142 cut-off events. [2022-11-20 11:28:01,307 INFO L131 PetriNetUnfolder]: For 15657/15657 co-relation queries the response was YES. [2022-11-20 11:28:01,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8695 conditions, 1142 events. 356/1142 cut-off events. For 15657/15657 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7150 event pairs, 45 based on Foata normal form. 1/1141 useless extension candidates. Maximal degree in co-relation 8528. Up to 663 conditions per place. [2022-11-20 11:28:01,328 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 298 selfloop transitions, 184 changer transitions 21/542 dead transitions. [2022-11-20 11:28:01,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 542 transitions, 8827 flow [2022-11-20 11:28:01,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-20 11:28:01,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-20 11:28:01,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2208 transitions. [2022-11-20 11:28:01,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5592705167173252 [2022-11-20 11:28:01,331 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2208 transitions. [2022-11-20 11:28:01,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2208 transitions. [2022-11-20 11:28:01,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:01,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2208 transitions. [2022-11-20 11:28:01,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 52.57142857142857) internal successors, (2208), 42 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:01,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:01,336 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:01,336 INFO L175 Difference]: Start difference. First operand has 496 places, 499 transitions, 7231 flow. Second operand 42 states and 2208 transitions. [2022-11-20 11:28:01,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 542 transitions, 8827 flow [2022-11-20 11:28:01,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 542 transitions, 8567 flow, removed 49 selfloop flow, removed 35 redundant places. [2022-11-20 11:28:01,550 INFO L231 Difference]: Finished difference. Result has 502 places, 505 transitions, 7544 flow [2022-11-20 11:28:01,551 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6986, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=7544, PETRI_PLACES=502, PETRI_TRANSITIONS=505} [2022-11-20 11:28:01,551 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 414 predicate places. [2022-11-20 11:28:01,551 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 505 transitions, 7544 flow [2022-11-20 11:28:01,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:01,552 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:01,552 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:28:01,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-11-20 11:28:01,552 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:28:01,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:01,552 INFO L85 PathProgramCache]: Analyzing trace with hash 983019100, now seen corresponding path program 114 times [2022-11-20 11:28:01,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:01,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431960756] [2022-11-20 11:28:01,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:01,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:02,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:02,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431960756] [2022-11-20 11:28:02,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431960756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:02,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:02,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:28:02,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657374] [2022-11-20 11:28:02,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:02,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:28:02,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:02,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:28:02,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:28:02,162 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:28:02,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 505 transitions, 7544 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:02,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:02,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:28:02,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:04,159 INFO L130 PetriNetUnfolder]: 349/1112 cut-off events. [2022-11-20 11:28:04,159 INFO L131 PetriNetUnfolder]: For 16093/16093 co-relation queries the response was YES. [2022-11-20 11:28:04,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8666 conditions, 1112 events. 349/1112 cut-off events. For 16093/16093 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6856 event pairs, 52 based on Foata normal form. 1/1112 useless extension candidates. Maximal degree in co-relation 8497. Up to 775 conditions per place. [2022-11-20 11:28:04,180 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 385 selfloop transitions, 69 changer transitions 34/527 dead transitions. [2022-11-20 11:28:04,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 527 transitions, 8654 flow [2022-11-20 11:28:04,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:28:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:28:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1686 transitions. [2022-11-20 11:28:04,183 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5605053191489362 [2022-11-20 11:28:04,183 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1686 transitions. [2022-11-20 11:28:04,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1686 transitions. [2022-11-20 11:28:04,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:04,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1686 transitions. [2022-11-20 11:28:04,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.6875) internal successors, (1686), 32 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:04,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:04,186 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:04,187 INFO L175 Difference]: Start difference. First operand has 502 places, 505 transitions, 7544 flow. Second operand 32 states and 1686 transitions. [2022-11-20 11:28:04,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 527 transitions, 8654 flow [2022-11-20 11:28:04,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 527 transitions, 8308 flow, removed 36 selfloop flow, removed 38 redundant places. [2022-11-20 11:28:04,482 INFO L231 Difference]: Finished difference. Result has 494 places, 484 transitions, 6947 flow [2022-11-20 11:28:04,483 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7208, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=6947, PETRI_PLACES=494, PETRI_TRANSITIONS=484} [2022-11-20 11:28:04,483 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 406 predicate places. [2022-11-20 11:28:04,483 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 484 transitions, 6947 flow [2022-11-20 11:28:04,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:04,484 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:04,484 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:28:04,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-11-20 11:28:04,484 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:28:04,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:04,485 INFO L85 PathProgramCache]: Analyzing trace with hash -233641742, now seen corresponding path program 115 times [2022-11-20 11:28:04,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:04,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007575982] [2022-11-20 11:28:04,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:04,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:05,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:05,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:05,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007575982] [2022-11-20 11:28:05,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007575982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:05,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:05,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:28:05,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255863921] [2022-11-20 11:28:05,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:05,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:28:05,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:05,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:28:05,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:28:05,201 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:28:05,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 484 transitions, 6947 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:05,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:05,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:28:05,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:07,209 INFO L130 PetriNetUnfolder]: 342/1075 cut-off events. [2022-11-20 11:28:07,209 INFO L131 PetriNetUnfolder]: For 14370/14370 co-relation queries the response was YES. [2022-11-20 11:28:07,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8175 conditions, 1075 events. 342/1075 cut-off events. For 14370/14370 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6473 event pairs, 45 based on Foata normal form. 1/1074 useless extension candidates. Maximal degree in co-relation 8009. Up to 766 conditions per place. [2022-11-20 11:28:07,229 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 376 selfloop transitions, 55 changer transitions 31/501 dead transitions. [2022-11-20 11:28:07,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 501 transitions, 7953 flow [2022-11-20 11:28:07,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 11:28:07,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 11:28:07,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1728 transitions. [2022-11-20 11:28:07,232 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5570599613152805 [2022-11-20 11:28:07,232 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1728 transitions. [2022-11-20 11:28:07,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1728 transitions. [2022-11-20 11:28:07,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:07,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1728 transitions. [2022-11-20 11:28:07,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.36363636363637) internal successors, (1728), 33 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:07,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:07,240 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:07,240 INFO L175 Difference]: Start difference. First operand has 494 places, 484 transitions, 6947 flow. Second operand 33 states and 1728 transitions. [2022-11-20 11:28:07,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 501 transitions, 7953 flow [2022-11-20 11:28:07,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 501 transitions, 7612 flow, removed 61 selfloop flow, removed 35 redundant places. [2022-11-20 11:28:07,515 INFO L231 Difference]: Finished difference. Result has 479 places, 461 transitions, 6497 flow [2022-11-20 11:28:07,516 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6612, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=6497, PETRI_PLACES=479, PETRI_TRANSITIONS=461} [2022-11-20 11:28:07,516 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 391 predicate places. [2022-11-20 11:28:07,516 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 461 transitions, 6497 flow [2022-11-20 11:28:07,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:07,516 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:07,517 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:28:07,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-11-20 11:28:07,517 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:28:07,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:07,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1918220560, now seen corresponding path program 116 times [2022-11-20 11:28:07,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:07,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341838107] [2022-11-20 11:28:07,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:07,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:08,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:08,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:08,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341838107] [2022-11-20 11:28:08,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341838107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:08,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:08,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:28:08,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100183661] [2022-11-20 11:28:08,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:08,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:28:08,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:08,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:28:08,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:28:08,172 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:28:08,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 461 transitions, 6497 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:08,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:08,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:28:08,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:10,078 INFO L130 PetriNetUnfolder]: 340/1065 cut-off events. [2022-11-20 11:28:10,078 INFO L131 PetriNetUnfolder]: For 14016/14016 co-relation queries the response was YES. [2022-11-20 11:28:10,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7986 conditions, 1065 events. 340/1065 cut-off events. For 14016/14016 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6439 event pairs, 42 based on Foata normal form. 1/1063 useless extension candidates. Maximal degree in co-relation 7824. Up to 671 conditions per place. [2022-11-20 11:28:10,097 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 296 selfloop transitions, 142 changer transitions 23/500 dead transitions. [2022-11-20 11:28:10,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 500 transitions, 7890 flow [2022-11-20 11:28:10,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:28:10,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:28:10,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1949 transitions. [2022-11-20 11:28:10,100 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5603795284646349 [2022-11-20 11:28:10,100 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1949 transitions. [2022-11-20 11:28:10,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1949 transitions. [2022-11-20 11:28:10,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:10,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1949 transitions. [2022-11-20 11:28:10,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.67567567567568) internal successors, (1949), 37 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:10,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:10,104 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:10,104 INFO L175 Difference]: Start difference. First operand has 479 places, 461 transitions, 6497 flow. Second operand 37 states and 1949 transitions. [2022-11-20 11:28:10,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 500 transitions, 7890 flow [2022-11-20 11:28:10,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 500 transitions, 7580 flow, removed 47 selfloop flow, removed 32 redundant places. [2022-11-20 11:28:10,288 INFO L231 Difference]: Finished difference. Result has 458 places, 462 transitions, 6601 flow [2022-11-20 11:28:10,289 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6219, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6601, PETRI_PLACES=458, PETRI_TRANSITIONS=462} [2022-11-20 11:28:10,289 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 370 predicate places. [2022-11-20 11:28:10,289 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 462 transitions, 6601 flow [2022-11-20 11:28:10,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:10,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:10,290 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:28:10,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-11-20 11:28:10,290 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:28:10,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:10,291 INFO L85 PathProgramCache]: Analyzing trace with hash -128961574, now seen corresponding path program 117 times [2022-11-20 11:28:10,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:10,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510914454] [2022-11-20 11:28:10,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:10,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:10,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:10,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510914454] [2022-11-20 11:28:10,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510914454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:10,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:10,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 11:28:10,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386773201] [2022-11-20 11:28:10,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:10,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:28:10,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:10,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:28:10,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:28:10,927 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:28:10,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 462 transitions, 6601 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:10,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:10,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:28:10,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:13,307 INFO L130 PetriNetUnfolder]: 337/1060 cut-off events. [2022-11-20 11:28:13,308 INFO L131 PetriNetUnfolder]: For 13818/13818 co-relation queries the response was YES. [2022-11-20 11:28:13,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7901 conditions, 1060 events. 337/1060 cut-off events. For 13818/13818 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6374 event pairs, 41 based on Foata normal form. 1/1059 useless extension candidates. Maximal degree in co-relation 7745. Up to 716 conditions per place. [2022-11-20 11:28:13,324 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 332 selfloop transitions, 88 changer transitions 34/493 dead transitions. [2022-11-20 11:28:13,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 493 transitions, 7846 flow [2022-11-20 11:28:13,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 11:28:13,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-20 11:28:13,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2140 transitions. [2022-11-20 11:28:13,327 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5552672548002076 [2022-11-20 11:28:13,327 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2140 transitions. [2022-11-20 11:28:13,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2140 transitions. [2022-11-20 11:28:13,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:13,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2140 transitions. [2022-11-20 11:28:13,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.19512195121951) internal successors, (2140), 41 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:13,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:13,332 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:13,332 INFO L175 Difference]: Start difference. First operand has 458 places, 462 transitions, 6601 flow. Second operand 41 states and 2140 transitions. [2022-11-20 11:28:13,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 493 transitions, 7846 flow [2022-11-20 11:28:13,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 493 transitions, 7479 flow, removed 55 selfloop flow, removed 33 redundant places. [2022-11-20 11:28:13,541 INFO L231 Difference]: Finished difference. Result has 467 places, 447 transitions, 6210 flow [2022-11-20 11:28:13,541 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6251, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=6210, PETRI_PLACES=467, PETRI_TRANSITIONS=447} [2022-11-20 11:28:13,542 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 379 predicate places. [2022-11-20 11:28:13,542 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 447 transitions, 6210 flow [2022-11-20 11:28:13,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:13,542 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:13,543 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:28:13,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-11-20 11:28:13,543 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:28:13,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:13,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1648711498, now seen corresponding path program 118 times [2022-11-20 11:28:13,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:13,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834535347] [2022-11-20 11:28:13,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:13,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:14,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:14,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834535347] [2022-11-20 11:28:14,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834535347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:14,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:14,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:28:14,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064570050] [2022-11-20 11:28:14,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:14,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:28:14,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:14,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:28:14,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:28:14,172 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:28:14,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 447 transitions, 6210 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:14,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:14,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:28:14,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:16,343 INFO L130 PetriNetUnfolder]: 331/1031 cut-off events. [2022-11-20 11:28:16,343 INFO L131 PetriNetUnfolder]: For 13530/13530 co-relation queries the response was YES. [2022-11-20 11:28:16,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7686 conditions, 1031 events. 331/1031 cut-off events. For 13530/13530 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6102 event pairs, 39 based on Foata normal form. 1/1031 useless extension candidates. Maximal degree in co-relation 7527. Up to 651 conditions per place. [2022-11-20 11:28:16,360 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 278 selfloop transitions, 143 changer transitions 21/481 dead transitions. [2022-11-20 11:28:16,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 481 transitions, 7467 flow [2022-11-20 11:28:16,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 11:28:16,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-20 11:28:16,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2098 transitions. [2022-11-20 11:28:16,363 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5579787234042554 [2022-11-20 11:28:16,363 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2098 transitions. [2022-11-20 11:28:16,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2098 transitions. [2022-11-20 11:28:16,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:16,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2098 transitions. [2022-11-20 11:28:16,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 52.45) internal successors, (2098), 40 states have internal predecessors, (2098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:16,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:16,368 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:16,368 INFO L175 Difference]: Start difference. First operand has 467 places, 447 transitions, 6210 flow. Second operand 40 states and 2098 transitions. [2022-11-20 11:28:16,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 481 transitions, 7467 flow [2022-11-20 11:28:16,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 481 transitions, 7022 flow, removed 92 selfloop flow, removed 45 redundant places. [2022-11-20 11:28:16,526 INFO L231 Difference]: Finished difference. Result has 454 places, 444 transitions, 6142 flow [2022-11-20 11:28:16,526 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5785, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=6142, PETRI_PLACES=454, PETRI_TRANSITIONS=444} [2022-11-20 11:28:16,526 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 366 predicate places. [2022-11-20 11:28:16,527 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 444 transitions, 6142 flow [2022-11-20 11:28:16,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:16,527 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:16,527 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:28:16,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-11-20 11:28:16,527 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:28:16,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:16,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1211001856, now seen corresponding path program 119 times [2022-11-20 11:28:16,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:16,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331610173] [2022-11-20 11:28:16,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:16,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:17,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:17,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:17,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331610173] [2022-11-20 11:28:17,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331610173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:17,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:17,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:28:17,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726934394] [2022-11-20 11:28:17,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:17,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:28:17,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:17,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:28:17,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:28:17,111 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:28:17,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 444 transitions, 6142 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:17,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:17,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:28:17,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:19,192 INFO L130 PetriNetUnfolder]: 323/1013 cut-off events. [2022-11-20 11:28:19,192 INFO L131 PetriNetUnfolder]: For 12220/12220 co-relation queries the response was YES. [2022-11-20 11:28:19,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7446 conditions, 1013 events. 323/1013 cut-off events. For 12220/12220 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5929 event pairs, 57 based on Foata normal form. 1/1011 useless extension candidates. Maximal degree in co-relation 7292. Up to 632 conditions per place. [2022-11-20 11:28:19,207 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 275 selfloop transitions, 97 changer transitions 57/468 dead transitions. [2022-11-20 11:28:19,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 468 transitions, 7150 flow [2022-11-20 11:28:19,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:28:19,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:28:19,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1942 transitions. [2022-11-20 11:28:19,210 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5583668775158137 [2022-11-20 11:28:19,210 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1942 transitions. [2022-11-20 11:28:19,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1942 transitions. [2022-11-20 11:28:19,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:19,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1942 transitions. [2022-11-20 11:28:19,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.486486486486484) internal successors, (1942), 37 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:19,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:19,214 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:19,214 INFO L175 Difference]: Start difference. First operand has 454 places, 444 transitions, 6142 flow. Second operand 37 states and 1942 transitions. [2022-11-20 11:28:19,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 468 transitions, 7150 flow [2022-11-20 11:28:19,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 468 transitions, 6736 flow, removed 47 selfloop flow, removed 38 redundant places. [2022-11-20 11:28:19,380 INFO L231 Difference]: Finished difference. Result has 451 places, 396 transitions, 5108 flow [2022-11-20 11:28:19,380 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5737, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5108, PETRI_PLACES=451, PETRI_TRANSITIONS=396} [2022-11-20 11:28:19,381 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 363 predicate places. [2022-11-20 11:28:19,381 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 396 transitions, 5108 flow [2022-11-20 11:28:19,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:19,381 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:19,381 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:28:19,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-11-20 11:28:19,382 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:28:19,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:19,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1942169300, now seen corresponding path program 120 times [2022-11-20 11:28:19,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:19,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528988857] [2022-11-20 11:28:19,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:19,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:19,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:20,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528988857] [2022-11-20 11:28:20,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528988857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:20,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:20,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:28:20,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84097594] [2022-11-20 11:28:20,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:20,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:28:20,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:20,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:28:20,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:28:20,003 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:28:20,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 396 transitions, 5108 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:20,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:20,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:28:20,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:21,891 INFO L130 PetriNetUnfolder]: 310/964 cut-off events. [2022-11-20 11:28:21,891 INFO L131 PetriNetUnfolder]: For 11933/11933 co-relation queries the response was YES. [2022-11-20 11:28:21,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6956 conditions, 964 events. 310/964 cut-off events. For 11933/11933 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5493 event pairs, 57 based on Foata normal form. 1/963 useless extension candidates. Maximal degree in co-relation 6803. Up to 645 conditions per place. [2022-11-20 11:28:21,905 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 280 selfloop transitions, 87 changer transitions 22/428 dead transitions. [2022-11-20 11:28:21,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 428 transitions, 6240 flow [2022-11-20 11:28:21,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 11:28:21,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 11:28:21,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1746 transitions. [2022-11-20 11:28:21,907 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.562862669245648 [2022-11-20 11:28:21,908 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1746 transitions. [2022-11-20 11:28:21,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1746 transitions. [2022-11-20 11:28:21,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:21,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1746 transitions. [2022-11-20 11:28:21,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.90909090909091) internal successors, (1746), 33 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:21,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:21,911 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:21,911 INFO L175 Difference]: Start difference. First operand has 451 places, 396 transitions, 5108 flow. Second operand 33 states and 1746 transitions. [2022-11-20 11:28:21,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 428 transitions, 6240 flow [2022-11-20 11:28:22,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 428 transitions, 5724 flow, removed 103 selfloop flow, removed 46 redundant places. [2022-11-20 11:28:22,049 INFO L231 Difference]: Finished difference. Result has 423 places, 394 transitions, 4837 flow [2022-11-20 11:28:22,049 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4622, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=4837, PETRI_PLACES=423, PETRI_TRANSITIONS=394} [2022-11-20 11:28:22,049 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 335 predicate places. [2022-11-20 11:28:22,049 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 394 transitions, 4837 flow [2022-11-20 11:28:22,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:22,050 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:22,050 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:28:22,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-11-20 11:28:22,050 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:28:22,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:22,050 INFO L85 PathProgramCache]: Analyzing trace with hash -487756908, now seen corresponding path program 121 times [2022-11-20 11:28:22,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:22,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034477335] [2022-11-20 11:28:22,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:22,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:22,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:22,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:22,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034477335] [2022-11-20 11:28:22,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034477335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:22,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:22,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:28:22,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459337979] [2022-11-20 11:28:22,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:22,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:28:22,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:22,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:28:22,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:28:22,603 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:28:22,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 394 transitions, 4837 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:22,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:22,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:28:22,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:24,515 INFO L130 PetriNetUnfolder]: 301/935 cut-off events. [2022-11-20 11:28:24,515 INFO L131 PetriNetUnfolder]: For 11658/11658 co-relation queries the response was YES. [2022-11-20 11:28:24,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6605 conditions, 935 events. 301/935 cut-off events. For 11658/11658 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5223 event pairs, 41 based on Foata normal form. 1/935 useless extension candidates. Maximal degree in co-relation 6460. Up to 617 conditions per place. [2022-11-20 11:28:24,530 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 257 selfloop transitions, 71 changer transitions 51/418 dead transitions. [2022-11-20 11:28:24,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 418 transitions, 5744 flow [2022-11-20 11:28:24,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:28:24,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:28:24,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1839 transitions. [2022-11-20 11:28:24,533 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.558966565349544 [2022-11-20 11:28:24,533 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1839 transitions. [2022-11-20 11:28:24,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1839 transitions. [2022-11-20 11:28:24,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:24,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1839 transitions. [2022-11-20 11:28:24,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.542857142857144) internal successors, (1839), 35 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:24,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:24,537 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:24,537 INFO L175 Difference]: Start difference. First operand has 423 places, 394 transitions, 4837 flow. Second operand 35 states and 1839 transitions. [2022-11-20 11:28:24,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 418 transitions, 5744 flow [2022-11-20 11:28:24,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 418 transitions, 5457 flow, removed 36 selfloop flow, removed 33 redundant places. [2022-11-20 11:28:24,665 INFO L231 Difference]: Finished difference. Result has 420 places, 358 transitions, 4222 flow [2022-11-20 11:28:24,665 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4560, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4222, PETRI_PLACES=420, PETRI_TRANSITIONS=358} [2022-11-20 11:28:24,665 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 332 predicate places. [2022-11-20 11:28:24,665 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 358 transitions, 4222 flow [2022-11-20 11:28:24,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:24,666 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:24,666 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:28:24,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-11-20 11:28:24,666 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:28:24,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:24,666 INFO L85 PathProgramCache]: Analyzing trace with hash -794517584, now seen corresponding path program 122 times [2022-11-20 11:28:24,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:24,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204483788] [2022-11-20 11:28:24,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:24,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:25,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:25,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:25,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204483788] [2022-11-20 11:28:25,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204483788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:25,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:25,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 11:28:25,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594995841] [2022-11-20 11:28:25,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:25,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:28:25,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:25,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:28:25,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:28:25,431 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:28:25,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 358 transitions, 4222 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:25,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:25,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:28:25,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:27,554 INFO L130 PetriNetUnfolder]: 286/869 cut-off events. [2022-11-20 11:28:27,554 INFO L131 PetriNetUnfolder]: For 9992/9992 co-relation queries the response was YES. [2022-11-20 11:28:27,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6023 conditions, 869 events. 286/869 cut-off events. For 9992/9992 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4625 event pairs, 49 based on Foata normal form. 1/868 useless extension candidates. Maximal degree in co-relation 5882. Up to 609 conditions per place. [2022-11-20 11:28:27,569 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 251 selfloop transitions, 61 changer transitions 24/375 dead transitions. [2022-11-20 11:28:27,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 375 transitions, 4972 flow [2022-11-20 11:28:27,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:28:27,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 11:28:27,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1875 transitions. [2022-11-20 11:28:27,572 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5540780141843972 [2022-11-20 11:28:27,573 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1875 transitions. [2022-11-20 11:28:27,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1875 transitions. [2022-11-20 11:28:27,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:27,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1875 transitions. [2022-11-20 11:28:27,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.083333333333336) internal successors, (1875), 36 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:27,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:27,577 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:27,577 INFO L175 Difference]: Start difference. First operand has 420 places, 358 transitions, 4222 flow. Second operand 36 states and 1875 transitions. [2022-11-20 11:28:27,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 375 transitions, 4972 flow [2022-11-20 11:28:27,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 375 transitions, 4624 flow, removed 48 selfloop flow, removed 48 redundant places. [2022-11-20 11:28:27,696 INFO L231 Difference]: Finished difference. Result has 396 places, 342 transitions, 3914 flow [2022-11-20 11:28:27,696 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3880, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3914, PETRI_PLACES=396, PETRI_TRANSITIONS=342} [2022-11-20 11:28:27,696 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 308 predicate places. [2022-11-20 11:28:27,696 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 342 transitions, 3914 flow [2022-11-20 11:28:27,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:27,697 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:27,697 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:28:27,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-11-20 11:28:27,697 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:28:27,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:27,697 INFO L85 PathProgramCache]: Analyzing trace with hash 8290352, now seen corresponding path program 123 times [2022-11-20 11:28:27,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:27,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547970441] [2022-11-20 11:28:27,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:27,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:28,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:28,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:28,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547970441] [2022-11-20 11:28:28,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547970441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:28,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:28,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:28:28,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168240164] [2022-11-20 11:28:28,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:28,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:28:28,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:28,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:28:28,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:28:28,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:28:28,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 342 transitions, 3914 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:28,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:28,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:28:28,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:30,509 INFO L130 PetriNetUnfolder]: 288/861 cut-off events. [2022-11-20 11:28:30,510 INFO L131 PetriNetUnfolder]: For 9400/9400 co-relation queries the response was YES. [2022-11-20 11:28:30,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5896 conditions, 861 events. 288/861 cut-off events. For 9400/9400 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4549 event pairs, 58 based on Foata normal form. 1/860 useless extension candidates. Maximal degree in co-relation 5765. Up to 518 conditions per place. [2022-11-20 11:28:30,522 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 175 selfloop transitions, 137 changer transitions 23/374 dead transitions. [2022-11-20 11:28:30,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 374 transitions, 4911 flow [2022-11-20 11:28:30,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 11:28:30,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-20 11:28:30,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2146 transitions. [2022-11-20 11:28:30,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5568240788790867 [2022-11-20 11:28:30,526 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2146 transitions. [2022-11-20 11:28:30,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2146 transitions. [2022-11-20 11:28:30,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:30,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2146 transitions. [2022-11-20 11:28:30,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.34146341463415) internal successors, (2146), 41 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:30,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:30,531 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:30,531 INFO L175 Difference]: Start difference. First operand has 396 places, 342 transitions, 3914 flow. Second operand 41 states and 2146 transitions. [2022-11-20 11:28:30,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 374 transitions, 4911 flow [2022-11-20 11:28:30,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 374 transitions, 4609 flow, removed 37 selfloop flow, removed 34 redundant places. [2022-11-20 11:28:30,630 INFO L231 Difference]: Finished difference. Result has 380 places, 341 transitions, 3998 flow [2022-11-20 11:28:30,631 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3644, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=3998, PETRI_PLACES=380, PETRI_TRANSITIONS=341} [2022-11-20 11:28:30,631 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 292 predicate places. [2022-11-20 11:28:30,631 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 341 transitions, 3998 flow [2022-11-20 11:28:30,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:30,632 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:30,632 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:28:30,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-11-20 11:28:30,632 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:28:30,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:30,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1069779538, now seen corresponding path program 124 times [2022-11-20 11:28:30,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:30,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797870550] [2022-11-20 11:28:30,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:30,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:31,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:31,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:31,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797870550] [2022-11-20 11:28:31,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797870550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:31,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:31,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:28:31,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086321951] [2022-11-20 11:28:31,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:31,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:28:31,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:31,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:28:31,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:28:31,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:28:31,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 341 transitions, 3998 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:31,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:31,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:28:31,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:33,210 INFO L130 PetriNetUnfolder]: 281/844 cut-off events. [2022-11-20 11:28:33,210 INFO L131 PetriNetUnfolder]: For 7982/7982 co-relation queries the response was YES. [2022-11-20 11:28:33,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5693 conditions, 844 events. 281/844 cut-off events. For 7982/7982 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4452 event pairs, 49 based on Foata normal form. 1/843 useless extension candidates. Maximal degree in co-relation 5569. Up to 582 conditions per place. [2022-11-20 11:28:33,223 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 234 selfloop transitions, 77 changer transitions 16/366 dead transitions. [2022-11-20 11:28:33,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 366 transitions, 4866 flow [2022-11-20 11:28:33,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 11:28:33,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 11:28:33,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1734 transitions. [2022-11-20 11:28:33,226 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5589941972920697 [2022-11-20 11:28:33,226 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1734 transitions. [2022-11-20 11:28:33,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1734 transitions. [2022-11-20 11:28:33,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:33,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1734 transitions. [2022-11-20 11:28:33,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.54545454545455) internal successors, (1734), 33 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:33,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:33,230 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:33,230 INFO L175 Difference]: Start difference. First operand has 380 places, 341 transitions, 3998 flow. Second operand 33 states and 1734 transitions. [2022-11-20 11:28:33,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 366 transitions, 4866 flow [2022-11-20 11:28:33,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 366 transitions, 4468 flow, removed 64 selfloop flow, removed 36 redundant places. [2022-11-20 11:28:33,316 INFO L231 Difference]: Finished difference. Result has 377 places, 340 transitions, 3786 flow [2022-11-20 11:28:33,317 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3613, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3786, PETRI_PLACES=377, PETRI_TRANSITIONS=340} [2022-11-20 11:28:33,317 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 289 predicate places. [2022-11-20 11:28:33,317 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 340 transitions, 3786 flow [2022-11-20 11:28:33,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:33,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:33,317 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:28:33,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-11-20 11:28:33,318 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:28:33,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:33,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1835452708, now seen corresponding path program 125 times [2022-11-20 11:28:33,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:33,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415304556] [2022-11-20 11:28:33,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:33,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:33,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:33,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:33,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415304556] [2022-11-20 11:28:33,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415304556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:33,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:33,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:28:33,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068412248] [2022-11-20 11:28:33,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:33,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:28:33,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:33,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:28:33,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:28:33,946 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:28:33,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 340 transitions, 3786 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:33,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:33,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:28:33,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:36,060 INFO L130 PetriNetUnfolder]: 286/870 cut-off events. [2022-11-20 11:28:36,061 INFO L131 PetriNetUnfolder]: For 8039/8039 co-relation queries the response was YES. [2022-11-20 11:28:36,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5715 conditions, 870 events. 286/870 cut-off events. For 8039/8039 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4690 event pairs, 58 based on Foata normal form. 1/869 useless extension candidates. Maximal degree in co-relation 5588. Up to 563 conditions per place. [2022-11-20 11:28:36,071 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 223 selfloop transitions, 107 changer transitions 17/386 dead transitions. [2022-11-20 11:28:36,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 386 transitions, 4935 flow [2022-11-20 11:28:36,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:28:36,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:28:36,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1943 transitions. [2022-11-20 11:28:36,074 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.558654399079931 [2022-11-20 11:28:36,075 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1943 transitions. [2022-11-20 11:28:36,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1943 transitions. [2022-11-20 11:28:36,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:36,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1943 transitions. [2022-11-20 11:28:36,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.513513513513516) internal successors, (1943), 37 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:36,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:36,079 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:36,079 INFO L175 Difference]: Start difference. First operand has 377 places, 340 transitions, 3786 flow. Second operand 37 states and 1943 transitions. [2022-11-20 11:28:36,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 386 transitions, 4935 flow [2022-11-20 11:28:36,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 386 transitions, 4730 flow, removed 24 selfloop flow, removed 32 redundant places. [2022-11-20 11:28:36,163 INFO L231 Difference]: Finished difference. Result has 386 places, 356 transitions, 4125 flow [2022-11-20 11:28:36,163 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3607, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4125, PETRI_PLACES=386, PETRI_TRANSITIONS=356} [2022-11-20 11:28:36,164 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 298 predicate places. [2022-11-20 11:28:36,164 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 356 transitions, 4125 flow [2022-11-20 11:28:36,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:36,165 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:36,165 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:28:36,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-11-20 11:28:36,165 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:28:36,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:36,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1567221218, now seen corresponding path program 126 times [2022-11-20 11:28:36,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:36,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103647643] [2022-11-20 11:28:36,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:36,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:37,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:37,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:37,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103647643] [2022-11-20 11:28:37,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103647643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:37,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:37,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 11:28:37,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418656049] [2022-11-20 11:28:37,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:37,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:28:37,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:37,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:28:37,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:28:37,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:28:37,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 356 transitions, 4125 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:37,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:37,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:28:37,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:39,382 INFO L130 PetriNetUnfolder]: 283/877 cut-off events. [2022-11-20 11:28:39,382 INFO L131 PetriNetUnfolder]: For 8094/8094 co-relation queries the response was YES. [2022-11-20 11:28:39,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5791 conditions, 877 events. 283/877 cut-off events. For 8094/8094 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4769 event pairs, 59 based on Foata normal form. 1/875 useless extension candidates. Maximal degree in co-relation 5660. Up to 500 conditions per place. [2022-11-20 11:28:39,395 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 177 selfloop transitions, 99 changer transitions 67/382 dead transitions. [2022-11-20 11:28:39,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 382 transitions, 5028 flow [2022-11-20 11:28:39,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 11:28:39,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-20 11:28:39,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2142 transitions. [2022-11-20 11:28:39,398 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5557861961598339 [2022-11-20 11:28:39,399 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2142 transitions. [2022-11-20 11:28:39,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2142 transitions. [2022-11-20 11:28:39,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:39,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2142 transitions. [2022-11-20 11:28:39,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.24390243902439) internal successors, (2142), 41 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:39,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:39,403 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:39,403 INFO L175 Difference]: Start difference. First operand has 386 places, 356 transitions, 4125 flow. Second operand 41 states and 2142 transitions. [2022-11-20 11:28:39,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 382 transitions, 5028 flow [2022-11-20 11:28:39,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 382 transitions, 4835 flow, removed 39 selfloop flow, removed 26 redundant places. [2022-11-20 11:28:39,492 INFO L231 Difference]: Finished difference. Result has 401 places, 305 transitions, 3436 flow [2022-11-20 11:28:39,493 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3940, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=3436, PETRI_PLACES=401, PETRI_TRANSITIONS=305} [2022-11-20 11:28:39,493 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 313 predicate places. [2022-11-20 11:28:39,493 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 305 transitions, 3436 flow [2022-11-20 11:28:39,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:39,494 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:39,494 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:28:39,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-11-20 11:28:39,494 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:28:39,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:39,495 INFO L85 PathProgramCache]: Analyzing trace with hash 555859176, now seen corresponding path program 127 times [2022-11-20 11:28:39,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:39,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730207855] [2022-11-20 11:28:39,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:39,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:40,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:40,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:40,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730207855] [2022-11-20 11:28:40,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730207855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:40,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:40,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:28:40,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136667961] [2022-11-20 11:28:40,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:40,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:28:40,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:40,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:28:40,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:28:40,151 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:28:40,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 305 transitions, 3436 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:40,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:40,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:28:40,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:42,305 INFO L130 PetriNetUnfolder]: 261/813 cut-off events. [2022-11-20 11:28:42,305 INFO L131 PetriNetUnfolder]: For 8703/8703 co-relation queries the response was YES. [2022-11-20 11:28:42,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5402 conditions, 813 events. 261/813 cut-off events. For 8703/8703 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4297 event pairs, 44 based on Foata normal form. 1/811 useless extension candidates. Maximal degree in co-relation 5268. Up to 492 conditions per place. [2022-11-20 11:28:42,318 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 167 selfloop transitions, 92 changer transitions 41/339 dead transitions. [2022-11-20 11:28:42,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 339 transitions, 4397 flow [2022-11-20 11:28:42,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 11:28:42,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-20 11:28:42,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2045 transitions. [2022-11-20 11:28:42,321 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5578286961265685 [2022-11-20 11:28:42,321 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2045 transitions. [2022-11-20 11:28:42,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2045 transitions. [2022-11-20 11:28:42,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:42,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2045 transitions. [2022-11-20 11:28:42,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.43589743589744) internal successors, (2045), 39 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:42,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:42,326 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:42,326 INFO L175 Difference]: Start difference. First operand has 401 places, 305 transitions, 3436 flow. Second operand 39 states and 2045 transitions. [2022-11-20 11:28:42,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 339 transitions, 4397 flow [2022-11-20 11:28:42,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 339 transitions, 3963 flow, removed 59 selfloop flow, removed 52 redundant places. [2022-11-20 11:28:42,411 INFO L231 Difference]: Finished difference. Result has 378 places, 288 transitions, 3098 flow [2022-11-20 11:28:42,411 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3051, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3098, PETRI_PLACES=378, PETRI_TRANSITIONS=288} [2022-11-20 11:28:42,411 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 290 predicate places. [2022-11-20 11:28:42,411 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 288 transitions, 3098 flow [2022-11-20 11:28:42,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:42,412 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:42,412 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:28:42,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-11-20 11:28:42,412 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:28:42,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:42,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1560481334, now seen corresponding path program 128 times [2022-11-20 11:28:42,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:42,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080724622] [2022-11-20 11:28:42,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:42,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:43,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:43,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:43,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080724622] [2022-11-20 11:28:43,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080724622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:43,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:43,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 11:28:43,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713871404] [2022-11-20 11:28:43,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:43,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:28:43,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:43,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:28:43,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:28:43,089 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:28:43,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 288 transitions, 3098 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:43,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:43,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:28:43,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:45,315 INFO L130 PetriNetUnfolder]: 250/761 cut-off events. [2022-11-20 11:28:45,315 INFO L131 PetriNetUnfolder]: For 7767/7767 co-relation queries the response was YES. [2022-11-20 11:28:45,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5036 conditions, 761 events. 250/761 cut-off events. For 7767/7767 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3868 event pairs, 49 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 4909. Up to 486 conditions per place. [2022-11-20 11:28:45,329 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 160 selfloop transitions, 99 changer transitions 15/313 dead transitions. [2022-11-20 11:28:45,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 313 transitions, 3913 flow [2022-11-20 11:28:45,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 11:28:45,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-20 11:28:45,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2092 transitions. [2022-11-20 11:28:45,332 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5563829787234043 [2022-11-20 11:28:45,333 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2092 transitions. [2022-11-20 11:28:45,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2092 transitions. [2022-11-20 11:28:45,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:45,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2092 transitions. [2022-11-20 11:28:45,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 52.3) internal successors, (2092), 40 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:45,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:45,338 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:45,338 INFO L175 Difference]: Start difference. First operand has 378 places, 288 transitions, 3098 flow. Second operand 40 states and 2092 transitions. [2022-11-20 11:28:45,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 313 transitions, 3913 flow [2022-11-20 11:28:45,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 313 transitions, 3609 flow, removed 77 selfloop flow, removed 35 redundant places. [2022-11-20 11:28:45,405 INFO L231 Difference]: Finished difference. Result has 382 places, 288 transitions, 3102 flow [2022-11-20 11:28:45,405 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2806, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=3102, PETRI_PLACES=382, PETRI_TRANSITIONS=288} [2022-11-20 11:28:45,406 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 294 predicate places. [2022-11-20 11:28:45,406 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 288 transitions, 3102 flow [2022-11-20 11:28:45,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:45,407 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:45,407 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:28:45,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-11-20 11:28:45,407 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:28:45,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:45,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1865751286, now seen corresponding path program 129 times [2022-11-20 11:28:45,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:45,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714547071] [2022-11-20 11:28:45,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:45,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:46,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:46,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714547071] [2022-11-20 11:28:46,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714547071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:46,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:46,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:28:46,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473120630] [2022-11-20 11:28:46,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:46,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:28:46,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:46,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:28:46,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:28:46,020 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:28:46,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 288 transitions, 3102 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:46,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:46,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:28:46,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:47,735 INFO L130 PetriNetUnfolder]: 248/757 cut-off events. [2022-11-20 11:28:47,736 INFO L131 PetriNetUnfolder]: For 7445/7445 co-relation queries the response was YES. [2022-11-20 11:28:47,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4980 conditions, 757 events. 248/757 cut-off events. For 7445/7445 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3859 event pairs, 51 based on Foata normal form. 1/755 useless extension candidates. Maximal degree in co-relation 4852. Up to 506 conditions per place. [2022-11-20 11:28:47,747 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 180 selfloop transitions, 67 changer transitions 22/308 dead transitions. [2022-11-20 11:28:47,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 308 transitions, 3734 flow [2022-11-20 11:28:47,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:28:47,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:28:47,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1679 transitions. [2022-11-20 11:28:47,749 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5581781914893617 [2022-11-20 11:28:47,750 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1679 transitions. [2022-11-20 11:28:47,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1679 transitions. [2022-11-20 11:28:47,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:47,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1679 transitions. [2022-11-20 11:28:47,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.46875) internal successors, (1679), 32 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:47,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:47,754 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:47,754 INFO L175 Difference]: Start difference. First operand has 382 places, 288 transitions, 3102 flow. Second operand 32 states and 1679 transitions. [2022-11-20 11:28:47,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 308 transitions, 3734 flow [2022-11-20 11:28:47,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 308 transitions, 3433 flow, removed 53 selfloop flow, removed 38 redundant places. [2022-11-20 11:28:47,824 INFO L231 Difference]: Finished difference. Result has 375 places, 277 transitions, 2826 flow [2022-11-20 11:28:47,825 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2807, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2826, PETRI_PLACES=375, PETRI_TRANSITIONS=277} [2022-11-20 11:28:47,825 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 287 predicate places. [2022-11-20 11:28:47,825 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 277 transitions, 2826 flow [2022-11-20 11:28:47,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:47,826 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:47,826 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:28:47,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-11-20 11:28:47,826 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:28:47,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:47,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1223279382, now seen corresponding path program 130 times [2022-11-20 11:28:47,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:47,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595498016] [2022-11-20 11:28:47,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:47,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:48,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:48,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:48,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595498016] [2022-11-20 11:28:48,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595498016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:48,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:48,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:28:48,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141493181] [2022-11-20 11:28:48,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:48,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:28:48,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:48,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:28:48,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:28:48,611 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:28:48,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 277 transitions, 2826 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:48,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:48,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:28:48,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:50,417 INFO L130 PetriNetUnfolder]: 244/742 cut-off events. [2022-11-20 11:28:50,417 INFO L131 PetriNetUnfolder]: For 6788/6788 co-relation queries the response was YES. [2022-11-20 11:28:50,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4766 conditions, 742 events. 244/742 cut-off events. For 6788/6788 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3709 event pairs, 57 based on Foata normal form. 1/742 useless extension candidates. Maximal degree in co-relation 4638. Up to 501 conditions per place. [2022-11-20 11:28:50,428 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 173 selfloop transitions, 58 changer transitions 26/296 dead transitions. [2022-11-20 11:28:50,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 296 transitions, 3422 flow [2022-11-20 11:28:50,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:28:50,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 11:28:50,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1626 transitions. [2022-11-20 11:28:50,431 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5579958819492107 [2022-11-20 11:28:50,431 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1626 transitions. [2022-11-20 11:28:50,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1626 transitions. [2022-11-20 11:28:50,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:50,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1626 transitions. [2022-11-20 11:28:50,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.45161290322581) internal successors, (1626), 31 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:50,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:50,434 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:50,435 INFO L175 Difference]: Start difference. First operand has 375 places, 277 transitions, 2826 flow. Second operand 31 states and 1626 transitions. [2022-11-20 11:28:50,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 296 transitions, 3422 flow [2022-11-20 11:28:50,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 296 transitions, 3175 flow, removed 15 selfloop flow, removed 42 redundant places. [2022-11-20 11:28:50,499 INFO L231 Difference]: Finished difference. Result has 355 places, 261 transitions, 2558 flow [2022-11-20 11:28:50,500 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2583, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2558, PETRI_PLACES=355, PETRI_TRANSITIONS=261} [2022-11-20 11:28:50,500 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 267 predicate places. [2022-11-20 11:28:50,500 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 261 transitions, 2558 flow [2022-11-20 11:28:50,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:50,501 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:50,501 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:28:50,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-11-20 11:28:50,501 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:28:50,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:50,501 INFO L85 PathProgramCache]: Analyzing trace with hash 197787322, now seen corresponding path program 131 times [2022-11-20 11:28:50,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:50,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45462139] [2022-11-20 11:28:50,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:50,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:51,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:51,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:51,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45462139] [2022-11-20 11:28:51,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45462139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:51,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:51,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:28:51,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366859228] [2022-11-20 11:28:51,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:51,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:28:51,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:51,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:28:51,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:28:51,141 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:28:51,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 261 transitions, 2558 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:51,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:51,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:28:51,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:53,018 INFO L130 PetriNetUnfolder]: 238/710 cut-off events. [2022-11-20 11:28:53,019 INFO L131 PetriNetUnfolder]: For 6439/6439 co-relation queries the response was YES. [2022-11-20 11:28:53,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4543 conditions, 710 events. 238/710 cut-off events. For 6439/6439 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3475 event pairs, 57 based on Foata normal form. 1/710 useless extension candidates. Maximal degree in co-relation 4424. Up to 466 conditions per place. [2022-11-20 11:28:53,028 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 144 selfloop transitions, 77 changer transitions 19/279 dead transitions. [2022-11-20 11:28:53,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 279 transitions, 3119 flow [2022-11-20 11:28:53,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:28:53,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:28:53,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1783 transitions. [2022-11-20 11:28:53,031 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5578848560700876 [2022-11-20 11:28:53,031 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1783 transitions. [2022-11-20 11:28:53,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1783 transitions. [2022-11-20 11:28:53,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:53,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1783 transitions. [2022-11-20 11:28:53,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.44117647058823) internal successors, (1783), 34 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:53,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:53,035 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:53,035 INFO L175 Difference]: Start difference. First operand has 355 places, 261 transitions, 2558 flow. Second operand 34 states and 1783 transitions. [2022-11-20 11:28:53,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 279 transitions, 3119 flow [2022-11-20 11:28:53,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 279 transitions, 2884 flow, removed 15 selfloop flow, removed 34 redundant places. [2022-11-20 11:28:53,100 INFO L231 Difference]: Finished difference. Result has 339 places, 250 transitions, 2411 flow [2022-11-20 11:28:53,100 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2329, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2411, PETRI_PLACES=339, PETRI_TRANSITIONS=250} [2022-11-20 11:28:53,101 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 251 predicate places. [2022-11-20 11:28:53,101 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 250 transitions, 2411 flow [2022-11-20 11:28:53,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:53,101 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:53,101 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:28:53,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-11-20 11:28:53,101 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:28:53,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:53,102 INFO L85 PathProgramCache]: Analyzing trace with hash -989232080, now seen corresponding path program 132 times [2022-11-20 11:28:53,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:53,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167497241] [2022-11-20 11:28:53,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:53,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:53,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:53,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:53,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167497241] [2022-11-20 11:28:53,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167497241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:53,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:53,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:28:53,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239952383] [2022-11-20 11:28:53,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:53,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:28:53,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:53,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:28:53,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:28:53,751 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:28:53,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 250 transitions, 2411 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:53,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:53,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:28:53,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:55,497 INFO L130 PetriNetUnfolder]: 233/692 cut-off events. [2022-11-20 11:28:55,497 INFO L131 PetriNetUnfolder]: For 5696/5696 co-relation queries the response was YES. [2022-11-20 11:28:55,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4346 conditions, 692 events. 233/692 cut-off events. For 5696/5696 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3319 event pairs, 60 based on Foata normal form. 1/691 useless extension candidates. Maximal degree in co-relation 4233. Up to 469 conditions per place. [2022-11-20 11:28:55,506 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 144 selfloop transitions, 65 changer transitions 19/267 dead transitions. [2022-11-20 11:28:55,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 267 transitions, 2945 flow [2022-11-20 11:28:55,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:28:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:28:55,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1774 transitions. [2022-11-20 11:28:55,508 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5550688360450563 [2022-11-20 11:28:55,509 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1774 transitions. [2022-11-20 11:28:55,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1774 transitions. [2022-11-20 11:28:55,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:55,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1774 transitions. [2022-11-20 11:28:55,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.1764705882353) internal successors, (1774), 34 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:55,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:55,512 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:55,512 INFO L175 Difference]: Start difference. First operand has 339 places, 250 transitions, 2411 flow. Second operand 34 states and 1774 transitions. [2022-11-20 11:28:55,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 267 transitions, 2945 flow [2022-11-20 11:28:55,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 267 transitions, 2703 flow, removed 13 selfloop flow, removed 37 redundant places. [2022-11-20 11:28:55,561 INFO L231 Difference]: Finished difference. Result has 326 places, 239 transitions, 2238 flow [2022-11-20 11:28:55,562 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2175, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2238, PETRI_PLACES=326, PETRI_TRANSITIONS=239} [2022-11-20 11:28:55,562 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 238 predicate places. [2022-11-20 11:28:55,562 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 239 transitions, 2238 flow [2022-11-20 11:28:55,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:55,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:55,563 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:28:55,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-11-20 11:28:55,563 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:28:55,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:55,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1383495034, now seen corresponding path program 133 times [2022-11-20 11:28:55,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:55,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092748106] [2022-11-20 11:28:55,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:55,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:56,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:56,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092748106] [2022-11-20 11:28:56,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092748106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:56,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:56,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:28:56,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541787824] [2022-11-20 11:28:56,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:56,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:28:56,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:56,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:28:56,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:28:56,229 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:28:56,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 239 transitions, 2238 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:56,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:56,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:28:56,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:58,165 INFO L130 PetriNetUnfolder]: 230/676 cut-off events. [2022-11-20 11:28:58,165 INFO L131 PetriNetUnfolder]: For 5231/5231 co-relation queries the response was YES. [2022-11-20 11:28:58,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4189 conditions, 676 events. 230/676 cut-off events. For 5231/5231 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3210 event pairs, 60 based on Foata normal form. 1/675 useless extension candidates. Maximal degree in co-relation 4081. Up to 450 conditions per place. [2022-11-20 11:28:58,173 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 131 selfloop transitions, 61 changer transitions 27/258 dead transitions. [2022-11-20 11:28:58,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 258 transitions, 2756 flow [2022-11-20 11:28:58,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:28:58,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:28:58,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1781 transitions. [2022-11-20 11:28:58,176 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5572590738423029 [2022-11-20 11:28:58,176 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1781 transitions. [2022-11-20 11:28:58,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1781 transitions. [2022-11-20 11:28:58,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:58,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1781 transitions. [2022-11-20 11:28:58,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.38235294117647) internal successors, (1781), 34 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:58,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:58,180 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:58,180 INFO L175 Difference]: Start difference. First operand has 326 places, 239 transitions, 2238 flow. Second operand 34 states and 1781 transitions. [2022-11-20 11:28:58,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 258 transitions, 2756 flow [2022-11-20 11:28:58,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 258 transitions, 2548 flow, removed 11 selfloop flow, removed 39 redundant places. [2022-11-20 11:28:58,223 INFO L231 Difference]: Finished difference. Result has 312 places, 222 transitions, 2037 flow [2022-11-20 11:28:58,223 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2036, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2037, PETRI_PLACES=312, PETRI_TRANSITIONS=222} [2022-11-20 11:28:58,224 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 224 predicate places. [2022-11-20 11:28:58,224 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 222 transitions, 2037 flow [2022-11-20 11:28:58,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:58,224 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:58,224 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:28:58,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-11-20 11:28:58,225 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:28:58,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:58,225 INFO L85 PathProgramCache]: Analyzing trace with hash -581400274, now seen corresponding path program 134 times [2022-11-20 11:28:58,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:58,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788002691] [2022-11-20 11:28:58,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:58,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:58,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:58,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:58,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788002691] [2022-11-20 11:28:58,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788002691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:58,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:58,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 11:28:58,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184476292] [2022-11-20 11:28:58,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:58,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:28:58,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:58,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:28:58,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:28:58,987 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:28:58,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 222 transitions, 2037 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:58,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:58,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:28:58,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:00,877 INFO L130 PetriNetUnfolder]: 223/655 cut-off events. [2022-11-20 11:29:00,877 INFO L131 PetriNetUnfolder]: For 4651/4651 co-relation queries the response was YES. [2022-11-20 11:29:00,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3981 conditions, 655 events. 223/655 cut-off events. For 4651/4651 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3050 event pairs, 58 based on Foata normal form. 1/654 useless extension candidates. Maximal degree in co-relation 3878. Up to 447 conditions per place. [2022-11-20 11:29:00,883 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 128 selfloop transitions, 55 changer transitions 19/241 dead transitions. [2022-11-20 11:29:00,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 241 transitions, 2521 flow [2022-11-20 11:29:00,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:29:00,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:29:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1668 transitions. [2022-11-20 11:29:00,886 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5545212765957447 [2022-11-20 11:29:00,887 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1668 transitions. [2022-11-20 11:29:00,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1668 transitions. [2022-11-20 11:29:00,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:00,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1668 transitions. [2022-11-20 11:29:00,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.125) internal successors, (1668), 32 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:00,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:00,893 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:00,893 INFO L175 Difference]: Start difference. First operand has 312 places, 222 transitions, 2037 flow. Second operand 32 states and 1668 transitions. [2022-11-20 11:29:00,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 241 transitions, 2521 flow [2022-11-20 11:29:00,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 241 transitions, 2313 flow, removed 14 selfloop flow, removed 36 redundant places. [2022-11-20 11:29:00,930 INFO L231 Difference]: Finished difference. Result has 292 places, 213 transitions, 1895 flow [2022-11-20 11:29:00,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1895, PETRI_PLACES=292, PETRI_TRANSITIONS=213} [2022-11-20 11:29:00,930 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 204 predicate places. [2022-11-20 11:29:00,931 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 213 transitions, 1895 flow [2022-11-20 11:29:00,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:00,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:00,931 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:00,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-11-20 11:29:00,931 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:29:00,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:00,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1296539176, now seen corresponding path program 135 times [2022-11-20 11:29:00,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:00,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323057210] [2022-11-20 11:29:00,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:00,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:01,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:01,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:01,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323057210] [2022-11-20 11:29:01,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323057210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:01,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:01,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 11:29:01,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675645988] [2022-11-20 11:29:01,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:01,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:29:01,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:01,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:29:01,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:29:01,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:29:01,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 213 transitions, 1895 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:01,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:01,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:29:01,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:03,423 INFO L130 PetriNetUnfolder]: 221/639 cut-off events. [2022-11-20 11:29:03,423 INFO L131 PetriNetUnfolder]: For 4757/4757 co-relation queries the response was YES. [2022-11-20 11:29:03,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3859 conditions, 639 events. 221/639 cut-off events. For 4757/4757 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2912 event pairs, 43 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 3761. Up to 433 conditions per place. [2022-11-20 11:29:03,431 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 116 selfloop transitions, 46 changer transitions 31/232 dead transitions. [2022-11-20 11:29:03,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 232 transitions, 2361 flow [2022-11-20 11:29:03,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:29:03,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:29:03,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1670 transitions. [2022-11-20 11:29:03,437 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.555186170212766 [2022-11-20 11:29:03,437 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1670 transitions. [2022-11-20 11:29:03,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1670 transitions. [2022-11-20 11:29:03,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:03,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1670 transitions. [2022-11-20 11:29:03,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.1875) internal successors, (1670), 32 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:03,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:03,443 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:03,443 INFO L175 Difference]: Start difference. First operand has 292 places, 213 transitions, 1895 flow. Second operand 32 states and 1670 transitions. [2022-11-20 11:29:03,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 232 transitions, 2361 flow [2022-11-20 11:29:03,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 232 transitions, 2157 flow, removed 12 selfloop flow, removed 29 redundant places. [2022-11-20 11:29:03,488 INFO L231 Difference]: Finished difference. Result has 280 places, 193 transitions, 1667 flow [2022-11-20 11:29:03,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1667, PETRI_PLACES=280, PETRI_TRANSITIONS=193} [2022-11-20 11:29:03,489 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 192 predicate places. [2022-11-20 11:29:03,489 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 193 transitions, 1667 flow [2022-11-20 11:29:03,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:03,489 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:03,489 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:03,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-11-20 11:29:03,490 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:29:03,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:03,490 INFO L85 PathProgramCache]: Analyzing trace with hash 506806154, now seen corresponding path program 136 times [2022-11-20 11:29:03,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:03,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181542830] [2022-11-20 11:29:03,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:03,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:03,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:03,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:03,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181542830] [2022-11-20 11:29:03,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181542830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:03,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:03,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:29:03,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258785143] [2022-11-20 11:29:03,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:03,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:29:03,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:03,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:29:03,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:29:03,983 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:29:03,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 193 transitions, 1667 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:03,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:03,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:29:03,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:05,634 INFO L130 PetriNetUnfolder]: 243/678 cut-off events. [2022-11-20 11:29:05,634 INFO L131 PetriNetUnfolder]: For 4913/4913 co-relation queries the response was YES. [2022-11-20 11:29:05,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4086 conditions, 678 events. 243/678 cut-off events. For 4913/4913 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3179 event pairs, 56 based on Foata normal form. 1/677 useless extension candidates. Maximal degree in co-relation 3992. Up to 408 conditions per place. [2022-11-20 11:29:05,643 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 117 selfloop transitions, 66 changer transitions 35/257 dead transitions. [2022-11-20 11:29:05,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 257 transitions, 2836 flow [2022-11-20 11:29:05,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:29:05,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:29:05,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1812 transitions. [2022-11-20 11:29:05,646 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5669586983729662 [2022-11-20 11:29:05,646 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1812 transitions. [2022-11-20 11:29:05,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1812 transitions. [2022-11-20 11:29:05,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:05,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1812 transitions. [2022-11-20 11:29:05,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.294117647058826) internal successors, (1812), 34 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:05,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:05,650 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:05,650 INFO L175 Difference]: Start difference. First operand has 280 places, 193 transitions, 1667 flow. Second operand 34 states and 1812 transitions. [2022-11-20 11:29:05,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 257 transitions, 2836 flow [2022-11-20 11:29:05,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 257 transitions, 2453 flow, removed 70 selfloop flow, removed 28 redundant places. [2022-11-20 11:29:05,680 INFO L231 Difference]: Finished difference. Result has 264 places, 203 transitions, 1725 flow [2022-11-20 11:29:05,680 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1725, PETRI_PLACES=264, PETRI_TRANSITIONS=203} [2022-11-20 11:29:05,680 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 176 predicate places. [2022-11-20 11:29:05,681 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 203 transitions, 1725 flow [2022-11-20 11:29:05,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:05,681 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:05,681 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:05,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-11-20 11:29:05,681 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:29:05,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:05,682 INFO L85 PathProgramCache]: Analyzing trace with hash -591456042, now seen corresponding path program 137 times [2022-11-20 11:29:05,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:05,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386400938] [2022-11-20 11:29:05,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:05,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:06,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:06,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:06,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386400938] [2022-11-20 11:29:06,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386400938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:06,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:06,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:29:06,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468665648] [2022-11-20 11:29:06,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:06,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:29:06,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:06,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:29:06,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:29:06,201 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:29:06,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 203 transitions, 1725 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:06,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:06,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:29:06,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:07,869 INFO L130 PetriNetUnfolder]: 289/796 cut-off events. [2022-11-20 11:29:07,869 INFO L131 PetriNetUnfolder]: For 7118/7118 co-relation queries the response was YES. [2022-11-20 11:29:07,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4889 conditions, 796 events. 289/796 cut-off events. For 7118/7118 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3866 event pairs, 57 based on Foata normal form. 1/795 useless extension candidates. Maximal degree in co-relation 4796. Up to 473 conditions per place. [2022-11-20 11:29:07,877 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 150 selfloop transitions, 99 changer transitions 21/309 dead transitions. [2022-11-20 11:29:07,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 309 transitions, 3748 flow [2022-11-20 11:29:07,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:29:07,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:29:07,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1873 transitions. [2022-11-20 11:29:07,880 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5693009118541034 [2022-11-20 11:29:07,880 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1873 transitions. [2022-11-20 11:29:07,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1873 transitions. [2022-11-20 11:29:07,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:07,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1873 transitions. [2022-11-20 11:29:07,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.51428571428571) internal successors, (1873), 35 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:07,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:07,885 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:07,885 INFO L175 Difference]: Start difference. First operand has 264 places, 203 transitions, 1725 flow. Second operand 35 states and 1873 transitions. [2022-11-20 11:29:07,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 309 transitions, 3748 flow [2022-11-20 11:29:07,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 309 transitions, 3334 flow, removed 154 selfloop flow, removed 28 redundant places. [2022-11-20 11:29:07,922 INFO L231 Difference]: Finished difference. Result has 273 places, 257 transitions, 2635 flow [2022-11-20 11:29:07,922 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2635, PETRI_PLACES=273, PETRI_TRANSITIONS=257} [2022-11-20 11:29:07,922 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 185 predicate places. [2022-11-20 11:29:07,922 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 257 transitions, 2635 flow [2022-11-20 11:29:07,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:07,923 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:07,923 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:07,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-11-20 11:29:07,923 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:29:07,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:07,923 INFO L85 PathProgramCache]: Analyzing trace with hash 38226082, now seen corresponding path program 138 times [2022-11-20 11:29:07,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:07,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931307352] [2022-11-20 11:29:07,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:07,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:08,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:08,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:08,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931307352] [2022-11-20 11:29:08,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931307352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:08,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:08,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:29:08,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959020288] [2022-11-20 11:29:08,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:08,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:29:08,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:08,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:29:08,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:29:08,415 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:29:08,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 257 transitions, 2635 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:08,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:08,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:29:08,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:10,487 INFO L130 PetriNetUnfolder]: 339/912 cut-off events. [2022-11-20 11:29:10,487 INFO L131 PetriNetUnfolder]: For 10717/10717 co-relation queries the response was YES. [2022-11-20 11:29:10,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6149 conditions, 912 events. 339/912 cut-off events. For 10717/10717 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4646 event pairs, 54 based on Foata normal form. 1/911 useless extension candidates. Maximal degree in co-relation 6053. Up to 494 conditions per place. [2022-11-20 11:29:10,499 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 145 selfloop transitions, 157 changer transitions 21/362 dead transitions. [2022-11-20 11:29:10,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 362 transitions, 4767 flow [2022-11-20 11:29:10,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 11:29:10,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-20 11:29:10,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2125 transitions. [2022-11-20 11:29:10,502 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5651595744680851 [2022-11-20 11:29:10,502 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2125 transitions. [2022-11-20 11:29:10,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2125 transitions. [2022-11-20 11:29:10,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:10,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2125 transitions. [2022-11-20 11:29:10,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.125) internal successors, (2125), 40 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:10,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:10,507 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:10,507 INFO L175 Difference]: Start difference. First operand has 273 places, 257 transitions, 2635 flow. Second operand 40 states and 2125 transitions. [2022-11-20 11:29:10,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 362 transitions, 4767 flow [2022-11-20 11:29:10,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 362 transitions, 4299 flow, removed 215 selfloop flow, removed 10 redundant places. [2022-11-20 11:29:10,595 INFO L231 Difference]: Finished difference. Result has 310 places, 310 transitions, 3580 flow [2022-11-20 11:29:10,596 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2171, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=3580, PETRI_PLACES=310, PETRI_TRANSITIONS=310} [2022-11-20 11:29:10,596 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 222 predicate places. [2022-11-20 11:29:10,596 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 310 transitions, 3580 flow [2022-11-20 11:29:10,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:10,597 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:10,597 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:10,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-11-20 11:29:10,597 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:29:10,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:10,597 INFO L85 PathProgramCache]: Analyzing trace with hash -41106020, now seen corresponding path program 139 times [2022-11-20 11:29:10,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:10,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532302497] [2022-11-20 11:29:10,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:10,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:11,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:11,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:11,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532302497] [2022-11-20 11:29:11,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532302497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:11,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:11,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:29:11,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145129246] [2022-11-20 11:29:11,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:11,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:29:11,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:11,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:29:11,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:29:11,170 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:29:11,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 310 transitions, 3580 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:11,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:11,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:29:11,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:12,857 INFO L130 PetriNetUnfolder]: 348/946 cut-off events. [2022-11-20 11:29:12,857 INFO L131 PetriNetUnfolder]: For 14251/14251 co-relation queries the response was YES. [2022-11-20 11:29:12,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6906 conditions, 946 events. 348/946 cut-off events. For 14251/14251 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5036 event pairs, 75 based on Foata normal form. 1/945 useless extension candidates. Maximal degree in co-relation 6797. Up to 644 conditions per place. [2022-11-20 11:29:12,870 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 224 selfloop transitions, 73 changer transitions 35/371 dead transitions. [2022-11-20 11:29:12,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 371 transitions, 4956 flow [2022-11-20 11:29:12,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 11:29:12,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-20 11:29:12,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1558 transitions. [2022-11-20 11:29:12,873 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5715333822450477 [2022-11-20 11:29:12,873 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1558 transitions. [2022-11-20 11:29:12,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1558 transitions. [2022-11-20 11:29:12,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:12,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1558 transitions. [2022-11-20 11:29:12,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.724137931034484) internal successors, (1558), 29 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:12,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:12,876 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:12,876 INFO L175 Difference]: Start difference. First operand has 310 places, 310 transitions, 3580 flow. Second operand 29 states and 1558 transitions. [2022-11-20 11:29:12,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 371 transitions, 4956 flow [2022-11-20 11:29:12,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 371 transitions, 4412 flow, removed 241 selfloop flow, removed 15 redundant places. [2022-11-20 11:29:12,990 INFO L231 Difference]: Finished difference. Result has 330 places, 318 transitions, 3392 flow [2022-11-20 11:29:12,990 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3392, PETRI_PLACES=330, PETRI_TRANSITIONS=318} [2022-11-20 11:29:12,990 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 242 predicate places. [2022-11-20 11:29:12,991 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 318 transitions, 3392 flow [2022-11-20 11:29:12,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:12,991 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:12,991 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:12,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-11-20 11:29:12,991 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:29:12,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:12,992 INFO L85 PathProgramCache]: Analyzing trace with hash 704169166, now seen corresponding path program 140 times [2022-11-20 11:29:12,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:12,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685661549] [2022-11-20 11:29:12,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:12,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:13,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:13,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:13,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685661549] [2022-11-20 11:29:13,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685661549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:13,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:13,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:29:13,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539510938] [2022-11-20 11:29:13,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:13,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:29:13,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:13,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:29:13,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:29:13,545 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:29:13,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 318 transitions, 3392 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:13,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:13,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:29:13,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:15,374 INFO L130 PetriNetUnfolder]: 348/956 cut-off events. [2022-11-20 11:29:15,374 INFO L131 PetriNetUnfolder]: For 14783/14783 co-relation queries the response was YES. [2022-11-20 11:29:15,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6944 conditions, 956 events. 348/956 cut-off events. For 14783/14783 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5179 event pairs, 74 based on Foata normal form. 1/955 useless extension candidates. Maximal degree in co-relation 6823. Up to 612 conditions per place. [2022-11-20 11:29:15,388 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 202 selfloop transitions, 105 changer transitions 35/381 dead transitions. [2022-11-20 11:29:15,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 381 transitions, 4899 flow [2022-11-20 11:29:15,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:29:15,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:29:15,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1812 transitions. [2022-11-20 11:29:15,391 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5669586983729662 [2022-11-20 11:29:15,391 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1812 transitions. [2022-11-20 11:29:15,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1812 transitions. [2022-11-20 11:29:15,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:15,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1812 transitions. [2022-11-20 11:29:15,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.294117647058826) internal successors, (1812), 34 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:15,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:15,395 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:15,395 INFO L175 Difference]: Start difference. First operand has 330 places, 318 transitions, 3392 flow. Second operand 34 states and 1812 transitions. [2022-11-20 11:29:15,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 381 transitions, 4899 flow [2022-11-20 11:29:15,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 381 transitions, 4604 flow, removed 100 selfloop flow, removed 26 redundant places. [2022-11-20 11:29:15,480 INFO L231 Difference]: Finished difference. Result has 341 places, 326 transitions, 3602 flow [2022-11-20 11:29:15,480 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3175, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3602, PETRI_PLACES=341, PETRI_TRANSITIONS=326} [2022-11-20 11:29:15,480 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 253 predicate places. [2022-11-20 11:29:15,481 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 326 transitions, 3602 flow [2022-11-20 11:29:15,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:15,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:15,481 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:15,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-11-20 11:29:15,481 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:29:15,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:15,482 INFO L85 PathProgramCache]: Analyzing trace with hash -513212898, now seen corresponding path program 141 times [2022-11-20 11:29:15,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:15,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887378230] [2022-11-20 11:29:15,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:15,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:16,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:16,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:16,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887378230] [2022-11-20 11:29:16,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887378230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:16,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:16,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:29:16,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609827196] [2022-11-20 11:29:16,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:16,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:29:16,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:16,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:29:16,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:29:16,039 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:29:16,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 326 transitions, 3602 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:16,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:16,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:29:16,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:17,747 INFO L130 PetriNetUnfolder]: 354/996 cut-off events. [2022-11-20 11:29:17,747 INFO L131 PetriNetUnfolder]: For 14120/14120 co-relation queries the response was YES. [2022-11-20 11:29:17,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7120 conditions, 996 events. 354/996 cut-off events. For 14120/14120 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5600 event pairs, 65 based on Foata normal form. 1/995 useless extension candidates. Maximal degree in co-relation 6997. Up to 646 conditions per place. [2022-11-20 11:29:17,757 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 223 selfloop transitions, 98 changer transitions 35/395 dead transitions. [2022-11-20 11:29:17,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 395 transitions, 5258 flow [2022-11-20 11:29:17,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 11:29:17,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 11:29:17,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1756 transitions. [2022-11-20 11:29:17,760 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.56608639587363 [2022-11-20 11:29:17,760 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1756 transitions. [2022-11-20 11:29:17,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1756 transitions. [2022-11-20 11:29:17,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:17,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1756 transitions. [2022-11-20 11:29:17,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.21212121212121) internal successors, (1756), 33 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:17,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:17,764 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:17,764 INFO L175 Difference]: Start difference. First operand has 341 places, 326 transitions, 3602 flow. Second operand 33 states and 1756 transitions. [2022-11-20 11:29:17,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 395 transitions, 5258 flow [2022-11-20 11:29:17,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 395 transitions, 4907 flow, removed 122 selfloop flow, removed 29 redundant places. [2022-11-20 11:29:17,835 INFO L231 Difference]: Finished difference. Result has 348 places, 341 transitions, 3896 flow [2022-11-20 11:29:17,836 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3391, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3896, PETRI_PLACES=348, PETRI_TRANSITIONS=341} [2022-11-20 11:29:17,836 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 260 predicate places. [2022-11-20 11:29:17,836 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 341 transitions, 3896 flow [2022-11-20 11:29:17,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:17,837 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:17,837 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:17,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-11-20 11:29:17,837 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:29:17,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:17,838 INFO L85 PathProgramCache]: Analyzing trace with hash -654896460, now seen corresponding path program 142 times [2022-11-20 11:29:17,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:17,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932855323] [2022-11-20 11:29:17,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:17,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:18,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:18,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:18,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932855323] [2022-11-20 11:29:18,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932855323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:18,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:18,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:29:18,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637256562] [2022-11-20 11:29:18,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:18,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:29:18,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:18,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:29:18,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:29:18,496 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:29:18,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 341 transitions, 3896 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:18,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:18,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:29:18,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:20,421 INFO L130 PetriNetUnfolder]: 355/999 cut-off events. [2022-11-20 11:29:20,421 INFO L131 PetriNetUnfolder]: For 14015/14015 co-relation queries the response was YES. [2022-11-20 11:29:20,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7188 conditions, 999 events. 355/999 cut-off events. For 14015/14015 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5670 event pairs, 68 based on Foata normal form. 1/997 useless extension candidates. Maximal degree in co-relation 7062. Up to 647 conditions per place. [2022-11-20 11:29:20,437 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 222 selfloop transitions, 102 changer transitions 35/398 dead transitions. [2022-11-20 11:29:20,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 398 transitions, 5356 flow [2022-11-20 11:29:20,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:29:20,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:29:20,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1805 transitions. [2022-11-20 11:29:20,439 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5647684605757196 [2022-11-20 11:29:20,439 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1805 transitions. [2022-11-20 11:29:20,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1805 transitions. [2022-11-20 11:29:20,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:20,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1805 transitions. [2022-11-20 11:29:20,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.088235294117645) internal successors, (1805), 34 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:20,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:20,443 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:20,443 INFO L175 Difference]: Start difference. First operand has 348 places, 341 transitions, 3896 flow. Second operand 34 states and 1805 transitions. [2022-11-20 11:29:20,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 398 transitions, 5356 flow [2022-11-20 11:29:20,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 398 transitions, 5126 flow, removed 66 selfloop flow, removed 26 redundant places. [2022-11-20 11:29:20,525 INFO L231 Difference]: Finished difference. Result has 359 places, 344 transitions, 4068 flow [2022-11-20 11:29:20,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3708, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4068, PETRI_PLACES=359, PETRI_TRANSITIONS=344} [2022-11-20 11:29:20,526 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 271 predicate places. [2022-11-20 11:29:20,526 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 344 transitions, 4068 flow [2022-11-20 11:29:20,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:20,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:20,526 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:20,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-11-20 11:29:20,526 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:29:20,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:20,527 INFO L85 PathProgramCache]: Analyzing trace with hash -489428494, now seen corresponding path program 143 times [2022-11-20 11:29:20,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:20,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354554711] [2022-11-20 11:29:20,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:20,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:21,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:21,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:21,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354554711] [2022-11-20 11:29:21,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354554711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:21,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:21,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:29:21,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752978091] [2022-11-20 11:29:21,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:21,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:29:21,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:21,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:29:21,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:29:21,035 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:29:21,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 344 transitions, 4068 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:21,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:21,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:29:21,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:22,968 INFO L130 PetriNetUnfolder]: 362/986 cut-off events. [2022-11-20 11:29:22,968 INFO L131 PetriNetUnfolder]: For 14888/14888 co-relation queries the response was YES. [2022-11-20 11:29:22,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7466 conditions, 986 events. 362/986 cut-off events. For 14888/14888 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5491 event pairs, 57 based on Foata normal form. 1/983 useless extension candidates. Maximal degree in co-relation 7336. Up to 656 conditions per place. [2022-11-20 11:29:22,979 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 228 selfloop transitions, 114 changer transitions 33/414 dead transitions. [2022-11-20 11:29:22,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 414 transitions, 5805 flow [2022-11-20 11:29:22,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:29:22,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:29:22,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1959 transitions. [2022-11-20 11:29:22,982 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5632547441058079 [2022-11-20 11:29:22,982 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1959 transitions. [2022-11-20 11:29:22,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1959 transitions. [2022-11-20 11:29:22,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:22,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1959 transitions. [2022-11-20 11:29:22,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.945945945945944) internal successors, (1959), 37 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:22,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:22,986 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:22,986 INFO L175 Difference]: Start difference. First operand has 359 places, 344 transitions, 4068 flow. Second operand 37 states and 1959 transitions. [2022-11-20 11:29:22,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 414 transitions, 5805 flow [2022-11-20 11:29:23,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 414 transitions, 5529 flow, removed 65 selfloop flow, removed 31 redundant places. [2022-11-20 11:29:23,063 INFO L231 Difference]: Finished difference. Result has 369 places, 361 transitions, 4508 flow [2022-11-20 11:29:23,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3850, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4508, PETRI_PLACES=369, PETRI_TRANSITIONS=361} [2022-11-20 11:29:23,064 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 281 predicate places. [2022-11-20 11:29:23,064 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 361 transitions, 4508 flow [2022-11-20 11:29:23,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:23,064 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:23,065 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:23,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-11-20 11:29:23,065 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:29:23,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:23,065 INFO L85 PathProgramCache]: Analyzing trace with hash -691042608, now seen corresponding path program 144 times [2022-11-20 11:29:23,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:23,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008326238] [2022-11-20 11:29:23,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:23,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:23,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:23,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008326238] [2022-11-20 11:29:23,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008326238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:23,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:23,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:29:23,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600192284] [2022-11-20 11:29:23,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:23,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:29:23,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:23,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:29:23,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:29:23,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:29:23,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 361 transitions, 4508 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:23,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:23,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:29:23,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:25,381 INFO L130 PetriNetUnfolder]: 353/1010 cut-off events. [2022-11-20 11:29:25,381 INFO L131 PetriNetUnfolder]: For 14351/14351 co-relation queries the response was YES. [2022-11-20 11:29:25,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7486 conditions, 1010 events. 353/1010 cut-off events. For 14351/14351 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5753 event pairs, 67 based on Foata normal form. 1/1008 useless extension candidates. Maximal degree in co-relation 7353. Up to 648 conditions per place. [2022-11-20 11:29:25,396 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 226 selfloop transitions, 98 changer transitions 43/406 dead transitions. [2022-11-20 11:29:25,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 406 transitions, 5750 flow [2022-11-20 11:29:25,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:29:25,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:29:25,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1805 transitions. [2022-11-20 11:29:25,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5647684605757196 [2022-11-20 11:29:25,399 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1805 transitions. [2022-11-20 11:29:25,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1805 transitions. [2022-11-20 11:29:25,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:25,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1805 transitions. [2022-11-20 11:29:25,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.088235294117645) internal successors, (1805), 34 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:25,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:25,403 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:25,403 INFO L175 Difference]: Start difference. First operand has 369 places, 361 transitions, 4508 flow. Second operand 34 states and 1805 transitions. [2022-11-20 11:29:25,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 406 transitions, 5750 flow [2022-11-20 11:29:25,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 406 transitions, 5417 flow, removed 98 selfloop flow, removed 28 redundant places. [2022-11-20 11:29:25,497 INFO L231 Difference]: Finished difference. Result has 376 places, 345 transitions, 4276 flow [2022-11-20 11:29:25,497 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4211, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4276, PETRI_PLACES=376, PETRI_TRANSITIONS=345} [2022-11-20 11:29:25,497 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 288 predicate places. [2022-11-20 11:29:25,497 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 345 transitions, 4276 flow [2022-11-20 11:29:25,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:25,498 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:25,498 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:25,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-11-20 11:29:25,499 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:29:25,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:25,499 INFO L85 PathProgramCache]: Analyzing trace with hash -2062737244, now seen corresponding path program 145 times [2022-11-20 11:29:25,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:25,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436713187] [2022-11-20 11:29:25,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:25,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:26,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:26,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:26,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436713187] [2022-11-20 11:29:26,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436713187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:26,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:26,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:29:26,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024346434] [2022-11-20 11:29:26,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:26,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:29:26,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:26,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:29:26,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:29:26,179 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:29:26,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 345 transitions, 4276 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:26,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:26,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:29:26,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:29,011 INFO L130 PetriNetUnfolder]: 421/1179 cut-off events. [2022-11-20 11:29:29,011 INFO L131 PetriNetUnfolder]: For 18745/18745 co-relation queries the response was YES. [2022-11-20 11:29:29,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9027 conditions, 1179 events. 421/1179 cut-off events. For 18745/18745 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 6975 event pairs, 66 based on Foata normal form. 1/1177 useless extension candidates. Maximal degree in co-relation 8891. Up to 667 conditions per place. [2022-11-20 11:29:29,029 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 241 selfloop transitions, 218 changer transitions 21/519 dead transitions. [2022-11-20 11:29:29,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 519 transitions, 7845 flow [2022-11-20 11:29:29,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-20 11:29:29,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-11-20 11:29:29,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2784 transitions. [2022-11-20 11:29:29,033 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5588117221999197 [2022-11-20 11:29:29,033 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 2784 transitions. [2022-11-20 11:29:29,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 2784 transitions. [2022-11-20 11:29:29,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:29,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 2784 transitions. [2022-11-20 11:29:29,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 52.528301886792455) internal successors, (2784), 53 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:29,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 94.0) internal successors, (5076), 54 states have internal predecessors, (5076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:29,039 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 94.0) internal successors, (5076), 54 states have internal predecessors, (5076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:29,039 INFO L175 Difference]: Start difference. First operand has 376 places, 345 transitions, 4276 flow. Second operand 53 states and 2784 transitions. [2022-11-20 11:29:29,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 519 transitions, 7845 flow [2022-11-20 11:29:29,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 519 transitions, 7400 flow, removed 71 selfloop flow, removed 37 redundant places. [2022-11-20 11:29:29,162 INFO L231 Difference]: Finished difference. Result has 396 places, 471 transitions, 6615 flow [2022-11-20 11:29:29,163 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3940, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=6615, PETRI_PLACES=396, PETRI_TRANSITIONS=471} [2022-11-20 11:29:29,163 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 308 predicate places. [2022-11-20 11:29:29,163 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 471 transitions, 6615 flow [2022-11-20 11:29:29,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:29,163 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:29,163 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:29,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-11-20 11:29:29,164 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:29:29,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:29,164 INFO L85 PathProgramCache]: Analyzing trace with hash -58120972, now seen corresponding path program 146 times [2022-11-20 11:29:29,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:29,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360134558] [2022-11-20 11:29:29,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:29,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:29,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:29,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:29,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360134558] [2022-11-20 11:29:29,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360134558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:29,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:29,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:29:29,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55155964] [2022-11-20 11:29:29,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:29,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:29:29,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:29,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:29:29,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:29:29,795 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:29:29,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 471 transitions, 6615 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:29,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:29,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:29:29,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:32,174 INFO L130 PetriNetUnfolder]: 465/1301 cut-off events. [2022-11-20 11:29:32,174 INFO L131 PetriNetUnfolder]: For 25037/25037 co-relation queries the response was YES. [2022-11-20 11:29:32,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10601 conditions, 1301 events. 465/1301 cut-off events. For 25037/25037 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7944 event pairs, 49 based on Foata normal form. 1/1299 useless extension candidates. Maximal degree in co-relation 10460. Up to 915 conditions per place. [2022-11-20 11:29:32,199 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 398 selfloop transitions, 110 changer transitions 21/568 dead transitions. [2022-11-20 11:29:32,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 568 transitions, 9368 flow [2022-11-20 11:29:32,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 11:29:32,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-20 11:29:32,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2128 transitions. [2022-11-20 11:29:32,202 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5659574468085107 [2022-11-20 11:29:32,203 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2128 transitions. [2022-11-20 11:29:32,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2128 transitions. [2022-11-20 11:29:32,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:32,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2128 transitions. [2022-11-20 11:29:32,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.2) internal successors, (2128), 40 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:32,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:32,207 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:32,207 INFO L175 Difference]: Start difference. First operand has 396 places, 471 transitions, 6615 flow. Second operand 40 states and 2128 transitions. [2022-11-20 11:29:32,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 568 transitions, 9368 flow [2022-11-20 11:29:32,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 568 transitions, 8366 flow, removed 434 selfloop flow, removed 22 redundant places. [2022-11-20 11:29:32,406 INFO L231 Difference]: Finished difference. Result has 416 places, 525 transitions, 7065 flow [2022-11-20 11:29:32,407 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5649, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=7065, PETRI_PLACES=416, PETRI_TRANSITIONS=525} [2022-11-20 11:29:32,407 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 328 predicate places. [2022-11-20 11:29:32,407 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 525 transitions, 7065 flow [2022-11-20 11:29:32,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:32,407 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:32,407 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:32,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-11-20 11:29:32,408 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:29:32,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:32,408 INFO L85 PathProgramCache]: Analyzing trace with hash -865237668, now seen corresponding path program 147 times [2022-11-20 11:29:32,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:32,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409191885] [2022-11-20 11:29:32,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:32,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:32,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:32,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:32,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409191885] [2022-11-20 11:29:32,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409191885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:32,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:32,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:29:32,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458809300] [2022-11-20 11:29:32,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:32,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:29:32,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:32,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:29:32,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:29:32,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:29:32,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 525 transitions, 7065 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:32,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:32,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:29:32,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:35,364 INFO L130 PetriNetUnfolder]: 470/1318 cut-off events. [2022-11-20 11:29:35,364 INFO L131 PetriNetUnfolder]: For 26049/26049 co-relation queries the response was YES. [2022-11-20 11:29:35,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10593 conditions, 1318 events. 470/1318 cut-off events. For 26049/26049 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8221 event pairs, 60 based on Foata normal form. 1/1316 useless extension candidates. Maximal degree in co-relation 10447. Up to 845 conditions per place. [2022-11-20 11:29:35,387 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 369 selfloop transitions, 146 changer transitions 34/588 dead transitions. [2022-11-20 11:29:35,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 588 transitions, 9071 flow [2022-11-20 11:29:35,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 11:29:35,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-20 11:29:35,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2122 transitions. [2022-11-20 11:29:35,390 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5643617021276596 [2022-11-20 11:29:35,390 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2122 transitions. [2022-11-20 11:29:35,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2122 transitions. [2022-11-20 11:29:35,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:35,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2122 transitions. [2022-11-20 11:29:35,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.05) internal successors, (2122), 40 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:35,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:35,395 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:35,395 INFO L175 Difference]: Start difference. First operand has 416 places, 525 transitions, 7065 flow. Second operand 40 states and 2122 transitions. [2022-11-20 11:29:35,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 588 transitions, 9071 flow [2022-11-20 11:29:35,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 588 transitions, 8141 flow, removed 440 selfloop flow, removed 13 redundant places. [2022-11-20 11:29:35,596 INFO L231 Difference]: Finished difference. Result has 446 places, 528 transitions, 6562 flow [2022-11-20 11:29:35,597 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6139, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=6562, PETRI_PLACES=446, PETRI_TRANSITIONS=528} [2022-11-20 11:29:35,597 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 358 predicate places. [2022-11-20 11:29:35,597 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 528 transitions, 6562 flow [2022-11-20 11:29:35,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:35,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:35,598 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:35,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-11-20 11:29:35,598 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:29:35,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:35,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1849103222, now seen corresponding path program 148 times [2022-11-20 11:29:35,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:35,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690068296] [2022-11-20 11:29:35,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:35,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:36,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:36,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:36,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690068296] [2022-11-20 11:29:36,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690068296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:36,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:36,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:29:36,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661047450] [2022-11-20 11:29:36,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:36,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:29:36,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:36,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:29:36,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:29:36,200 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:29:36,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 528 transitions, 6562 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:36,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:36,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:29:36,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:38,675 INFO L130 PetriNetUnfolder]: 506/1429 cut-off events. [2022-11-20 11:29:38,675 INFO L131 PetriNetUnfolder]: For 30041/30041 co-relation queries the response was YES. [2022-11-20 11:29:38,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11328 conditions, 1429 events. 506/1429 cut-off events. For 30041/30041 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 9130 event pairs, 54 based on Foata normal form. 1/1427 useless extension candidates. Maximal degree in co-relation 11175. Up to 985 conditions per place. [2022-11-20 11:29:38,702 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 445 selfloop transitions, 133 changer transitions 21/638 dead transitions. [2022-11-20 11:29:38,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 638 transitions, 9595 flow [2022-11-20 11:29:38,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:29:38,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:29:38,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1974 transitions. [2022-11-20 11:29:38,705 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2022-11-20 11:29:38,705 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1974 transitions. [2022-11-20 11:29:38,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1974 transitions. [2022-11-20 11:29:38,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:38,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1974 transitions. [2022-11-20 11:29:38,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 53.351351351351354) internal successors, (1974), 37 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:38,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:38,710 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:38,710 INFO L175 Difference]: Start difference. First operand has 446 places, 528 transitions, 6562 flow. Second operand 37 states and 1974 transitions. [2022-11-20 11:29:38,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 638 transitions, 9595 flow [2022-11-20 11:29:38,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 638 transitions, 9245 flow, removed 76 selfloop flow, removed 35 redundant places. [2022-11-20 11:29:38,940 INFO L231 Difference]: Finished difference. Result has 457 places, 589 transitions, 7835 flow [2022-11-20 11:29:38,940 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6270, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7835, PETRI_PLACES=457, PETRI_TRANSITIONS=589} [2022-11-20 11:29:38,940 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 369 predicate places. [2022-11-20 11:29:38,941 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 589 transitions, 7835 flow [2022-11-20 11:29:38,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:38,941 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:38,941 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:38,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-11-20 11:29:38,941 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:29:38,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:38,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1241357250, now seen corresponding path program 149 times [2022-11-20 11:29:38,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:38,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631092463] [2022-11-20 11:29:38,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:38,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:39,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:39,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:39,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631092463] [2022-11-20 11:29:39,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631092463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:39,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:39,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-20 11:29:39,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178302528] [2022-11-20 11:29:39,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:39,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 11:29:39,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:39,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 11:29:39,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:29:39,515 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:29:39,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 589 transitions, 7835 flow. Second operand has 17 states, 17 states have (on average 51.35294117647059) internal successors, (873), 17 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:39,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:39,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:29:39,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:41,538 INFO L130 PetriNetUnfolder]: 511/1456 cut-off events. [2022-11-20 11:29:41,538 INFO L131 PetriNetUnfolder]: For 32978/32978 co-relation queries the response was YES. [2022-11-20 11:29:41,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11850 conditions, 1456 events. 511/1456 cut-off events. For 32978/32978 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9441 event pairs, 60 based on Foata normal form. 1/1454 useless extension candidates. Maximal degree in co-relation 11687. Up to 1043 conditions per place. [2022-11-20 11:29:41,565 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 482 selfloop transitions, 92 changer transitions 29/642 dead transitions. [2022-11-20 11:29:41,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 642 transitions, 9872 flow [2022-11-20 11:29:41,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 11:29:41,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-20 11:29:41,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1514 transitions. [2022-11-20 11:29:41,568 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5752279635258358 [2022-11-20 11:29:41,568 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1514 transitions. [2022-11-20 11:29:41,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1514 transitions. [2022-11-20 11:29:41,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:41,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1514 transitions. [2022-11-20 11:29:41,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 54.07142857142857) internal successors, (1514), 28 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:41,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 94.0) internal successors, (2726), 29 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:41,572 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 94.0) internal successors, (2726), 29 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:41,572 INFO L175 Difference]: Start difference. First operand has 457 places, 589 transitions, 7835 flow. Second operand 28 states and 1514 transitions. [2022-11-20 11:29:41,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 642 transitions, 9872 flow [2022-11-20 11:29:41,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 642 transitions, 9183 flow, removed 306 selfloop flow, removed 15 redundant places. [2022-11-20 11:29:41,860 INFO L231 Difference]: Finished difference. Result has 473 places, 594 transitions, 7590 flow [2022-11-20 11:29:41,861 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7206, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7590, PETRI_PLACES=473, PETRI_TRANSITIONS=594} [2022-11-20 11:29:41,861 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 385 predicate places. [2022-11-20 11:29:41,861 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 594 transitions, 7590 flow [2022-11-20 11:29:41,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 51.35294117647059) internal successors, (873), 17 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:41,862 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:41,862 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:41,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-11-20 11:29:41,863 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:29:41,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:41,863 INFO L85 PathProgramCache]: Analyzing trace with hash -963427796, now seen corresponding path program 150 times [2022-11-20 11:29:41,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:41,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55001045] [2022-11-20 11:29:41,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:41,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:42,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:42,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55001045] [2022-11-20 11:29:42,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55001045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:42,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:42,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:29:42,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908782688] [2022-11-20 11:29:42,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:42,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:29:42,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:42,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:29:42,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:29:42,413 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:29:42,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 594 transitions, 7590 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:42,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:42,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:29:42,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:44,740 INFO L130 PetriNetUnfolder]: 515/1484 cut-off events. [2022-11-20 11:29:44,740 INFO L131 PetriNetUnfolder]: For 33604/33604 co-relation queries the response was YES. [2022-11-20 11:29:44,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11954 conditions, 1484 events. 515/1484 cut-off events. For 33604/33604 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9682 event pairs, 60 based on Foata normal form. 1/1482 useless extension candidates. Maximal degree in co-relation 11784. Up to 1050 conditions per place. [2022-11-20 11:29:44,777 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 485 selfloop transitions, 103 changer transitions 29/656 dead transitions. [2022-11-20 11:29:44,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 656 transitions, 9955 flow [2022-11-20 11:29:44,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:29:44,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:29:44,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1717 transitions. [2022-11-20 11:29:44,780 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.570811170212766 [2022-11-20 11:29:44,780 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1717 transitions. [2022-11-20 11:29:44,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1717 transitions. [2022-11-20 11:29:44,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:44,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1717 transitions. [2022-11-20 11:29:44,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.65625) internal successors, (1717), 32 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:44,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:44,786 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:44,787 INFO L175 Difference]: Start difference. First operand has 473 places, 594 transitions, 7590 flow. Second operand 32 states and 1717 transitions. [2022-11-20 11:29:44,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 656 transitions, 9955 flow [2022-11-20 11:29:45,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 656 transitions, 9572 flow, removed 143 selfloop flow, removed 21 redundant places. [2022-11-20 11:29:45,104 INFO L231 Difference]: Finished difference. Result has 486 places, 607 transitions, 7926 flow [2022-11-20 11:29:45,104 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7355, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=7926, PETRI_PLACES=486, PETRI_TRANSITIONS=607} [2022-11-20 11:29:45,105 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 398 predicate places. [2022-11-20 11:29:45,105 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 607 transitions, 7926 flow [2022-11-20 11:29:45,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:45,106 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:45,106 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:45,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-11-20 11:29:45,106 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:29:45,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:45,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1575504402, now seen corresponding path program 151 times [2022-11-20 11:29:45,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:45,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785418007] [2022-11-20 11:29:45,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:45,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:45,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:45,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785418007] [2022-11-20 11:29:45,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785418007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:45,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:45,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:29:45,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364035707] [2022-11-20 11:29:45,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:45,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:29:45,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:45,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:29:45,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:29:45,864 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:29:45,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 607 transitions, 7926 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:45,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:45,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:29:45,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:48,749 INFO L130 PetriNetUnfolder]: 550/1579 cut-off events. [2022-11-20 11:29:48,749 INFO L131 PetriNetUnfolder]: For 39355/39355 co-relation queries the response was YES. [2022-11-20 11:29:48,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12991 conditions, 1579 events. 550/1579 cut-off events. For 39355/39355 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 10501 event pairs, 48 based on Foata normal form. 1/1577 useless extension candidates. Maximal degree in co-relation 12817. Up to 871 conditions per place. [2022-11-20 11:29:48,783 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 344 selfloop transitions, 307 changer transitions 23/713 dead transitions. [2022-11-20 11:29:48,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 713 transitions, 11307 flow [2022-11-20 11:29:48,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-20 11:29:48,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-20 11:29:48,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2483 transitions. [2022-11-20 11:29:48,786 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5620190131281123 [2022-11-20 11:29:48,786 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 2483 transitions. [2022-11-20 11:29:48,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 2483 transitions. [2022-11-20 11:29:48,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:48,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 2483 transitions. [2022-11-20 11:29:48,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 52.829787234042556) internal successors, (2483), 47 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:48,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 94.0) internal successors, (4512), 48 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:48,796 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 94.0) internal successors, (4512), 48 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:48,796 INFO L175 Difference]: Start difference. First operand has 486 places, 607 transitions, 7926 flow. Second operand 47 states and 2483 transitions. [2022-11-20 11:29:48,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 713 transitions, 11307 flow [2022-11-20 11:29:49,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 713 transitions, 10921 flow, removed 121 selfloop flow, removed 26 redundant places. [2022-11-20 11:29:49,168 INFO L231 Difference]: Finished difference. Result has 512 places, 661 transitions, 9695 flow [2022-11-20 11:29:49,168 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7612, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=9695, PETRI_PLACES=512, PETRI_TRANSITIONS=661} [2022-11-20 11:29:49,169 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 424 predicate places. [2022-11-20 11:29:49,169 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 661 transitions, 9695 flow [2022-11-20 11:29:49,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:49,169 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:49,169 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:49,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-11-20 11:29:49,169 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:29:49,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:49,170 INFO L85 PathProgramCache]: Analyzing trace with hash 324654396, now seen corresponding path program 152 times [2022-11-20 11:29:49,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:49,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299763459] [2022-11-20 11:29:49,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:49,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:49,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:49,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:49,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299763459] [2022-11-20 11:29:49,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299763459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:49,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:49,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:29:49,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970394727] [2022-11-20 11:29:49,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:49,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:29:49,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:49,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:29:49,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:29:49,750 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:29:49,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 661 transitions, 9695 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:49,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:49,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:29:49,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:52,281 INFO L130 PetriNetUnfolder]: 555/1593 cut-off events. [2022-11-20 11:29:52,281 INFO L131 PetriNetUnfolder]: For 44086/44086 co-relation queries the response was YES. [2022-11-20 11:29:52,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13839 conditions, 1593 events. 555/1593 cut-off events. For 44086/44086 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 10646 event pairs, 65 based on Foata normal form. 1/1591 useless extension candidates. Maximal degree in co-relation 13659. Up to 1146 conditions per place. [2022-11-20 11:29:52,314 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 543 selfloop transitions, 95 changer transitions 35/712 dead transitions. [2022-11-20 11:29:52,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 712 transitions, 11776 flow [2022-11-20 11:29:52,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:29:52,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:29:52,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1814 transitions. [2022-11-20 11:29:52,317 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.567584480600751 [2022-11-20 11:29:52,317 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1814 transitions. [2022-11-20 11:29:52,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1814 transitions. [2022-11-20 11:29:52,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:52,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1814 transitions. [2022-11-20 11:29:52,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.35294117647059) internal successors, (1814), 34 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:52,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:52,322 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:52,322 INFO L175 Difference]: Start difference. First operand has 512 places, 661 transitions, 9695 flow. Second operand 34 states and 1814 transitions. [2022-11-20 11:29:52,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 712 transitions, 11776 flow [2022-11-20 11:29:52,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 712 transitions, 11077 flow, removed 270 selfloop flow, removed 28 redundant places. [2022-11-20 11:29:52,707 INFO L231 Difference]: Finished difference. Result has 525 places, 661 transitions, 9283 flow [2022-11-20 11:29:52,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9008, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=9283, PETRI_PLACES=525, PETRI_TRANSITIONS=661} [2022-11-20 11:29:52,708 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 437 predicate places. [2022-11-20 11:29:52,708 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 661 transitions, 9283 flow [2022-11-20 11:29:52,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:52,708 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:52,708 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:52,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-11-20 11:29:52,708 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:29:52,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:52,709 INFO L85 PathProgramCache]: Analyzing trace with hash 832460752, now seen corresponding path program 153 times [2022-11-20 11:29:52,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:52,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042453124] [2022-11-20 11:29:52,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:52,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:53,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:53,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:53,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042453124] [2022-11-20 11:29:53,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042453124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:53,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:53,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:29:53,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409083808] [2022-11-20 11:29:53,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:53,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:29:53,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:53,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:29:53,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:29:53,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:29:53,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 661 transitions, 9283 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:53,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:53,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:29:53,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:55,821 INFO L130 PetriNetUnfolder]: 581/1656 cut-off events. [2022-11-20 11:29:55,821 INFO L131 PetriNetUnfolder]: For 44913/44913 co-relation queries the response was YES. [2022-11-20 11:29:55,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14314 conditions, 1656 events. 581/1656 cut-off events. For 44913/44913 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 11201 event pairs, 49 based on Foata normal form. 1/1654 useless extension candidates. Maximal degree in co-relation 14124. Up to 1144 conditions per place. [2022-11-20 11:29:55,855 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 544 selfloop transitions, 145 changer transitions 32/760 dead transitions. [2022-11-20 11:29:55,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 760 transitions, 12455 flow [2022-11-20 11:29:55,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:29:55,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:29:55,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1872 transitions. [2022-11-20 11:29:55,858 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5689969604863222 [2022-11-20 11:29:55,858 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1872 transitions. [2022-11-20 11:29:55,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1872 transitions. [2022-11-20 11:29:55,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:55,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1872 transitions. [2022-11-20 11:29:55,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.48571428571429) internal successors, (1872), 35 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:55,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:55,862 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:55,862 INFO L175 Difference]: Start difference. First operand has 525 places, 661 transitions, 9283 flow. Second operand 35 states and 1872 transitions. [2022-11-20 11:29:55,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 760 transitions, 12455 flow [2022-11-20 11:29:56,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 760 transitions, 12096 flow, removed 51 selfloop flow, removed 34 redundant places. [2022-11-20 11:29:56,259 INFO L231 Difference]: Finished difference. Result has 533 places, 702 transitions, 10208 flow [2022-11-20 11:29:56,259 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8993, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=10208, PETRI_PLACES=533, PETRI_TRANSITIONS=702} [2022-11-20 11:29:56,260 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 445 predicate places. [2022-11-20 11:29:56,260 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 702 transitions, 10208 flow [2022-11-20 11:29:56,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:56,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:29:56,260 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:56,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-11-20 11:29:56,260 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:29:56,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:56,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1717560350, now seen corresponding path program 154 times [2022-11-20 11:29:56,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:56,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770388529] [2022-11-20 11:29:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:56,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:56,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:56,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770388529] [2022-11-20 11:29:56,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770388529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:56,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:56,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:29:56,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891928010] [2022-11-20 11:29:56,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:56,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:29:56,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:56,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:29:56,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:29:56,847 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:29:56,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 702 transitions, 10208 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:56,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:29:56,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:29:56,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:29:59,562 INFO L130 PetriNetUnfolder]: 580/1668 cut-off events. [2022-11-20 11:29:59,562 INFO L131 PetriNetUnfolder]: For 45915/45915 co-relation queries the response was YES. [2022-11-20 11:29:59,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14509 conditions, 1668 events. 580/1668 cut-off events. For 45915/45915 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 11355 event pairs, 61 based on Foata normal form. 1/1666 useless extension candidates. Maximal degree in co-relation 14315. Up to 1204 conditions per place. [2022-11-20 11:29:59,599 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 574 selfloop transitions, 110 changer transitions 33/756 dead transitions. [2022-11-20 11:29:59,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 756 transitions, 12613 flow [2022-11-20 11:29:59,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:29:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 11:29:59,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1907 transitions. [2022-11-20 11:29:59,602 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5635342789598109 [2022-11-20 11:29:59,603 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1907 transitions. [2022-11-20 11:29:59,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1907 transitions. [2022-11-20 11:29:59,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:29:59,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1907 transitions. [2022-11-20 11:29:59,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.97222222222222) internal successors, (1907), 36 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:59,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:59,608 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:59,608 INFO L175 Difference]: Start difference. First operand has 533 places, 702 transitions, 10208 flow. Second operand 36 states and 1907 transitions. [2022-11-20 11:29:59,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 756 transitions, 12613 flow [2022-11-20 11:30:00,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 756 transitions, 12331 flow, removed 113 selfloop flow, removed 17 redundant places. [2022-11-20 11:30:00,132 INFO L231 Difference]: Finished difference. Result has 557 places, 705 transitions, 10417 flow [2022-11-20 11:30:00,132 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9960, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=10417, PETRI_PLACES=557, PETRI_TRANSITIONS=705} [2022-11-20 11:30:00,133 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 469 predicate places. [2022-11-20 11:30:00,133 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 705 transitions, 10417 flow [2022-11-20 11:30:00,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:00,133 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:30:00,133 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:00,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-11-20 11:30:00,133 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:30:00,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:00,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1883005044, now seen corresponding path program 155 times [2022-11-20 11:30:00,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:00,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312798679] [2022-11-20 11:30:00,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:00,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:00,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:00,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:00,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312798679] [2022-11-20 11:30:00,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312798679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:00,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:00,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:30:00,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031428839] [2022-11-20 11:30:00,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:00,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:30:00,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:00,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:30:00,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:30:00,698 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:30:00,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 705 transitions, 10417 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:00,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:30:00,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:30:00,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:30:03,577 INFO L130 PetriNetUnfolder]: 581/1665 cut-off events. [2022-11-20 11:30:03,577 INFO L131 PetriNetUnfolder]: For 44635/44635 co-relation queries the response was YES. [2022-11-20 11:30:03,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14575 conditions, 1665 events. 581/1665 cut-off events. For 44635/44635 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 11322 event pairs, 57 based on Foata normal form. 1/1663 useless extension candidates. Maximal degree in co-relation 14373. Up to 1155 conditions per place. [2022-11-20 11:30:03,615 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 547 selfloop transitions, 142 changer transitions 37/765 dead transitions. [2022-11-20 11:30:03,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 765 transitions, 12855 flow [2022-11-20 11:30:03,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 11:30:03,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 11:30:03,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2021 transitions. [2022-11-20 11:30:03,618 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5657894736842105 [2022-11-20 11:30:03,618 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2021 transitions. [2022-11-20 11:30:03,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2021 transitions. [2022-11-20 11:30:03,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:30:03,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2021 transitions. [2022-11-20 11:30:03,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 53.18421052631579) internal successors, (2021), 38 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:03,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:03,623 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:03,623 INFO L175 Difference]: Start difference. First operand has 557 places, 705 transitions, 10417 flow. Second operand 38 states and 2021 transitions. [2022-11-20 11:30:03,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 765 transitions, 12855 flow [2022-11-20 11:30:04,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 765 transitions, 12504 flow, removed 77 selfloop flow, removed 31 redundant places. [2022-11-20 11:30:04,051 INFO L231 Difference]: Finished difference. Result has 567 places, 709 transitions, 10604 flow [2022-11-20 11:30:04,052 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=10122, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10604, PETRI_PLACES=567, PETRI_TRANSITIONS=709} [2022-11-20 11:30:04,052 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 479 predicate places. [2022-11-20 11:30:04,052 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 709 transitions, 10604 flow [2022-11-20 11:30:04,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:04,053 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:30:04,053 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:04,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-11-20 11:30:04,053 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:30:04,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:04,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1794060984, now seen corresponding path program 156 times [2022-11-20 11:30:04,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:04,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329871938] [2022-11-20 11:30:04,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:04,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:04,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:04,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:04,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329871938] [2022-11-20 11:30:04,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329871938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:04,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:04,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:30:04,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441870418] [2022-11-20 11:30:04,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:04,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:30:04,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:04,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:30:04,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:30:04,654 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:30:04,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 709 transitions, 10604 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:04,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:30:04,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:30:04,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:30:07,523 INFO L130 PetriNetUnfolder]: 587/1695 cut-off events. [2022-11-20 11:30:07,523 INFO L131 PetriNetUnfolder]: For 45367/45367 co-relation queries the response was YES. [2022-11-20 11:30:07,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14892 conditions, 1695 events. 587/1695 cut-off events. For 45367/45367 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 11632 event pairs, 38 based on Foata normal form. 1/1693 useless extension candidates. Maximal degree in co-relation 14685. Up to 1047 conditions per place. [2022-11-20 11:30:07,564 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 469 selfloop transitions, 244 changer transitions 32/784 dead transitions. [2022-11-20 11:30:07,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 784 transitions, 13541 flow [2022-11-20 11:30:07,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-20 11:30:07,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-20 11:30:07,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2225 transitions. [2022-11-20 11:30:07,566 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5635764944275583 [2022-11-20 11:30:07,566 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2225 transitions. [2022-11-20 11:30:07,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2225 transitions. [2022-11-20 11:30:07,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:30:07,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2225 transitions. [2022-11-20 11:30:07,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 52.976190476190474) internal successors, (2225), 42 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:07,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:07,571 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:07,571 INFO L175 Difference]: Start difference. First operand has 567 places, 709 transitions, 10604 flow. Second operand 42 states and 2225 transitions. [2022-11-20 11:30:07,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 784 transitions, 13541 flow [2022-11-20 11:30:07,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 784 transitions, 13124 flow, removed 52 selfloop flow, removed 35 redundant places. [2022-11-20 11:30:07,999 INFO L231 Difference]: Finished difference. Result has 574 places, 729 transitions, 11368 flow [2022-11-20 11:30:07,999 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=10233, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=11368, PETRI_PLACES=574, PETRI_TRANSITIONS=729} [2022-11-20 11:30:07,999 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 486 predicate places. [2022-11-20 11:30:08,000 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 729 transitions, 11368 flow [2022-11-20 11:30:08,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:08,000 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:30:08,000 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:08,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-11-20 11:30:08,001 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:30:08,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:08,001 INFO L85 PathProgramCache]: Analyzing trace with hash -51062402, now seen corresponding path program 157 times [2022-11-20 11:30:08,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:08,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560562391] [2022-11-20 11:30:08,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:08,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:08,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:08,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:08,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560562391] [2022-11-20 11:30:08,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560562391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:08,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:08,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:30:08,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807645437] [2022-11-20 11:30:08,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:08,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:30:08,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:08,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:30:08,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:30:08,627 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:30:08,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 729 transitions, 11368 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:08,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:30:08,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:30:08,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:30:11,679 INFO L130 PetriNetUnfolder]: 586/1703 cut-off events. [2022-11-20 11:30:11,679 INFO L131 PetriNetUnfolder]: For 46486/46486 co-relation queries the response was YES. [2022-11-20 11:30:11,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15160 conditions, 1703 events. 586/1703 cut-off events. For 46486/46486 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11780 event pairs, 39 based on Foata normal form. 1/1701 useless extension candidates. Maximal degree in co-relation 14955. Up to 1065 conditions per place. [2022-11-20 11:30:11,716 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 472 selfloop transitions, 236 changer transitions 37/784 dead transitions. [2022-11-20 11:30:11,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 784 transitions, 13759 flow [2022-11-20 11:30:11,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 11:30:11,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-20 11:30:11,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2374 transitions. [2022-11-20 11:30:11,719 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5612293144208038 [2022-11-20 11:30:11,719 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2374 transitions. [2022-11-20 11:30:11,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2374 transitions. [2022-11-20 11:30:11,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:30:11,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2374 transitions. [2022-11-20 11:30:11,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 52.75555555555555) internal successors, (2374), 45 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:11,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:11,726 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 94.0) internal successors, (4324), 46 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:11,726 INFO L175 Difference]: Start difference. First operand has 574 places, 729 transitions, 11368 flow. Second operand 45 states and 2374 transitions. [2022-11-20 11:30:11,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 784 transitions, 13759 flow [2022-11-20 11:30:12,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 784 transitions, 13244 flow, removed 134 selfloop flow, removed 36 redundant places. [2022-11-20 11:30:12,221 INFO L231 Difference]: Finished difference. Result has 590 places, 733 transitions, 11642 flow [2022-11-20 11:30:12,222 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=10910, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=11642, PETRI_PLACES=590, PETRI_TRANSITIONS=733} [2022-11-20 11:30:12,222 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 502 predicate places. [2022-11-20 11:30:12,222 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 733 transitions, 11642 flow [2022-11-20 11:30:12,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:12,222 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:30:12,223 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:12,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-11-20 11:30:12,223 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:30:12,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:12,223 INFO L85 PathProgramCache]: Analyzing trace with hash 48180748, now seen corresponding path program 158 times [2022-11-20 11:30:12,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:12,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029809257] [2022-11-20 11:30:12,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:12,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:12,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:12,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:12,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029809257] [2022-11-20 11:30:12,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029809257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:12,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:12,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:30:12,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090829587] [2022-11-20 11:30:12,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:12,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:30:12,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:12,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:30:12,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:30:12,795 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:30:12,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 733 transitions, 11642 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:12,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:30:12,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:30:12,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:30:15,644 INFO L130 PetriNetUnfolder]: 591/1684 cut-off events. [2022-11-20 11:30:15,644 INFO L131 PetriNetUnfolder]: For 44808/44808 co-relation queries the response was YES. [2022-11-20 11:30:15,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15468 conditions, 1684 events. 591/1684 cut-off events. For 44808/44808 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 11576 event pairs, 58 based on Foata normal form. 1/1681 useless extension candidates. Maximal degree in co-relation 15255. Up to 1226 conditions per place. [2022-11-20 11:30:15,679 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 584 selfloop transitions, 142 changer transitions 32/797 dead transitions. [2022-11-20 11:30:15,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 797 transitions, 14519 flow [2022-11-20 11:30:15,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 11:30:15,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 11:30:15,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2013 transitions. [2022-11-20 11:30:15,682 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5635498320268757 [2022-11-20 11:30:15,682 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2013 transitions. [2022-11-20 11:30:15,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2013 transitions. [2022-11-20 11:30:15,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:30:15,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2013 transitions. [2022-11-20 11:30:15,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.973684210526315) internal successors, (2013), 38 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:15,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:15,687 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:15,687 INFO L175 Difference]: Start difference. First operand has 590 places, 733 transitions, 11642 flow. Second operand 38 states and 2013 transitions. [2022-11-20 11:30:15,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 797 transitions, 14519 flow [2022-11-20 11:30:16,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 797 transitions, 13834 flow, removed 63 selfloop flow, removed 43 redundant places. [2022-11-20 11:30:16,193 INFO L231 Difference]: Finished difference. Result has 588 places, 749 transitions, 11884 flow [2022-11-20 11:30:16,193 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11045, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=11884, PETRI_PLACES=588, PETRI_TRANSITIONS=749} [2022-11-20 11:30:16,193 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 500 predicate places. [2022-11-20 11:30:16,193 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 749 transitions, 11884 flow [2022-11-20 11:30:16,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:16,194 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:30:16,194 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:16,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-11-20 11:30:16,194 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:30:16,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:16,194 INFO L85 PathProgramCache]: Analyzing trace with hash -47759764, now seen corresponding path program 159 times [2022-11-20 11:30:16,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:16,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389027813] [2022-11-20 11:30:16,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:16,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:16,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:16,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:16,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389027813] [2022-11-20 11:30:16,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389027813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:16,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:16,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:30:16,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132678068] [2022-11-20 11:30:16,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:16,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:30:16,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:16,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:30:16,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:30:16,719 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:30:16,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 749 transitions, 11884 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:16,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:30:16,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:30:16,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:30:19,120 INFO L130 PetriNetUnfolder]: 587/1707 cut-off events. [2022-11-20 11:30:19,120 INFO L131 PetriNetUnfolder]: For 44607/44607 co-relation queries the response was YES. [2022-11-20 11:30:19,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15317 conditions, 1707 events. 587/1707 cut-off events. For 44607/44607 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 11854 event pairs, 56 based on Foata normal form. 1/1705 useless extension candidates. Maximal degree in co-relation 15103. Up to 1268 conditions per place. [2022-11-20 11:30:19,161 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 631 selfloop transitions, 89 changer transitions 35/794 dead transitions. [2022-11-20 11:30:19,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 794 transitions, 14174 flow [2022-11-20 11:30:19,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:30:19,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:30:19,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1607 transitions. [2022-11-20 11:30:19,164 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5698581560283688 [2022-11-20 11:30:19,164 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1607 transitions. [2022-11-20 11:30:19,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1607 transitions. [2022-11-20 11:30:19,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:30:19,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1607 transitions. [2022-11-20 11:30:19,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.56666666666667) internal successors, (1607), 30 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:19,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:19,168 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:19,168 INFO L175 Difference]: Start difference. First operand has 588 places, 749 transitions, 11884 flow. Second operand 30 states and 1607 transitions. [2022-11-20 11:30:19,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 794 transitions, 14174 flow [2022-11-20 11:30:19,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 794 transitions, 13655 flow, removed 182 selfloop flow, removed 29 redundant places. [2022-11-20 11:30:19,844 INFO L231 Difference]: Finished difference. Result has 591 places, 745 transitions, 11713 flow [2022-11-20 11:30:19,844 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11515, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11713, PETRI_PLACES=591, PETRI_TRANSITIONS=745} [2022-11-20 11:30:19,845 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 503 predicate places. [2022-11-20 11:30:19,845 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 745 transitions, 11713 flow [2022-11-20 11:30:19,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:19,845 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:30:19,846 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:19,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-11-20 11:30:19,846 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:30:19,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:19,847 INFO L85 PathProgramCache]: Analyzing trace with hash -764338064, now seen corresponding path program 160 times [2022-11-20 11:30:19,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:19,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235649341] [2022-11-20 11:30:19,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:19,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:20,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:20,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:20,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235649341] [2022-11-20 11:30:20,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235649341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:20,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:20,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:30:20,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147958134] [2022-11-20 11:30:20,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:20,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:30:20,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:20,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:30:20,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:30:20,548 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:30:20,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 745 transitions, 11713 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:20,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:30:20,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:30:20,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:30:23,367 INFO L130 PetriNetUnfolder]: 605/1736 cut-off events. [2022-11-20 11:30:23,367 INFO L131 PetriNetUnfolder]: For 47801/47801 co-relation queries the response was YES. [2022-11-20 11:30:23,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15838 conditions, 1736 events. 605/1736 cut-off events. For 47801/47801 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 11996 event pairs, 41 based on Foata normal form. 1/1734 useless extension candidates. Maximal degree in co-relation 15620. Up to 1286 conditions per place. [2022-11-20 11:30:23,412 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 649 selfloop transitions, 113 changer transitions 20/821 dead transitions. [2022-11-20 11:30:23,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 821 transitions, 14842 flow [2022-11-20 11:30:23,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:30:23,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:30:23,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1821 transitions. [2022-11-20 11:30:23,415 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5697747183979975 [2022-11-20 11:30:23,415 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1821 transitions. [2022-11-20 11:30:23,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1821 transitions. [2022-11-20 11:30:23,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:30:23,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1821 transitions. [2022-11-20 11:30:23,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.55882352941177) internal successors, (1821), 34 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:23,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:23,419 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:23,419 INFO L175 Difference]: Start difference. First operand has 591 places, 745 transitions, 11713 flow. Second operand 34 states and 1821 transitions. [2022-11-20 11:30:23,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 821 transitions, 14842 flow [2022-11-20 11:30:24,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 821 transitions, 14518 flow, removed 47 selfloop flow, removed 28 redundant places. [2022-11-20 11:30:24,017 INFO L231 Difference]: Finished difference. Result has 593 places, 775 transitions, 12508 flow [2022-11-20 11:30:24,018 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11451, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=12508, PETRI_PLACES=593, PETRI_TRANSITIONS=775} [2022-11-20 11:30:24,018 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 505 predicate places. [2022-11-20 11:30:24,018 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 775 transitions, 12508 flow [2022-11-20 11:30:24,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:24,018 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:30:24,019 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:24,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-11-20 11:30:24,019 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:30:24,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:24,019 INFO L85 PathProgramCache]: Analyzing trace with hash -51073470, now seen corresponding path program 161 times [2022-11-20 11:30:24,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:24,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738935020] [2022-11-20 11:30:24,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:24,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:24,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:24,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:24,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738935020] [2022-11-20 11:30:24,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738935020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:24,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:24,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:30:24,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375695992] [2022-11-20 11:30:24,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:24,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:30:24,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:24,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:30:24,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:30:24,640 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:30:24,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 775 transitions, 12508 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:24,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:30:24,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:30:24,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:30:27,270 INFO L130 PetriNetUnfolder]: 608/1774 cut-off events. [2022-11-20 11:30:27,270 INFO L131 PetriNetUnfolder]: For 50672/50672 co-relation queries the response was YES. [2022-11-20 11:30:27,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16210 conditions, 1774 events. 608/1774 cut-off events. For 50672/50672 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 12500 event pairs, 61 based on Foata normal form. 1/1772 useless extension candidates. Maximal degree in co-relation 15996. Up to 1285 conditions per place. [2022-11-20 11:30:27,315 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 616 selfloop transitions, 126 changer transitions 35/816 dead transitions. [2022-11-20 11:30:27,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 816 transitions, 14686 flow [2022-11-20 11:30:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:30:27,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:30:27,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1859 transitions. [2022-11-20 11:30:27,318 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5650455927051672 [2022-11-20 11:30:27,318 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1859 transitions. [2022-11-20 11:30:27,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1859 transitions. [2022-11-20 11:30:27,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:30:27,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1859 transitions. [2022-11-20 11:30:27,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.114285714285714) internal successors, (1859), 35 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:27,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:27,322 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:27,322 INFO L175 Difference]: Start difference. First operand has 593 places, 775 transitions, 12508 flow. Second operand 35 states and 1859 transitions. [2022-11-20 11:30:27,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 816 transitions, 14686 flow [2022-11-20 11:30:27,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 816 transitions, 14114 flow, removed 247 selfloop flow, removed 14 redundant places. [2022-11-20 11:30:27,904 INFO L231 Difference]: Finished difference. Result has 617 places, 767 transitions, 12193 flow [2022-11-20 11:30:27,905 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11940, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=12193, PETRI_PLACES=617, PETRI_TRANSITIONS=767} [2022-11-20 11:30:27,905 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 529 predicate places. [2022-11-20 11:30:27,905 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 767 transitions, 12193 flow [2022-11-20 11:30:27,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:27,905 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:30:27,906 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:27,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-11-20 11:30:27,906 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:30:27,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:27,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2043720326, now seen corresponding path program 162 times [2022-11-20 11:30:27,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:27,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326788976] [2022-11-20 11:30:27,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:27,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:28,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:28,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326788976] [2022-11-20 11:30:28,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326788976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:28,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:28,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:30:28,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962681188] [2022-11-20 11:30:28,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:28,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:30:28,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:28,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:30:28,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:30:28,507 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:30:28,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 767 transitions, 12193 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:28,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:30:28,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:30:28,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:30:30,967 INFO L130 PetriNetUnfolder]: 600/1760 cut-off events. [2022-11-20 11:30:30,967 INFO L131 PetriNetUnfolder]: For 49803/49803 co-relation queries the response was YES. [2022-11-20 11:30:30,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15971 conditions, 1760 events. 600/1760 cut-off events. For 49803/49803 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 12319 event pairs, 66 based on Foata normal form. 1/1758 useless extension candidates. Maximal degree in co-relation 15748. Up to 1304 conditions per place. [2022-11-20 11:30:31,007 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 653 selfloop transitions, 100 changer transitions 22/814 dead transitions. [2022-11-20 11:30:31,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 814 transitions, 14396 flow [2022-11-20 11:30:31,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 11:30:31,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-20 11:30:31,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1555 transitions. [2022-11-20 11:30:31,009 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5704328686720469 [2022-11-20 11:30:31,010 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1555 transitions. [2022-11-20 11:30:31,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1555 transitions. [2022-11-20 11:30:31,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:30:31,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1555 transitions. [2022-11-20 11:30:31,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.62068965517241) internal successors, (1555), 29 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:31,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:31,013 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:31,013 INFO L175 Difference]: Start difference. First operand has 617 places, 767 transitions, 12193 flow. Second operand 29 states and 1555 transitions. [2022-11-20 11:30:31,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 814 transitions, 14396 flow [2022-11-20 11:30:31,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 814 transitions, 14038 flow, removed 21 selfloop flow, removed 36 redundant places. [2022-11-20 11:30:31,585 INFO L231 Difference]: Finished difference. Result has 606 places, 773 transitions, 12226 flow [2022-11-20 11:30:31,586 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11855, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=767, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=670, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=12226, PETRI_PLACES=606, PETRI_TRANSITIONS=773} [2022-11-20 11:30:31,586 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 518 predicate places. [2022-11-20 11:30:31,586 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 773 transitions, 12226 flow [2022-11-20 11:30:31,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:31,586 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:30:31,587 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:31,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-11-20 11:30:31,587 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:30:31,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:31,587 INFO L85 PathProgramCache]: Analyzing trace with hash -664749954, now seen corresponding path program 163 times [2022-11-20 11:30:31,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:31,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196527464] [2022-11-20 11:30:31,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:31,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:32,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:32,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196527464] [2022-11-20 11:30:32,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196527464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:32,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:32,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:30:32,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933586792] [2022-11-20 11:30:32,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:32,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:30:32,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:32,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:30:32,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:30:32,140 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:30:32,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 773 transitions, 12226 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:32,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:30:32,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:30:32,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:30:35,322 INFO L130 PetriNetUnfolder]: 667/1950 cut-off events. [2022-11-20 11:30:35,322 INFO L131 PetriNetUnfolder]: For 60022/60022 co-relation queries the response was YES. [2022-11-20 11:30:35,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17895 conditions, 1950 events. 667/1950 cut-off events. For 60022/60022 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 14149 event pairs, 51 based on Foata normal form. 1/1948 useless extension candidates. Maximal degree in co-relation 17673. Up to 1325 conditions per place. [2022-11-20 11:30:35,387 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 638 selfloop transitions, 211 changer transitions 21/909 dead transitions. [2022-11-20 11:30:35,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 909 transitions, 16598 flow [2022-11-20 11:30:35,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 11:30:35,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-20 11:30:35,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2130 transitions. [2022-11-20 11:30:35,391 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5664893617021277 [2022-11-20 11:30:35,391 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2130 transitions. [2022-11-20 11:30:35,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2130 transitions. [2022-11-20 11:30:35,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:30:35,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2130 transitions. [2022-11-20 11:30:35,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.25) internal successors, (2130), 40 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:35,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:35,396 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:35,396 INFO L175 Difference]: Start difference. First operand has 606 places, 773 transitions, 12226 flow. Second operand 40 states and 2130 transitions. [2022-11-20 11:30:35,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 909 transitions, 16598 flow [2022-11-20 11:30:36,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 909 transitions, 16309 flow, removed 83 selfloop flow, removed 21 redundant places. [2022-11-20 11:30:36,297 INFO L231 Difference]: Finished difference. Result has 633 places, 857 transitions, 14412 flow [2022-11-20 11:30:36,298 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=11993, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=14412, PETRI_PLACES=633, PETRI_TRANSITIONS=857} [2022-11-20 11:30:36,298 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 545 predicate places. [2022-11-20 11:30:36,298 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 857 transitions, 14412 flow [2022-11-20 11:30:36,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:36,299 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:30:36,299 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:36,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-11-20 11:30:36,299 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:30:36,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:36,299 INFO L85 PathProgramCache]: Analyzing trace with hash 706741162, now seen corresponding path program 164 times [2022-11-20 11:30:36,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:36,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808322658] [2022-11-20 11:30:36,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:36,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:36,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:36,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808322658] [2022-11-20 11:30:36,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808322658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:36,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:36,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:30:36,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568904030] [2022-11-20 11:30:36,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:36,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:30:36,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:36,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:30:36,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:30:36,863 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:30:36,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 857 transitions, 14412 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:36,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:30:36,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:30:36,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:30:40,091 INFO L130 PetriNetUnfolder]: 670/1974 cut-off events. [2022-11-20 11:30:40,092 INFO L131 PetriNetUnfolder]: For 67339/67339 co-relation queries the response was YES. [2022-11-20 11:30:40,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18790 conditions, 1974 events. 670/1974 cut-off events. For 67339/67339 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 14466 event pairs, 51 based on Foata normal form. 1/1972 useless extension candidates. Maximal degree in co-relation 18558. Up to 1438 conditions per place. [2022-11-20 11:30:40,142 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 720 selfloop transitions, 122 changer transitions 26/907 dead transitions. [2022-11-20 11:30:40,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 907 transitions, 17132 flow [2022-11-20 11:30:40,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 11:30:40,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 11:30:40,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1761 transitions. [2022-11-20 11:30:40,146 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5676982591876208 [2022-11-20 11:30:40,146 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1761 transitions. [2022-11-20 11:30:40,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1761 transitions. [2022-11-20 11:30:40,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:30:40,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1761 transitions. [2022-11-20 11:30:40,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.36363636363637) internal successors, (1761), 33 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:40,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:40,153 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:40,153 INFO L175 Difference]: Start difference. First operand has 633 places, 857 transitions, 14412 flow. Second operand 33 states and 1761 transitions. [2022-11-20 11:30:40,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 907 transitions, 17132 flow [2022-11-20 11:30:40,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 907 transitions, 16238 flow, removed 399 selfloop flow, removed 18 redundant places. [2022-11-20 11:30:40,979 INFO L231 Difference]: Finished difference. Result has 651 places, 860 transitions, 14004 flow [2022-11-20 11:30:40,980 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=13556, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=857, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=737, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=14004, PETRI_PLACES=651, PETRI_TRANSITIONS=860} [2022-11-20 11:30:40,980 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 563 predicate places. [2022-11-20 11:30:40,981 INFO L495 AbstractCegarLoop]: Abstraction has has 651 places, 860 transitions, 14004 flow [2022-11-20 11:30:40,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:40,981 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:30:40,981 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:40,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-11-20 11:30:40,981 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:30:40,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:40,982 INFO L85 PathProgramCache]: Analyzing trace with hash -50515862, now seen corresponding path program 165 times [2022-11-20 11:30:40,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:40,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304205650] [2022-11-20 11:30:40,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:40,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:41,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:41,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:41,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304205650] [2022-11-20 11:30:41,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304205650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:41,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:41,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:30:41,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156196564] [2022-11-20 11:30:41,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:41,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:30:41,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:41,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:30:41,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:30:41,639 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:30:41,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 860 transitions, 14004 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:41,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:30:41,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:30:41,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:30:44,842 INFO L130 PetriNetUnfolder]: 731/2125 cut-off events. [2022-11-20 11:30:44,843 INFO L131 PetriNetUnfolder]: For 76827/76827 co-relation queries the response was YES. [2022-11-20 11:30:44,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20369 conditions, 2125 events. 731/2125 cut-off events. For 76827/76827 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 15904 event pairs, 55 based on Foata normal form. 1/2123 useless extension candidates. Maximal degree in co-relation 20128. Up to 1419 conditions per place. [2022-11-20 11:30:44,901 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 720 selfloop transitions, 204 changer transitions 47/1010 dead transitions. [2022-11-20 11:30:44,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 677 places, 1010 transitions, 18991 flow [2022-11-20 11:30:44,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:30:44,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:30:44,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1813 transitions. [2022-11-20 11:30:44,904 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5672715894868585 [2022-11-20 11:30:44,904 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1813 transitions. [2022-11-20 11:30:44,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1813 transitions. [2022-11-20 11:30:44,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:30:44,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1813 transitions. [2022-11-20 11:30:44,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.3235294117647) internal successors, (1813), 34 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:44,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:44,908 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:44,908 INFO L175 Difference]: Start difference. First operand has 651 places, 860 transitions, 14004 flow. Second operand 34 states and 1813 transitions. [2022-11-20 11:30:44,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 677 places, 1010 transitions, 18991 flow [2022-11-20 11:30:45,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 1010 transitions, 18666 flow, removed 69 selfloop flow, removed 29 redundant places. [2022-11-20 11:30:45,881 INFO L231 Difference]: Finished difference. Result has 660 places, 927 transitions, 15865 flow [2022-11-20 11:30:45,882 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=13715, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=860, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=670, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=15865, PETRI_PLACES=660, PETRI_TRANSITIONS=927} [2022-11-20 11:30:45,882 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 572 predicate places. [2022-11-20 11:30:45,882 INFO L495 AbstractCegarLoop]: Abstraction has has 660 places, 927 transitions, 15865 flow [2022-11-20 11:30:45,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:45,883 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:30:45,883 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:45,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-11-20 11:30:45,883 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:30:45,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:45,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1227091020, now seen corresponding path program 166 times [2022-11-20 11:30:45,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:45,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105014647] [2022-11-20 11:30:45,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:45,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:46,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:46,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:46,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105014647] [2022-11-20 11:30:46,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105014647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:46,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:46,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:30:46,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494694993] [2022-11-20 11:30:46,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:46,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:30:46,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:46,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:30:46,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:30:46,410 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:30:46,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 927 transitions, 15865 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:46,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:30:46,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:30:46,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:30:49,278 INFO L130 PetriNetUnfolder]: 719/2092 cut-off events. [2022-11-20 11:30:49,278 INFO L131 PetriNetUnfolder]: For 81339/81339 co-relation queries the response was YES. [2022-11-20 11:30:49,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20751 conditions, 2092 events. 719/2092 cut-off events. For 81339/81339 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 15532 event pairs, 45 based on Foata normal form. 1/2090 useless extension candidates. Maximal degree in co-relation 20506. Up to 1535 conditions per place. [2022-11-20 11:30:49,331 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 776 selfloop transitions, 145 changer transitions 25/985 dead transitions. [2022-11-20 11:30:49,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 985 transitions, 19000 flow [2022-11-20 11:30:49,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 11:30:49,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 11:30:49,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1769 transitions. [2022-11-20 11:30:49,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5702772404900065 [2022-11-20 11:30:49,334 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1769 transitions. [2022-11-20 11:30:49,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1769 transitions. [2022-11-20 11:30:49,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:30:49,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1769 transitions. [2022-11-20 11:30:49,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.60606060606061) internal successors, (1769), 33 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:49,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:49,338 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:49,338 INFO L175 Difference]: Start difference. First operand has 660 places, 927 transitions, 15865 flow. Second operand 33 states and 1769 transitions. [2022-11-20 11:30:49,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 684 places, 985 transitions, 19000 flow [2022-11-20 11:30:50,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 657 places, 985 transitions, 18312 flow, removed 217 selfloop flow, removed 27 redundant places. [2022-11-20 11:30:50,226 INFO L231 Difference]: Finished difference. Result has 667 places, 938 transitions, 15945 flow [2022-11-20 11:30:50,226 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=15221, PETRI_DIFFERENCE_MINUEND_PLACES=625, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=927, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=785, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=15945, PETRI_PLACES=667, PETRI_TRANSITIONS=938} [2022-11-20 11:30:50,227 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 579 predicate places. [2022-11-20 11:30:50,227 INFO L495 AbstractCegarLoop]: Abstraction has has 667 places, 938 transitions, 15945 flow [2022-11-20 11:30:50,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:50,227 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:30:50,227 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:50,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-11-20 11:30:50,227 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:30:50,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:50,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1866040382, now seen corresponding path program 167 times [2022-11-20 11:30:50,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:50,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734438828] [2022-11-20 11:30:50,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:50,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:50,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:50,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:50,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734438828] [2022-11-20 11:30:50,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734438828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:50,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:50,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:30:50,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766880187] [2022-11-20 11:30:50,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:50,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:30:50,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:50,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:30:50,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:30:50,886 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:30:50,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 938 transitions, 15945 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:50,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:30:50,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:30:50,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:30:53,778 INFO L130 PetriNetUnfolder]: 720/2104 cut-off events. [2022-11-20 11:30:53,778 INFO L131 PetriNetUnfolder]: For 79788/79788 co-relation queries the response was YES. [2022-11-20 11:30:53,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20819 conditions, 2104 events. 720/2104 cut-off events. For 79788/79788 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 15748 event pairs, 52 based on Foata normal form. 1/2102 useless extension candidates. Maximal degree in co-relation 20571. Up to 1566 conditions per place. [2022-11-20 11:30:53,839 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 800 selfloop transitions, 115 changer transitions 30/984 dead transitions. [2022-11-20 11:30:53,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 984 transitions, 18884 flow [2022-11-20 11:30:53,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:30:53,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:30:53,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1853 transitions. [2022-11-20 11:30:53,842 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5632218844984802 [2022-11-20 11:30:53,842 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1853 transitions. [2022-11-20 11:30:53,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1853 transitions. [2022-11-20 11:30:53,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:30:53,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1853 transitions. [2022-11-20 11:30:53,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.94285714285714) internal successors, (1853), 35 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:53,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:53,846 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:53,846 INFO L175 Difference]: Start difference. First operand has 667 places, 938 transitions, 15945 flow. Second operand 35 states and 1853 transitions. [2022-11-20 11:30:53,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 984 transitions, 18884 flow [2022-11-20 11:30:54,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 984 transitions, 18502 flow, removed 121 selfloop flow, removed 27 redundant places. [2022-11-20 11:30:54,788 INFO L231 Difference]: Finished difference. Result has 677 places, 936 transitions, 16002 flow [2022-11-20 11:30:54,789 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=15613, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=938, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=824, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=16002, PETRI_PLACES=677, PETRI_TRANSITIONS=936} [2022-11-20 11:30:54,790 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 589 predicate places. [2022-11-20 11:30:54,790 INFO L495 AbstractCegarLoop]: Abstraction has has 677 places, 936 transitions, 16002 flow [2022-11-20 11:30:54,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:54,790 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:30:54,791 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:54,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-11-20 11:30:54,791 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:30:54,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:54,791 INFO L85 PathProgramCache]: Analyzing trace with hash -820000484, now seen corresponding path program 168 times [2022-11-20 11:30:54,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:54,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155814711] [2022-11-20 11:30:54,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:54,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:55,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:55,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:55,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155814711] [2022-11-20 11:30:55,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155814711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:55,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:55,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:30:55,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208186905] [2022-11-20 11:30:55,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:55,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:30:55,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:55,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:30:55,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:30:55,252 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:30:55,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 936 transitions, 16002 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:55,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:30:55,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:30:55,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:30:57,962 INFO L130 PetriNetUnfolder]: 728/2143 cut-off events. [2022-11-20 11:30:57,962 INFO L131 PetriNetUnfolder]: For 82017/82017 co-relation queries the response was YES. [2022-11-20 11:30:58,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21141 conditions, 2143 events. 728/2143 cut-off events. For 82017/82017 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 16200 event pairs, 52 based on Foata normal form. 1/2141 useless extension candidates. Maximal degree in co-relation 20891. Up to 1525 conditions per place. [2022-11-20 11:30:58,023 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 771 selfloop transitions, 173 changer transitions 26/1009 dead transitions. [2022-11-20 11:30:58,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 1009 transitions, 19500 flow [2022-11-20 11:30:58,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:30:58,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:30:58,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1707 transitions. [2022-11-20 11:30:58,025 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5674867021276596 [2022-11-20 11:30:58,025 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1707 transitions. [2022-11-20 11:30:58,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1707 transitions. [2022-11-20 11:30:58,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:30:58,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1707 transitions. [2022-11-20 11:30:58,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.34375) internal successors, (1707), 32 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:58,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:58,029 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:58,029 INFO L175 Difference]: Start difference. First operand has 677 places, 936 transitions, 16002 flow. Second operand 32 states and 1707 transitions. [2022-11-20 11:30:58,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 698 places, 1009 transitions, 19500 flow [2022-11-20 11:30:59,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 664 places, 1009 transitions, 19087 flow, removed 78 selfloop flow, removed 34 redundant places. [2022-11-20 11:30:59,030 INFO L231 Difference]: Finished difference. Result has 674 places, 959 transitions, 16671 flow [2022-11-20 11:30:59,031 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=15633, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=936, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=767, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=16671, PETRI_PLACES=674, PETRI_TRANSITIONS=959} [2022-11-20 11:30:59,031 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 586 predicate places. [2022-11-20 11:30:59,031 INFO L495 AbstractCegarLoop]: Abstraction has has 674 places, 959 transitions, 16671 flow [2022-11-20 11:30:59,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:59,032 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:30:59,032 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:59,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-11-20 11:30:59,032 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:30:59,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:59,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1117866652, now seen corresponding path program 169 times [2022-11-20 11:30:59,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:59,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197504402] [2022-11-20 11:30:59,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:59,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:59,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:59,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:59,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197504402] [2022-11-20 11:30:59,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197504402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:59,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:59,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:30:59,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845312560] [2022-11-20 11:30:59,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:59,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:30:59,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:59,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:30:59,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:30:59,532 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:30:59,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 674 places, 959 transitions, 16671 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:59,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:30:59,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:30:59,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:31:02,256 INFO L130 PetriNetUnfolder]: 729/2161 cut-off events. [2022-11-20 11:31:02,256 INFO L131 PetriNetUnfolder]: For 84406/84406 co-relation queries the response was YES. [2022-11-20 11:31:02,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21381 conditions, 2161 events. 729/2161 cut-off events. For 84406/84406 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 16413 event pairs, 50 based on Foata normal form. 1/2159 useless extension candidates. Maximal degree in co-relation 21131. Up to 1522 conditions per place. [2022-11-20 11:31:02,310 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 768 selfloop transitions, 179 changer transitions 28/1014 dead transitions. [2022-11-20 11:31:02,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 1014 transitions, 19859 flow [2022-11-20 11:31:02,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 11:31:02,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 11:31:02,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1757 transitions. [2022-11-20 11:31:02,313 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5664087685364281 [2022-11-20 11:31:02,313 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1757 transitions. [2022-11-20 11:31:02,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1757 transitions. [2022-11-20 11:31:02,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:31:02,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1757 transitions. [2022-11-20 11:31:02,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.24242424242424) internal successors, (1757), 33 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:02,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:02,317 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:02,317 INFO L175 Difference]: Start difference. First operand has 674 places, 959 transitions, 16671 flow. Second operand 33 states and 1757 transitions. [2022-11-20 11:31:02,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 699 places, 1014 transitions, 19859 flow [2022-11-20 11:31:03,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 675 places, 1014 transitions, 19570 flow, removed 94 selfloop flow, removed 24 redundant places. [2022-11-20 11:31:03,278 INFO L231 Difference]: Finished difference. Result has 685 places, 962 transitions, 17013 flow [2022-11-20 11:31:03,279 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=16410, PETRI_DIFFERENCE_MINUEND_PLACES=643, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=959, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=784, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=17013, PETRI_PLACES=685, PETRI_TRANSITIONS=962} [2022-11-20 11:31:03,279 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 597 predicate places. [2022-11-20 11:31:03,279 INFO L495 AbstractCegarLoop]: Abstraction has has 685 places, 962 transitions, 17013 flow [2022-11-20 11:31:03,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:03,279 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:31:03,280 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:31:03,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-11-20 11:31:03,280 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:31:03,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:03,280 INFO L85 PathProgramCache]: Analyzing trace with hash 172734910, now seen corresponding path program 170 times [2022-11-20 11:31:03,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:03,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812914965] [2022-11-20 11:31:03,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:03,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:31:03,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:31:03,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812914965] [2022-11-20 11:31:03,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812914965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:31:03,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:31:03,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:31:03,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180452929] [2022-11-20 11:31:03,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:31:03,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:31:03,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:31:03,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:31:03,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:31:03,772 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:31:03,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 685 places, 962 transitions, 17013 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:03,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:31:03,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:31:03,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:31:06,766 INFO L130 PetriNetUnfolder]: 733/2160 cut-off events. [2022-11-20 11:31:06,766 INFO L131 PetriNetUnfolder]: For 87484/87484 co-relation queries the response was YES. [2022-11-20 11:31:06,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21770 conditions, 2160 events. 733/2160 cut-off events. For 87484/87484 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 16373 event pairs, 61 based on Foata normal form. 1/2158 useless extension candidates. Maximal degree in co-relation 21516. Up to 1606 conditions per place. [2022-11-20 11:31:06,819 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 832 selfloop transitions, 116 changer transitions 30/1017 dead transitions. [2022-11-20 11:31:06,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 714 places, 1017 transitions, 20152 flow [2022-11-20 11:31:06,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:31:06,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:31:06,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1950 transitions. [2022-11-20 11:31:06,823 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5606670500287522 [2022-11-20 11:31:06,823 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1950 transitions. [2022-11-20 11:31:06,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1950 transitions. [2022-11-20 11:31:06,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:31:06,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1950 transitions. [2022-11-20 11:31:06,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.7027027027027) internal successors, (1950), 37 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:06,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:06,827 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:06,827 INFO L175 Difference]: Start difference. First operand has 685 places, 962 transitions, 17013 flow. Second operand 37 states and 1950 transitions. [2022-11-20 11:31:06,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 714 places, 1017 transitions, 20152 flow [2022-11-20 11:31:07,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 1017 transitions, 19783 flow, removed 81 selfloop flow, removed 27 redundant places. [2022-11-20 11:31:07,786 INFO L231 Difference]: Finished difference. Result has 697 places, 971 transitions, 17308 flow [2022-11-20 11:31:07,787 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=16676, PETRI_DIFFERENCE_MINUEND_PLACES=651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=847, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=17308, PETRI_PLACES=697, PETRI_TRANSITIONS=971} [2022-11-20 11:31:07,787 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 609 predicate places. [2022-11-20 11:31:07,787 INFO L495 AbstractCegarLoop]: Abstraction has has 697 places, 971 transitions, 17308 flow [2022-11-20 11:31:07,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:07,787 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:31:07,788 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:31:07,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-11-20 11:31:07,788 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:31:07,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:07,788 INFO L85 PathProgramCache]: Analyzing trace with hash 432502776, now seen corresponding path program 171 times [2022-11-20 11:31:07,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:07,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472814280] [2022-11-20 11:31:07,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:07,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:08,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:31:08,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:31:08,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472814280] [2022-11-20 11:31:08,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472814280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:31:08,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:31:08,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:31:08,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123273973] [2022-11-20 11:31:08,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:31:08,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:31:08,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:31:08,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:31:08,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:31:08,366 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:31:08,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 971 transitions, 17308 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:08,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:31:08,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:31:08,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:31:11,804 INFO L130 PetriNetUnfolder]: 747/2197 cut-off events. [2022-11-20 11:31:11,804 INFO L131 PetriNetUnfolder]: For 92742/92742 co-relation queries the response was YES. [2022-11-20 11:31:11,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22474 conditions, 2197 events. 747/2197 cut-off events. For 92742/92742 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 16751 event pairs, 48 based on Foata normal form. 1/2195 useless extension candidates. Maximal degree in co-relation 22218. Up to 1653 conditions per place. [2022-11-20 11:31:11,859 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 860 selfloop transitions, 127 changer transitions 21/1047 dead transitions. [2022-11-20 11:31:11,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 1047 transitions, 21241 flow [2022-11-20 11:31:11,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 11:31:11,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-20 11:31:11,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2075 transitions. [2022-11-20 11:31:11,865 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5660120021822149 [2022-11-20 11:31:11,866 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2075 transitions. [2022-11-20 11:31:11,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2075 transitions. [2022-11-20 11:31:11,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:31:11,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2075 transitions. [2022-11-20 11:31:11,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 53.205128205128204) internal successors, (2075), 39 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:11,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:11,873 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:11,873 INFO L175 Difference]: Start difference. First operand has 697 places, 971 transitions, 17308 flow. Second operand 39 states and 2075 transitions. [2022-11-20 11:31:11,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 1047 transitions, 21241 flow [2022-11-20 11:31:13,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 696 places, 1047 transitions, 20774 flow, removed 117 selfloop flow, removed 30 redundant places. [2022-11-20 11:31:13,184 INFO L231 Difference]: Finished difference. Result has 708 places, 1002 transitions, 18197 flow [2022-11-20 11:31:13,185 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=16895, PETRI_DIFFERENCE_MINUEND_PLACES=658, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=971, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=861, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=18197, PETRI_PLACES=708, PETRI_TRANSITIONS=1002} [2022-11-20 11:31:13,185 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 620 predicate places. [2022-11-20 11:31:13,185 INFO L495 AbstractCegarLoop]: Abstraction has has 708 places, 1002 transitions, 18197 flow [2022-11-20 11:31:13,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:13,185 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:31:13,185 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:31:13,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-11-20 11:31:13,186 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:31:13,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:13,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1115000266, now seen corresponding path program 172 times [2022-11-20 11:31:13,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:13,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667376540] [2022-11-20 11:31:13,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:13,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:13,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:31:13,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:31:13,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667376540] [2022-11-20 11:31:13,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667376540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:31:13,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:31:13,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:31:13,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303953115] [2022-11-20 11:31:13,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:31:13,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:31:13,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:31:13,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:31:13,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:31:13,740 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:31:13,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 708 places, 1002 transitions, 18197 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:13,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:31:13,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:31:13,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:31:16,753 INFO L130 PetriNetUnfolder]: 748/2210 cut-off events. [2022-11-20 11:31:16,753 INFO L131 PetriNetUnfolder]: For 98163/98163 co-relation queries the response was YES. [2022-11-20 11:31:16,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22859 conditions, 2210 events. 748/2210 cut-off events. For 98163/98163 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 16838 event pairs, 47 based on Foata normal form. 1/2208 useless extension candidates. Maximal degree in co-relation 22598. Up to 1660 conditions per place. [2022-11-20 11:31:16,805 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 867 selfloop transitions, 123 changer transitions 18/1047 dead transitions. [2022-11-20 11:31:16,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 731 places, 1047 transitions, 21211 flow [2022-11-20 11:31:16,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:31:16,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:31:16,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1614 transitions. [2022-11-20 11:31:16,808 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5723404255319149 [2022-11-20 11:31:16,808 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1614 transitions. [2022-11-20 11:31:16,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1614 transitions. [2022-11-20 11:31:16,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:31:16,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1614 transitions. [2022-11-20 11:31:16,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.8) internal successors, (1614), 30 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:16,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:16,813 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:16,813 INFO L175 Difference]: Start difference. First operand has 708 places, 1002 transitions, 18197 flow. Second operand 30 states and 1614 transitions. [2022-11-20 11:31:16,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 731 places, 1047 transitions, 21211 flow [2022-11-20 11:31:18,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 714 places, 1047 transitions, 20449 flow, removed 326 selfloop flow, removed 17 redundant places. [2022-11-20 11:31:18,070 INFO L231 Difference]: Finished difference. Result has 721 places, 1010 transitions, 18075 flow [2022-11-20 11:31:18,071 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17439, PETRI_DIFFERENCE_MINUEND_PLACES=685, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1002, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=884, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=18075, PETRI_PLACES=721, PETRI_TRANSITIONS=1010} [2022-11-20 11:31:18,071 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 633 predicate places. [2022-11-20 11:31:18,071 INFO L495 AbstractCegarLoop]: Abstraction has has 721 places, 1010 transitions, 18075 flow [2022-11-20 11:31:18,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:18,072 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:31:18,072 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:31:18,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-11-20 11:31:18,072 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:31:18,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:18,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1507605220, now seen corresponding path program 173 times [2022-11-20 11:31:18,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:18,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663372568] [2022-11-20 11:31:18,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:18,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:18,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:31:18,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:31:18,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663372568] [2022-11-20 11:31:18,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663372568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:31:18,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:31:18,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:31:18,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210945468] [2022-11-20 11:31:18,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:31:18,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:31:18,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:31:18,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:31:18,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:31:18,727 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:31:18,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 721 places, 1010 transitions, 18075 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:18,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:31:18,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:31:18,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:31:22,443 INFO L130 PetriNetUnfolder]: 757/2245 cut-off events. [2022-11-20 11:31:22,443 INFO L131 PetriNetUnfolder]: For 103391/103391 co-relation queries the response was YES. [2022-11-20 11:31:22,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23191 conditions, 2245 events. 757/2245 cut-off events. For 103391/103391 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 17297 event pairs, 47 based on Foata normal form. 1/2243 useless extension candidates. Maximal degree in co-relation 22924. Up to 1473 conditions per place. [2022-11-20 11:31:22,513 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 718 selfloop transitions, 284 changer transitions 29/1070 dead transitions. [2022-11-20 11:31:22,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 759 places, 1070 transitions, 21546 flow [2022-11-20 11:31:22,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-20 11:31:22,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-20 11:31:22,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2320 transitions. [2022-11-20 11:31:22,517 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5609284332688588 [2022-11-20 11:31:22,517 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2320 transitions. [2022-11-20 11:31:22,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2320 transitions. [2022-11-20 11:31:22,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:31:22,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2320 transitions. [2022-11-20 11:31:22,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 52.72727272727273) internal successors, (2320), 44 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:22,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:22,522 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:22,522 INFO L175 Difference]: Start difference. First operand has 721 places, 1010 transitions, 18075 flow. Second operand 44 states and 2320 transitions. [2022-11-20 11:31:22,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 759 places, 1070 transitions, 21546 flow [2022-11-20 11:31:24,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 734 places, 1070 transitions, 21023 flow, removed 175 selfloop flow, removed 25 redundant places. [2022-11-20 11:31:24,396 INFO L231 Difference]: Finished difference. Result has 744 places, 1016 transitions, 18494 flow [2022-11-20 11:31:24,397 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=17576, PETRI_DIFFERENCE_MINUEND_PLACES=691, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1010, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=731, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=18494, PETRI_PLACES=744, PETRI_TRANSITIONS=1016} [2022-11-20 11:31:24,397 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 656 predicate places. [2022-11-20 11:31:24,397 INFO L495 AbstractCegarLoop]: Abstraction has has 744 places, 1016 transitions, 18494 flow [2022-11-20 11:31:24,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:24,397 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:31:24,398 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:31:24,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-11-20 11:31:24,398 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:31:24,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:24,398 INFO L85 PathProgramCache]: Analyzing trace with hash -682117680, now seen corresponding path program 174 times [2022-11-20 11:31:24,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:24,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173905620] [2022-11-20 11:31:24,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:24,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:24,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:31:24,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:31:24,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173905620] [2022-11-20 11:31:24,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173905620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:31:24,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:31:24,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:31:24,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842753235] [2022-11-20 11:31:24,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:31:24,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:31:24,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:31:24,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:31:24,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:31:24,995 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:31:24,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 744 places, 1016 transitions, 18494 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:24,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:31:24,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:31:24,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:31:28,738 INFO L130 PetriNetUnfolder]: 750/2231 cut-off events. [2022-11-20 11:31:28,738 INFO L131 PetriNetUnfolder]: For 101504/101504 co-relation queries the response was YES. [2022-11-20 11:31:28,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23178 conditions, 2231 events. 750/2231 cut-off events. For 101504/101504 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 17124 event pairs, 47 based on Foata normal form. 1/2229 useless extension candidates. Maximal degree in co-relation 22907. Up to 1646 conditions per place. [2022-11-20 11:31:28,804 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 854 selfloop transitions, 153 changer transitions 18/1064 dead transitions. [2022-11-20 11:31:28,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 771 places, 1064 transitions, 21680 flow [2022-11-20 11:31:28,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:31:28,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:31:28,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1872 transitions. [2022-11-20 11:31:28,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5689969604863222 [2022-11-20 11:31:28,807 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1872 transitions. [2022-11-20 11:31:28,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1872 transitions. [2022-11-20 11:31:28,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:31:28,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1872 transitions. [2022-11-20 11:31:28,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.48571428571429) internal successors, (1872), 35 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:28,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:28,811 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:28,812 INFO L175 Difference]: Start difference. First operand has 744 places, 1016 transitions, 18494 flow. Second operand 35 states and 1872 transitions. [2022-11-20 11:31:28,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 771 places, 1064 transitions, 21680 flow [2022-11-20 11:31:30,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 735 places, 1064 transitions, 21264 flow, removed 80 selfloop flow, removed 36 redundant places. [2022-11-20 11:31:30,344 INFO L231 Difference]: Finished difference. Result has 743 places, 1024 transitions, 18823 flow [2022-11-20 11:31:30,345 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18100, PETRI_DIFFERENCE_MINUEND_PLACES=701, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1016, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=868, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=18823, PETRI_PLACES=743, PETRI_TRANSITIONS=1024} [2022-11-20 11:31:30,345 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 655 predicate places. [2022-11-20 11:31:30,346 INFO L495 AbstractCegarLoop]: Abstraction has has 743 places, 1024 transitions, 18823 flow [2022-11-20 11:31:30,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:30,346 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:31:30,346 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:31:30,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-11-20 11:31:30,347 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:31:30,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:30,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1758491220, now seen corresponding path program 175 times [2022-11-20 11:31:30,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:30,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009640159] [2022-11-20 11:31:30,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:30,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:31:30,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:31:30,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009640159] [2022-11-20 11:31:30,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009640159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:31:30,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:31:30,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:31:30,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618864991] [2022-11-20 11:31:30,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:31:30,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:31:30,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:31:30,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:31:30,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:31:30,999 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:31:31,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 1024 transitions, 18823 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:31,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:31:31,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:31:31,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:31:34,162 INFO L130 PetriNetUnfolder]: 757/2248 cut-off events. [2022-11-20 11:31:34,162 INFO L131 PetriNetUnfolder]: For 105375/105375 co-relation queries the response was YES. [2022-11-20 11:31:34,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23583 conditions, 2248 events. 757/2248 cut-off events. For 105375/105375 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 17267 event pairs, 50 based on Foata normal form. 1/2246 useless extension candidates. Maximal degree in co-relation 23311. Up to 1696 conditions per place. [2022-11-20 11:31:34,237 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 899 selfloop transitions, 120 changer transitions 20/1078 dead transitions. [2022-11-20 11:31:34,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 771 places, 1078 transitions, 22079 flow [2022-11-20 11:31:34,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:31:34,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:31:34,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1812 transitions. [2022-11-20 11:31:34,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5669586983729662 [2022-11-20 11:31:34,239 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1812 transitions. [2022-11-20 11:31:34,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1812 transitions. [2022-11-20 11:31:34,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:31:34,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1812 transitions. [2022-11-20 11:31:34,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.294117647058826) internal successors, (1812), 34 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:34,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:34,244 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:34,244 INFO L175 Difference]: Start difference. First operand has 743 places, 1024 transitions, 18823 flow. Second operand 34 states and 1812 transitions. [2022-11-20 11:31:34,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 771 places, 1078 transitions, 22079 flow [2022-11-20 11:31:35,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 746 places, 1078 transitions, 21591 flow, removed 171 selfloop flow, removed 25 redundant places. [2022-11-20 11:31:35,708 INFO L231 Difference]: Finished difference. Result has 757 places, 1039 transitions, 19093 flow [2022-11-20 11:31:35,708 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18384, PETRI_DIFFERENCE_MINUEND_PLACES=713, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1024, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=912, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=19093, PETRI_PLACES=757, PETRI_TRANSITIONS=1039} [2022-11-20 11:31:35,709 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 669 predicate places. [2022-11-20 11:31:35,709 INFO L495 AbstractCegarLoop]: Abstraction has has 757 places, 1039 transitions, 19093 flow [2022-11-20 11:31:35,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:35,710 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:31:35,710 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:31:35,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-11-20 11:31:35,710 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:31:35,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:35,711 INFO L85 PathProgramCache]: Analyzing trace with hash 236371498, now seen corresponding path program 176 times [2022-11-20 11:31:35,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:35,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051474835] [2022-11-20 11:31:35,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:35,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:36,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:31:36,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:31:36,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051474835] [2022-11-20 11:31:36,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051474835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:31:36,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:31:36,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:31:36,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342074501] [2022-11-20 11:31:36,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:31:36,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:31:36,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:31:36,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:31:36,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:31:36,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:31:36,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 757 places, 1039 transitions, 19093 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:36,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:31:36,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:31:36,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:31:39,852 INFO L130 PetriNetUnfolder]: 763/2251 cut-off events. [2022-11-20 11:31:39,852 INFO L131 PetriNetUnfolder]: For 108242/108242 co-relation queries the response was YES. [2022-11-20 11:31:39,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23885 conditions, 2251 events. 763/2251 cut-off events. For 108242/108242 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17290 event pairs, 48 based on Foata normal form. 1/2250 useless extension candidates. Maximal degree in co-relation 23607. Up to 1677 conditions per place. [2022-11-20 11:31:39,916 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 893 selfloop transitions, 124 changer transitions 27/1083 dead transitions. [2022-11-20 11:31:39,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 787 places, 1083 transitions, 22245 flow [2022-11-20 11:31:39,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:31:39,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:31:39,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1950 transitions. [2022-11-20 11:31:39,919 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5606670500287522 [2022-11-20 11:31:39,919 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1950 transitions. [2022-11-20 11:31:39,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1950 transitions. [2022-11-20 11:31:39,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:31:39,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1950 transitions. [2022-11-20 11:31:39,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.7027027027027) internal successors, (1950), 37 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:39,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:39,923 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:39,923 INFO L175 Difference]: Start difference. First operand has 757 places, 1039 transitions, 19093 flow. Second operand 37 states and 1950 transitions. [2022-11-20 11:31:39,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 787 places, 1083 transitions, 22245 flow [2022-11-20 11:31:41,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 762 places, 1083 transitions, 21736 flow, removed 163 selfloop flow, removed 25 redundant places. [2022-11-20 11:31:41,225 INFO L231 Difference]: Finished difference. Result has 773 places, 1039 transitions, 19108 flow [2022-11-20 11:31:41,226 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18598, PETRI_DIFFERENCE_MINUEND_PLACES=726, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1039, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=916, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=19108, PETRI_PLACES=773, PETRI_TRANSITIONS=1039} [2022-11-20 11:31:41,227 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 685 predicate places. [2022-11-20 11:31:41,227 INFO L495 AbstractCegarLoop]: Abstraction has has 773 places, 1039 transitions, 19108 flow [2022-11-20 11:31:41,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:41,227 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:31:41,227 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:31:41,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-11-20 11:31:41,228 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:31:41,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:41,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1080236758, now seen corresponding path program 177 times [2022-11-20 11:31:41,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:41,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438618409] [2022-11-20 11:31:41,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:41,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:41,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:31:41,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:31:41,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438618409] [2022-11-20 11:31:41,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438618409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:31:41,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:31:41,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:31:41,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896507929] [2022-11-20 11:31:41,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:31:41,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:31:41,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:31:41,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:31:41,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:31:41,842 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:31:41,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 773 places, 1039 transitions, 19108 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:41,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:31:41,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:31:41,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:31:45,780 INFO L130 PetriNetUnfolder]: 751/2243 cut-off events. [2022-11-20 11:31:45,780 INFO L131 PetriNetUnfolder]: For 110067/110067 co-relation queries the response was YES. [2022-11-20 11:31:45,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23703 conditions, 2243 events. 751/2243 cut-off events. For 110067/110067 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17342 event pairs, 50 based on Foata normal form. 1/2241 useless extension candidates. Maximal degree in co-relation 23420. Up to 1687 conditions per place. [2022-11-20 11:31:45,835 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 894 selfloop transitions, 118 changer transitions 18/1069 dead transitions. [2022-11-20 11:31:45,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 799 places, 1069 transitions, 21590 flow [2022-11-20 11:31:45,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:31:45,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:31:45,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1841 transitions. [2022-11-20 11:31:45,838 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5595744680851064 [2022-11-20 11:31:45,838 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1841 transitions. [2022-11-20 11:31:45,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1841 transitions. [2022-11-20 11:31:45,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:31:45,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1841 transitions. [2022-11-20 11:31:45,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.6) internal successors, (1841), 35 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:45,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:45,842 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:45,842 INFO L175 Difference]: Start difference. First operand has 773 places, 1039 transitions, 19108 flow. Second operand 35 states and 1841 transitions. [2022-11-20 11:31:45,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 799 places, 1069 transitions, 21590 flow [2022-11-20 11:31:47,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 766 places, 1069 transitions, 21101 flow, removed 146 selfloop flow, removed 33 redundant places. [2022-11-20 11:31:47,119 INFO L231 Difference]: Finished difference. Result has 773 places, 1036 transitions, 18856 flow [2022-11-20 11:31:47,120 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18633, PETRI_DIFFERENCE_MINUEND_PLACES=732, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1039, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=921, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=18856, PETRI_PLACES=773, PETRI_TRANSITIONS=1036} [2022-11-20 11:31:47,120 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 685 predicate places. [2022-11-20 11:31:47,120 INFO L495 AbstractCegarLoop]: Abstraction has has 773 places, 1036 transitions, 18856 flow [2022-11-20 11:31:47,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:47,120 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:31:47,121 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:31:47,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-11-20 11:31:47,121 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:31:47,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:47,121 INFO L85 PathProgramCache]: Analyzing trace with hash -907608988, now seen corresponding path program 178 times [2022-11-20 11:31:47,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:47,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960584357] [2022-11-20 11:31:47,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:47,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:31:47,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:31:47,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960584357] [2022-11-20 11:31:47,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960584357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:31:47,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:31:47,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:31:47,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559388377] [2022-11-20 11:31:47,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:31:47,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:31:47,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:31:47,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:31:47,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:31:47,649 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:31:47,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 773 places, 1036 transitions, 18856 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:47,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:31:47,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:31:47,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:31:51,087 INFO L130 PetriNetUnfolder]: 769/2296 cut-off events. [2022-11-20 11:31:51,087 INFO L131 PetriNetUnfolder]: For 112103/112103 co-relation queries the response was YES. [2022-11-20 11:31:51,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24273 conditions, 2296 events. 769/2296 cut-off events. For 112103/112103 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17861 event pairs, 46 based on Foata normal form. 1/2294 useless extension candidates. Maximal degree in co-relation 23991. Up to 1701 conditions per place. [2022-11-20 11:31:51,161 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 910 selfloop transitions, 149 changer transitions 21/1119 dead transitions. [2022-11-20 11:31:51,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 796 places, 1119 transitions, 22870 flow [2022-11-20 11:31:51,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:31:51,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:31:51,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1715 transitions. [2022-11-20 11:31:51,163 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5701462765957447 [2022-11-20 11:31:51,163 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1715 transitions. [2022-11-20 11:31:51,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1715 transitions. [2022-11-20 11:31:51,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:31:51,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1715 transitions. [2022-11-20 11:31:51,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.59375) internal successors, (1715), 32 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:51,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:51,167 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:51,167 INFO L175 Difference]: Start difference. First operand has 773 places, 1036 transitions, 18856 flow. Second operand 32 states and 1715 transitions. [2022-11-20 11:31:51,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 796 places, 1119 transitions, 22870 flow [2022-11-20 11:31:52,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 760 places, 1119 transitions, 22535 flow, removed 21 selfloop flow, removed 36 redundant places. [2022-11-20 11:31:52,805 INFO L231 Difference]: Finished difference. Result has 769 places, 1067 transitions, 19664 flow [2022-11-20 11:31:52,806 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=18541, PETRI_DIFFERENCE_MINUEND_PLACES=729, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1036, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=891, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=19664, PETRI_PLACES=769, PETRI_TRANSITIONS=1067} [2022-11-20 11:31:52,806 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 681 predicate places. [2022-11-20 11:31:52,806 INFO L495 AbstractCegarLoop]: Abstraction has has 769 places, 1067 transitions, 19664 flow [2022-11-20 11:31:52,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:52,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:31:52,807 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:31:52,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-11-20 11:31:52,807 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:31:52,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:52,807 INFO L85 PathProgramCache]: Analyzing trace with hash 515317298, now seen corresponding path program 179 times [2022-11-20 11:31:52,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:52,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806877456] [2022-11-20 11:31:52,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:52,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:53,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:31:53,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:31:53,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806877456] [2022-11-20 11:31:53,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806877456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:31:53,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:31:53,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:31:53,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981252623] [2022-11-20 11:31:53,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:31:53,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:31:53,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:31:53,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:31:53,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:31:53,401 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:31:53,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 769 places, 1067 transitions, 19664 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:53,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:31:53,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:31:53,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:31:57,006 INFO L130 PetriNetUnfolder]: 764/2290 cut-off events. [2022-11-20 11:31:57,006 INFO L131 PetriNetUnfolder]: For 114913/114913 co-relation queries the response was YES. [2022-11-20 11:31:57,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24426 conditions, 2290 events. 764/2290 cut-off events. For 114913/114913 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17772 event pairs, 45 based on Foata normal form. 1/2288 useless extension candidates. Maximal degree in co-relation 24143. Up to 1711 conditions per place. [2022-11-20 11:31:57,080 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 906 selfloop transitions, 150 changer transitions 20/1115 dead transitions. [2022-11-20 11:31:57,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 798 places, 1115 transitions, 22978 flow [2022-11-20 11:31:57,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:31:57,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:31:57,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1868 transitions. [2022-11-20 11:31:57,086 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5677811550151975 [2022-11-20 11:31:57,086 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1868 transitions. [2022-11-20 11:31:57,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1868 transitions. [2022-11-20 11:31:57,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:31:57,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1868 transitions. [2022-11-20 11:31:57,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.371428571428574) internal successors, (1868), 35 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:57,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:57,093 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:57,094 INFO L175 Difference]: Start difference. First operand has 769 places, 1067 transitions, 19664 flow. Second operand 35 states and 1868 transitions. [2022-11-20 11:31:57,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 798 places, 1115 transitions, 22978 flow [2022-11-20 11:31:58,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 774 places, 1115 transitions, 22342 flow, removed 240 selfloop flow, removed 24 redundant places. [2022-11-20 11:31:58,627 INFO L231 Difference]: Finished difference. Result has 784 places, 1076 transitions, 19782 flow [2022-11-20 11:31:58,628 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19084, PETRI_DIFFERENCE_MINUEND_PLACES=740, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=922, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=19782, PETRI_PLACES=784, PETRI_TRANSITIONS=1076} [2022-11-20 11:31:58,628 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 696 predicate places. [2022-11-20 11:31:58,628 INFO L495 AbstractCegarLoop]: Abstraction has has 784 places, 1076 transitions, 19782 flow [2022-11-20 11:31:58,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:58,629 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:31:58,629 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:31:58,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-11-20 11:31:58,630 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:31:58,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:58,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1989530518, now seen corresponding path program 180 times [2022-11-20 11:31:58,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:58,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845867873] [2022-11-20 11:31:58,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:58,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:31:59,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:31:59,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:31:59,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845867873] [2022-11-20 11:31:59,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845867873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:31:59,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:31:59,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:31:59,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384411304] [2022-11-20 11:31:59,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:31:59,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:31:59,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:31:59,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:31:59,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:31:59,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:31:59,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 784 places, 1076 transitions, 19782 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:59,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:31:59,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:31:59,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:02,918 INFO L130 PetriNetUnfolder]: 780/2308 cut-off events. [2022-11-20 11:32:02,918 INFO L131 PetriNetUnfolder]: For 119861/119861 co-relation queries the response was YES. [2022-11-20 11:32:02,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24975 conditions, 2308 events. 780/2308 cut-off events. For 119861/119861 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17910 event pairs, 42 based on Foata normal form. 1/2306 useless extension candidates. Maximal degree in co-relation 24685. Up to 1653 conditions per place. [2022-11-20 11:32:02,991 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 887 selfloop transitions, 187 changer transitions 29/1142 dead transitions. [2022-11-20 11:32:02,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 812 places, 1142 transitions, 23570 flow [2022-11-20 11:32:02,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:32:02,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:32:02,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1858 transitions. [2022-11-20 11:32:02,994 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.564741641337386 [2022-11-20 11:32:02,994 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1858 transitions. [2022-11-20 11:32:02,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1858 transitions. [2022-11-20 11:32:02,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:02,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1858 transitions. [2022-11-20 11:32:02,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.08571428571429) internal successors, (1858), 35 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:02,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:02,998 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:02,998 INFO L175 Difference]: Start difference. First operand has 784 places, 1076 transitions, 19782 flow. Second operand 35 states and 1858 transitions. [2022-11-20 11:32:02,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 812 places, 1142 transitions, 23570 flow [2022-11-20 11:32:04,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 785 places, 1142 transitions, 22948 flow, removed 202 selfloop flow, removed 27 redundant places. [2022-11-20 11:32:04,403 INFO L231 Difference]: Finished difference. Result has 796 places, 1092 transitions, 20296 flow [2022-11-20 11:32:04,404 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19186, PETRI_DIFFERENCE_MINUEND_PLACES=751, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1076, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=890, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=20296, PETRI_PLACES=796, PETRI_TRANSITIONS=1092} [2022-11-20 11:32:04,404 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 708 predicate places. [2022-11-20 11:32:04,404 INFO L495 AbstractCegarLoop]: Abstraction has has 796 places, 1092 transitions, 20296 flow [2022-11-20 11:32:04,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:04,405 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:04,405 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:04,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-11-20 11:32:04,405 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:32:04,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:04,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1403062422, now seen corresponding path program 181 times [2022-11-20 11:32:04,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:04,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562818604] [2022-11-20 11:32:04,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:04,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:04,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:32:04,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:04,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562818604] [2022-11-20 11:32:04,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562818604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:04,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:04,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:32:04,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538684430] [2022-11-20 11:32:04,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:04,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:32:04,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:04,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:32:04,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:32:04,970 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:32:04,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 796 places, 1092 transitions, 20296 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:04,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:04,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:32:04,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:08,544 INFO L130 PetriNetUnfolder]: 765/2291 cut-off events. [2022-11-20 11:32:08,544 INFO L131 PetriNetUnfolder]: For 117160/117160 co-relation queries the response was YES. [2022-11-20 11:32:08,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24647 conditions, 2291 events. 765/2291 cut-off events. For 117160/117160 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17895 event pairs, 41 based on Foata normal form. 1/2290 useless extension candidates. Maximal degree in co-relation 24355. Up to 1657 conditions per place. [2022-11-20 11:32:08,605 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 888 selfloop transitions, 169 changer transitions 30/1126 dead transitions. [2022-11-20 11:32:08,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 1126 transitions, 22945 flow [2022-11-20 11:32:08,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 11:32:08,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 11:32:08,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1749 transitions. [2022-11-20 11:32:08,608 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2022-11-20 11:32:08,608 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1749 transitions. [2022-11-20 11:32:08,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1749 transitions. [2022-11-20 11:32:08,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:08,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1749 transitions. [2022-11-20 11:32:08,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.0) internal successors, (1749), 33 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:08,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:08,612 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:08,612 INFO L175 Difference]: Start difference. First operand has 796 places, 1092 transitions, 20296 flow. Second operand 33 states and 1749 transitions. [2022-11-20 11:32:08,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 822 places, 1126 transitions, 22945 flow [2022-11-20 11:32:10,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 794 places, 1126 transitions, 22417 flow, removed 158 selfloop flow, removed 28 redundant places. [2022-11-20 11:32:10,046 INFO L231 Difference]: Finished difference. Result has 801 places, 1077 transitions, 19783 flow [2022-11-20 11:32:10,046 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19776, PETRI_DIFFERENCE_MINUEND_PLACES=762, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1092, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=923, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=19783, PETRI_PLACES=801, PETRI_TRANSITIONS=1077} [2022-11-20 11:32:10,047 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 713 predicate places. [2022-11-20 11:32:10,047 INFO L495 AbstractCegarLoop]: Abstraction has has 801 places, 1077 transitions, 19783 flow [2022-11-20 11:32:10,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:10,047 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:10,047 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:10,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-11-20 11:32:10,047 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:32:10,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:10,048 INFO L85 PathProgramCache]: Analyzing trace with hash -2055406876, now seen corresponding path program 182 times [2022-11-20 11:32:10,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:10,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228588088] [2022-11-20 11:32:10,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:10,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:10,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:32:10,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:10,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228588088] [2022-11-20 11:32:10,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228588088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:10,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:10,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:32:10,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753984754] [2022-11-20 11:32:10,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:10,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:32:10,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:10,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:32:10,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:32:10,571 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:32:10,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 801 places, 1077 transitions, 19783 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:10,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:10,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:32:10,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:14,071 INFO L130 PetriNetUnfolder]: 753/2256 cut-off events. [2022-11-20 11:32:14,071 INFO L131 PetriNetUnfolder]: For 116775/116775 co-relation queries the response was YES. [2022-11-20 11:32:14,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24281 conditions, 2256 events. 753/2256 cut-off events. For 116775/116775 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 17481 event pairs, 46 based on Foata normal form. 1/2254 useless extension candidates. Maximal degree in co-relation 23987. Up to 1729 conditions per place. [2022-11-20 11:32:14,143 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 936 selfloop transitions, 113 changer transitions 22/1110 dead transitions. [2022-11-20 11:32:14,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 823 places, 1110 transitions, 22378 flow [2022-11-20 11:32:14,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:32:14,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 11:32:14,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1656 transitions. [2022-11-20 11:32:14,146 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5682910089224433 [2022-11-20 11:32:14,146 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1656 transitions. [2022-11-20 11:32:14,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1656 transitions. [2022-11-20 11:32:14,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:14,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1656 transitions. [2022-11-20 11:32:14,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.41935483870968) internal successors, (1656), 31 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:14,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:14,150 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:14,150 INFO L175 Difference]: Start difference. First operand has 801 places, 1077 transitions, 19783 flow. Second operand 31 states and 1656 transitions. [2022-11-20 11:32:14,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 823 places, 1110 transitions, 22378 flow [2022-11-20 11:32:15,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 788 places, 1110 transitions, 21807 flow, removed 39 selfloop flow, removed 35 redundant places. [2022-11-20 11:32:15,586 INFO L231 Difference]: Finished difference. Result has 796 places, 1070 transitions, 19443 flow [2022-11-20 11:32:15,586 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19222, PETRI_DIFFERENCE_MINUEND_PLACES=758, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1077, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=964, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=19443, PETRI_PLACES=796, PETRI_TRANSITIONS=1070} [2022-11-20 11:32:15,587 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 708 predicate places. [2022-11-20 11:32:15,587 INFO L495 AbstractCegarLoop]: Abstraction has has 796 places, 1070 transitions, 19443 flow [2022-11-20 11:32:15,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:15,587 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:15,587 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:15,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-11-20 11:32:15,588 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:32:15,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:15,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1453290080, now seen corresponding path program 183 times [2022-11-20 11:32:15,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:15,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136124711] [2022-11-20 11:32:15,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:15,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:16,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:32:16,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:16,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136124711] [2022-11-20 11:32:16,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136124711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:16,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:16,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:32:16,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390374770] [2022-11-20 11:32:16,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:16,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:32:16,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:16,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:32:16,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:32:16,146 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:32:16,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 796 places, 1070 transitions, 19443 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:16,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:16,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:32:16,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:19,684 INFO L130 PetriNetUnfolder]: 767/2286 cut-off events. [2022-11-20 11:32:19,684 INFO L131 PetriNetUnfolder]: For 117251/117251 co-relation queries the response was YES. [2022-11-20 11:32:19,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24522 conditions, 2286 events. 767/2286 cut-off events. For 117251/117251 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17688 event pairs, 38 based on Foata normal form. 1/2285 useless extension candidates. Maximal degree in co-relation 24230. Up to 1506 conditions per place. [2022-11-20 11:32:19,757 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 830 selfloop transitions, 264 changer transitions 24/1157 dead transitions. [2022-11-20 11:32:19,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 826 places, 1157 transitions, 23529 flow [2022-11-20 11:32:19,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-20 11:32:19,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-20 11:32:19,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2221 transitions. [2022-11-20 11:32:19,760 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5625633232016211 [2022-11-20 11:32:19,760 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2221 transitions. [2022-11-20 11:32:19,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2221 transitions. [2022-11-20 11:32:19,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:19,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2221 transitions. [2022-11-20 11:32:19,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 52.88095238095238) internal successors, (2221), 42 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:19,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:19,765 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:19,765 INFO L175 Difference]: Start difference. First operand has 796 places, 1070 transitions, 19443 flow. Second operand 42 states and 2221 transitions. [2022-11-20 11:32:19,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 826 places, 1157 transitions, 23529 flow [2022-11-20 11:32:21,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 796 places, 1157 transitions, 23240 flow, removed 22 selfloop flow, removed 30 redundant places. [2022-11-20 11:32:21,194 INFO L231 Difference]: Finished difference. Result has 805 places, 1097 transitions, 20550 flow [2022-11-20 11:32:21,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19180, PETRI_DIFFERENCE_MINUEND_PLACES=755, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1070, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=818, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=20550, PETRI_PLACES=805, PETRI_TRANSITIONS=1097} [2022-11-20 11:32:21,195 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 717 predicate places. [2022-11-20 11:32:21,195 INFO L495 AbstractCegarLoop]: Abstraction has has 805 places, 1097 transitions, 20550 flow [2022-11-20 11:32:21,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:21,196 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:21,196 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:21,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-11-20 11:32:21,197 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:32:21,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:21,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1113130446, now seen corresponding path program 184 times [2022-11-20 11:32:21,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:21,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452723504] [2022-11-20 11:32:21,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:21,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:21,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:32:21,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:21,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452723504] [2022-11-20 11:32:21,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452723504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:21,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:21,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:32:21,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105541511] [2022-11-20 11:32:21,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:21,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:32:21,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:21,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:32:21,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:32:21,821 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:32:21,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 805 places, 1097 transitions, 20550 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:21,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:21,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:32:21,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:24,513 INFO L130 PetriNetUnfolder]: 759/2273 cut-off events. [2022-11-20 11:32:24,513 INFO L131 PetriNetUnfolder]: For 120444/120444 co-relation queries the response was YES. [2022-11-20 11:32:24,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24715 conditions, 2273 events. 759/2273 cut-off events. For 120444/120444 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17633 event pairs, 48 based on Foata normal form. 1/2271 useless extension candidates. Maximal degree in co-relation 24423. Up to 1727 conditions per place. [2022-11-20 11:32:24,565 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 945 selfloop transitions, 123 changer transitions 21/1128 dead transitions. [2022-11-20 11:32:24,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 831 places, 1128 transitions, 23157 flow [2022-11-20 11:32:24,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:32:24,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:32:24,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1708 transitions. [2022-11-20 11:32:24,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5678191489361702 [2022-11-20 11:32:24,567 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1708 transitions. [2022-11-20 11:32:24,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1708 transitions. [2022-11-20 11:32:24,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:24,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1708 transitions. [2022-11-20 11:32:24,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.375) internal successors, (1708), 32 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:24,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:24,570 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:24,570 INFO L175 Difference]: Start difference. First operand has 805 places, 1097 transitions, 20550 flow. Second operand 32 states and 1708 transitions. [2022-11-20 11:32:24,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 831 places, 1128 transitions, 23157 flow [2022-11-20 11:32:25,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 801 places, 1128 transitions, 22643 flow, removed 161 selfloop flow, removed 30 redundant places. [2022-11-20 11:32:25,802 INFO L231 Difference]: Finished difference. Result has 809 places, 1090 transitions, 20292 flow [2022-11-20 11:32:25,803 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=20046, PETRI_DIFFERENCE_MINUEND_PLACES=770, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1097, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=974, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=20292, PETRI_PLACES=809, PETRI_TRANSITIONS=1090} [2022-11-20 11:32:25,803 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 721 predicate places. [2022-11-20 11:32:25,803 INFO L495 AbstractCegarLoop]: Abstraction has has 809 places, 1090 transitions, 20292 flow [2022-11-20 11:32:25,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:25,804 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:25,804 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:25,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2022-11-20 11:32:25,804 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:32:25,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:25,805 INFO L85 PathProgramCache]: Analyzing trace with hash -128343728, now seen corresponding path program 185 times [2022-11-20 11:32:25,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:25,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745766331] [2022-11-20 11:32:25,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:25,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:26,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:32:26,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:26,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745766331] [2022-11-20 11:32:26,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745766331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:26,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:26,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:32:26,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635882065] [2022-11-20 11:32:26,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:26,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:32:26,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:26,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:32:26,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:32:26,303 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:32:26,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 809 places, 1090 transitions, 20292 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:26,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:26,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:32:26,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:29,644 INFO L130 PetriNetUnfolder]: 762/2284 cut-off events. [2022-11-20 11:32:29,644 INFO L131 PetriNetUnfolder]: For 110537/110537 co-relation queries the response was YES. [2022-11-20 11:32:29,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24410 conditions, 2284 events. 762/2284 cut-off events. For 110537/110537 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17663 event pairs, 47 based on Foata normal form. 1/2282 useless extension candidates. Maximal degree in co-relation 24113. Up to 1682 conditions per place. [2022-11-20 11:32:29,706 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 890 selfloop transitions, 193 changer transitions 20/1142 dead transitions. [2022-11-20 11:32:29,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 838 places, 1142 transitions, 23768 flow [2022-11-20 11:32:29,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 11:32:29,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-20 11:32:29,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2174 transitions. [2022-11-20 11:32:29,708 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5640892579138558 [2022-11-20 11:32:29,708 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2174 transitions. [2022-11-20 11:32:29,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2174 transitions. [2022-11-20 11:32:29,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:29,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2174 transitions. [2022-11-20 11:32:29,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 53.02439024390244) internal successors, (2174), 41 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:29,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:29,712 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:29,712 INFO L175 Difference]: Start difference. First operand has 809 places, 1090 transitions, 20292 flow. Second operand 41 states and 2174 transitions. [2022-11-20 11:32:29,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 838 places, 1142 transitions, 23768 flow [2022-11-20 11:32:30,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 806 places, 1142 transitions, 23432 flow, removed 30 selfloop flow, removed 32 redundant places. [2022-11-20 11:32:30,996 INFO L231 Difference]: Finished difference. Result has 817 places, 1101 transitions, 20870 flow [2022-11-20 11:32:30,997 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=19994, PETRI_DIFFERENCE_MINUEND_PLACES=766, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1090, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=903, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=20870, PETRI_PLACES=817, PETRI_TRANSITIONS=1101} [2022-11-20 11:32:30,997 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 729 predicate places. [2022-11-20 11:32:30,997 INFO L495 AbstractCegarLoop]: Abstraction has has 817 places, 1101 transitions, 20870 flow [2022-11-20 11:32:30,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:30,998 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:30,998 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:30,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2022-11-20 11:32:30,998 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:32:30,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:30,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1481517968, now seen corresponding path program 186 times [2022-11-20 11:32:30,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:30,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817149359] [2022-11-20 11:32:30,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:30,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:32:31,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:31,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817149359] [2022-11-20 11:32:31,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817149359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:31,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:31,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:32:31,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975876956] [2022-11-20 11:32:31,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:31,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:32:31,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:31,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:32:31,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:32:31,532 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:32:31,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 817 places, 1101 transitions, 20870 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:31,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:31,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:32:31,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:34,972 INFO L130 PetriNetUnfolder]: 771/2284 cut-off events. [2022-11-20 11:32:34,972 INFO L131 PetriNetUnfolder]: For 115339/115339 co-relation queries the response was YES. [2022-11-20 11:32:35,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24996 conditions, 2284 events. 771/2284 cut-off events. For 115339/115339 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 17704 event pairs, 46 based on Foata normal form. 1/2283 useless extension candidates. Maximal degree in co-relation 24698. Up to 1660 conditions per place. [2022-11-20 11:32:35,044 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 902 selfloop transitions, 187 changer transitions 30/1158 dead transitions. [2022-11-20 11:32:35,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 847 places, 1158 transitions, 24454 flow [2022-11-20 11:32:35,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:32:35,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:32:35,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1957 transitions. [2022-11-20 11:32:35,047 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5626797009775734 [2022-11-20 11:32:35,047 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1957 transitions. [2022-11-20 11:32:35,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1957 transitions. [2022-11-20 11:32:35,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:35,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1957 transitions. [2022-11-20 11:32:35,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.891891891891895) internal successors, (1957), 37 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:35,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:35,053 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:35,053 INFO L175 Difference]: Start difference. First operand has 817 places, 1101 transitions, 20870 flow. Second operand 37 states and 1957 transitions. [2022-11-20 11:32:35,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 847 places, 1158 transitions, 24454 flow [2022-11-20 11:32:36,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 816 places, 1158 transitions, 23828 flow, removed 180 selfloop flow, removed 31 redundant places. [2022-11-20 11:32:36,700 INFO L231 Difference]: Finished difference. Result has 826 places, 1107 transitions, 21120 flow [2022-11-20 11:32:36,701 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=20270, PETRI_DIFFERENCE_MINUEND_PLACES=780, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=915, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=21120, PETRI_PLACES=826, PETRI_TRANSITIONS=1107} [2022-11-20 11:32:36,701 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 738 predicate places. [2022-11-20 11:32:36,701 INFO L495 AbstractCegarLoop]: Abstraction has has 826 places, 1107 transitions, 21120 flow [2022-11-20 11:32:36,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:36,702 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:36,702 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:36,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-11-20 11:32:36,702 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:32:36,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:36,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1756791472, now seen corresponding path program 187 times [2022-11-20 11:32:36,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:36,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482731890] [2022-11-20 11:32:36,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:36,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:32:37,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:37,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482731890] [2022-11-20 11:32:37,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482731890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:37,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:37,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:32:37,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517344997] [2022-11-20 11:32:37,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:37,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:32:37,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:37,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:32:37,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:32:37,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:32:37,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 826 places, 1107 transitions, 21120 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:37,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:37,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:32:37,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:41,149 INFO L130 PetriNetUnfolder]: 758/2264 cut-off events. [2022-11-20 11:32:41,149 INFO L131 PetriNetUnfolder]: For 108428/108428 co-relation queries the response was YES. [2022-11-20 11:32:41,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24494 conditions, 2264 events. 758/2264 cut-off events. For 108428/108428 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17545 event pairs, 52 based on Foata normal form. 1/2262 useless extension candidates. Maximal degree in co-relation 24194. Up to 1698 conditions per place. [2022-11-20 11:32:41,218 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 929 selfloop transitions, 150 changer transitions 21/1139 dead transitions. [2022-11-20 11:32:41,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 854 places, 1139 transitions, 23775 flow [2022-11-20 11:32:41,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 11:32:41,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 11:32:41,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2015 transitions. [2022-11-20 11:32:41,221 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5641097424412094 [2022-11-20 11:32:41,222 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2015 transitions. [2022-11-20 11:32:41,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2015 transitions. [2022-11-20 11:32:41,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:41,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2015 transitions. [2022-11-20 11:32:41,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 53.026315789473685) internal successors, (2015), 38 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:41,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:41,227 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:41,228 INFO L175 Difference]: Start difference. First operand has 826 places, 1107 transitions, 21120 flow. Second operand 38 states and 2015 transitions. [2022-11-20 11:32:41,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 854 places, 1139 transitions, 23775 flow [2022-11-20 11:32:42,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 824 places, 1139 transitions, 23195 flow, removed 108 selfloop flow, removed 30 redundant places. [2022-11-20 11:32:42,819 INFO L231 Difference]: Finished difference. Result has 832 places, 1100 transitions, 20852 flow [2022-11-20 11:32:42,820 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=20552, PETRI_DIFFERENCE_MINUEND_PLACES=787, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=957, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=20852, PETRI_PLACES=832, PETRI_TRANSITIONS=1100} [2022-11-20 11:32:42,820 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 744 predicate places. [2022-11-20 11:32:42,820 INFO L495 AbstractCegarLoop]: Abstraction has has 832 places, 1100 transitions, 20852 flow [2022-11-20 11:32:42,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:42,820 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:42,821 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:42,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-11-20 11:32:42,821 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:32:42,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:42,821 INFO L85 PathProgramCache]: Analyzing trace with hash 185541212, now seen corresponding path program 188 times [2022-11-20 11:32:42,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:42,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091918485] [2022-11-20 11:32:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:42,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:43,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:32:43,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:43,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091918485] [2022-11-20 11:32:43,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091918485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:43,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:43,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:32:43,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246166943] [2022-11-20 11:32:43,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:43,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:32:43,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:43,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:32:43,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:32:43,388 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:32:43,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 832 places, 1100 transitions, 20852 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:43,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:43,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:32:43,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:47,294 INFO L130 PetriNetUnfolder]: 800/2429 cut-off events. [2022-11-20 11:32:47,295 INFO L131 PetriNetUnfolder]: For 114538/114538 co-relation queries the response was YES. [2022-11-20 11:32:47,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25882 conditions, 2429 events. 800/2429 cut-off events. For 114538/114538 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19283 event pairs, 44 based on Foata normal form. 1/2427 useless extension candidates. Maximal degree in co-relation 25582. Up to 1764 conditions per place. [2022-11-20 11:32:47,377 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 972 selfloop transitions, 183 changer transitions 21/1215 dead transitions. [2022-11-20 11:32:47,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 857 places, 1215 transitions, 25681 flow [2022-11-20 11:32:47,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:32:47,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:32:47,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1974 transitions. [2022-11-20 11:32:47,380 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2022-11-20 11:32:47,380 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1974 transitions. [2022-11-20 11:32:47,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1974 transitions. [2022-11-20 11:32:47,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:47,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1974 transitions. [2022-11-20 11:32:47,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 53.351351351351354) internal successors, (1974), 37 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:47,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:47,384 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:47,384 INFO L175 Difference]: Start difference. First operand has 832 places, 1100 transitions, 20852 flow. Second operand 37 states and 1974 transitions. [2022-11-20 11:32:47,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 857 places, 1215 transitions, 25681 flow [2022-11-20 11:32:49,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 818 places, 1215 transitions, 25275 flow, removed 24 selfloop flow, removed 39 redundant places. [2022-11-20 11:32:49,053 INFO L231 Difference]: Finished difference. Result has 830 places, 1166 transitions, 22597 flow [2022-11-20 11:32:49,053 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=20478, PETRI_DIFFERENCE_MINUEND_PLACES=782, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=929, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=22597, PETRI_PLACES=830, PETRI_TRANSITIONS=1166} [2022-11-20 11:32:49,053 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 742 predicate places. [2022-11-20 11:32:49,054 INFO L495 AbstractCegarLoop]: Abstraction has has 830 places, 1166 transitions, 22597 flow [2022-11-20 11:32:49,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:49,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:49,054 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:49,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-11-20 11:32:49,054 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:32:49,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:49,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1539390926, now seen corresponding path program 189 times [2022-11-20 11:32:49,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:49,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546536359] [2022-11-20 11:32:49,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:49,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:32:49,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:49,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546536359] [2022-11-20 11:32:49,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546536359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:49,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:49,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:32:49,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867201907] [2022-11-20 11:32:49,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:49,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:32:49,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:49,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:32:49,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:32:49,615 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:32:49,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 830 places, 1166 transitions, 22597 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:49,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:49,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:32:49,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:53,749 INFO L130 PetriNetUnfolder]: 793/2422 cut-off events. [2022-11-20 11:32:53,749 INFO L131 PetriNetUnfolder]: For 119783/119783 co-relation queries the response was YES. [2022-11-20 11:32:53,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26055 conditions, 2422 events. 793/2422 cut-off events. For 119783/119783 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 19327 event pairs, 46 based on Foata normal form. 1/2421 useless extension candidates. Maximal degree in co-relation 25753. Up to 1840 conditions per place. [2022-11-20 11:32:53,829 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1032 selfloop transitions, 110 changer transitions 21/1202 dead transitions. [2022-11-20 11:32:53,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 860 places, 1202 transitions, 25621 flow [2022-11-20 11:32:53,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:32:53,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:32:53,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1939 transitions. [2022-11-20 11:32:53,832 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5575043128234618 [2022-11-20 11:32:53,832 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1939 transitions. [2022-11-20 11:32:53,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1939 transitions. [2022-11-20 11:32:53,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:53,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1939 transitions. [2022-11-20 11:32:53,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.4054054054054) internal successors, (1939), 37 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:53,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:53,839 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:53,840 INFO L175 Difference]: Start difference. First operand has 830 places, 1166 transitions, 22597 flow. Second operand 37 states and 1939 transitions. [2022-11-20 11:32:53,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 860 places, 1202 transitions, 25621 flow [2022-11-20 11:32:55,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 839 places, 1202 transitions, 24887 flow, removed 307 selfloop flow, removed 21 redundant places. [2022-11-20 11:32:55,447 INFO L231 Difference]: Finished difference. Result has 850 places, 1166 transitions, 22210 flow [2022-11-20 11:32:55,447 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21867, PETRI_DIFFERENCE_MINUEND_PLACES=803, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1056, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=22210, PETRI_PLACES=850, PETRI_TRANSITIONS=1166} [2022-11-20 11:32:55,447 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 762 predicate places. [2022-11-20 11:32:55,447 INFO L495 AbstractCegarLoop]: Abstraction has has 850 places, 1166 transitions, 22210 flow [2022-11-20 11:32:55,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:55,448 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:55,448 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:55,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-11-20 11:32:55,448 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:32:55,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:55,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1415515106, now seen corresponding path program 190 times [2022-11-20 11:32:55,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:55,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258105555] [2022-11-20 11:32:55,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:55,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:55,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:32:55,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:55,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258105555] [2022-11-20 11:32:55,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258105555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:55,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:55,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:32:55,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484922385] [2022-11-20 11:32:55,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:55,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:32:55,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:55,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:32:55,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:32:55,971 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:32:55,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 850 places, 1166 transitions, 22210 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:55,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:55,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:32:55,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:59,359 INFO L130 PetriNetUnfolder]: 785/2403 cut-off events. [2022-11-20 11:32:59,359 INFO L131 PetriNetUnfolder]: For 119360/119360 co-relation queries the response was YES. [2022-11-20 11:32:59,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25626 conditions, 2403 events. 785/2403 cut-off events. For 119360/119360 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19132 event pairs, 47 based on Foata normal form. 1/2401 useless extension candidates. Maximal degree in co-relation 25314. Up to 1838 conditions per place. [2022-11-20 11:32:59,441 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1031 selfloop transitions, 79 changer transitions 40/1189 dead transitions. [2022-11-20 11:32:59,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 876 places, 1189 transitions, 24703 flow [2022-11-20 11:32:59,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:32:59,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:32:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1783 transitions. [2022-11-20 11:32:59,444 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5578848560700876 [2022-11-20 11:32:59,444 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1783 transitions. [2022-11-20 11:32:59,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1783 transitions. [2022-11-20 11:32:59,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:59,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1783 transitions. [2022-11-20 11:32:59,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.44117647058823) internal successors, (1783), 34 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:59,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:59,448 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:59,448 INFO L175 Difference]: Start difference. First operand has 850 places, 1166 transitions, 22210 flow. Second operand 34 states and 1783 transitions. [2022-11-20 11:32:59,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 876 places, 1189 transitions, 24703 flow [2022-11-20 11:33:01,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 842 places, 1189 transitions, 24397 flow, removed 53 selfloop flow, removed 34 redundant places. [2022-11-20 11:33:01,146 INFO L231 Difference]: Finished difference. Result has 846 places, 1135 transitions, 21279 flow [2022-11-20 11:33:01,147 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21912, PETRI_DIFFERENCE_MINUEND_PLACES=809, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1087, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=21279, PETRI_PLACES=846, PETRI_TRANSITIONS=1135} [2022-11-20 11:33:01,147 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 758 predicate places. [2022-11-20 11:33:01,147 INFO L495 AbstractCegarLoop]: Abstraction has has 846 places, 1135 transitions, 21279 flow [2022-11-20 11:33:01,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:01,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:01,147 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:33:01,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2022-11-20 11:33:01,148 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:33:01,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:01,148 INFO L85 PathProgramCache]: Analyzing trace with hash -319262602, now seen corresponding path program 191 times [2022-11-20 11:33:01,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:01,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791189104] [2022-11-20 11:33:01,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:01,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:01,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:33:01,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:01,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791189104] [2022-11-20 11:33:01,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791189104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:01,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:01,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:33:01,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786301651] [2022-11-20 11:33:01,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:01,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:33:01,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:01,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:33:01,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:33:01,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:33:01,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 846 places, 1135 transitions, 21279 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:01,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:01,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:33:01,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:05,551 INFO L130 PetriNetUnfolder]: 793/2413 cut-off events. [2022-11-20 11:33:05,551 INFO L131 PetriNetUnfolder]: For 121800/121800 co-relation queries the response was YES. [2022-11-20 11:33:05,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25708 conditions, 2413 events. 793/2413 cut-off events. For 121800/121800 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19267 event pairs, 49 based on Foata normal form. 1/2411 useless extension candidates. Maximal degree in co-relation 25400. Up to 1817 conditions per place. [2022-11-20 11:33:05,621 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 995 selfloop transitions, 125 changer transitions 22/1181 dead transitions. [2022-11-20 11:33:05,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 859 places, 1181 transitions, 24699 flow [2022-11-20 11:33:05,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:33:05,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:33:05,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1954 transitions. [2022-11-20 11:33:05,624 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5618171362852213 [2022-11-20 11:33:05,624 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1954 transitions. [2022-11-20 11:33:05,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1954 transitions. [2022-11-20 11:33:05,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:05,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1954 transitions. [2022-11-20 11:33:05,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.810810810810814) internal successors, (1954), 37 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:05,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:05,628 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:05,628 INFO L175 Difference]: Start difference. First operand has 846 places, 1135 transitions, 21279 flow. Second operand 37 states and 1954 transitions. [2022-11-20 11:33:05,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 859 places, 1181 transitions, 24699 flow [2022-11-20 11:33:07,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 821 places, 1181 transitions, 24265 flow, removed 84 selfloop flow, removed 38 redundant places. [2022-11-20 11:33:07,222 INFO L231 Difference]: Finished difference. Result has 832 places, 1145 transitions, 21504 flow [2022-11-20 11:33:07,223 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=20861, PETRI_DIFFERENCE_MINUEND_PLACES=785, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1011, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=21504, PETRI_PLACES=832, PETRI_TRANSITIONS=1145} [2022-11-20 11:33:07,223 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 744 predicate places. [2022-11-20 11:33:07,223 INFO L495 AbstractCegarLoop]: Abstraction has has 832 places, 1145 transitions, 21504 flow [2022-11-20 11:33:07,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:07,223 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:07,223 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:33:07,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-11-20 11:33:07,224 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:33:07,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:07,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1361768090, now seen corresponding path program 192 times [2022-11-20 11:33:07,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:07,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700602809] [2022-11-20 11:33:07,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:07,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:07,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:33:07,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:07,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700602809] [2022-11-20 11:33:07,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700602809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:07,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:07,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:33:07,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779292435] [2022-11-20 11:33:07,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:07,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:33:07,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:07,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:33:07,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:33:07,776 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:33:07,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 832 places, 1145 transitions, 21504 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:07,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:07,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:33:07,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:11,233 INFO L130 PetriNetUnfolder]: 787/2411 cut-off events. [2022-11-20 11:33:11,233 INFO L131 PetriNetUnfolder]: For 124172/124172 co-relation queries the response was YES. [2022-11-20 11:33:11,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25751 conditions, 2411 events. 787/2411 cut-off events. For 124172/124172 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19285 event pairs, 48 based on Foata normal form. 1/2409 useless extension candidates. Maximal degree in co-relation 25445. Up to 1732 conditions per place. [2022-11-20 11:33:11,313 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 955 selfloop transitions, 179 changer transitions 28/1201 dead transitions. [2022-11-20 11:33:11,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 860 places, 1201 transitions, 25157 flow [2022-11-20 11:33:11,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:33:11,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:33:11,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1871 transitions. [2022-11-20 11:33:11,316 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.568693009118541 [2022-11-20 11:33:11,316 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1871 transitions. [2022-11-20 11:33:11,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1871 transitions. [2022-11-20 11:33:11,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:11,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1871 transitions. [2022-11-20 11:33:11,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.457142857142856) internal successors, (1871), 35 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:11,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:11,320 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:11,320 INFO L175 Difference]: Start difference. First operand has 832 places, 1145 transitions, 21504 flow. Second operand 35 states and 1871 transitions. [2022-11-20 11:33:11,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 860 places, 1201 transitions, 25157 flow [2022-11-20 11:33:13,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 829 places, 1201 transitions, 24752 flow, removed 116 selfloop flow, removed 31 redundant places. [2022-11-20 11:33:13,038 INFO L231 Difference]: Finished difference. Result has 836 places, 1146 transitions, 21794 flow [2022-11-20 11:33:13,038 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21115, PETRI_DIFFERENCE_MINUEND_PLACES=795, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=970, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=21794, PETRI_PLACES=836, PETRI_TRANSITIONS=1146} [2022-11-20 11:33:13,038 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 748 predicate places. [2022-11-20 11:33:13,039 INFO L495 AbstractCegarLoop]: Abstraction has has 836 places, 1146 transitions, 21794 flow [2022-11-20 11:33:13,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:13,039 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:13,039 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:33:13,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-11-20 11:33:13,039 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:33:13,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:13,040 INFO L85 PathProgramCache]: Analyzing trace with hash -886615148, now seen corresponding path program 193 times [2022-11-20 11:33:13,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:13,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161692545] [2022-11-20 11:33:13,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:13,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:13,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:33:13,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:13,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161692545] [2022-11-20 11:33:13,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161692545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:13,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:13,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:33:13,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332332011] [2022-11-20 11:33:13,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:13,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:33:13,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:13,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:33:13,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:33:13,552 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:33:13,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 836 places, 1146 transitions, 21794 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:13,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:13,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:33:13,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:17,360 INFO L130 PetriNetUnfolder]: 785/2379 cut-off events. [2022-11-20 11:33:17,361 INFO L131 PetriNetUnfolder]: For 127641/127641 co-relation queries the response was YES. [2022-11-20 11:33:17,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25954 conditions, 2379 events. 785/2379 cut-off events. For 127641/127641 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 18855 event pairs, 48 based on Foata normal form. 1/2377 useless extension candidates. Maximal degree in co-relation 25647. Up to 1755 conditions per place. [2022-11-20 11:33:17,436 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 988 selfloop transitions, 160 changer transitions 18/1205 dead transitions. [2022-11-20 11:33:17,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 864 places, 1205 transitions, 25781 flow [2022-11-20 11:33:17,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:33:17,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:33:17,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1817 transitions. [2022-11-20 11:33:17,439 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.568523153942428 [2022-11-20 11:33:17,439 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1817 transitions. [2022-11-20 11:33:17,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1817 transitions. [2022-11-20 11:33:17,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:17,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1817 transitions. [2022-11-20 11:33:17,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.44117647058823) internal successors, (1817), 34 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:17,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:17,443 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:17,443 INFO L175 Difference]: Start difference. First operand has 836 places, 1146 transitions, 21794 flow. Second operand 34 states and 1817 transitions. [2022-11-20 11:33:17,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 864 places, 1205 transitions, 25781 flow [2022-11-20 11:33:19,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 836 places, 1205 transitions, 25030 flow, removed 288 selfloop flow, removed 28 redundant places. [2022-11-20 11:33:19,129 INFO L231 Difference]: Finished difference. Result has 843 places, 1160 transitions, 22200 flow [2022-11-20 11:33:19,129 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21317, PETRI_DIFFERENCE_MINUEND_PLACES=803, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=993, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=22200, PETRI_PLACES=843, PETRI_TRANSITIONS=1160} [2022-11-20 11:33:19,130 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 755 predicate places. [2022-11-20 11:33:19,130 INFO L495 AbstractCegarLoop]: Abstraction has has 843 places, 1160 transitions, 22200 flow [2022-11-20 11:33:19,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:19,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:19,130 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:33:19,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-11-20 11:33:19,131 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:33:19,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:19,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1194990230, now seen corresponding path program 194 times [2022-11-20 11:33:19,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:19,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530887654] [2022-11-20 11:33:19,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:19,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:19,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:33:19,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:19,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530887654] [2022-11-20 11:33:19,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530887654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:19,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:19,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:33:19,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7091158] [2022-11-20 11:33:19,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:19,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:33:19,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:19,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:33:19,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:33:19,683 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:33:19,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 843 places, 1160 transitions, 22200 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:19,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:19,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:33:19,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:23,340 INFO L130 PetriNetUnfolder]: 784/2382 cut-off events. [2022-11-20 11:33:23,340 INFO L131 PetriNetUnfolder]: For 116847/116847 co-relation queries the response was YES. [2022-11-20 11:33:23,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25553 conditions, 2382 events. 784/2382 cut-off events. For 116847/116847 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 18876 event pairs, 50 based on Foata normal form. 1/2380 useless extension candidates. Maximal degree in co-relation 25243. Up to 1767 conditions per place. [2022-11-20 11:33:23,415 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1003 selfloop transitions, 140 changer transitions 21/1203 dead transitions. [2022-11-20 11:33:23,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 873 places, 1203 transitions, 25285 flow [2022-11-20 11:33:23,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:33:23,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 11:33:23,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1912 transitions. [2022-11-20 11:33:23,418 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2022-11-20 11:33:23,418 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1912 transitions. [2022-11-20 11:33:23,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1912 transitions. [2022-11-20 11:33:23,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:23,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1912 transitions. [2022-11-20 11:33:23,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.111111111111114) internal successors, (1912), 36 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:23,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:23,422 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:23,422 INFO L175 Difference]: Start difference. First operand has 843 places, 1160 transitions, 22200 flow. Second operand 36 states and 1912 transitions. [2022-11-20 11:33:23,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 873 places, 1203 transitions, 25285 flow [2022-11-20 11:33:25,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 847 places, 1203 transitions, 24752 flow, removed 170 selfloop flow, removed 26 redundant places. [2022-11-20 11:33:25,144 INFO L231 Difference]: Finished difference. Result has 858 places, 1160 transitions, 22019 flow [2022-11-20 11:33:25,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21689, PETRI_DIFFERENCE_MINUEND_PLACES=812, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1021, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=22019, PETRI_PLACES=858, PETRI_TRANSITIONS=1160} [2022-11-20 11:33:25,144 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 770 predicate places. [2022-11-20 11:33:25,145 INFO L495 AbstractCegarLoop]: Abstraction has has 858 places, 1160 transitions, 22019 flow [2022-11-20 11:33:25,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:25,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:25,145 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:33:25,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2022-11-20 11:33:25,145 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:33:25,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:25,146 INFO L85 PathProgramCache]: Analyzing trace with hash -433775950, now seen corresponding path program 195 times [2022-11-20 11:33:25,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:25,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292302544] [2022-11-20 11:33:25,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:25,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:25,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:33:25,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:25,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292302544] [2022-11-20 11:33:25,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292302544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:25,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:25,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:33:25,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913901403] [2022-11-20 11:33:25,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:25,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:33:25,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:25,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:33:25,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:33:25,689 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:33:25,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 858 places, 1160 transitions, 22019 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:25,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:25,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:33:25,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:29,499 INFO L130 PetriNetUnfolder]: 789/2395 cut-off events. [2022-11-20 11:33:29,499 INFO L131 PetriNetUnfolder]: For 117921/117921 co-relation queries the response was YES. [2022-11-20 11:33:29,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25787 conditions, 2395 events. 789/2395 cut-off events. For 117921/117921 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19102 event pairs, 47 based on Foata normal form. 1/2393 useless extension candidates. Maximal degree in co-relation 25470. Up to 1824 conditions per place. [2022-11-20 11:33:29,572 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1030 selfloop transitions, 120 changer transitions 20/1209 dead transitions. [2022-11-20 11:33:29,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 882 places, 1209 transitions, 25571 flow [2022-11-20 11:33:29,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:33:29,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:33:29,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1817 transitions. [2022-11-20 11:33:29,575 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.568523153942428 [2022-11-20 11:33:29,575 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1817 transitions. [2022-11-20 11:33:29,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1817 transitions. [2022-11-20 11:33:29,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:29,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1817 transitions. [2022-11-20 11:33:29,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.44117647058823) internal successors, (1817), 34 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:29,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:29,580 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:29,580 INFO L175 Difference]: Start difference. First operand has 858 places, 1160 transitions, 22019 flow. Second operand 34 states and 1817 transitions. [2022-11-20 11:33:29,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 882 places, 1209 transitions, 25571 flow [2022-11-20 11:33:31,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 848 places, 1209 transitions, 25214 flow, removed 23 selfloop flow, removed 34 redundant places. [2022-11-20 11:33:31,354 INFO L231 Difference]: Finished difference. Result has 855 places, 1169 transitions, 22329 flow [2022-11-20 11:33:31,355 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21680, PETRI_DIFFERENCE_MINUEND_PLACES=815, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1046, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=22329, PETRI_PLACES=855, PETRI_TRANSITIONS=1169} [2022-11-20 11:33:31,355 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 767 predicate places. [2022-11-20 11:33:31,355 INFO L495 AbstractCegarLoop]: Abstraction has has 855 places, 1169 transitions, 22329 flow [2022-11-20 11:33:31,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:31,355 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:31,356 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:33:31,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-11-20 11:33:31,356 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:33:31,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:31,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1708592440, now seen corresponding path program 196 times [2022-11-20 11:33:31,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:31,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249472584] [2022-11-20 11:33:31,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:31,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:31,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:33:31,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:31,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249472584] [2022-11-20 11:33:31,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249472584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:31,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:31,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:33:31,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388624435] [2022-11-20 11:33:31,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:31,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:33:31,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:31,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:33:31,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:33:31,874 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:33:31,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 855 places, 1169 transitions, 22329 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:31,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:31,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:33:31,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:35,989 INFO L130 PetriNetUnfolder]: 794/2416 cut-off events. [2022-11-20 11:33:35,989 INFO L131 PetriNetUnfolder]: For 124711/124711 co-relation queries the response was YES. [2022-11-20 11:33:36,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26144 conditions, 2416 events. 794/2416 cut-off events. For 124711/124711 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19301 event pairs, 44 based on Foata normal form. 1/2414 useless extension candidates. Maximal degree in co-relation 25830. Up to 1829 conditions per place. [2022-11-20 11:33:36,071 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1029 selfloop transitions, 133 changer transitions 22/1223 dead transitions. [2022-11-20 11:33:36,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 889 places, 1223 transitions, 26115 flow [2022-11-20 11:33:36,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 11:33:36,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-20 11:33:36,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2121 transitions. [2022-11-20 11:33:36,075 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5640957446808511 [2022-11-20 11:33:36,075 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2121 transitions. [2022-11-20 11:33:36,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2121 transitions. [2022-11-20 11:33:36,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:36,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2121 transitions. [2022-11-20 11:33:36,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.025) internal successors, (2121), 40 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:36,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:36,080 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:36,080 INFO L175 Difference]: Start difference. First operand has 855 places, 1169 transitions, 22329 flow. Second operand 40 states and 2121 transitions. [2022-11-20 11:33:36,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 889 places, 1223 transitions, 26115 flow [2022-11-20 11:33:37,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 862 places, 1223 transitions, 25647 flow, removed 145 selfloop flow, removed 27 redundant places. [2022-11-20 11:33:38,020 INFO L231 Difference]: Finished difference. Result has 874 places, 1182 transitions, 22713 flow [2022-11-20 11:33:38,021 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=21891, PETRI_DIFFERENCE_MINUEND_PLACES=823, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1042, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=22713, PETRI_PLACES=874, PETRI_TRANSITIONS=1182} [2022-11-20 11:33:38,021 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 786 predicate places. [2022-11-20 11:33:38,021 INFO L495 AbstractCegarLoop]: Abstraction has has 874 places, 1182 transitions, 22713 flow [2022-11-20 11:33:38,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:38,021 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:38,022 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:33:38,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2022-11-20 11:33:38,022 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:33:38,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:38,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1346733674, now seen corresponding path program 197 times [2022-11-20 11:33:38,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:38,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187878002] [2022-11-20 11:33:38,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:38,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:38,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:33:38,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:38,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187878002] [2022-11-20 11:33:38,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187878002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:38,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:38,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:33:38,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770928289] [2022-11-20 11:33:38,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:38,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:33:38,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:38,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:33:38,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:33:38,538 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:33:38,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 874 places, 1182 transitions, 22713 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:38,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:38,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:33:38,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:42,576 INFO L130 PetriNetUnfolder]: 789/2402 cut-off events. [2022-11-20 11:33:42,576 INFO L131 PetriNetUnfolder]: For 123716/123716 co-relation queries the response was YES. [2022-11-20 11:33:42,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25988 conditions, 2402 events. 789/2402 cut-off events. For 123716/123716 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 19149 event pairs, 46 based on Foata normal form. 1/2400 useless extension candidates. Maximal degree in co-relation 25667. Up to 1827 conditions per place. [2022-11-20 11:33:42,663 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1032 selfloop transitions, 118 changer transitions 26/1215 dead transitions. [2022-11-20 11:33:42,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 904 places, 1215 transitions, 25600 flow [2022-11-20 11:33:42,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:33:42,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:33:42,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1963 transitions. [2022-11-20 11:33:42,666 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644048303622772 [2022-11-20 11:33:42,666 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1963 transitions. [2022-11-20 11:33:42,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1963 transitions. [2022-11-20 11:33:42,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:42,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1963 transitions. [2022-11-20 11:33:42,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 53.054054054054056) internal successors, (1963), 37 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:42,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:42,674 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:42,675 INFO L175 Difference]: Start difference. First operand has 874 places, 1182 transitions, 22713 flow. Second operand 37 states and 1963 transitions. [2022-11-20 11:33:42,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 904 places, 1215 transitions, 25600 flow [2022-11-20 11:33:44,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 877 places, 1215 transitions, 24967 flow, removed 234 selfloop flow, removed 27 redundant places. [2022-11-20 11:33:44,607 INFO L231 Difference]: Finished difference. Result has 884 places, 1174 transitions, 22327 flow [2022-11-20 11:33:44,607 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22146, PETRI_DIFFERENCE_MINUEND_PLACES=841, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1064, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=22327, PETRI_PLACES=884, PETRI_TRANSITIONS=1174} [2022-11-20 11:33:44,608 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 796 predicate places. [2022-11-20 11:33:44,608 INFO L495 AbstractCegarLoop]: Abstraction has has 884 places, 1174 transitions, 22327 flow [2022-11-20 11:33:44,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:44,608 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:44,608 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:33:44,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2022-11-20 11:33:44,608 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:33:44,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:44,609 INFO L85 PathProgramCache]: Analyzing trace with hash 537913260, now seen corresponding path program 198 times [2022-11-20 11:33:44,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:44,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472702558] [2022-11-20 11:33:44,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:44,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:45,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:33:45,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:45,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472702558] [2022-11-20 11:33:45,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472702558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:45,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:45,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:33:45,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553583091] [2022-11-20 11:33:45,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:45,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:33:45,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:45,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:33:45,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:33:45,070 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:33:45,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 884 places, 1174 transitions, 22327 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:45,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:45,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:33:45,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:48,437 INFO L130 PetriNetUnfolder]: 800/2439 cut-off events. [2022-11-20 11:33:48,438 INFO L131 PetriNetUnfolder]: For 122422/122422 co-relation queries the response was YES. [2022-11-20 11:33:48,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26271 conditions, 2439 events. 800/2439 cut-off events. For 122422/122422 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 19548 event pairs, 44 based on Foata normal form. 1/2437 useless extension candidates. Maximal degree in co-relation 25949. Up to 1837 conditions per place. [2022-11-20 11:33:48,523 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1041 selfloop transitions, 130 changer transitions 29/1239 dead transitions. [2022-11-20 11:33:48,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 1239 transitions, 26078 flow [2022-11-20 11:33:48,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 11:33:48,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 11:33:48,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1767 transitions. [2022-11-20 11:33:48,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5696324951644101 [2022-11-20 11:33:48,526 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1767 transitions. [2022-11-20 11:33:48,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1767 transitions. [2022-11-20 11:33:48,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:48,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1767 transitions. [2022-11-20 11:33:48,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.54545454545455) internal successors, (1767), 33 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:48,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:48,530 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:48,530 INFO L175 Difference]: Start difference. First operand has 884 places, 1174 transitions, 22327 flow. Second operand 33 states and 1767 transitions. [2022-11-20 11:33:48,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 905 places, 1239 transitions, 26078 flow [2022-11-20 11:33:50,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 866 places, 1239 transitions, 25733 flow, removed 27 selfloop flow, removed 39 redundant places. [2022-11-20 11:33:50,557 INFO L231 Difference]: Finished difference. Result has 876 places, 1191 transitions, 22821 flow [2022-11-20 11:33:50,557 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22014, PETRI_DIFFERENCE_MINUEND_PLACES=834, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1047, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=22821, PETRI_PLACES=876, PETRI_TRANSITIONS=1191} [2022-11-20 11:33:50,557 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 788 predicate places. [2022-11-20 11:33:50,558 INFO L495 AbstractCegarLoop]: Abstraction has has 876 places, 1191 transitions, 22821 flow [2022-11-20 11:33:50,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:50,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:50,558 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:33:50,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2022-11-20 11:33:50,558 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:33:50,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:50,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1249135654, now seen corresponding path program 199 times [2022-11-20 11:33:50,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:50,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415489599] [2022-11-20 11:33:50,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:50,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:33:51,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:51,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415489599] [2022-11-20 11:33:51,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415489599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:51,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:51,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:33:51,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884804355] [2022-11-20 11:33:51,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:51,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:33:51,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:51,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:33:51,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:33:51,094 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:33:51,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 876 places, 1191 transitions, 22821 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:51,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:51,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:33:51,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:55,064 INFO L130 PetriNetUnfolder]: 794/2423 cut-off events. [2022-11-20 11:33:55,064 INFO L131 PetriNetUnfolder]: For 122162/122162 co-relation queries the response was YES. [2022-11-20 11:33:55,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26198 conditions, 2423 events. 794/2423 cut-off events. For 122162/122162 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 19391 event pairs, 40 based on Foata normal form. 1/2421 useless extension candidates. Maximal degree in co-relation 25876. Up to 1756 conditions per place. [2022-11-20 11:33:55,142 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 989 selfloop transitions, 174 changer transitions 33/1235 dead transitions. [2022-11-20 11:33:55,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 1235 transitions, 26109 flow [2022-11-20 11:33:55,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 11:33:55,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 11:33:55,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2020 transitions. [2022-11-20 11:33:55,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5655095184770437 [2022-11-20 11:33:55,145 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2020 transitions. [2022-11-20 11:33:55,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2020 transitions. [2022-11-20 11:33:55,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:55,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2020 transitions. [2022-11-20 11:33:55,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 53.1578947368421) internal successors, (2020), 38 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:55,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:55,150 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:55,150 INFO L175 Difference]: Start difference. First operand has 876 places, 1191 transitions, 22821 flow. Second operand 38 states and 2020 transitions. [2022-11-20 11:33:55,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 905 places, 1235 transitions, 26109 flow [2022-11-20 11:33:57,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 881 places, 1235 transitions, 25718 flow, removed 103 selfloop flow, removed 24 redundant places. [2022-11-20 11:33:57,112 INFO L231 Difference]: Finished difference. Result has 891 places, 1186 transitions, 22871 flow [2022-11-20 11:33:57,113 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22456, PETRI_DIFFERENCE_MINUEND_PLACES=844, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1021, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=22871, PETRI_PLACES=891, PETRI_TRANSITIONS=1186} [2022-11-20 11:33:57,113 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 803 predicate places. [2022-11-20 11:33:57,113 INFO L495 AbstractCegarLoop]: Abstraction has has 891 places, 1186 transitions, 22871 flow [2022-11-20 11:33:57,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:57,114 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:57,114 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:33:57,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2022-11-20 11:33:57,114 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:33:57,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:57,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1049249256, now seen corresponding path program 200 times [2022-11-20 11:33:57,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:57,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050345976] [2022-11-20 11:33:57,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:57,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:57,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:33:57,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:57,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050345976] [2022-11-20 11:33:57,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050345976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:57,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:57,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:33:57,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134636050] [2022-11-20 11:33:57,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:57,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:33:57,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:57,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:33:57,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:33:57,669 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:33:57,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 891 places, 1186 transitions, 22871 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:57,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:57,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:33:57,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:01,571 INFO L130 PetriNetUnfolder]: 780/2385 cut-off events. [2022-11-20 11:34:01,571 INFO L131 PetriNetUnfolder]: For 117469/117469 co-relation queries the response was YES. [2022-11-20 11:34:01,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25781 conditions, 2385 events. 780/2385 cut-off events. For 117469/117469 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 18980 event pairs, 43 based on Foata normal form. 1/2383 useless extension candidates. Maximal degree in co-relation 25454. Up to 1828 conditions per place. [2022-11-20 11:34:01,637 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1048 selfloop transitions, 115 changer transitions 18/1220 dead transitions. [2022-11-20 11:34:01,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 913 places, 1220 transitions, 25651 flow [2022-11-20 11:34:01,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:34:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:34:01,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1703 transitions. [2022-11-20 11:34:01,640 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.566156914893617 [2022-11-20 11:34:01,640 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1703 transitions. [2022-11-20 11:34:01,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1703 transitions. [2022-11-20 11:34:01,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:01,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1703 transitions. [2022-11-20 11:34:01,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.21875) internal successors, (1703), 32 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:01,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:01,643 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:01,643 INFO L175 Difference]: Start difference. First operand has 891 places, 1186 transitions, 22871 flow. Second operand 32 states and 1703 transitions. [2022-11-20 11:34:01,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 913 places, 1220 transitions, 25651 flow [2022-11-20 11:34:03,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 1220 transitions, 25104 flow, removed 70 selfloop flow, removed 35 redundant places. [2022-11-20 11:34:03,535 INFO L231 Difference]: Finished difference. Result has 886 places, 1185 transitions, 22621 flow [2022-11-20 11:34:03,536 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22344, PETRI_DIFFERENCE_MINUEND_PLACES=847, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1071, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=22621, PETRI_PLACES=886, PETRI_TRANSITIONS=1185} [2022-11-20 11:34:03,536 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 798 predicate places. [2022-11-20 11:34:03,536 INFO L495 AbstractCegarLoop]: Abstraction has has 886 places, 1185 transitions, 22621 flow [2022-11-20 11:34:03,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:03,537 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:03,537 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:03,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2022-11-20 11:34:03,537 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:34:03,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:03,538 INFO L85 PathProgramCache]: Analyzing trace with hash 239049674, now seen corresponding path program 201 times [2022-11-20 11:34:03,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:03,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77631539] [2022-11-20 11:34:03,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:03,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:04,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:04,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:04,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77631539] [2022-11-20 11:34:04,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77631539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:04,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:04,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:34:04,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790029388] [2022-11-20 11:34:04,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:04,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:34:04,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:04,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:34:04,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:34:04,049 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:34:04,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 886 places, 1185 transitions, 22621 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:04,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:04,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:34:04,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:08,045 INFO L130 PetriNetUnfolder]: 803/2504 cut-off events. [2022-11-20 11:34:08,045 INFO L131 PetriNetUnfolder]: For 117687/117687 co-relation queries the response was YES. [2022-11-20 11:34:08,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26489 conditions, 2504 events. 803/2504 cut-off events. For 117687/117687 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 20353 event pairs, 46 based on Foata normal form. 1/2502 useless extension candidates. Maximal degree in co-relation 26164. Up to 1692 conditions per place. [2022-11-20 11:34:08,129 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 960 selfloop transitions, 226 changer transitions 52/1277 dead transitions. [2022-11-20 11:34:08,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 914 places, 1277 transitions, 27240 flow [2022-11-20 11:34:08,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:34:08,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:34:08,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1856 transitions. [2022-11-20 11:34:08,131 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5641337386018237 [2022-11-20 11:34:08,132 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1856 transitions. [2022-11-20 11:34:08,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1856 transitions. [2022-11-20 11:34:08,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:08,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1856 transitions. [2022-11-20 11:34:08,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.02857142857143) internal successors, (1856), 35 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:08,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:08,138 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:08,138 INFO L175 Difference]: Start difference. First operand has 886 places, 1185 transitions, 22621 flow. Second operand 35 states and 1856 transitions. [2022-11-20 11:34:08,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 914 places, 1277 transitions, 27240 flow [2022-11-20 11:34:10,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 882 places, 1277 transitions, 26846 flow, removed 48 selfloop flow, removed 32 redundant places. [2022-11-20 11:34:10,213 INFO L231 Difference]: Finished difference. Result has 891 places, 1200 transitions, 23604 flow [2022-11-20 11:34:10,213 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22251, PETRI_DIFFERENCE_MINUEND_PLACES=848, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=966, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=23604, PETRI_PLACES=891, PETRI_TRANSITIONS=1200} [2022-11-20 11:34:10,213 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 803 predicate places. [2022-11-20 11:34:10,213 INFO L495 AbstractCegarLoop]: Abstraction has has 891 places, 1200 transitions, 23604 flow [2022-11-20 11:34:10,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:10,214 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:10,214 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:10,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2022-11-20 11:34:10,214 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:34:10,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:10,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1544945088, now seen corresponding path program 202 times [2022-11-20 11:34:10,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:10,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113927824] [2022-11-20 11:34:10,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:10,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:10,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:10,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:10,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113927824] [2022-11-20 11:34:10,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113927824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:10,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:10,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:34:10,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125395542] [2022-11-20 11:34:10,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:10,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:34:10,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:10,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:34:10,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:34:10,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:34:10,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 891 places, 1200 transitions, 23604 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:10,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:10,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:34:10,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:15,706 INFO L130 PetriNetUnfolder]: 849/2666 cut-off events. [2022-11-20 11:34:15,706 INFO L131 PetriNetUnfolder]: For 139921/139921 co-relation queries the response was YES. [2022-11-20 11:34:15,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28875 conditions, 2666 events. 849/2666 cut-off events. For 139921/139921 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 22204 event pairs, 41 based on Foata normal form. 1/2664 useless extension candidates. Maximal degree in co-relation 28549. Up to 1756 conditions per place. [2022-11-20 11:34:15,801 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1015 selfloop transitions, 286 changer transitions 33/1373 dead transitions. [2022-11-20 11:34:15,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 934 places, 1373 transitions, 30574 flow [2022-11-20 11:34:15,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-20 11:34:15,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-20 11:34:15,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 2631 transitions. [2022-11-20 11:34:15,804 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5597872340425532 [2022-11-20 11:34:15,805 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 2631 transitions. [2022-11-20 11:34:15,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 2631 transitions. [2022-11-20 11:34:15,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:15,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 2631 transitions. [2022-11-20 11:34:15,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 52.62) internal successors, (2631), 50 states have internal predecessors, (2631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:15,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 94.0) internal successors, (4794), 51 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:15,810 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 94.0) internal successors, (4794), 51 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:15,810 INFO L175 Difference]: Start difference. First operand has 891 places, 1200 transitions, 23604 flow. Second operand 50 states and 2631 transitions. [2022-11-20 11:34:15,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 934 places, 1373 transitions, 30574 flow [2022-11-20 11:34:18,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 909 places, 1373 transitions, 29738 flow, removed 291 selfloop flow, removed 25 redundant places. [2022-11-20 11:34:18,065 INFO L231 Difference]: Finished difference. Result has 921 places, 1296 transitions, 26137 flow [2022-11-20 11:34:18,066 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=22845, PETRI_DIFFERENCE_MINUEND_PLACES=860, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=925, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=26137, PETRI_PLACES=921, PETRI_TRANSITIONS=1296} [2022-11-20 11:34:18,066 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 833 predicate places. [2022-11-20 11:34:18,066 INFO L495 AbstractCegarLoop]: Abstraction has has 921 places, 1296 transitions, 26137 flow [2022-11-20 11:34:18,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:18,066 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:18,067 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:18,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2022-11-20 11:34:18,067 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:34:18,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:18,067 INFO L85 PathProgramCache]: Analyzing trace with hash 649497290, now seen corresponding path program 203 times [2022-11-20 11:34:18,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:18,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33353388] [2022-11-20 11:34:18,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:18,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:18,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:18,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:18,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33353388] [2022-11-20 11:34:18,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33353388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:18,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:18,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:34:18,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755066084] [2022-11-20 11:34:18,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:18,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:34:18,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:18,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:34:18,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:34:18,617 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:34:18,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 921 places, 1296 transitions, 26137 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:18,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:18,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:34:18,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:22,287 INFO L130 PetriNetUnfolder]: 831/2654 cut-off events. [2022-11-20 11:34:22,287 INFO L131 PetriNetUnfolder]: For 143593/143593 co-relation queries the response was YES. [2022-11-20 11:34:22,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29102 conditions, 2654 events. 831/2654 cut-off events. For 143593/143593 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 22242 event pairs, 45 based on Foata normal form. 1/2651 useless extension candidates. Maximal degree in co-relation 28768. Up to 1837 conditions per place. [2022-11-20 11:34:22,370 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1072 selfloop transitions, 222 changer transitions 29/1362 dead transitions. [2022-11-20 11:34:22,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 946 places, 1362 transitions, 30576 flow [2022-11-20 11:34:22,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:34:22,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:34:22,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1704 transitions. [2022-11-20 11:34:22,373 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5664893617021277 [2022-11-20 11:34:22,373 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1704 transitions. [2022-11-20 11:34:22,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1704 transitions. [2022-11-20 11:34:22,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:22,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1704 transitions. [2022-11-20 11:34:22,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.25) internal successors, (1704), 32 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:22,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:22,377 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:22,377 INFO L175 Difference]: Start difference. First operand has 921 places, 1296 transitions, 26137 flow. Second operand 32 states and 1704 transitions. [2022-11-20 11:34:22,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 946 places, 1362 transitions, 30576 flow [2022-11-20 11:34:24,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 913 places, 1362 transitions, 29560 flow, removed 385 selfloop flow, removed 33 redundant places. [2022-11-20 11:34:24,558 INFO L231 Difference]: Finished difference. Result has 920 places, 1310 transitions, 26299 flow [2022-11-20 11:34:24,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25187, PETRI_DIFFERENCE_MINUEND_PLACES=882, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1082, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=26299, PETRI_PLACES=920, PETRI_TRANSITIONS=1310} [2022-11-20 11:34:24,559 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 832 predicate places. [2022-11-20 11:34:24,559 INFO L495 AbstractCegarLoop]: Abstraction has has 920 places, 1310 transitions, 26299 flow [2022-11-20 11:34:24,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:24,559 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:24,559 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:24,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2022-11-20 11:34:24,559 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:34:24,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:24,560 INFO L85 PathProgramCache]: Analyzing trace with hash -799570080, now seen corresponding path program 204 times [2022-11-20 11:34:24,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:24,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506007871] [2022-11-20 11:34:24,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:24,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:25,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:25,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:25,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506007871] [2022-11-20 11:34:25,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506007871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:25,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:25,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:34:25,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801177897] [2022-11-20 11:34:25,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:25,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:34:25,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:25,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:34:25,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:34:25,094 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:34:25,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 920 places, 1310 transitions, 26299 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:25,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:25,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:34:25,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:29,050 INFO L130 PetriNetUnfolder]: 831/2645 cut-off events. [2022-11-20 11:34:29,050 INFO L131 PetriNetUnfolder]: For 145665/145665 co-relation queries the response was YES. [2022-11-20 11:34:29,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29041 conditions, 2645 events. 831/2645 cut-off events. For 145665/145665 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 22133 event pairs, 44 based on Foata normal form. 1/2642 useless extension candidates. Maximal degree in co-relation 28701. Up to 1817 conditions per place. [2022-11-20 11:34:29,143 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1045 selfloop transitions, 245 changer transitions 30/1359 dead transitions. [2022-11-20 11:34:29,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 947 places, 1359 transitions, 30238 flow [2022-11-20 11:34:29,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 11:34:29,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 11:34:29,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1756 transitions. [2022-11-20 11:34:29,146 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.56608639587363 [2022-11-20 11:34:29,146 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1756 transitions. [2022-11-20 11:34:29,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1756 transitions. [2022-11-20 11:34:29,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:29,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1756 transitions. [2022-11-20 11:34:29,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.21212121212121) internal successors, (1756), 33 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:29,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:29,150 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:29,150 INFO L175 Difference]: Start difference. First operand has 920 places, 1310 transitions, 26299 flow. Second operand 33 states and 1756 transitions. [2022-11-20 11:34:29,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 947 places, 1359 transitions, 30238 flow [2022-11-20 11:34:31,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 920 places, 1359 transitions, 29324 flow, removed 288 selfloop flow, removed 27 redundant places. [2022-11-20 11:34:31,796 INFO L231 Difference]: Finished difference. Result has 927 places, 1306 transitions, 26080 flow [2022-11-20 11:34:31,797 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25503, PETRI_DIFFERENCE_MINUEND_PLACES=888, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1066, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=26080, PETRI_PLACES=927, PETRI_TRANSITIONS=1306} [2022-11-20 11:34:31,797 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 839 predicate places. [2022-11-20 11:34:31,797 INFO L495 AbstractCegarLoop]: Abstraction has has 927 places, 1306 transitions, 26080 flow [2022-11-20 11:34:31,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:31,797 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:31,797 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:31,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2022-11-20 11:34:31,798 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:34:31,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:31,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1620891696, now seen corresponding path program 205 times [2022-11-20 11:34:31,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:31,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168770023] [2022-11-20 11:34:31,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:31,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:32,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:32,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168770023] [2022-11-20 11:34:32,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168770023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:32,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:32,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:34:32,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514388886] [2022-11-20 11:34:32,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:32,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:34:32,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:32,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:34:32,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:34:32,359 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:34:32,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 1306 transitions, 26080 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:32,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:32,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:34:32,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:36,586 INFO L130 PetriNetUnfolder]: 821/2617 cut-off events. [2022-11-20 11:34:36,586 INFO L131 PetriNetUnfolder]: For 130487/130487 co-relation queries the response was YES. [2022-11-20 11:34:36,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28319 conditions, 2617 events. 821/2617 cut-off events. For 130487/130487 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21864 event pairs, 45 based on Foata normal form. 1/2614 useless extension candidates. Maximal degree in co-relation 27977. Up to 1894 conditions per place. [2022-11-20 11:34:36,678 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1108 selfloop transitions, 174 changer transitions 25/1346 dead transitions. [2022-11-20 11:34:36,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 956 places, 1346 transitions, 29710 flow [2022-11-20 11:34:36,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:34:36,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:34:36,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1851 transitions. [2022-11-20 11:34:36,681 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5626139817629179 [2022-11-20 11:34:36,681 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1851 transitions. [2022-11-20 11:34:36,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1851 transitions. [2022-11-20 11:34:36,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:36,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1851 transitions. [2022-11-20 11:34:36,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.885714285714286) internal successors, (1851), 35 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:36,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:36,685 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:36,685 INFO L175 Difference]: Start difference. First operand has 927 places, 1306 transitions, 26080 flow. Second operand 35 states and 1851 transitions. [2022-11-20 11:34:36,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 956 places, 1346 transitions, 29710 flow [2022-11-20 11:34:39,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 1346 transitions, 29199 flow, removed 87 selfloop flow, removed 29 redundant places. [2022-11-20 11:34:39,137 INFO L231 Difference]: Finished difference. Result has 934 places, 1300 transitions, 25969 flow [2022-11-20 11:34:39,138 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25587, PETRI_DIFFERENCE_MINUEND_PLACES=893, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=25969, PETRI_PLACES=934, PETRI_TRANSITIONS=1300} [2022-11-20 11:34:39,139 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 846 predicate places. [2022-11-20 11:34:39,139 INFO L495 AbstractCegarLoop]: Abstraction has has 934 places, 1300 transitions, 25969 flow [2022-11-20 11:34:39,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:39,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:39,139 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:39,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2022-11-20 11:34:39,139 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:34:39,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:39,140 INFO L85 PathProgramCache]: Analyzing trace with hash 416315876, now seen corresponding path program 206 times [2022-11-20 11:34:39,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:39,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760653606] [2022-11-20 11:34:39,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:39,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:39,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:39,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:39,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760653606] [2022-11-20 11:34:39,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760653606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:39,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:39,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:34:39,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275339095] [2022-11-20 11:34:39,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:39,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:34:39,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:39,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:34:39,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:34:39,675 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:34:39,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 934 places, 1300 transitions, 25969 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:39,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:39,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:34:39,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:43,851 INFO L130 PetriNetUnfolder]: 813/2605 cut-off events. [2022-11-20 11:34:43,851 INFO L131 PetriNetUnfolder]: For 128117/128117 co-relation queries the response was YES. [2022-11-20 11:34:43,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28031 conditions, 2605 events. 813/2605 cut-off events. For 128117/128117 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21807 event pairs, 41 based on Foata normal form. 1/2603 useless extension candidates. Maximal degree in co-relation 27689. Up to 1905 conditions per place. [2022-11-20 11:34:43,938 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1124 selfloop transitions, 157 changer transitions 20/1340 dead transitions. [2022-11-20 11:34:43,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 962 places, 1340 transitions, 29318 flow [2022-11-20 11:34:43,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:34:43,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:34:43,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1945 transitions. [2022-11-20 11:34:43,941 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5592294422081656 [2022-11-20 11:34:43,941 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1945 transitions. [2022-11-20 11:34:43,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1945 transitions. [2022-11-20 11:34:43,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:43,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1945 transitions. [2022-11-20 11:34:43,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.567567567567565) internal successors, (1945), 37 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:43,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:43,947 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:43,947 INFO L175 Difference]: Start difference. First operand has 934 places, 1300 transitions, 25969 flow. Second operand 37 states and 1945 transitions. [2022-11-20 11:34:43,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 962 places, 1340 transitions, 29318 flow [2022-11-20 11:34:46,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 928 places, 1340 transitions, 28785 flow, removed 85 selfloop flow, removed 34 redundant places. [2022-11-20 11:34:46,418 INFO L231 Difference]: Finished difference. Result has 935 places, 1301 transitions, 25900 flow [2022-11-20 11:34:46,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25466, PETRI_DIFFERENCE_MINUEND_PLACES=892, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=25900, PETRI_PLACES=935, PETRI_TRANSITIONS=1301} [2022-11-20 11:34:46,419 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 847 predicate places. [2022-11-20 11:34:46,419 INFO L495 AbstractCegarLoop]: Abstraction has has 935 places, 1301 transitions, 25900 flow [2022-11-20 11:34:46,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:46,420 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:46,420 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:46,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2022-11-20 11:34:46,420 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:34:46,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:46,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1214989986, now seen corresponding path program 207 times [2022-11-20 11:34:46,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:46,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201075586] [2022-11-20 11:34:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:46,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:46,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:46,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:46,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201075586] [2022-11-20 11:34:46,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201075586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:46,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:46,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:34:46,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692966932] [2022-11-20 11:34:46,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:46,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:34:46,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:46,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:34:46,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:34:46,983 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:34:46,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 935 places, 1301 transitions, 25900 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:46,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:46,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:34:46,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:51,646 INFO L130 PetriNetUnfolder]: 807/2594 cut-off events. [2022-11-20 11:34:51,646 INFO L131 PetriNetUnfolder]: For 125425/125425 co-relation queries the response was YES. [2022-11-20 11:34:51,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27822 conditions, 2594 events. 807/2594 cut-off events. For 125425/125425 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 21772 event pairs, 38 based on Foata normal form. 1/2593 useless extension candidates. Maximal degree in co-relation 27480. Up to 1934 conditions per place. [2022-11-20 11:34:51,725 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1133 selfloop transitions, 140 changer transitions 22/1334 dead transitions. [2022-11-20 11:34:51,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 963 places, 1334 transitions, 29092 flow [2022-11-20 11:34:51,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:34:51,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 11:34:51,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1910 transitions. [2022-11-20 11:34:51,728 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5644208037825059 [2022-11-20 11:34:51,728 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1910 transitions. [2022-11-20 11:34:51,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1910 transitions. [2022-11-20 11:34:51,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:51,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1910 transitions. [2022-11-20 11:34:51,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.05555555555556) internal successors, (1910), 36 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:51,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:51,732 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:51,732 INFO L175 Difference]: Start difference. First operand has 935 places, 1301 transitions, 25900 flow. Second operand 36 states and 1910 transitions. [2022-11-20 11:34:51,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 963 places, 1334 transitions, 29092 flow [2022-11-20 11:34:54,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 933 places, 1334 transitions, 28602 flow, removed 120 selfloop flow, removed 30 redundant places. [2022-11-20 11:34:54,087 INFO L231 Difference]: Finished difference. Result has 939 places, 1293 transitions, 25791 flow [2022-11-20 11:34:54,088 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25422, PETRI_DIFFERENCE_MINUEND_PLACES=898, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=25791, PETRI_PLACES=939, PETRI_TRANSITIONS=1293} [2022-11-20 11:34:54,088 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 851 predicate places. [2022-11-20 11:34:54,088 INFO L495 AbstractCegarLoop]: Abstraction has has 939 places, 1293 transitions, 25791 flow [2022-11-20 11:34:54,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:54,088 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:54,088 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:54,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2022-11-20 11:34:54,089 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:34:54,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:54,089 INFO L85 PathProgramCache]: Analyzing trace with hash -359252944, now seen corresponding path program 208 times [2022-11-20 11:34:54,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:54,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151758940] [2022-11-20 11:34:54,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:54,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:54,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:54,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:54,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151758940] [2022-11-20 11:34:54,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151758940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:54,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:54,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:34:54,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448468545] [2022-11-20 11:34:54,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:54,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:34:54,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:54,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:34:54,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:34:54,846 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:34:54,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 939 places, 1293 transitions, 25791 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:54,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:54,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:34:54,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:59,289 INFO L130 PetriNetUnfolder]: 799/2569 cut-off events. [2022-11-20 11:34:59,289 INFO L131 PetriNetUnfolder]: For 121700/121700 co-relation queries the response was YES. [2022-11-20 11:34:59,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27501 conditions, 2569 events. 799/2569 cut-off events. For 121700/121700 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21426 event pairs, 39 based on Foata normal form. 1/2568 useless extension candidates. Maximal degree in co-relation 27157. Up to 1961 conditions per place. [2022-11-20 11:34:59,361 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 1152 selfloop transitions, 111 changer transitions 16/1318 dead transitions. [2022-11-20 11:34:59,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 962 places, 1318 transitions, 28527 flow [2022-11-20 11:34:59,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:34:59,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:34:59,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1595 transitions. [2022-11-20 11:34:59,363 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5656028368794326 [2022-11-20 11:34:59,363 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1595 transitions. [2022-11-20 11:34:59,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1595 transitions. [2022-11-20 11:34:59,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:59,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1595 transitions. [2022-11-20 11:34:59,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.166666666666664) internal successors, (1595), 30 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:59,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:59,367 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:59,367 INFO L175 Difference]: Start difference. First operand has 939 places, 1293 transitions, 25791 flow. Second operand 30 states and 1595 transitions. [2022-11-20 11:34:59,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 962 places, 1318 transitions, 28527 flow [2022-11-20 11:35:01,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 1318 transitions, 27935 flow, removed 119 selfloop flow, removed 35 redundant places. [2022-11-20 11:35:01,644 INFO L231 Difference]: Finished difference. Result has 931 places, 1286 transitions, 25355 flow [2022-11-20 11:35:01,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=25203, PETRI_DIFFERENCE_MINUEND_PLACES=898, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=25355, PETRI_PLACES=931, PETRI_TRANSITIONS=1286} [2022-11-20 11:35:01,644 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 843 predicate places. [2022-11-20 11:35:01,645 INFO L495 AbstractCegarLoop]: Abstraction has has 931 places, 1286 transitions, 25355 flow [2022-11-20 11:35:01,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:01,645 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:35:01,645 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:01,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2022-11-20 11:35:01,645 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:35:01,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:01,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1344540094, now seen corresponding path program 209 times [2022-11-20 11:35:01,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:01,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302259400] [2022-11-20 11:35:01,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:01,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:02,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:35:02,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:02,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302259400] [2022-11-20 11:35:02,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302259400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:02,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:35:02,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:35:02,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16588341] [2022-11-20 11:35:02,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:02,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:35:02,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:02,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:35:02,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:35:02,220 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-20 11:35:02,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 931 places, 1286 transitions, 25355 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:02,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:35:02,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-20 11:35:02,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand