./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea1c3e2-61cc-4ebf-8fd3-654f5336c080/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea1c3e2-61cc-4ebf-8fd3-654f5336c080/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea1c3e2-61cc-4ebf-8fd3-654f5336c080/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea1c3e2-61cc-4ebf-8fd3-654f5336c080/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea1c3e2-61cc-4ebf-8fd3-654f5336c080/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea1c3e2-61cc-4ebf-8fd3-654f5336c080/bin/uautomizer-J5u9QxTXDZ --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 c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --- 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-dbf71c6-m [2022-10-17 10:13:58,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:13:58,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:13:58,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:13:58,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:13:58,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:13:58,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:13:58,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:13:58,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:13:58,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:13:58,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:13:58,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:13:58,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:13:58,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:13:58,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:13:58,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:13:58,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:13:58,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:13:58,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:13:58,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:13:58,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:13:58,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:13:58,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:13:58,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:13:58,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:13:58,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:13:58,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:13:58,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:13:58,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:13:58,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:13:58,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:13:58,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:13:58,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:13:58,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:13:58,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:13:58,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:13:58,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:13:58,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:13:58,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:13:58,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:13:58,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:13:58,895 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea1c3e2-61cc-4ebf-8fd3-654f5336c080/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:13:58,955 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:13:58,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:13:58,956 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:13:58,956 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:13:58,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:13:58,958 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:13:58,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:13:58,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:13:58,959 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:13:58,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:13:58,961 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:13:58,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:13:58,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:13:58,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:13:58,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:13:58,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:13:58,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:13:58,962 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:13:58,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:13:58,963 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:13:58,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:13:58,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:13:58,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:13:58,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:13:58,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:13:58,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:13:58,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:13:58,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:13:58,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:13:58,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:13:58,975 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:13:58,976 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:13:58,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:13:58,976 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_9ea1c3e2-61cc-4ebf-8fd3-654f5336c080/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea1c3e2-61cc-4ebf-8fd3-654f5336c080/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 [2022-10-17 10:13:59,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:13:59,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:13:59,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:13:59,331 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:13:59,334 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:13:59,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea1c3e2-61cc-4ebf-8fd3-654f5336c080/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2022-10-17 10:13:59,407 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea1c3e2-61cc-4ebf-8fd3-654f5336c080/bin/uautomizer-J5u9QxTXDZ/data/86b042cf2/2791c12f64714e9d82fd60227365d51d/FLAG38a896b77 [2022-10-17 10:14:00,032 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:14:00,033 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea1c3e2-61cc-4ebf-8fd3-654f5336c080/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2022-10-17 10:14:00,046 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea1c3e2-61cc-4ebf-8fd3-654f5336c080/bin/uautomizer-J5u9QxTXDZ/data/86b042cf2/2791c12f64714e9d82fd60227365d51d/FLAG38a896b77 [2022-10-17 10:14:00,307 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea1c3e2-61cc-4ebf-8fd3-654f5336c080/bin/uautomizer-J5u9QxTXDZ/data/86b042cf2/2791c12f64714e9d82fd60227365d51d [2022-10-17 10:14:00,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:14:00,311 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:14:00,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:14:00,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:14:00,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:14:00,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:14:00" (1/1) ... [2022-10-17 10:14:00,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d96f26b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:00, skipping insertion in model container [2022-10-17 10:14:00,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:14:00" (1/1) ... [2022-10-17 10:14:00,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:14:00,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:14:00,738 WARN L230 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_9ea1c3e2-61cc-4ebf-8fd3-654f5336c080/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i[30422,30435] [2022-10-17 10:14:00,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:14:00,754 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:14:00,790 WARN L230 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_9ea1c3e2-61cc-4ebf-8fd3-654f5336c080/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i[30422,30435] [2022-10-17 10:14:00,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:14:00,831 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:14:00,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:00 WrapperNode [2022-10-17 10:14:00,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:14:00,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:14:00,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:14:00,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:14:00,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:00" (1/1) ... [2022-10-17 10:14:00,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:00" (1/1) ... [2022-10-17 10:14:00,875 INFO L138 Inliner]: procedures = 170, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 59 [2022-10-17 10:14:00,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:14:00,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:14:00,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:14:00,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:14:00,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:00" (1/1) ... [2022-10-17 10:14:00,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:00" (1/1) ... [2022-10-17 10:14:00,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:00" (1/1) ... [2022-10-17 10:14:00,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:00" (1/1) ... [2022-10-17 10:14:00,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:00" (1/1) ... [2022-10-17 10:14:00,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:00" (1/1) ... [2022-10-17 10:14:00,898 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:00" (1/1) ... [2022-10-17 10:14:00,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:00" (1/1) ... [2022-10-17 10:14:00,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:14:00,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:14:00,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:14:00,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:14:00,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:00" (1/1) ... [2022-10-17 10:14:00,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:14:00,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea1c3e2-61cc-4ebf-8fd3-654f5336c080/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:14:00,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea1c3e2-61cc-4ebf-8fd3-654f5336c080/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:14:00,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea1c3e2-61cc-4ebf-8fd3-654f5336c080/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:14:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-10-17 10:14:01,019 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-10-17 10:14:01,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:14:01,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:14:01,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:14:01,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:14:01,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:14:01,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:14:01,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:14:01,023 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:14:01,166 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:14:01,168 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:14:01,371 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:14:01,410 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:14:01,410 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:14:01,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:14:01 BoogieIcfgContainer [2022-10-17 10:14:01,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:14:01,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:14:01,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:14:01,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:14:01,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:14:00" (1/3) ... [2022-10-17 10:14:01,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7245b685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:14:01, skipping insertion in model container [2022-10-17 10:14:01,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:00" (2/3) ... [2022-10-17 10:14:01,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7245b685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:14:01, skipping insertion in model container [2022-10-17 10:14:01,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:14:01" (3/3) ... [2022-10-17 10:14:01,424 INFO L112 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2022-10-17 10:14:01,436 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:14:01,447 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:14:01,447 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:14:01,447 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:14:01,495 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:14:01,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 56 transitions, 117 flow [2022-10-17 10:14:01,592 INFO L130 PetriNetUnfolder]: 6/67 cut-off events. [2022-10-17 10:14:01,593 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:14:01,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 67 events. 6/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 40. Up to 4 conditions per place. [2022-10-17 10:14:01,597 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 56 transitions, 117 flow [2022-10-17 10:14:01,623 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 56 transitions, 117 flow [2022-10-17 10:14:01,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:14:01,640 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;@29f83d62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:14:01,640 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-10-17 10:14:01,655 INFO L130 PetriNetUnfolder]: 2/45 cut-off events. [2022-10-17 10:14:01,655 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:14:01,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:01,656 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:01,656 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:14:01,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:01,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1552839894, now seen corresponding path program 1 times [2022-10-17 10:14:01,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:01,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555316074] [2022-10-17 10:14:01,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:01,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:14:01,856 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:14:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:14:01,931 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:14:01,933 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:14:01,935 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-10-17 10:14:01,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-10-17 10:14:01,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-10-17 10:14:01,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:14:01,939 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-17 10:14:01,950 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 10:14:01,950 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-10-17 10:14:02,010 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:14:02,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 84 transitions, 180 flow [2022-10-17 10:14:02,080 INFO L130 PetriNetUnfolder]: 11/108 cut-off events. [2022-10-17 10:14:02,081 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 10:14:02,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 108 events. 11/108 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 183 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 68. Up to 6 conditions per place. [2022-10-17 10:14:02,085 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 84 transitions, 180 flow [2022-10-17 10:14:02,092 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 84 transitions, 180 flow [2022-10-17 10:14:02,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:14:02,096 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;@29f83d62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:14:02,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 10:14:02,140 INFO L130 PetriNetUnfolder]: 6/77 cut-off events. [2022-10-17 10:14:02,143 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 10:14:02,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:02,144 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:02,145 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-10-17 10:14:02,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:02,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1549820851, now seen corresponding path program 1 times [2022-10-17 10:14:02,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:02,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687073720] [2022-10-17 10:14:02,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:02,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:14:02,209 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:14:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:14:02,257 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:14:02,261 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:14:02,261 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-10-17 10:14:02,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-10-17 10:14:02,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-10-17 10:14:02,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-10-17 10:14:02,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:14:02,263 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-17 10:14:02,265 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 10:14:02,266 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-10-17 10:14:02,321 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:14:02,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 112 transitions, 245 flow [2022-10-17 10:14:02,383 INFO L130 PetriNetUnfolder]: 16/149 cut-off events. [2022-10-17 10:14:02,384 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-10-17 10:14:02,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 149 events. 16/149 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 330 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 112. Up to 8 conditions per place. [2022-10-17 10:14:02,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 112 transitions, 245 flow [2022-10-17 10:14:02,393 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 112 transitions, 245 flow [2022-10-17 10:14:02,394 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:14:02,400 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;@29f83d62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:14:02,401 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-10-17 10:14:02,420 INFO L130 PetriNetUnfolder]: 6/88 cut-off events. [2022-10-17 10:14:02,420 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-10-17 10:14:02,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:02,420 INFO L208 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] [2022-10-17 10:14:02,422 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-10-17 10:14:02,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:02,422 INFO L85 PathProgramCache]: Analyzing trace with hash 290827468, now seen corresponding path program 1 times [2022-10-17 10:14:02,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:02,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738515031] [2022-10-17 10:14:02,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:02,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:02,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:02,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:02,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738515031] [2022-10-17 10:14:02,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738515031] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:02,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:02,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:14:02,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95848746] [2022-10-17 10:14:02,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:02,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:14:02,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:02,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:14:02,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:14:02,677 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 112 [2022-10-17 10:14:02,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 112 transitions, 245 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:02,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:02,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 112 [2022-10-17 10:14:02,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:03,046 INFO L130 PetriNetUnfolder]: 230/859 cut-off events. [2022-10-17 10:14:03,046 INFO L131 PetriNetUnfolder]: For 241/241 co-relation queries the response was YES. [2022-10-17 10:14:03,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 859 events. 230/859 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5699 event pairs, 114 based on Foata normal form. 203/902 useless extension candidates. Maximal degree in co-relation 313. Up to 206 conditions per place. [2022-10-17 10:14:03,064 INFO L137 encePairwiseOnDemand]: 105/112 looper letters, 21 selfloop transitions, 1 changer transitions 0/107 dead transitions. [2022-10-17 10:14:03,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 107 transitions, 291 flow [2022-10-17 10:14:03,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:14:03,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:14:03,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2022-10-17 10:14:03,086 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9017857142857143 [2022-10-17 10:14:03,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2022-10-17 10:14:03,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2022-10-17 10:14:03,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:03,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2022-10-17 10:14:03,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:03,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:03,107 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:03,109 INFO L175 Difference]: Start difference. First operand has 106 places, 112 transitions, 245 flow. Second operand 3 states and 303 transitions. [2022-10-17 10:14:03,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 107 transitions, 291 flow [2022-10-17 10:14:03,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 107 transitions, 283 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-10-17 10:14:03,119 INFO L231 Difference]: Finished difference. Result has 100 places, 99 transitions, 218 flow [2022-10-17 10:14:03,121 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=100, PETRI_TRANSITIONS=99} [2022-10-17 10:14:03,128 INFO L287 CegarLoopForPetriNet]: 106 programPoint places, -6 predicate places. [2022-10-17 10:14:03,129 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 99 transitions, 218 flow [2022-10-17 10:14:03,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:03,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:03,130 INFO L208 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] [2022-10-17 10:14:03,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:14:03,130 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-10-17 10:14:03,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:03,131 INFO L85 PathProgramCache]: Analyzing trace with hash 290828491, now seen corresponding path program 1 times [2022-10-17 10:14:03,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:03,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356996908] [2022-10-17 10:14:03,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:03,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:03,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:03,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:03,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356996908] [2022-10-17 10:14:03,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356996908] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:03,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:03,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:14:03,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317418883] [2022-10-17 10:14:03,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:03,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:14:03,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:03,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:14:03,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:14:03,249 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2022-10-17 10:14:03,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 99 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:03,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:03,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2022-10-17 10:14:03,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:03,502 INFO L130 PetriNetUnfolder]: 336/1288 cut-off events. [2022-10-17 10:14:03,503 INFO L131 PetriNetUnfolder]: For 206/206 co-relation queries the response was YES. [2022-10-17 10:14:03,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2012 conditions, 1288 events. 336/1288 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 10165 event pairs, 168 based on Foata normal form. 0/1130 useless extension candidates. Maximal degree in co-relation 1847. Up to 299 conditions per place. [2022-10-17 10:14:03,549 INFO L137 encePairwiseOnDemand]: 108/112 looper letters, 24 selfloop transitions, 3 changer transitions 0/107 dead transitions. [2022-10-17 10:14:03,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 107 transitions, 298 flow [2022-10-17 10:14:03,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:14:03,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:14:03,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2022-10-17 10:14:03,551 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8422619047619048 [2022-10-17 10:14:03,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2022-10-17 10:14:03,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2022-10-17 10:14:03,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:03,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2022-10-17 10:14:03,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:03,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:03,556 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:03,557 INFO L175 Difference]: Start difference. First operand has 100 places, 99 transitions, 218 flow. Second operand 3 states and 283 transitions. [2022-10-17 10:14:03,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 107 transitions, 298 flow [2022-10-17 10:14:03,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 107 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:14:03,563 INFO L231 Difference]: Finished difference. Result has 103 places, 100 transitions, 235 flow [2022-10-17 10:14:03,564 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=103, PETRI_TRANSITIONS=100} [2022-10-17 10:14:03,564 INFO L287 CegarLoopForPetriNet]: 106 programPoint places, -3 predicate places. [2022-10-17 10:14:03,565 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 100 transitions, 235 flow [2022-10-17 10:14:03,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:03,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:03,566 INFO L208 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] [2022-10-17 10:14:03,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:14:03,566 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-10-17 10:14:03,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:03,567 INFO L85 PathProgramCache]: Analyzing trace with hash 289874156, now seen corresponding path program 1 times [2022-10-17 10:14:03,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:03,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802870221] [2022-10-17 10:14:03,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:03,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:03,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:03,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:03,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802870221] [2022-10-17 10:14:03,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802870221] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:03,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:03,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:14:03,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626806651] [2022-10-17 10:14:03,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:03,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:14:03,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:03,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:14:03,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:14:03,628 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2022-10-17 10:14:03,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 100 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:03,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:03,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2022-10-17 10:14:03,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:03,888 INFO L130 PetriNetUnfolder]: 276/1108 cut-off events. [2022-10-17 10:14:03,888 INFO L131 PetriNetUnfolder]: For 286/286 co-relation queries the response was YES. [2022-10-17 10:14:03,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 1108 events. 276/1108 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8310 event pairs, 150 based on Foata normal form. 26/1027 useless extension candidates. Maximal degree in co-relation 1608. Up to 268 conditions per place. [2022-10-17 10:14:03,908 INFO L137 encePairwiseOnDemand]: 109/112 looper letters, 24 selfloop transitions, 1 changer transitions 0/105 dead transitions. [2022-10-17 10:14:03,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 105 transitions, 297 flow [2022-10-17 10:14:03,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:14:03,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:14:03,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2022-10-17 10:14:03,910 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2022-10-17 10:14:03,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2022-10-17 10:14:03,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2022-10-17 10:14:03,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:03,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2022-10-17 10:14:03,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:03,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:03,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:03,920 INFO L175 Difference]: Start difference. First operand has 103 places, 100 transitions, 235 flow. Second operand 3 states and 282 transitions. [2022-10-17 10:14:03,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 105 transitions, 297 flow [2022-10-17 10:14:03,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 105 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:14:03,928 INFO L231 Difference]: Finished difference. Result has 104 places, 98 transitions, 224 flow [2022-10-17 10:14:03,928 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=104, PETRI_TRANSITIONS=98} [2022-10-17 10:14:03,930 INFO L287 CegarLoopForPetriNet]: 106 programPoint places, -2 predicate places. [2022-10-17 10:14:03,930 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 98 transitions, 224 flow [2022-10-17 10:14:03,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:03,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:03,932 INFO L208 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] [2022-10-17 10:14:03,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:14:03,932 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-10-17 10:14:03,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:03,933 INFO L85 PathProgramCache]: Analyzing trace with hash 289875179, now seen corresponding path program 1 times [2022-10-17 10:14:03,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:03,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068765408] [2022-10-17 10:14:03,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:03,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:04,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:04,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068765408] [2022-10-17 10:14:04,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068765408] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:04,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:04,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:14:04,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668059234] [2022-10-17 10:14:04,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:04,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:14:04,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:04,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:14:04,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:14:04,045 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 112 [2022-10-17 10:14:04,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 98 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:04,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:04,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 112 [2022-10-17 10:14:04,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:04,218 INFO L130 PetriNetUnfolder]: 186/750 cut-off events. [2022-10-17 10:14:04,219 INFO L131 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2022-10-17 10:14:04,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 750 events. 186/750 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4910 event pairs, 96 based on Foata normal form. 13/671 useless extension candidates. Maximal degree in co-relation 909. Up to 175 conditions per place. [2022-10-17 10:14:04,230 INFO L137 encePairwiseOnDemand]: 110/112 looper letters, 20 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2022-10-17 10:14:04,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 103 transitions, 284 flow [2022-10-17 10:14:04,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:14:04,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:14:04,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2022-10-17 10:14:04,232 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8690476190476191 [2022-10-17 10:14:04,232 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2022-10-17 10:14:04,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2022-10-17 10:14:04,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:04,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2022-10-17 10:14:04,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:04,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:04,235 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:04,235 INFO L175 Difference]: Start difference. First operand has 104 places, 98 transitions, 224 flow. Second operand 3 states and 292 transitions. [2022-10-17 10:14:04,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 103 transitions, 284 flow [2022-10-17 10:14:04,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 103 transitions, 279 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-10-17 10:14:04,244 INFO L231 Difference]: Finished difference. Result has 102 places, 96 transitions, 218 flow [2022-10-17 10:14:04,245 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=102, PETRI_TRANSITIONS=96} [2022-10-17 10:14:04,247 INFO L287 CegarLoopForPetriNet]: 106 programPoint places, -4 predicate places. [2022-10-17 10:14:04,247 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 96 transitions, 218 flow [2022-10-17 10:14:04,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:04,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:04,248 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:04,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:14:04,248 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-10-17 10:14:04,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:04,249 INFO L85 PathProgramCache]: Analyzing trace with hash -337068427, now seen corresponding path program 1 times [2022-10-17 10:14:04,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:04,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574062662] [2022-10-17 10:14:04,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:04,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:14:04,292 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:14:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:14:04,315 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:14:04,315 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:14:04,315 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-10-17 10:14:04,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-10-17 10:14:04,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-10-17 10:14:04,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-10-17 10:14:04,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-10-17 10:14:04,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:14:04,316 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-10-17 10:14:04,317 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 10:14:04,317 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-10-17 10:14:04,368 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:14:04,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 140 transitions, 312 flow [2022-10-17 10:14:04,400 INFO L130 PetriNetUnfolder]: 21/190 cut-off events. [2022-10-17 10:14:04,400 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-10-17 10:14:04,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 190 events. 21/190 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 484 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 157. Up to 10 conditions per place. [2022-10-17 10:14:04,403 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 140 transitions, 312 flow [2022-10-17 10:14:04,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 140 transitions, 312 flow [2022-10-17 10:14:04,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:14:04,408 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;@29f83d62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:14:04,408 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-10-17 10:14:04,418 INFO L130 PetriNetUnfolder]: 7/90 cut-off events. [2022-10-17 10:14:04,418 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-10-17 10:14:04,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:04,418 INFO L208 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] [2022-10-17 10:14:04,419 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 10:14:04,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:04,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1050254578, now seen corresponding path program 1 times [2022-10-17 10:14:04,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:04,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368461630] [2022-10-17 10:14:04,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:04,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:04,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:04,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:04,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368461630] [2022-10-17 10:14:04,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368461630] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:04,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:04,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:14:04,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476528718] [2022-10-17 10:14:04,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:04,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:14:04,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:04,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:14:04,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:14:04,472 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-10-17 10:14:04,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 140 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:04,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:04,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-10-17 10:14:04,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:05,486 INFO L130 PetriNetUnfolder]: 1472/5084 cut-off events. [2022-10-17 10:14:05,488 INFO L131 PetriNetUnfolder]: For 2029/2029 co-relation queries the response was YES. [2022-10-17 10:14:05,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7983 conditions, 5084 events. 1472/5084 cut-off events. For 2029/2029 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 50575 event pairs, 771 based on Foata normal form. 1083/5480 useless extension candidates. Maximal degree in co-relation 2515. Up to 1172 conditions per place. [2022-10-17 10:14:05,579 INFO L137 encePairwiseOnDemand]: 129/140 looper letters, 31 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2022-10-17 10:14:05,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 137 transitions, 395 flow [2022-10-17 10:14:05,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:14:05,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:14:05,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2022-10-17 10:14:05,582 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8857142857142857 [2022-10-17 10:14:05,582 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2022-10-17 10:14:05,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2022-10-17 10:14:05,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:05,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2022-10-17 10:14:05,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:05,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:05,586 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:05,586 INFO L175 Difference]: Start difference. First operand has 132 places, 140 transitions, 312 flow. Second operand 3 states and 372 transitions. [2022-10-17 10:14:05,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 137 transitions, 395 flow [2022-10-17 10:14:05,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 137 transitions, 377 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-10-17 10:14:05,594 INFO L231 Difference]: Finished difference. Result has 126 places, 127 transitions, 294 flow [2022-10-17 10:14:05,594 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=126, PETRI_TRANSITIONS=127} [2022-10-17 10:14:05,598 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, -6 predicate places. [2022-10-17 10:14:05,598 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 127 transitions, 294 flow [2022-10-17 10:14:05,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:05,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:05,599 INFO L208 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] [2022-10-17 10:14:05,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:14:05,599 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 10:14:05,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:05,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1050253555, now seen corresponding path program 1 times [2022-10-17 10:14:05,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:05,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480077835] [2022-10-17 10:14:05,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:05,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:05,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:05,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:05,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480077835] [2022-10-17 10:14:05,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480077835] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:05,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:05,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:14:05,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358782554] [2022-10-17 10:14:05,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:05,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:14:05,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:05,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:14:05,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:14:05,674 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-10-17 10:14:05,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 127 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:05,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:05,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-10-17 10:14:05,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:06,431 INFO L130 PetriNetUnfolder]: 1062/3773 cut-off events. [2022-10-17 10:14:06,431 INFO L131 PetriNetUnfolder]: For 484/484 co-relation queries the response was YES. [2022-10-17 10:14:06,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5754 conditions, 3773 events. 1062/3773 cut-off events. For 484/484 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 35460 event pairs, 609 based on Foata normal form. 0/3299 useless extension candidates. Maximal degree in co-relation 4941. Up to 930 conditions per place. [2022-10-17 10:14:06,504 INFO L137 encePairwiseOnDemand]: 138/140 looper letters, 27 selfloop transitions, 1 changer transitions 0/137 dead transitions. [2022-10-17 10:14:06,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 137 transitions, 383 flow [2022-10-17 10:14:06,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:14:06,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:14:06,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2022-10-17 10:14:06,506 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8761904761904762 [2022-10-17 10:14:06,507 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 368 transitions. [2022-10-17 10:14:06,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 368 transitions. [2022-10-17 10:14:06,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:06,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 368 transitions. [2022-10-17 10:14:06,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:06,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:06,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:06,515 INFO L175 Difference]: Start difference. First operand has 126 places, 127 transitions, 294 flow. Second operand 3 states and 368 transitions. [2022-10-17 10:14:06,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 137 transitions, 383 flow [2022-10-17 10:14:06,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 137 transitions, 378 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-10-17 10:14:06,525 INFO L231 Difference]: Finished difference. Result has 128 places, 126 transitions, 290 flow [2022-10-17 10:14:06,525 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=128, PETRI_TRANSITIONS=126} [2022-10-17 10:14:06,527 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, -4 predicate places. [2022-10-17 10:14:06,528 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 126 transitions, 290 flow [2022-10-17 10:14:06,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:06,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:06,529 INFO L208 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] [2022-10-17 10:14:06,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:14:06,529 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 10:14:06,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:06,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1049301266, now seen corresponding path program 1 times [2022-10-17 10:14:06,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:06,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719141420] [2022-10-17 10:14:06,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:06,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:06,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:06,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719141420] [2022-10-17 10:14:06,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719141420] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:06,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:06,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:14:06,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073132455] [2022-10-17 10:14:06,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:06,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:14:06,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:06,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:14:06,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:14:06,585 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-10-17 10:14:06,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 126 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:06,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:06,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-10-17 10:14:06,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:07,186 INFO L130 PetriNetUnfolder]: 864/3097 cut-off events. [2022-10-17 10:14:07,186 INFO L131 PetriNetUnfolder]: For 472/472 co-relation queries the response was YES. [2022-10-17 10:14:07,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4757 conditions, 3097 events. 864/3097 cut-off events. For 472/472 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 27385 event pairs, 447 based on Foata normal form. 40/2786 useless extension candidates. Maximal degree in co-relation 3964. Up to 688 conditions per place. [2022-10-17 10:14:07,230 INFO L137 encePairwiseOnDemand]: 138/140 looper letters, 26 selfloop transitions, 1 changer transitions 0/134 dead transitions. [2022-10-17 10:14:07,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 134 transitions, 370 flow [2022-10-17 10:14:07,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:14:07,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:14:07,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2022-10-17 10:14:07,233 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8738095238095238 [2022-10-17 10:14:07,233 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2022-10-17 10:14:07,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2022-10-17 10:14:07,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:07,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2022-10-17 10:14:07,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:07,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:07,237 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:07,237 INFO L175 Difference]: Start difference. First operand has 128 places, 126 transitions, 290 flow. Second operand 3 states and 367 transitions. [2022-10-17 10:14:07,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 134 transitions, 370 flow [2022-10-17 10:14:07,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 134 transitions, 363 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-10-17 10:14:07,243 INFO L231 Difference]: Finished difference. Result has 128 places, 124 transitions, 279 flow [2022-10-17 10:14:07,244 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=128, PETRI_TRANSITIONS=124} [2022-10-17 10:14:07,245 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, -4 predicate places. [2022-10-17 10:14:07,245 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 279 flow [2022-10-17 10:14:07,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:07,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:07,245 INFO L208 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] [2022-10-17 10:14:07,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 10:14:07,246 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 10:14:07,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:07,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1049300243, now seen corresponding path program 1 times [2022-10-17 10:14:07,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:07,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324535563] [2022-10-17 10:14:07,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:07,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:07,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:07,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:07,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324535563] [2022-10-17 10:14:07,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324535563] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:07,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:07,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:14:07,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352427822] [2022-10-17 10:14:07,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:07,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:14:07,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:07,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:14:07,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:14:07,282 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-10-17 10:14:07,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 279 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:07,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:07,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-10-17 10:14:07,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:07,965 INFO L130 PetriNetUnfolder]: 1200/4364 cut-off events. [2022-10-17 10:14:07,965 INFO L131 PetriNetUnfolder]: For 509/509 co-relation queries the response was YES. [2022-10-17 10:14:08,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6467 conditions, 4364 events. 1200/4364 cut-off events. For 509/509 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 42778 event pairs, 690 based on Foata normal form. 0/3871 useless extension candidates. Maximal degree in co-relation 6330. Up to 1051 conditions per place. [2022-10-17 10:14:08,035 INFO L137 encePairwiseOnDemand]: 138/140 looper letters, 29 selfloop transitions, 1 changer transitions 0/132 dead transitions. [2022-10-17 10:14:08,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 132 transitions, 369 flow [2022-10-17 10:14:08,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:14:08,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:14:08,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2022-10-17 10:14:08,037 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8452380952380952 [2022-10-17 10:14:08,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2022-10-17 10:14:08,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2022-10-17 10:14:08,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:08,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2022-10-17 10:14:08,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:08,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:08,041 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:08,041 INFO L175 Difference]: Start difference. First operand has 128 places, 124 transitions, 279 flow. Second operand 3 states and 355 transitions. [2022-10-17 10:14:08,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 132 transitions, 369 flow [2022-10-17 10:14:08,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 132 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:14:08,048 INFO L231 Difference]: Finished difference. Result has 127 places, 122 transitions, 275 flow [2022-10-17 10:14:08,049 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=127, PETRI_TRANSITIONS=122} [2022-10-17 10:14:08,049 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2022-10-17 10:14:08,050 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 122 transitions, 275 flow [2022-10-17 10:14:08,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:08,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:08,050 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:08,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 10:14:08,051 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 10:14:08,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:08,051 INFO L85 PathProgramCache]: Analyzing trace with hash -344456956, now seen corresponding path program 1 times [2022-10-17 10:14:08,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:08,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966303230] [2022-10-17 10:14:08,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:08,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:14:08,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:08,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966303230] [2022-10-17 10:14:08,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966303230] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:08,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:08,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:14:08,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929374972] [2022-10-17 10:14:08,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:08,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:14:08,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:08,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:14:08,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:14:08,091 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-10-17 10:14:08,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 122 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:08,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:08,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-10-17 10:14:08,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:08,932 INFO L130 PetriNetUnfolder]: 1850/5480 cut-off events. [2022-10-17 10:14:08,933 INFO L131 PetriNetUnfolder]: For 685/685 co-relation queries the response was YES. [2022-10-17 10:14:09,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8599 conditions, 5480 events. 1850/5480 cut-off events. For 685/685 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 53028 event pairs, 1062 based on Foata normal form. 0/4607 useless extension candidates. Maximal degree in co-relation 6356. Up to 1587 conditions per place. [2022-10-17 10:14:09,131 INFO L137 encePairwiseOnDemand]: 135/140 looper letters, 30 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2022-10-17 10:14:09,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 133 transitions, 373 flow [2022-10-17 10:14:09,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:14:09,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:14:09,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2022-10-17 10:14:09,134 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8547619047619047 [2022-10-17 10:14:09,134 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2022-10-17 10:14:09,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2022-10-17 10:14:09,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:09,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2022-10-17 10:14:09,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:09,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:09,138 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:09,138 INFO L175 Difference]: Start difference. First operand has 127 places, 122 transitions, 275 flow. Second operand 3 states and 359 transitions. [2022-10-17 10:14:09,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 133 transitions, 373 flow [2022-10-17 10:14:09,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 133 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:14:09,143 INFO L231 Difference]: Finished difference. Result has 130 places, 124 transitions, 298 flow [2022-10-17 10:14:09,143 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=130, PETRI_TRANSITIONS=124} [2022-10-17 10:14:09,144 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, -2 predicate places. [2022-10-17 10:14:09,144 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 124 transitions, 298 flow [2022-10-17 10:14:09,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:09,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:09,145 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:09,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-17 10:14:09,145 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 10:14:09,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:09,146 INFO L85 PathProgramCache]: Analyzing trace with hash -343502621, now seen corresponding path program 1 times [2022-10-17 10:14:09,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:09,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515213159] [2022-10-17 10:14:09,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:09,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:09,185 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:14:09,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:09,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515213159] [2022-10-17 10:14:09,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515213159] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:09,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:09,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:14:09,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827506597] [2022-10-17 10:14:09,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:09,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:14:09,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:09,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:14:09,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:14:09,188 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-10-17 10:14:09,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 124 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:09,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:09,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-10-17 10:14:09,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:10,210 INFO L130 PetriNetUnfolder]: 1746/5376 cut-off events. [2022-10-17 10:14:10,210 INFO L131 PetriNetUnfolder]: For 1305/1305 co-relation queries the response was YES. [2022-10-17 10:14:10,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8704 conditions, 5376 events. 1746/5376 cut-off events. For 1305/1305 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 53024 event pairs, 1062 based on Foata normal form. 104/4754 useless extension candidates. Maximal degree in co-relation 6030. Up to 1587 conditions per place. [2022-10-17 10:14:10,315 INFO L137 encePairwiseOnDemand]: 137/140 looper letters, 30 selfloop transitions, 1 changer transitions 0/131 dead transitions. [2022-10-17 10:14:10,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 131 transitions, 376 flow [2022-10-17 10:14:10,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:14:10,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:14:10,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2022-10-17 10:14:10,318 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.85 [2022-10-17 10:14:10,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2022-10-17 10:14:10,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2022-10-17 10:14:10,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:10,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2022-10-17 10:14:10,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:10,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:10,322 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:10,322 INFO L175 Difference]: Start difference. First operand has 130 places, 124 transitions, 298 flow. Second operand 3 states and 357 transitions. [2022-10-17 10:14:10,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 131 transitions, 376 flow [2022-10-17 10:14:10,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 131 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:14:10,330 INFO L231 Difference]: Finished difference. Result has 131 places, 122 transitions, 287 flow [2022-10-17 10:14:10,331 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=131, PETRI_TRANSITIONS=122} [2022-10-17 10:14:10,332 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, -1 predicate places. [2022-10-17 10:14:10,332 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 122 transitions, 287 flow [2022-10-17 10:14:10,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:10,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:10,333 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:10,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-17 10:14:10,334 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 10:14:10,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:10,334 INFO L85 PathProgramCache]: Analyzing trace with hash -343503644, now seen corresponding path program 1 times [2022-10-17 10:14:10,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:10,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750812852] [2022-10-17 10:14:10,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:10,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:10,390 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:14:10,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:10,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750812852] [2022-10-17 10:14:10,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750812852] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:10,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:10,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:14:10,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269111939] [2022-10-17 10:14:10,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:10,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:14:10,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:10,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:14:10,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:14:10,394 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-10-17 10:14:10,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 122 transitions, 287 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:10,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:10,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-10-17 10:14:10,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:10,987 INFO L130 PetriNetUnfolder]: 1206/3596 cut-off events. [2022-10-17 10:14:10,987 INFO L131 PetriNetUnfolder]: For 493/493 co-relation queries the response was YES. [2022-10-17 10:14:11,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5972 conditions, 3596 events. 1206/3596 cut-off events. For 493/493 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 32175 event pairs, 729 based on Foata normal form. 0/3008 useless extension candidates. Maximal degree in co-relation 4576. Up to 1098 conditions per place. [2022-10-17 10:14:11,037 INFO L137 encePairwiseOnDemand]: 138/140 looper letters, 26 selfloop transitions, 1 changer transitions 0/131 dead transitions. [2022-10-17 10:14:11,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 131 transitions, 367 flow [2022-10-17 10:14:11,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:14:11,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:14:11,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2022-10-17 10:14:11,039 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8738095238095238 [2022-10-17 10:14:11,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2022-10-17 10:14:11,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2022-10-17 10:14:11,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:11,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2022-10-17 10:14:11,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:11,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:11,043 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:11,043 INFO L175 Difference]: Start difference. First operand has 131 places, 122 transitions, 287 flow. Second operand 3 states and 367 transitions. [2022-10-17 10:14:11,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 131 transitions, 367 flow [2022-10-17 10:14:11,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 131 transitions, 364 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-10-17 10:14:11,048 INFO L231 Difference]: Finished difference. Result has 133 places, 121 transitions, 285 flow [2022-10-17 10:14:11,049 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=133, PETRI_TRANSITIONS=121} [2022-10-17 10:14:11,049 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, 1 predicate places. [2022-10-17 10:14:11,049 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 121 transitions, 285 flow [2022-10-17 10:14:11,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:11,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:11,050 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:11,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-17 10:14:11,050 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 10:14:11,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:11,051 INFO L85 PathProgramCache]: Analyzing trace with hash -344455933, now seen corresponding path program 1 times [2022-10-17 10:14:11,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:11,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317496065] [2022-10-17 10:14:11,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:11,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:11,082 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:14:11,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:11,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317496065] [2022-10-17 10:14:11,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317496065] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:11,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:11,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:14:11,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471889860] [2022-10-17 10:14:11,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:11,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:14:11,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:11,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:14:11,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:14:11,085 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-10-17 10:14:11,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 121 transitions, 285 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:11,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:11,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-10-17 10:14:11,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:11,620 INFO L130 PetriNetUnfolder]: 1095/3329 cut-off events. [2022-10-17 10:14:11,621 INFO L131 PetriNetUnfolder]: For 601/601 co-relation queries the response was YES. [2022-10-17 10:14:11,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5495 conditions, 3329 events. 1095/3329 cut-off events. For 601/601 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 29262 event pairs, 618 based on Foata normal form. 52/2894 useless extension candidates. Maximal degree in co-relation 3854. Up to 935 conditions per place. [2022-10-17 10:14:11,676 INFO L137 encePairwiseOnDemand]: 138/140 looper letters, 25 selfloop transitions, 1 changer transitions 0/128 dead transitions. [2022-10-17 10:14:11,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 128 transitions, 359 flow [2022-10-17 10:14:11,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:14:11,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:14:11,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2022-10-17 10:14:11,679 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8714285714285714 [2022-10-17 10:14:11,680 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2022-10-17 10:14:11,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2022-10-17 10:14:11,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:11,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2022-10-17 10:14:11,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:11,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:11,684 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:11,684 INFO L175 Difference]: Start difference. First operand has 133 places, 121 transitions, 285 flow. Second operand 3 states and 366 transitions. [2022-10-17 10:14:11,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 128 transitions, 359 flow [2022-10-17 10:14:11,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 128 transitions, 355 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-10-17 10:14:11,693 INFO L231 Difference]: Finished difference. Result has 132 places, 119 transitions, 280 flow [2022-10-17 10:14:11,693 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=132, PETRI_TRANSITIONS=119} [2022-10-17 10:14:11,694 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, 0 predicate places. [2022-10-17 10:14:11,694 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 119 transitions, 280 flow [2022-10-17 10:14:11,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:11,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:11,695 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:11,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-17 10:14:11,696 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 10:14:11,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:11,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1821018244, now seen corresponding path program 1 times [2022-10-17 10:14:11,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:11,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706406616] [2022-10-17 10:14:11,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:11,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:14:11,714 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:14:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:14:11,748 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:14:11,750 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:14:11,751 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-10-17 10:14:11,751 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-10-17 10:14:11,751 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-10-17 10:14:11,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-10-17 10:14:11,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-10-17 10:14:11,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-10-17 10:14:11,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-10-17 10:14:11,752 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:11,753 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 10:14:11,754 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-10-17 10:14:11,798 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:14:11,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 168 transitions, 381 flow [2022-10-17 10:14:11,838 INFO L130 PetriNetUnfolder]: 26/231 cut-off events. [2022-10-17 10:14:11,838 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-10-17 10:14:11,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 231 events. 26/231 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 622 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 203. Up to 12 conditions per place. [2022-10-17 10:14:11,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 168 transitions, 381 flow [2022-10-17 10:14:11,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 168 transitions, 381 flow [2022-10-17 10:14:11,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:14:11,854 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;@29f83d62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:14:11,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-10-17 10:14:11,863 INFO L130 PetriNetUnfolder]: 7/90 cut-off events. [2022-10-17 10:14:11,863 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-10-17 10:14:11,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:11,863 INFO L208 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] [2022-10-17 10:14:11,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 10:14:11,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:11,864 INFO L85 PathProgramCache]: Analyzing trace with hash 47725525, now seen corresponding path program 1 times [2022-10-17 10:14:11,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:11,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110596711] [2022-10-17 10:14:11,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:11,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:11,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:11,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:11,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110596711] [2022-10-17 10:14:11,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110596711] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:11,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:11,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:14:11,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469518198] [2022-10-17 10:14:11,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:11,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:14:11,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:11,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:14:11,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:14:11,903 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-10-17 10:14:11,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 168 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:11,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:11,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-10-17 10:14:11,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:13,686 INFO L130 PetriNetUnfolder]: 3553/11127 cut-off events. [2022-10-17 10:14:13,686 INFO L131 PetriNetUnfolder]: For 6185/6185 co-relation queries the response was YES. [2022-10-17 10:14:13,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17910 conditions, 11127 events. 3553/11127 cut-off events. For 6185/6185 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 119621 event pairs, 1824 based on Foata normal form. 2536/12221 useless extension candidates. Maximal degree in co-relation 4767. Up to 2551 conditions per place. [2022-10-17 10:14:13,861 INFO L137 encePairwiseOnDemand]: 158/168 looper letters, 32 selfloop transitions, 2 changer transitions 0/165 dead transitions. [2022-10-17 10:14:13,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 165 transitions, 475 flow [2022-10-17 10:14:14,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:14:14,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:14:14,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2022-10-17 10:14:14,008 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9067460317460317 [2022-10-17 10:14:14,008 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2022-10-17 10:14:14,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2022-10-17 10:14:14,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:14,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2022-10-17 10:14:14,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:14,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:14,012 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:14,012 INFO L175 Difference]: Start difference. First operand has 158 places, 168 transitions, 381 flow. Second operand 3 states and 457 transitions. [2022-10-17 10:14:14,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 165 transitions, 475 flow [2022-10-17 10:14:14,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 165 transitions, 443 flow, removed 16 selfloop flow, removed 0 redundant places. [2022-10-17 10:14:14,022 INFO L231 Difference]: Finished difference. Result has 151 places, 152 transitions, 341 flow [2022-10-17 10:14:14,023 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=151, PETRI_TRANSITIONS=152} [2022-10-17 10:14:14,024 INFO L287 CegarLoopForPetriNet]: 158 programPoint places, -7 predicate places. [2022-10-17 10:14:14,024 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 152 transitions, 341 flow [2022-10-17 10:14:14,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:14,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:14,025 INFO L208 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] [2022-10-17 10:14:14,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-10-17 10:14:14,025 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 10:14:14,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:14,026 INFO L85 PathProgramCache]: Analyzing trace with hash 47724502, now seen corresponding path program 1 times [2022-10-17 10:14:14,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:14,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617331811] [2022-10-17 10:14:14,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:14,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:14,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:14,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617331811] [2022-10-17 10:14:14,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617331811] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:14,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:14,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:14:14,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889862572] [2022-10-17 10:14:14,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:14,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:14:14,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:14,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:14:14,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:14:14,085 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-10-17 10:14:14,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 152 transitions, 341 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:14,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:14,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-10-17 10:14:14,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:16,804 INFO L130 PetriNetUnfolder]: 5611/17681 cut-off events. [2022-10-17 10:14:16,804 INFO L131 PetriNetUnfolder]: For 1815/1815 co-relation queries the response was YES. [2022-10-17 10:14:17,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26264 conditions, 17681 events. 5611/17681 cut-off events. For 1815/1815 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 206764 event pairs, 3120 based on Foata normal form. 0/15577 useless extension candidates. Maximal degree in co-relation 26107. Up to 4331 conditions per place. [2022-10-17 10:14:17,179 INFO L137 encePairwiseOnDemand]: 164/168 looper letters, 36 selfloop transitions, 3 changer transitions 0/166 dead transitions. [2022-10-17 10:14:17,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 166 transitions, 467 flow [2022-10-17 10:14:17,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:14:17,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:14:17,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2022-10-17 10:14:17,181 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8591269841269841 [2022-10-17 10:14:17,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2022-10-17 10:14:17,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2022-10-17 10:14:17,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:17,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2022-10-17 10:14:17,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:17,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:17,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:17,185 INFO L175 Difference]: Start difference. First operand has 151 places, 152 transitions, 341 flow. Second operand 3 states and 433 transitions. [2022-10-17 10:14:17,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 166 transitions, 467 flow [2022-10-17 10:14:17,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 166 transitions, 465 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:14:17,196 INFO L231 Difference]: Finished difference. Result has 154 places, 153 transitions, 357 flow [2022-10-17 10:14:17,197 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=357, PETRI_PLACES=154, PETRI_TRANSITIONS=153} [2022-10-17 10:14:17,198 INFO L287 CegarLoopForPetriNet]: 158 programPoint places, -4 predicate places. [2022-10-17 10:14:17,198 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 153 transitions, 357 flow [2022-10-17 10:14:17,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:17,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:17,198 INFO L208 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] [2022-10-17 10:14:17,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-10-17 10:14:17,199 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 10:14:17,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:17,199 INFO L85 PathProgramCache]: Analyzing trace with hash 48678837, now seen corresponding path program 1 times [2022-10-17 10:14:17,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:17,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510292946] [2022-10-17 10:14:17,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:17,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:17,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:17,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:17,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510292946] [2022-10-17 10:14:17,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510292946] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:17,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:17,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:14:17,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602677887] [2022-10-17 10:14:17,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:17,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:14:17,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:17,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:14:17,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:14:17,230 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-10-17 10:14:17,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 153 transitions, 357 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:17,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:17,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-10-17 10:14:17,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:19,618 INFO L130 PetriNetUnfolder]: 5058/16140 cut-off events. [2022-10-17 10:14:19,618 INFO L131 PetriNetUnfolder]: For 2866/2866 co-relation queries the response was YES. [2022-10-17 10:14:19,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24496 conditions, 16140 events. 5058/16140 cut-off events. For 2866/2866 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 186883 event pairs, 2796 based on Foata normal form. 242/14602 useless extension candidates. Maximal degree in co-relation 24344. Up to 3886 conditions per place. [2022-10-17 10:14:19,851 INFO L137 encePairwiseOnDemand]: 165/168 looper letters, 36 selfloop transitions, 1 changer transitions 0/164 dead transitions. [2022-10-17 10:14:19,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 164 transitions, 465 flow [2022-10-17 10:14:19,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:14:19,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:14:19,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2022-10-17 10:14:19,853 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-10-17 10:14:19,854 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2022-10-17 10:14:19,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2022-10-17 10:14:19,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:19,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2022-10-17 10:14:19,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:19,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:19,857 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:19,857 INFO L175 Difference]: Start difference. First operand has 154 places, 153 transitions, 357 flow. Second operand 3 states and 432 transitions. [2022-10-17 10:14:19,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 164 transitions, 465 flow [2022-10-17 10:14:19,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 164 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:14:19,867 INFO L231 Difference]: Finished difference. Result has 155 places, 151 transitions, 346 flow [2022-10-17 10:14:19,868 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=155, PETRI_TRANSITIONS=151} [2022-10-17 10:14:19,868 INFO L287 CegarLoopForPetriNet]: 158 programPoint places, -3 predicate places. [2022-10-17 10:14:19,868 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 151 transitions, 346 flow [2022-10-17 10:14:19,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:19,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:19,869 INFO L208 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] [2022-10-17 10:14:19,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-10-17 10:14:19,870 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 10:14:19,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:19,870 INFO L85 PathProgramCache]: Analyzing trace with hash 48677814, now seen corresponding path program 1 times [2022-10-17 10:14:19,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:19,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987837275] [2022-10-17 10:14:19,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:19,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:19,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:19,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987837275] [2022-10-17 10:14:19,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987837275] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:19,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:19,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:14:19,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776118853] [2022-10-17 10:14:19,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:19,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:14:19,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:19,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:14:19,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:14:19,902 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-10-17 10:14:19,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 151 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:19,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:19,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-10-17 10:14:19,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:21,685 INFO L130 PetriNetUnfolder]: 3432/10702 cut-off events. [2022-10-17 10:14:21,685 INFO L131 PetriNetUnfolder]: For 1310/1310 co-relation queries the response was YES. [2022-10-17 10:14:21,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16387 conditions, 10702 events. 3432/10702 cut-off events. For 1310/1310 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 114747 event pairs, 1824 based on Foata normal form. 0/9546 useless extension candidates. Maximal degree in co-relation 14046. Up to 2551 conditions per place. [2022-10-17 10:14:21,848 INFO L137 encePairwiseOnDemand]: 166/168 looper letters, 32 selfloop transitions, 1 changer transitions 0/161 dead transitions. [2022-10-17 10:14:21,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 161 transitions, 447 flow [2022-10-17 10:14:21,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:14:21,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:14:21,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2022-10-17 10:14:21,851 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.876984126984127 [2022-10-17 10:14:21,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2022-10-17 10:14:21,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2022-10-17 10:14:21,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:21,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2022-10-17 10:14:21,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:21,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:21,857 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:21,857 INFO L175 Difference]: Start difference. First operand has 155 places, 151 transitions, 346 flow. Second operand 3 states and 442 transitions. [2022-10-17 10:14:21,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 161 transitions, 447 flow [2022-10-17 10:14:21,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 161 transitions, 442 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-10-17 10:14:21,864 INFO L231 Difference]: Finished difference. Result has 152 places, 148 transitions, 332 flow [2022-10-17 10:14:21,865 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=332, PETRI_PLACES=152, PETRI_TRANSITIONS=148} [2022-10-17 10:14:21,866 INFO L287 CegarLoopForPetriNet]: 158 programPoint places, -6 predicate places. [2022-10-17 10:14:21,866 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 148 transitions, 332 flow [2022-10-17 10:14:21,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:21,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:21,867 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:21,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-10-17 10:14:21,868 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 10:14:21,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:21,868 INFO L85 PathProgramCache]: Analyzing trace with hash -985738109, now seen corresponding path program 1 times [2022-10-17 10:14:21,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:21,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252632910] [2022-10-17 10:14:21,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:21,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:21,903 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:14:21,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:21,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252632910] [2022-10-17 10:14:21,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252632910] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:21,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:21,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:14:21,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101161909] [2022-10-17 10:14:21,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:21,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:14:21,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:21,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:14:21,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:14:21,906 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-10-17 10:14:21,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 148 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:21,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:21,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-10-17 10:14:21,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:25,047 INFO L130 PetriNetUnfolder]: 7568/21994 cut-off events. [2022-10-17 10:14:25,047 INFO L131 PetriNetUnfolder]: For 2197/2197 co-relation queries the response was YES. [2022-10-17 10:14:25,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33148 conditions, 21994 events. 7568/21994 cut-off events. For 2197/2197 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 260000 event pairs, 4284 based on Foata normal form. 0/18682 useless extension candidates. Maximal degree in co-relation 24581. Up to 5889 conditions per place. [2022-10-17 10:14:25,353 INFO L137 encePairwiseOnDemand]: 163/168 looper letters, 36 selfloop transitions, 3 changer transitions 0/162 dead transitions. [2022-10-17 10:14:25,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 162 transitions, 453 flow [2022-10-17 10:14:25,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:14:25,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:14:25,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2022-10-17 10:14:25,357 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8611111111111112 [2022-10-17 10:14:25,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2022-10-17 10:14:25,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2022-10-17 10:14:25,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:25,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2022-10-17 10:14:25,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:25,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:25,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:25,361 INFO L175 Difference]: Start difference. First operand has 152 places, 148 transitions, 332 flow. Second operand 3 states and 434 transitions. [2022-10-17 10:14:25,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 162 transitions, 453 flow [2022-10-17 10:14:25,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 162 transitions, 452 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:14:25,366 INFO L231 Difference]: Finished difference. Result has 155 places, 150 transitions, 355 flow [2022-10-17 10:14:25,367 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=355, PETRI_PLACES=155, PETRI_TRANSITIONS=150} [2022-10-17 10:14:25,367 INFO L287 CegarLoopForPetriNet]: 158 programPoint places, -3 predicate places. [2022-10-17 10:14:25,368 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 150 transitions, 355 flow [2022-10-17 10:14:25,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:25,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:25,368 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:25,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-10-17 10:14:25,369 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 10:14:25,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:25,369 INFO L85 PathProgramCache]: Analyzing trace with hash -985739132, now seen corresponding path program 1 times [2022-10-17 10:14:25,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:25,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850406270] [2022-10-17 10:14:25,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:25,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:25,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:14:25,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:25,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850406270] [2022-10-17 10:14:25,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850406270] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:25,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:25,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:14:25,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881295710] [2022-10-17 10:14:25,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:25,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:14:25,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:25,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:14:25,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:14:25,403 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-10-17 10:14:25,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 150 transitions, 355 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:25,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:25,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-10-17 10:14:25,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:28,419 INFO L130 PetriNetUnfolder]: 5568/16390 cut-off events. [2022-10-17 10:14:28,419 INFO L131 PetriNetUnfolder]: For 1945/1945 co-relation queries the response was YES. [2022-10-17 10:14:28,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25629 conditions, 16390 events. 5568/16390 cut-off events. For 1945/1945 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 185357 event pairs, 3396 based on Foata normal form. 0/14052 useless extension candidates. Maximal degree in co-relation 17867. Up to 4681 conditions per place. [2022-10-17 10:14:28,652 INFO L137 encePairwiseOnDemand]: 166/168 looper letters, 32 selfloop transitions, 1 changer transitions 0/162 dead transitions. [2022-10-17 10:14:28,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 162 transitions, 458 flow [2022-10-17 10:14:28,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:14:28,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:14:28,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2022-10-17 10:14:28,655 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.876984126984127 [2022-10-17 10:14:28,655 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2022-10-17 10:14:28,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2022-10-17 10:14:28,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:28,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2022-10-17 10:14:28,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:28,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:28,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:28,659 INFO L175 Difference]: Start difference. First operand has 155 places, 150 transitions, 355 flow. Second operand 3 states and 442 transitions. [2022-10-17 10:14:28,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 162 transitions, 458 flow [2022-10-17 10:14:28,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 162 transitions, 453 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-10-17 10:14:28,688 INFO L231 Difference]: Finished difference. Result has 157 places, 149 transitions, 351 flow [2022-10-17 10:14:28,689 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=351, PETRI_PLACES=157, PETRI_TRANSITIONS=149} [2022-10-17 10:14:28,689 INFO L287 CegarLoopForPetriNet]: 158 programPoint places, -1 predicate places. [2022-10-17 10:14:28,690 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 149 transitions, 351 flow [2022-10-17 10:14:28,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:28,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:28,690 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:28,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-10-17 10:14:28,691 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 10:14:28,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:28,693 INFO L85 PathProgramCache]: Analyzing trace with hash -986691421, now seen corresponding path program 1 times [2022-10-17 10:14:28,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:28,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541123728] [2022-10-17 10:14:28,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:28,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:28,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:14:28,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:28,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541123728] [2022-10-17 10:14:28,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541123728] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:28,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:28,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:14:28,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814058399] [2022-10-17 10:14:28,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:28,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:14:28,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:28,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:14:28,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:14:28,725 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-10-17 10:14:28,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 149 transitions, 351 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:28,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:28,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-10-17 10:14:28,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:30,589 INFO L130 PetriNetUnfolder]: 4536/13446 cut-off events. [2022-10-17 10:14:30,590 INFO L131 PetriNetUnfolder]: For 1897/1897 co-relation queries the response was YES. [2022-10-17 10:14:30,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21158 conditions, 13446 events. 4536/13446 cut-off events. For 1897/1897 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 146988 event pairs, 2508 based on Foata normal form. 160/11840 useless extension candidates. Maximal degree in co-relation 13831. Up to 3473 conditions per place. [2022-10-17 10:14:31,043 INFO L137 encePairwiseOnDemand]: 166/168 looper letters, 31 selfloop transitions, 1 changer transitions 0/159 dead transitions. [2022-10-17 10:14:31,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 159 transitions, 445 flow [2022-10-17 10:14:31,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:14:31,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:14:31,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2022-10-17 10:14:31,045 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-10-17 10:14:31,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2022-10-17 10:14:31,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2022-10-17 10:14:31,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:31,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2022-10-17 10:14:31,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:31,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:31,049 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:31,049 INFO L175 Difference]: Start difference. First operand has 157 places, 149 transitions, 351 flow. Second operand 3 states and 441 transitions. [2022-10-17 10:14:31,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 159 transitions, 445 flow [2022-10-17 10:14:31,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 159 transitions, 438 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-10-17 10:14:31,073 INFO L231 Difference]: Finished difference. Result has 157 places, 147 transitions, 340 flow [2022-10-17 10:14:31,073 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=157, PETRI_TRANSITIONS=147} [2022-10-17 10:14:31,074 INFO L287 CegarLoopForPetriNet]: 158 programPoint places, -1 predicate places. [2022-10-17 10:14:31,074 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 147 transitions, 340 flow [2022-10-17 10:14:31,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:31,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:31,075 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:31,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-10-17 10:14:31,075 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 10:14:31,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:31,075 INFO L85 PathProgramCache]: Analyzing trace with hash -986692444, now seen corresponding path program 1 times [2022-10-17 10:14:31,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:31,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608440524] [2022-10-17 10:14:31,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:31,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:14:31,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:31,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608440524] [2022-10-17 10:14:31,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608440524] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:31,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:31,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:14:31,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550249815] [2022-10-17 10:14:31,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:31,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:14:31,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:31,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:14:31,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:14:31,110 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-10-17 10:14:31,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 147 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:31,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:31,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-10-17 10:14:31,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand