./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564da90-d5d3-45b2-87da-8641ad0df724/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564da90-d5d3-45b2-87da-8641ad0df724/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564da90-d5d3-45b2-87da-8641ad0df724/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564da90-d5d3-45b2-87da-8641ad0df724/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564da90-d5d3-45b2-87da-8641ad0df724/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564da90-d5d3-45b2-87da-8641ad0df724/bin/uautomizer-tPACEb0tL8 --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 9a8131f8693d82039b4018f716a17d0a3e1038ace11c7bb21b12bc911efac3c1 --- 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-e04fb08 [2022-11-16 12:41:01,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:41:01,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:41:01,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:41:01,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:41:01,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:41:01,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:41:01,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:41:01,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:41:01,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:41:01,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:41:01,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:41:01,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:41:01,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:41:01,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:41:01,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:41:01,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:41:01,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:41:01,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:41:01,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:41:01,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:41:01,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:41:01,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:41:01,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:41:01,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:41:01,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:41:01,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:41:01,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:41:01,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:41:01,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:41:01,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:41:01,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:41:01,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:41:01,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:41:01,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:41:01,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:41:01,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:41:01,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:41:01,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:41:01,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:41:01,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:41:01,869 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564da90-d5d3-45b2-87da-8641ad0df724/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:41:01,909 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:41:01,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:41:01,910 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:41:01,910 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:41:01,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:41:01,911 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:41:01,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:41:01,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:41:01,912 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:41:01,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:41:01,912 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:41:01,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:41:01,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:41:01,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:41:01,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:41:01,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:41:01,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:41:01,914 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:41:01,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:41:01,918 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:41:01,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:41:01,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:41:01,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:41:01,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:41:01,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:41:01,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:41:01,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:41:01,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:41:01,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:41:01,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:41:01,921 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:41:01,921 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:41:01,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:41:01,922 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_e564da90-d5d3-45b2-87da-8641ad0df724/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564da90-d5d3-45b2-87da-8641ad0df724/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a8131f8693d82039b4018f716a17d0a3e1038ace11c7bb21b12bc911efac3c1 [2022-11-16 12:41:02,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:41:02,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:41:02,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:41:02,288 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:41:02,289 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:41:02,290 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564da90-d5d3-45b2-87da-8641ad0df724/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i [2022-11-16 12:41:02,362 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564da90-d5d3-45b2-87da-8641ad0df724/bin/uautomizer-tPACEb0tL8/data/5dd9b52a6/f0dd4c3723c149568d6427b309ef5f2f/FLAG4318cdba9 [2022-11-16 12:41:02,984 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:41:02,985 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564da90-d5d3-45b2-87da-8641ad0df724/sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i [2022-11-16 12:41:03,007 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564da90-d5d3-45b2-87da-8641ad0df724/bin/uautomizer-tPACEb0tL8/data/5dd9b52a6/f0dd4c3723c149568d6427b309ef5f2f/FLAG4318cdba9 [2022-11-16 12:41:03,242 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564da90-d5d3-45b2-87da-8641ad0df724/bin/uautomizer-tPACEb0tL8/data/5dd9b52a6/f0dd4c3723c149568d6427b309ef5f2f [2022-11-16 12:41:03,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:41:03,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:41:03,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:41:03,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:41:03,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:41:03,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:41:03" (1/1) ... [2022-11-16 12:41:03,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@abd5b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:03, skipping insertion in model container [2022-11-16 12:41:03,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:41:03" (1/1) ... [2022-11-16 12:41:03,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:41:03,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:41:03,507 WARN L229 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_e564da90-d5d3-45b2-87da-8641ad0df724/sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i[949,962] [2022-11-16 12:41:03,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:41:03,783 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:41:03,797 WARN L229 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_e564da90-d5d3-45b2-87da-8641ad0df724/sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i[949,962] [2022-11-16 12:41:03,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:41:03,913 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:41:03,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:03 WrapperNode [2022-11-16 12:41:03,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:41:03,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:41:03,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:41:03,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:41:03,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:03" (1/1) ... [2022-11-16 12:41:03,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:03" (1/1) ... [2022-11-16 12:41:03,968 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 158 [2022-11-16 12:41:03,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:41:03,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:41:03,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:41:03,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:41:03,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:03" (1/1) ... [2022-11-16 12:41:03,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:03" (1/1) ... [2022-11-16 12:41:03,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:03" (1/1) ... [2022-11-16 12:41:03,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:03" (1/1) ... [2022-11-16 12:41:03,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:03" (1/1) ... [2022-11-16 12:41:03,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:03" (1/1) ... [2022-11-16 12:41:03,994 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:03" (1/1) ... [2022-11-16 12:41:03,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:03" (1/1) ... [2022-11-16 12:41:03,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:41:04,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:41:04,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:41:04,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:41:04,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:03" (1/1) ... [2022-11-16 12:41:04,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:41:04,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564da90-d5d3-45b2-87da-8641ad0df724/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:04,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564da90-d5d3-45b2-87da-8641ad0df724/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:41:04,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564da90-d5d3-45b2-87da-8641ad0df724/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:41:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:41:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:41:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:41:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:41:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:41:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-16 12:41:04,099 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-16 12:41:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-16 12:41:04,100 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-16 12:41:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-16 12:41:04,100 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-16 12:41:04,101 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-16 12:41:04,101 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-16 12:41:04,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:41:04,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:41:04,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:41:04,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:41:04,103 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:41:04,294 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:41:04,296 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:41:04,758 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:41:04,905 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:41:04,906 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:41:04,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:41:04 BoogieIcfgContainer [2022-11-16 12:41:04,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:41:04,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:41:04,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:41:04,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:41:04,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:41:03" (1/3) ... [2022-11-16 12:41:04,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5933e891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:41:04, skipping insertion in model container [2022-11-16 12:41:04,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:03" (2/3) ... [2022-11-16 12:41:04,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5933e891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:41:04, skipping insertion in model container [2022-11-16 12:41:04,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:41:04" (3/3) ... [2022-11-16 12:41:04,921 INFO L112 eAbstractionObserver]: Analyzing ICFG mix053_tso.oepc.i [2022-11-16 12:41:04,930 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:41:04,940 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:41:04,941 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:41:04,941 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:41:05,032 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:41:05,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 134 transitions, 288 flow [2022-11-16 12:41:05,189 INFO L130 PetriNetUnfolder]: 2/130 cut-off events. [2022-11-16 12:41:05,190 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:41:05,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 130 events. 2/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2022-11-16 12:41:05,196 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 134 transitions, 288 flow [2022-11-16 12:41:05,204 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 130 transitions, 272 flow [2022-11-16 12:41:05,226 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:41:05,234 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;@6f79ddc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:41:05,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-16 12:41:05,267 INFO L130 PetriNetUnfolder]: 0/76 cut-off events. [2022-11-16 12:41:05,267 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:41:05,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:05,269 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] [2022-11-16 12:41:05,269 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:41:05,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:05,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1995111346, now seen corresponding path program 1 times [2022-11-16 12:41:05,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:05,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168935215] [2022-11-16 12:41:05,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:05,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:05,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:05,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168935215] [2022-11-16 12:41:05,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168935215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:05,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:05,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:41:05,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225186572] [2022-11-16 12:41:05,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:05,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:41:05,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:06,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:41:06,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:41:06,028 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 134 [2022-11-16 12:41:06,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 130 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:06,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:06,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 134 [2022-11-16 12:41:06,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:06,294 INFO L130 PetriNetUnfolder]: 57/522 cut-off events. [2022-11-16 12:41:06,294 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-16 12:41:06,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 522 events. 57/522 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2642 event pairs, 31 based on Foata normal form. 15/507 useless extension candidates. Maximal degree in co-relation 595. Up to 75 conditions per place. [2022-11-16 12:41:06,306 INFO L137 encePairwiseOnDemand]: 129/134 looper letters, 14 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2022-11-16 12:41:06,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 131 transitions, 309 flow [2022-11-16 12:41:06,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:41:06,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:41:06,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2022-11-16 12:41:06,330 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9402985074626866 [2022-11-16 12:41:06,331 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 378 transitions. [2022-11-16 12:41:06,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 378 transitions. [2022-11-16 12:41:06,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:06,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 378 transitions. [2022-11-16 12:41:06,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:06,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:06,355 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:06,357 INFO L175 Difference]: Start difference. First operand has 141 places, 130 transitions, 272 flow. Second operand 3 states and 378 transitions. [2022-11-16 12:41:06,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 131 transitions, 309 flow [2022-11-16 12:41:06,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 131 transitions, 304 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:41:06,367 INFO L231 Difference]: Finished difference. Result has 137 places, 126 transitions, 264 flow [2022-11-16 12:41:06,369 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=137, PETRI_TRANSITIONS=126} [2022-11-16 12:41:06,375 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -4 predicate places. [2022-11-16 12:41:06,375 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 126 transitions, 264 flow [2022-11-16 12:41:06,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:06,376 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:06,377 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, 1, 1, 1, 1, 1] [2022-11-16 12:41:06,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:41:06,377 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:41:06,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:06,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1097612185, now seen corresponding path program 1 times [2022-11-16 12:41:06,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:06,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855782885] [2022-11-16 12:41:06,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:06,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:07,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:07,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:07,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855782885] [2022-11-16 12:41:07,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855782885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:07,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:07,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:41:07,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581482793] [2022-11-16 12:41:07,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:07,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:41:07,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:07,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:41:07,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:41:07,738 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 134 [2022-11-16 12:41:07,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 126 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:07,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:07,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 134 [2022-11-16 12:41:07,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:10,483 INFO L130 PetriNetUnfolder]: 4079/10433 cut-off events. [2022-11-16 12:41:10,483 INFO L131 PetriNetUnfolder]: For 438/438 co-relation queries the response was YES. [2022-11-16 12:41:10,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16868 conditions, 10433 events. 4079/10433 cut-off events. For 438/438 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 102641 event pairs, 314 based on Foata normal form. 0/10209 useless extension candidates. Maximal degree in co-relation 16804. Up to 2762 conditions per place. [2022-11-16 12:41:10,553 INFO L137 encePairwiseOnDemand]: 120/134 looper letters, 44 selfloop transitions, 12 changer transitions 101/239 dead transitions. [2022-11-16 12:41:10,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 239 transitions, 810 flow [2022-11-16 12:41:10,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:41:10,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:41:10,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1434 transitions. [2022-11-16 12:41:10,558 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8231917336394948 [2022-11-16 12:41:10,559 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1434 transitions. [2022-11-16 12:41:10,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1434 transitions. [2022-11-16 12:41:10,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:10,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1434 transitions. [2022-11-16 12:41:10,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 110.3076923076923) internal successors, (1434), 13 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:10,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:10,570 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:10,570 INFO L175 Difference]: Start difference. First operand has 137 places, 126 transitions, 264 flow. Second operand 13 states and 1434 transitions. [2022-11-16 12:41:10,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 239 transitions, 810 flow [2022-11-16 12:41:10,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 239 transitions, 784 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:41:10,576 INFO L231 Difference]: Finished difference. Result has 158 places, 122 transitions, 363 flow [2022-11-16 12:41:10,576 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=363, PETRI_PLACES=158, PETRI_TRANSITIONS=122} [2022-11-16 12:41:10,577 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 17 predicate places. [2022-11-16 12:41:10,577 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 122 transitions, 363 flow [2022-11-16 12:41:10,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:10,578 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:10,578 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:10,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:41:10,579 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:41:10,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:10,580 INFO L85 PathProgramCache]: Analyzing trace with hash 951473798, now seen corresponding path program 1 times [2022-11-16 12:41:10,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:10,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975626835] [2022-11-16 12:41:10,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:10,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:12,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:12,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:12,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975626835] [2022-11-16 12:41:12,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975626835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:12,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:12,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:41:12,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699628201] [2022-11-16 12:41:12,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:12,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:41:12,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:12,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:41:12,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:41:12,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 134 [2022-11-16 12:41:12,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 122 transitions, 363 flow. Second operand has 10 states, 10 states have (on average 101.2) internal successors, (1012), 10 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:12,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:12,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 134 [2022-11-16 12:41:12,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:15,056 INFO L130 PetriNetUnfolder]: 3358/6821 cut-off events. [2022-11-16 12:41:15,057 INFO L131 PetriNetUnfolder]: For 15571/18208 co-relation queries the response was YES. [2022-11-16 12:41:15,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24105 conditions, 6821 events. 3358/6821 cut-off events. For 15571/18208 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 54159 event pairs, 580 based on Foata normal form. 174/6822 useless extension candidates. Maximal degree in co-relation 24030. Up to 2922 conditions per place. [2022-11-16 12:41:15,140 INFO L137 encePairwiseOnDemand]: 117/134 looper letters, 65 selfloop transitions, 27 changer transitions 144/318 dead transitions. [2022-11-16 12:41:15,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 318 transitions, 2172 flow [2022-11-16 12:41:15,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:41:15,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 12:41:15,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2363 transitions. [2022-11-16 12:41:15,146 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8015603799185889 [2022-11-16 12:41:15,147 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2363 transitions. [2022-11-16 12:41:15,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2363 transitions. [2022-11-16 12:41:15,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:15,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2363 transitions. [2022-11-16 12:41:15,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 107.4090909090909) internal successors, (2363), 22 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:15,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 134.0) internal successors, (3082), 23 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:15,163 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 134.0) internal successors, (3082), 23 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:15,164 INFO L175 Difference]: Start difference. First operand has 158 places, 122 transitions, 363 flow. Second operand 22 states and 2363 transitions. [2022-11-16 12:41:15,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 318 transitions, 2172 flow [2022-11-16 12:41:15,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 318 transitions, 2084 flow, removed 44 selfloop flow, removed 6 redundant places. [2022-11-16 12:41:15,412 INFO L231 Difference]: Finished difference. Result has 170 places, 141 transitions, 728 flow [2022-11-16 12:41:15,412 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=728, PETRI_PLACES=170, PETRI_TRANSITIONS=141} [2022-11-16 12:41:15,415 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 29 predicate places. [2022-11-16 12:41:15,415 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 141 transitions, 728 flow [2022-11-16 12:41:15,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.2) internal successors, (1012), 10 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:15,416 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:15,417 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:15,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:41:15,418 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:41:15,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:15,419 INFO L85 PathProgramCache]: Analyzing trace with hash -2113826422, now seen corresponding path program 1 times [2022-11-16 12:41:15,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:15,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940915737] [2022-11-16 12:41:15,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:15,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:16,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:16,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:16,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940915737] [2022-11-16 12:41:16,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940915737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:16,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:16,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:41:16,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114072894] [2022-11-16 12:41:16,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:16,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:41:16,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:16,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:41:16,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:41:16,686 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 134 [2022-11-16 12:41:16,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 141 transitions, 728 flow. Second operand has 10 states, 10 states have (on average 109.7) internal successors, (1097), 10 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:16,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:16,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 134 [2022-11-16 12:41:16,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:18,052 INFO L130 PetriNetUnfolder]: 2079/4505 cut-off events. [2022-11-16 12:41:18,053 INFO L131 PetriNetUnfolder]: For 42463/44244 co-relation queries the response was YES. [2022-11-16 12:41:18,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25093 conditions, 4505 events. 2079/4505 cut-off events. For 42463/44244 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 35969 event pairs, 636 based on Foata normal form. 502/4801 useless extension candidates. Maximal degree in co-relation 25001. Up to 2126 conditions per place. [2022-11-16 12:41:18,294 INFO L137 encePairwiseOnDemand]: 122/134 looper letters, 42 selfloop transitions, 22 changer transitions 43/213 dead transitions. [2022-11-16 12:41:18,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 213 transitions, 1766 flow [2022-11-16 12:41:18,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:41:18,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 12:41:18,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1368 transitions. [2022-11-16 12:41:18,299 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8507462686567164 [2022-11-16 12:41:18,300 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1368 transitions. [2022-11-16 12:41:18,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1368 transitions. [2022-11-16 12:41:18,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:18,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1368 transitions. [2022-11-16 12:41:18,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 114.0) internal successors, (1368), 12 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:18,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 134.0) internal successors, (1742), 13 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:18,312 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 134.0) internal successors, (1742), 13 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:18,312 INFO L175 Difference]: Start difference. First operand has 170 places, 141 transitions, 728 flow. Second operand 12 states and 1368 transitions. [2022-11-16 12:41:18,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 213 transitions, 1766 flow [2022-11-16 12:41:18,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 213 transitions, 1693 flow, removed 36 selfloop flow, removed 7 redundant places. [2022-11-16 12:41:18,371 INFO L231 Difference]: Finished difference. Result has 167 places, 155 transitions, 987 flow [2022-11-16 12:41:18,371 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=987, PETRI_PLACES=167, PETRI_TRANSITIONS=155} [2022-11-16 12:41:18,372 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 26 predicate places. [2022-11-16 12:41:18,372 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 155 transitions, 987 flow [2022-11-16 12:41:18,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 109.7) internal successors, (1097), 10 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:18,373 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:18,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:18,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:41:18,374 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:41:18,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:18,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1762216228, now seen corresponding path program 2 times [2022-11-16 12:41:18,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:18,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988574096] [2022-11-16 12:41:18,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:18,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:20,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:20,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:20,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988574096] [2022-11-16 12:41:20,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988574096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:20,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:20,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:41:20,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460387594] [2022-11-16 12:41:20,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:20,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:41:20,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:20,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:41:20,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:41:20,660 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 134 [2022-11-16 12:41:20,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 155 transitions, 987 flow. Second operand has 13 states, 13 states have (on average 100.76923076923077) internal successors, (1310), 13 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:20,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:20,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 134 [2022-11-16 12:41:20,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:22,880 INFO L130 PetriNetUnfolder]: 2753/5722 cut-off events. [2022-11-16 12:41:22,881 INFO L131 PetriNetUnfolder]: For 68010/78468 co-relation queries the response was YES. [2022-11-16 12:41:22,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36298 conditions, 5722 events. 2753/5722 cut-off events. For 68010/78468 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 45464 event pairs, 218 based on Foata normal form. 117/5730 useless extension candidates. Maximal degree in co-relation 36196. Up to 2511 conditions per place. [2022-11-16 12:41:22,974 INFO L137 encePairwiseOnDemand]: 114/134 looper letters, 84 selfloop transitions, 68 changer transitions 107/341 dead transitions. [2022-11-16 12:41:22,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 341 transitions, 4232 flow [2022-11-16 12:41:22,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:41:22,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-16 12:41:22,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2152 transitions. [2022-11-16 12:41:22,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8029850746268656 [2022-11-16 12:41:22,980 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2152 transitions. [2022-11-16 12:41:22,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2152 transitions. [2022-11-16 12:41:22,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:22,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2152 transitions. [2022-11-16 12:41:22,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 107.6) internal successors, (2152), 20 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:22,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 134.0) internal successors, (2814), 21 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:22,995 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 134.0) internal successors, (2814), 21 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:22,995 INFO L175 Difference]: Start difference. First operand has 167 places, 155 transitions, 987 flow. Second operand 20 states and 2152 transitions. [2022-11-16 12:41:22,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 341 transitions, 4232 flow [2022-11-16 12:41:23,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 341 transitions, 4151 flow, removed 31 selfloop flow, removed 8 redundant places. [2022-11-16 12:41:23,084 INFO L231 Difference]: Finished difference. Result has 186 places, 194 transitions, 1928 flow [2022-11-16 12:41:23,084 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1928, PETRI_PLACES=186, PETRI_TRANSITIONS=194} [2022-11-16 12:41:23,086 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 45 predicate places. [2022-11-16 12:41:23,087 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 194 transitions, 1928 flow [2022-11-16 12:41:23,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 100.76923076923077) internal successors, (1310), 13 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:23,088 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:23,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:23,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:41:23,088 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:41:23,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:23,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2146539692, now seen corresponding path program 1 times [2022-11-16 12:41:23,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:23,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597494092] [2022-11-16 12:41:23,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:23,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:24,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:24,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:24,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597494092] [2022-11-16 12:41:24,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597494092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:24,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:24,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:41:24,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578272879] [2022-11-16 12:41:24,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:24,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:41:24,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:24,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:41:24,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:41:24,010 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 134 [2022-11-16 12:41:24,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 194 transitions, 1928 flow. Second operand has 9 states, 9 states have (on average 110.88888888888889) internal successors, (998), 9 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:24,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:24,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 134 [2022-11-16 12:41:24,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:25,475 INFO L130 PetriNetUnfolder]: 2217/4640 cut-off events. [2022-11-16 12:41:25,475 INFO L131 PetriNetUnfolder]: For 103260/113041 co-relation queries the response was YES. [2022-11-16 12:41:25,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37187 conditions, 4640 events. 2217/4640 cut-off events. For 103260/113041 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 35919 event pairs, 416 based on Foata normal form. 866/5341 useless extension candidates. Maximal degree in co-relation 37077. Up to 2488 conditions per place. [2022-11-16 12:41:25,566 INFO L137 encePairwiseOnDemand]: 123/134 looper letters, 70 selfloop transitions, 47 changer transitions 43/282 dead transitions. [2022-11-16 12:41:25,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 282 transitions, 3993 flow [2022-11-16 12:41:25,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:41:25,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:41:25,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1263 transitions. [2022-11-16 12:41:25,570 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8568521031207599 [2022-11-16 12:41:25,570 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1263 transitions. [2022-11-16 12:41:25,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1263 transitions. [2022-11-16 12:41:25,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:25,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1263 transitions. [2022-11-16 12:41:25,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 114.81818181818181) internal successors, (1263), 11 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:25,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 134.0) internal successors, (1608), 12 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:25,578 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 134.0) internal successors, (1608), 12 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:25,578 INFO L175 Difference]: Start difference. First operand has 186 places, 194 transitions, 1928 flow. Second operand 11 states and 1263 transitions. [2022-11-16 12:41:25,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 282 transitions, 3993 flow [2022-11-16 12:41:25,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 282 transitions, 3819 flow, removed 83 selfloop flow, removed 10 redundant places. [2022-11-16 12:41:25,709 INFO L231 Difference]: Finished difference. Result has 185 places, 229 transitions, 2727 flow [2022-11-16 12:41:25,710 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=1818, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2727, PETRI_PLACES=185, PETRI_TRANSITIONS=229} [2022-11-16 12:41:25,712 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 44 predicate places. [2022-11-16 12:41:25,713 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 229 transitions, 2727 flow [2022-11-16 12:41:25,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 110.88888888888889) internal successors, (998), 9 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:25,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:25,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:25,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:41:25,714 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:41:25,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:25,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1493040452, now seen corresponding path program 2 times [2022-11-16 12:41:25,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:25,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745838777] [2022-11-16 12:41:25,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:25,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:26,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:26,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:26,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745838777] [2022-11-16 12:41:26,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745838777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:26,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:26,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:41:26,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116652365] [2022-11-16 12:41:26,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:26,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:41:26,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:26,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:41:26,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:41:26,815 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 134 [2022-11-16 12:41:26,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 229 transitions, 2727 flow. Second operand has 10 states, 10 states have (on average 109.8) internal successors, (1098), 10 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:26,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:26,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 134 [2022-11-16 12:41:26,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:28,424 INFO L130 PetriNetUnfolder]: 2279/4743 cut-off events. [2022-11-16 12:41:28,424 INFO L131 PetriNetUnfolder]: For 110176/122071 co-relation queries the response was YES. [2022-11-16 12:41:28,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39755 conditions, 4743 events. 2279/4743 cut-off events. For 110176/122071 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 36744 event pairs, 424 based on Foata normal form. 744/5257 useless extension candidates. Maximal degree in co-relation 39644. Up to 2575 conditions per place. [2022-11-16 12:41:28,506 INFO L137 encePairwiseOnDemand]: 123/134 looper letters, 90 selfloop transitions, 43 changer transitions 44/298 dead transitions. [2022-11-16 12:41:28,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 298 transitions, 4524 flow [2022-11-16 12:41:28,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:41:28,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 12:41:28,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1363 transitions. [2022-11-16 12:41:28,510 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.847636815920398 [2022-11-16 12:41:28,510 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1363 transitions. [2022-11-16 12:41:28,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1363 transitions. [2022-11-16 12:41:28,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:28,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1363 transitions. [2022-11-16 12:41:28,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 113.58333333333333) internal successors, (1363), 12 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:28,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 134.0) internal successors, (1742), 13 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:28,517 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 134.0) internal successors, (1742), 13 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:28,518 INFO L175 Difference]: Start difference. First operand has 185 places, 229 transitions, 2727 flow. Second operand 12 states and 1363 transitions. [2022-11-16 12:41:28,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 298 transitions, 4524 flow [2022-11-16 12:41:28,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 298 transitions, 4367 flow, removed 78 selfloop flow, removed 10 redundant places. [2022-11-16 12:41:28,647 INFO L231 Difference]: Finished difference. Result has 187 places, 239 transitions, 3047 flow [2022-11-16 12:41:28,647 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=2620, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3047, PETRI_PLACES=187, PETRI_TRANSITIONS=239} [2022-11-16 12:41:28,648 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 46 predicate places. [2022-11-16 12:41:28,648 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 239 transitions, 3047 flow [2022-11-16 12:41:28,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 109.8) internal successors, (1098), 10 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:28,649 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:28,649 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:28,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:41:28,649 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:41:28,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:28,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1849532567, now seen corresponding path program 1 times [2022-11-16 12:41:28,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:28,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276132553] [2022-11-16 12:41:28,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:28,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:30,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:30,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276132553] [2022-11-16 12:41:30,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276132553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:30,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:30,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:41:30,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615104899] [2022-11-16 12:41:30,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:30,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:41:30,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:30,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:41:30,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:41:30,018 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 134 [2022-11-16 12:41:30,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 239 transitions, 3047 flow. Second operand has 12 states, 12 states have (on average 101.08333333333333) internal successors, (1213), 12 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:30,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:30,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 134 [2022-11-16 12:41:30,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:33,224 INFO L130 PetriNetUnfolder]: 2969/6566 cut-off events. [2022-11-16 12:41:33,224 INFO L131 PetriNetUnfolder]: For 162414/189150 co-relation queries the response was YES. [2022-11-16 12:41:33,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55045 conditions, 6566 events. 2969/6566 cut-off events. For 162414/189150 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 55212 event pairs, 222 based on Foata normal form. 246/6591 useless extension candidates. Maximal degree in co-relation 54929. Up to 3040 conditions per place. [2022-11-16 12:41:33,328 INFO L137 encePairwiseOnDemand]: 116/134 looper letters, 124 selfloop transitions, 146 changer transitions 157/509 dead transitions. [2022-11-16 12:41:33,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 509 transitions, 9461 flow [2022-11-16 12:41:33,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 12:41:33,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 12:41:33,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3185 transitions. [2022-11-16 12:41:33,336 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7922885572139303 [2022-11-16 12:41:33,336 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3185 transitions. [2022-11-16 12:41:33,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3185 transitions. [2022-11-16 12:41:33,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:33,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3185 transitions. [2022-11-16 12:41:33,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 106.16666666666667) internal successors, (3185), 30 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:33,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 134.0) internal successors, (4154), 31 states have internal predecessors, (4154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:33,353 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 134.0) internal successors, (4154), 31 states have internal predecessors, (4154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:33,353 INFO L175 Difference]: Start difference. First operand has 187 places, 239 transitions, 3047 flow. Second operand 30 states and 3185 transitions. [2022-11-16 12:41:33,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 509 transitions, 9461 flow [2022-11-16 12:41:33,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 509 transitions, 9339 flow, removed 39 selfloop flow, removed 6 redundant places. [2022-11-16 12:41:33,604 INFO L231 Difference]: Finished difference. Result has 229 places, 302 transitions, 4912 flow [2022-11-16 12:41:33,604 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=3005, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4912, PETRI_PLACES=229, PETRI_TRANSITIONS=302} [2022-11-16 12:41:33,606 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 88 predicate places. [2022-11-16 12:41:33,607 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 302 transitions, 4912 flow [2022-11-16 12:41:33,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 101.08333333333333) internal successors, (1213), 12 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:33,608 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:33,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:33,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:41:33,608 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:41:33,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:33,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1531238461, now seen corresponding path program 2 times [2022-11-16 12:41:33,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:33,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825071718] [2022-11-16 12:41:33,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:33,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:34,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:34,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825071718] [2022-11-16 12:41:34,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825071718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:34,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:34,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 12:41:34,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342082522] [2022-11-16 12:41:34,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:34,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:41:34,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:34,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:41:34,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:41:34,651 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 134 [2022-11-16 12:41:34,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 302 transitions, 4912 flow. Second operand has 14 states, 14 states have (on average 108.42857142857143) internal successors, (1518), 14 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:34,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:34,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 134 [2022-11-16 12:41:34,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:36,614 INFO L130 PetriNetUnfolder]: 2316/5500 cut-off events. [2022-11-16 12:41:36,614 INFO L131 PetriNetUnfolder]: For 210681/238611 co-relation queries the response was YES. [2022-11-16 12:41:36,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53642 conditions, 5500 events. 2316/5500 cut-off events. For 210681/238611 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 47553 event pairs, 293 based on Foata normal form. 633/5915 useless extension candidates. Maximal degree in co-relation 53505. Up to 2638 conditions per place. [2022-11-16 12:41:36,698 INFO L137 encePairwiseOnDemand]: 121/134 looper letters, 104 selfloop transitions, 77 changer transitions 83/410 dead transitions. [2022-11-16 12:41:36,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 410 transitions, 8632 flow [2022-11-16 12:41:36,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:41:36,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:41:36,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2008 transitions. [2022-11-16 12:41:36,702 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8325041459369817 [2022-11-16 12:41:36,703 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2008 transitions. [2022-11-16 12:41:36,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2008 transitions. [2022-11-16 12:41:36,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:36,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2008 transitions. [2022-11-16 12:41:36,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 111.55555555555556) internal successors, (2008), 18 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) [2022-11-16 12:41:36,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 134.0) internal successors, (2546), 19 states have internal predecessors, (2546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:36,713 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 134.0) internal successors, (2546), 19 states have internal predecessors, (2546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:36,713 INFO L175 Difference]: Start difference. First operand has 229 places, 302 transitions, 4912 flow. Second operand 18 states and 2008 transitions. [2022-11-16 12:41:36,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 410 transitions, 8632 flow [2022-11-16 12:41:37,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 410 transitions, 7963 flow, removed 325 selfloop flow, removed 20 redundant places. [2022-11-16 12:41:37,189 INFO L231 Difference]: Finished difference. Result has 219 places, 308 transitions, 5070 flow [2022-11-16 12:41:37,189 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=4587, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5070, PETRI_PLACES=219, PETRI_TRANSITIONS=308} [2022-11-16 12:41:37,190 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 78 predicate places. [2022-11-16 12:41:37,190 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 308 transitions, 5070 flow [2022-11-16 12:41:37,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 108.42857142857143) internal successors, (1518), 14 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:37,192 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:37,192 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:37,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:41:37,192 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:41:37,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:37,193 INFO L85 PathProgramCache]: Analyzing trace with hash -978674169, now seen corresponding path program 1 times [2022-11-16 12:41:37,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:37,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443023408] [2022-11-16 12:41:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:37,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:37,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:37,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:37,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443023408] [2022-11-16 12:41:37,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443023408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:37,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:37,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:41:37,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231665103] [2022-11-16 12:41:37,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:37,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:41:37,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:37,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:41:37,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:41:37,427 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 134 [2022-11-16 12:41:37,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 308 transitions, 5070 flow. Second operand has 6 states, 6 states have (on average 110.5) internal successors, (663), 6 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:37,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:37,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 134 [2022-11-16 12:41:37,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:46,526 INFO L130 PetriNetUnfolder]: 20380/33836 cut-off events. [2022-11-16 12:41:46,526 INFO L131 PetriNetUnfolder]: For 1803363/1915415 co-relation queries the response was YES. [2022-11-16 12:41:46,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264462 conditions, 33836 events. 20380/33836 cut-off events. For 1803363/1915415 co-relation queries the response was YES. Maximal size of possible extension queue 2223. Compared 293785 event pairs, 956 based on Foata normal form. 6884/38550 useless extension candidates. Maximal degree in co-relation 264333. Up to 12875 conditions per place. [2022-11-16 12:41:47,116 INFO L137 encePairwiseOnDemand]: 123/134 looper letters, 450 selfloop transitions, 20 changer transitions 169/794 dead transitions. [2022-11-16 12:41:47,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 794 transitions, 19503 flow [2022-11-16 12:41:47,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:41:47,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:41:47,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1172 transitions. [2022-11-16 12:41:47,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8746268656716418 [2022-11-16 12:41:47,124 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1172 transitions. [2022-11-16 12:41:47,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1172 transitions. [2022-11-16 12:41:47,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:47,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1172 transitions. [2022-11-16 12:41:47,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 117.2) internal successors, (1172), 10 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:47,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:47,136 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:47,136 INFO L175 Difference]: Start difference. First operand has 219 places, 308 transitions, 5070 flow. Second operand 10 states and 1172 transitions. [2022-11-16 12:41:47,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 794 transitions, 19503 flow [2022-11-16 12:41:48,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 794 transitions, 18740 flow, removed 356 selfloop flow, removed 16 redundant places. [2022-11-16 12:41:48,790 INFO L231 Difference]: Finished difference. Result has 209 places, 315 transitions, 4772 flow [2022-11-16 12:41:48,790 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=4629, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4772, PETRI_PLACES=209, PETRI_TRANSITIONS=315} [2022-11-16 12:41:48,791 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 68 predicate places. [2022-11-16 12:41:48,791 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 315 transitions, 4772 flow [2022-11-16 12:41:48,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.5) internal successors, (663), 6 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:48,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:48,792 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:48,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:41:48,793 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:41:48,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:48,793 INFO L85 PathProgramCache]: Analyzing trace with hash 32314795, now seen corresponding path program 1 times [2022-11-16 12:41:48,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:48,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413974114] [2022-11-16 12:41:48,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:48,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:49,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:49,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413974114] [2022-11-16 12:41:49,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413974114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:49,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:49,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:41:49,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93922200] [2022-11-16 12:41:49,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:49,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:41:49,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:49,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:41:49,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:41:49,049 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 134 [2022-11-16 12:41:49,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 315 transitions, 4772 flow. Second operand has 7 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:49,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:49,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 134 [2022-11-16 12:41:49,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:57,772 INFO L130 PetriNetUnfolder]: 19200/32569 cut-off events. [2022-11-16 12:41:57,772 INFO L131 PetriNetUnfolder]: For 1692850/1809412 co-relation queries the response was YES. [2022-11-16 12:41:58,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271973 conditions, 32569 events. 19200/32569 cut-off events. For 1692850/1809412 co-relation queries the response was YES. Maximal size of possible extension queue 2414. Compared 293044 event pairs, 684 based on Foata normal form. 7496/38605 useless extension candidates. Maximal degree in co-relation 271851. Up to 11956 conditions per place. [2022-11-16 12:41:58,103 INFO L137 encePairwiseOnDemand]: 123/134 looper letters, 471 selfloop transitions, 38 changer transitions 228/886 dead transitions. [2022-11-16 12:41:58,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 886 transitions, 21413 flow [2022-11-16 12:41:58,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:41:58,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:41:58,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1527 transitions. [2022-11-16 12:41:58,107 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8765786452353617 [2022-11-16 12:41:58,107 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1527 transitions. [2022-11-16 12:41:58,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1527 transitions. [2022-11-16 12:41:58,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:58,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1527 transitions. [2022-11-16 12:41:58,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.46153846153847) internal successors, (1527), 13 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:58,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:58,116 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:58,116 INFO L175 Difference]: Start difference. First operand has 209 places, 315 transitions, 4772 flow. Second operand 13 states and 1527 transitions. [2022-11-16 12:41:58,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 886 transitions, 21413 flow [2022-11-16 12:42:01,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 886 transitions, 21108 flow, removed 17 selfloop flow, removed 5 redundant places. [2022-11-16 12:42:01,487 INFO L231 Difference]: Finished difference. Result has 222 places, 310 transitions, 4455 flow [2022-11-16 12:42:01,487 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=4182, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4455, PETRI_PLACES=222, PETRI_TRANSITIONS=310} [2022-11-16 12:42:01,487 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 81 predicate places. [2022-11-16 12:42:01,487 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 310 transitions, 4455 flow [2022-11-16 12:42:01,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:01,488 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:01,488 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:01,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:42:01,488 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:42:01,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:01,488 INFO L85 PathProgramCache]: Analyzing trace with hash -137553256, now seen corresponding path program 1 times [2022-11-16 12:42:01,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:01,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041104037] [2022-11-16 12:42:01,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:01,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:02,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:02,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:02,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041104037] [2022-11-16 12:42:02,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041104037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:02,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:02,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:42:02,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506690939] [2022-11-16 12:42:02,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:02,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:42:02,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:02,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:42:02,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:42:02,275 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 134 [2022-11-16 12:42:02,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 310 transitions, 4455 flow. Second operand has 7 states, 7 states have (on average 102.57142857142857) internal successors, (718), 7 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:02,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:02,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 134 [2022-11-16 12:42:02,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:05,927 INFO L130 PetriNetUnfolder]: 4599/14804 cut-off events. [2022-11-16 12:42:05,927 INFO L131 PetriNetUnfolder]: For 170549/181141 co-relation queries the response was YES. [2022-11-16 12:42:06,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80331 conditions, 14804 events. 4599/14804 cut-off events. For 170549/181141 co-relation queries the response was YES. Maximal size of possible extension queue 1635. Compared 193470 event pairs, 458 based on Foata normal form. 449/14201 useless extension candidates. Maximal degree in co-relation 80195. Up to 3986 conditions per place. [2022-11-16 12:42:06,179 INFO L137 encePairwiseOnDemand]: 126/134 looper letters, 249 selfloop transitions, 38 changer transitions 44/451 dead transitions. [2022-11-16 12:42:06,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 451 transitions, 9291 flow [2022-11-16 12:42:06,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:42:06,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:42:06,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1084 transitions. [2022-11-16 12:42:06,182 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.808955223880597 [2022-11-16 12:42:06,182 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1084 transitions. [2022-11-16 12:42:06,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1084 transitions. [2022-11-16 12:42:06,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:06,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1084 transitions. [2022-11-16 12:42:06,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 108.4) internal successors, (1084), 10 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:06,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:06,189 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:06,189 INFO L175 Difference]: Start difference. First operand has 222 places, 310 transitions, 4455 flow. Second operand 10 states and 1084 transitions. [2022-11-16 12:42:06,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 451 transitions, 9291 flow [2022-11-16 12:42:08,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 451 transitions, 9196 flow, removed 38 selfloop flow, removed 4 redundant places. [2022-11-16 12:42:08,423 INFO L231 Difference]: Finished difference. Result has 234 places, 313 transitions, 4518 flow [2022-11-16 12:42:08,423 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=4360, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4518, PETRI_PLACES=234, PETRI_TRANSITIONS=313} [2022-11-16 12:42:08,424 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 93 predicate places. [2022-11-16 12:42:08,424 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 313 transitions, 4518 flow [2022-11-16 12:42:08,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 102.57142857142857) internal successors, (718), 7 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:08,424 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:08,424 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:08,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:42:08,425 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:42:08,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:08,425 INFO L85 PathProgramCache]: Analyzing trace with hash -135014502, now seen corresponding path program 1 times [2022-11-16 12:42:08,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:08,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886523158] [2022-11-16 12:42:08,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:08,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:08,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:08,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886523158] [2022-11-16 12:42:08,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886523158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:08,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:08,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:42:08,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238434989] [2022-11-16 12:42:08,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:08,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:42:08,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:08,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:42:08,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:42:08,682 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 134 [2022-11-16 12:42:08,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 313 transitions, 4518 flow. Second operand has 8 states, 8 states have (on average 110.25) internal successors, (882), 8 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:08,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:08,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 134 [2022-11-16 12:42:08,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:21,358 INFO L130 PetriNetUnfolder]: 25403/43512 cut-off events. [2022-11-16 12:42:21,358 INFO L131 PetriNetUnfolder]: For 2355577/2510555 co-relation queries the response was YES. [2022-11-16 12:42:21,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378957 conditions, 43512 events. 25403/43512 cut-off events. For 2355577/2510555 co-relation queries the response was YES. Maximal size of possible extension queue 3267. Compared 416050 event pairs, 644 based on Foata normal form. 8755/50441 useless extension candidates. Maximal degree in co-relation 378822. Up to 15529 conditions per place. [2022-11-16 12:42:21,888 INFO L137 encePairwiseOnDemand]: 123/134 looper letters, 263 selfloop transitions, 54 changer transitions 452/910 dead transitions. [2022-11-16 12:42:21,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 910 transitions, 22009 flow [2022-11-16 12:42:21,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:42:21,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:42:21,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1881 transitions. [2022-11-16 12:42:21,892 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8773320895522388 [2022-11-16 12:42:21,892 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1881 transitions. [2022-11-16 12:42:21,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1881 transitions. [2022-11-16 12:42:21,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:21,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1881 transitions. [2022-11-16 12:42:21,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 117.5625) internal successors, (1881), 16 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:21,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 134.0) internal successors, (2278), 17 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:21,900 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 134.0) internal successors, (2278), 17 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:21,900 INFO L175 Difference]: Start difference. First operand has 234 places, 313 transitions, 4518 flow. Second operand 16 states and 1881 transitions. [2022-11-16 12:42:21,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 910 transitions, 22009 flow [2022-11-16 12:42:34,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 910 transitions, 21451 flow, removed 259 selfloop flow, removed 3 redundant places. [2022-11-16 12:42:34,730 INFO L231 Difference]: Finished difference. Result has 250 places, 266 transitions, 3381 flow [2022-11-16 12:42:34,731 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=4042, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3381, PETRI_PLACES=250, PETRI_TRANSITIONS=266} [2022-11-16 12:42:34,731 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 109 predicate places. [2022-11-16 12:42:34,731 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 266 transitions, 3381 flow [2022-11-16 12:42:34,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 110.25) internal successors, (882), 8 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:34,732 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:34,732 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:34,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:42:34,732 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:42:34,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:34,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1503458782, now seen corresponding path program 1 times [2022-11-16 12:42:34,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:34,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847746350] [2022-11-16 12:42:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:34,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:35,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:35,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:35,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847746350] [2022-11-16 12:42:35,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847746350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:35,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:35,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:42:35,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241061802] [2022-11-16 12:42:35,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:35,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:42:35,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:35,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:42:35,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:42:35,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 134 [2022-11-16 12:42:35,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 266 transitions, 3381 flow. Second operand has 9 states, 9 states have (on average 110.11111111111111) internal successors, (991), 9 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:35,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:35,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 134 [2022-11-16 12:42:35,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand