./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 753355d7d8c08568df49ed9a7977f84d185e0dbf04984bcb7908b11aa84a04b9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:54:39,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:54:39,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:54:39,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:54:39,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:54:39,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:54:39,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:54:40,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:54:40,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:54:40,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:54:40,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:54:40,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:54:40,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:54:40,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:54:40,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:54:40,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:54:40,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:54:40,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:54:40,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:54:40,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:54:40,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:54:40,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:54:40,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:54:40,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:54:40,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:54:40,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:54:40,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:54:40,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:54:40,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:54:40,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:54:40,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:54:40,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:54:40,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:54:40,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:54:40,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:54:40,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:54:40,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:54:40,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:54:40,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:54:40,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:54:40,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:54:40,082 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:54:40,127 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:54:40,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:54:40,128 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:54:40,128 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:54:40,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:54:40,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:54:40,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:54:40,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:54:40,131 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:54:40,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:54:40,133 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:54:40,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:54:40,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:54:40,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:54:40,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:54:40,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:54:40,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:54:40,135 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:54:40,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:54:40,135 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:54:40,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:54:40,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:54:40,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:54:40,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:54:40,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:54:40,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:54:40,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:54:40,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:54:40,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:54:40,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:54:40,139 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:54:40,139 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:54:40,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:54:40,140 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_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 753355d7d8c08568df49ed9a7977f84d185e0dbf04984bcb7908b11aa84a04b9 [2022-11-20 10:54:40,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:54:40,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:54:40,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:54:40,553 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:54:40,553 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:54:40,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2022-11-20 10:54:43,939 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:54:44,217 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:54:44,218 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2022-11-20 10:54:44,227 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN/data/d66662961/905c1a82bd0c46b2ba7ae68271b212b8/FLAG584b1faa9 [2022-11-20 10:54:44,245 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN/data/d66662961/905c1a82bd0c46b2ba7ae68271b212b8 [2022-11-20 10:54:44,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:54:44,250 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:54:44,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:54:44,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:54:44,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:54:44,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:54:44" (1/1) ... [2022-11-20 10:54:44,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e2b3158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:44, skipping insertion in model container [2022-11-20 10:54:44,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:54:44" (1/1) ... [2022-11-20 10:54:44,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:54:44,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:54:44,613 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c[2625,2638] [2022-11-20 10:54:44,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:54:44,653 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:54:44,684 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c[2625,2638] [2022-11-20 10:54:44,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:54:44,702 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:54:44,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:44 WrapperNode [2022-11-20 10:54:44,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:54:44,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:54:44,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:54:44,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:54:44,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:44" (1/1) ... [2022-11-20 10:54:44,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:44" (1/1) ... [2022-11-20 10:54:44,772 INFO L138 Inliner]: procedures = 22, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 125 [2022-11-20 10:54:44,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:54:44,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:54:44,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:54:44,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:54:44,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:44" (1/1) ... [2022-11-20 10:54:44,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:44" (1/1) ... [2022-11-20 10:54:44,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:44" (1/1) ... [2022-11-20 10:54:44,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:44" (1/1) ... [2022-11-20 10:54:44,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:44" (1/1) ... [2022-11-20 10:54:44,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:44" (1/1) ... [2022-11-20 10:54:44,801 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:44" (1/1) ... [2022-11-20 10:54:44,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:44" (1/1) ... [2022-11-20 10:54:44,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:54:44,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:54:44,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:54:44,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:54:44,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:44" (1/1) ... [2022-11-20 10:54:44,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:54:44,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:44,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:54:44,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:54:44,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:54:44,912 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:54:44,912 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:54:44,913 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:54:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:54:44,913 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 10:54:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 10:54:44,915 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-20 10:54:44,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-20 10:54:44,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:54:44,918 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-20 10:54:44,918 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-20 10:54:44,918 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-20 10:54:44,918 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-20 10:54:44,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:54:44,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:54:44,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:54:44,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:54:44,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:54:44,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:54:44,922 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:54:45,097 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:54:45,102 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:54:45,567 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:54:45,579 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:54:45,579 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 10:54:45,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:54:45 BoogieIcfgContainer [2022-11-20 10:54:45,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:54:45,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:54:45,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:54:45,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:54:45,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:54:44" (1/3) ... [2022-11-20 10:54:45,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@889ecde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:54:45, skipping insertion in model container [2022-11-20 10:54:45,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:44" (2/3) ... [2022-11-20 10:54:45,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@889ecde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:54:45, skipping insertion in model container [2022-11-20 10:54:45,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:54:45" (3/3) ... [2022-11-20 10:54:45,592 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2022-11-20 10:54:45,602 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:54:45,613 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:54:45,614 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:54:45,614 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:54:45,795 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-11-20 10:54:45,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 169 transitions, 386 flow [2022-11-20 10:54:45,958 INFO L130 PetriNetUnfolder]: 14/163 cut-off events. [2022-11-20 10:54:45,958 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 10:54:45,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 163 events. 14/163 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2022-11-20 10:54:45,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 169 transitions, 386 flow [2022-11-20 10:54:45,984 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 146 transitions, 328 flow [2022-11-20 10:54:46,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:54:46,024 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;@26fe47c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:54:46,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-20 10:54:46,122 INFO L130 PetriNetUnfolder]: 14/145 cut-off events. [2022-11-20 10:54:46,123 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 10:54:46,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:46,124 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:46,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:54:46,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:46,132 INFO L85 PathProgramCache]: Analyzing trace with hash -316540834, now seen corresponding path program 1 times [2022-11-20 10:54:46,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:46,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500606890] [2022-11-20 10:54:46,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:46,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:46,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:46,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:46,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500606890] [2022-11-20 10:54:46,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500606890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:46,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:46,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:54:46,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892397682] [2022-11-20 10:54:46,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:46,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:54:46,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:46,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:54:46,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:54:46,756 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 169 [2022-11-20 10:54:46,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 146 transitions, 328 flow. Second operand has 2 states, 2 states have (on average 157.0) internal successors, (314), 2 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:46,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:46,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 169 [2022-11-20 10:54:46,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:46,857 INFO L130 PetriNetUnfolder]: 6/138 cut-off events. [2022-11-20 10:54:46,857 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-20 10:54:46,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 138 events. 6/138 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 38/168 useless extension candidates. Maximal degree in co-relation 119. Up to 13 conditions per place. [2022-11-20 10:54:46,861 INFO L137 encePairwiseOnDemand]: 161/169 looper letters, 12 selfloop transitions, 0 changer transitions 2/138 dead transitions. [2022-11-20 10:54:46,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 138 transitions, 336 flow [2022-11-20 10:54:46,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:54:46,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 10:54:46,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 316 transitions. [2022-11-20 10:54:46,878 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9349112426035503 [2022-11-20 10:54:46,879 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 316 transitions. [2022-11-20 10:54:46,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 316 transitions. [2022-11-20 10:54:46,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:46,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 316 transitions. [2022-11-20 10:54:46,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 158.0) internal successors, (316), 2 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:46,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:46,894 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:46,900 INFO L175 Difference]: Start difference. First operand has 151 places, 146 transitions, 328 flow. Second operand 2 states and 316 transitions. [2022-11-20 10:54:46,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 138 transitions, 336 flow [2022-11-20 10:54:46,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 138 transitions, 312 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-20 10:54:46,916 INFO L231 Difference]: Finished difference. Result has 140 places, 136 transitions, 284 flow [2022-11-20 10:54:46,918 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=284, PETRI_PLACES=140, PETRI_TRANSITIONS=136} [2022-11-20 10:54:46,926 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, -11 predicate places. [2022-11-20 10:54:46,927 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 136 transitions, 284 flow [2022-11-20 10:54:46,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 157.0) internal successors, (314), 2 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:46,928 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:46,928 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:46,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:54:46,929 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:54:46,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:46,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1921476920, now seen corresponding path program 1 times [2022-11-20 10:54:46,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:46,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839299836] [2022-11-20 10:54:46,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:46,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:48,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:48,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839299836] [2022-11-20 10:54:48,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839299836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:48,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:48,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:54:48,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071052602] [2022-11-20 10:54:48,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:48,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:54:48,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:48,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:54:48,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:54:48,951 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 169 [2022-11-20 10:54:48,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 136 transitions, 284 flow. Second operand has 7 states, 7 states have (on average 113.42857142857143) internal successors, (794), 7 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:48,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:48,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 169 [2022-11-20 10:54:48,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:53,827 INFO L130 PetriNetUnfolder]: 13855/19772 cut-off events. [2022-11-20 10:54:53,827 INFO L131 PetriNetUnfolder]: For 728/910 co-relation queries the response was YES. [2022-11-20 10:54:53,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37292 conditions, 19772 events. 13855/19772 cut-off events. For 728/910 co-relation queries the response was YES. Maximal size of possible extension queue 997. Compared 113622 event pairs, 8000 based on Foata normal form. 1/13683 useless extension candidates. Maximal degree in co-relation 37289. Up to 10952 conditions per place. [2022-11-20 10:54:54,061 INFO L137 encePairwiseOnDemand]: 157/169 looper letters, 69 selfloop transitions, 9 changer transitions 4/168 dead transitions. [2022-11-20 10:54:54,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 168 transitions, 523 flow [2022-11-20 10:54:54,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:54:54,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:54:54,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 839 transitions. [2022-11-20 10:54:54,071 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7092138630600169 [2022-11-20 10:54:54,071 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 839 transitions. [2022-11-20 10:54:54,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 839 transitions. [2022-11-20 10:54:54,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:54,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 839 transitions. [2022-11-20 10:54:54,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 119.85714285714286) internal successors, (839), 7 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:54,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:54,084 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:54,085 INFO L175 Difference]: Start difference. First operand has 140 places, 136 transitions, 284 flow. Second operand 7 states and 839 transitions. [2022-11-20 10:54:54,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 168 transitions, 523 flow [2022-11-20 10:54:54,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 168 transitions, 523 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:54:54,095 INFO L231 Difference]: Finished difference. Result has 147 places, 142 transitions, 339 flow [2022-11-20 10:54:54,096 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=339, PETRI_PLACES=147, PETRI_TRANSITIONS=142} [2022-11-20 10:54:54,097 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, -4 predicate places. [2022-11-20 10:54:54,097 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 142 transitions, 339 flow [2022-11-20 10:54:54,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.42857142857143) internal successors, (794), 7 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:54,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:54,099 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:54,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:54:54,100 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:54:54,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:54,102 INFO L85 PathProgramCache]: Analyzing trace with hash 549633034, now seen corresponding path program 1 times [2022-11-20 10:54:54,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:54,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604824389] [2022-11-20 10:54:54,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:54,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:55,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:55,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:55,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604824389] [2022-11-20 10:54:55,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604824389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:55,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:55,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:54:55,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973347277] [2022-11-20 10:54:55,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:55,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:54:55,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:55,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:54:55,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:54:55,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 169 [2022-11-20 10:54:55,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 142 transitions, 339 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:55,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:55,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 169 [2022-11-20 10:54:55,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:59,010 INFO L130 PetriNetUnfolder]: 13612/19670 cut-off events. [2022-11-20 10:54:59,011 INFO L131 PetriNetUnfolder]: For 4292/4486 co-relation queries the response was YES. [2022-11-20 10:54:59,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44612 conditions, 19670 events. 13612/19670 cut-off events. For 4292/4486 co-relation queries the response was YES. Maximal size of possible extension queue 1077. Compared 118709 event pairs, 2546 based on Foata normal form. 0/14157 useless extension candidates. Maximal degree in co-relation 44605. Up to 10954 conditions per place. [2022-11-20 10:54:59,306 INFO L137 encePairwiseOnDemand]: 156/169 looper letters, 84 selfloop transitions, 17 changer transitions 1/186 dead transitions. [2022-11-20 10:54:59,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 186 transitions, 665 flow [2022-11-20 10:54:59,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:54:59,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:54:59,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 740 transitions. [2022-11-20 10:54:59,312 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7297830374753451 [2022-11-20 10:54:59,312 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 740 transitions. [2022-11-20 10:54:59,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 740 transitions. [2022-11-20 10:54:59,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:59,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 740 transitions. [2022-11-20 10:54:59,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.33333333333333) internal successors, (740), 6 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:59,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:59,320 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:59,321 INFO L175 Difference]: Start difference. First operand has 147 places, 142 transitions, 339 flow. Second operand 6 states and 740 transitions. [2022-11-20 10:54:59,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 186 transitions, 665 flow [2022-11-20 10:54:59,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 186 transitions, 644 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-20 10:54:59,339 INFO L231 Difference]: Finished difference. Result has 147 places, 150 transitions, 411 flow [2022-11-20 10:54:59,340 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=411, PETRI_PLACES=147, PETRI_TRANSITIONS=150} [2022-11-20 10:54:59,343 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, -4 predicate places. [2022-11-20 10:54:59,343 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 150 transitions, 411 flow [2022-11-20 10:54:59,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:59,344 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:59,345 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:59,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:54:59,345 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:54:59,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:59,347 INFO L85 PathProgramCache]: Analyzing trace with hash -211985084, now seen corresponding path program 2 times [2022-11-20 10:54:59,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:59,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747314697] [2022-11-20 10:54:59,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:59,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:00,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:00,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:00,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747314697] [2022-11-20 10:55:00,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747314697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:00,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:00,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:55:00,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766812694] [2022-11-20 10:55:00,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:00,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:55:00,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:00,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:55:00,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:55:00,485 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 169 [2022-11-20 10:55:00,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 150 transitions, 411 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:00,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:00,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 169 [2022-11-20 10:55:00,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:03,935 INFO L130 PetriNetUnfolder]: 12437/18292 cut-off events. [2022-11-20 10:55:03,935 INFO L131 PetriNetUnfolder]: For 9786/9918 co-relation queries the response was YES. [2022-11-20 10:55:03,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45856 conditions, 18292 events. 12437/18292 cut-off events. For 9786/9918 co-relation queries the response was YES. Maximal size of possible extension queue 926. Compared 109119 event pairs, 6027 based on Foata normal form. 242/14377 useless extension candidates. Maximal degree in co-relation 45849. Up to 10427 conditions per place. [2022-11-20 10:55:04,103 INFO L137 encePairwiseOnDemand]: 156/169 looper letters, 85 selfloop transitions, 19 changer transitions 2/190 dead transitions. [2022-11-20 10:55:04,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 190 transitions, 741 flow [2022-11-20 10:55:04,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:55:04,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:55:04,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 738 transitions. [2022-11-20 10:55:04,111 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.727810650887574 [2022-11-20 10:55:04,111 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 738 transitions. [2022-11-20 10:55:04,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 738 transitions. [2022-11-20 10:55:04,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:04,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 738 transitions. [2022-11-20 10:55:04,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:04,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:04,121 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:04,122 INFO L175 Difference]: Start difference. First operand has 147 places, 150 transitions, 411 flow. Second operand 6 states and 738 transitions. [2022-11-20 10:55:04,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 190 transitions, 741 flow [2022-11-20 10:55:04,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 190 transitions, 707 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:55:04,460 INFO L231 Difference]: Finished difference. Result has 150 places, 154 transitions, 464 flow [2022-11-20 10:55:04,460 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=464, PETRI_PLACES=150, PETRI_TRANSITIONS=154} [2022-11-20 10:55:04,462 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, -1 predicate places. [2022-11-20 10:55:04,462 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 154 transitions, 464 flow [2022-11-20 10:55:04,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:04,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:04,463 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:04,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:55:04,464 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:55:04,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:04,465 INFO L85 PathProgramCache]: Analyzing trace with hash -2025566878, now seen corresponding path program 1 times [2022-11-20 10:55:04,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:04,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915344242] [2022-11-20 10:55:04,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:04,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:05,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:05,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915344242] [2022-11-20 10:55:05,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915344242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:05,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:05,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:55:05,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032173387] [2022-11-20 10:55:05,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:05,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:55:05,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:05,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:55:05,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:55:05,140 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 169 [2022-11-20 10:55:05,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 154 transitions, 464 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:05,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:05,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 169 [2022-11-20 10:55:05,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:08,728 INFO L130 PetriNetUnfolder]: 12168/17559 cut-off events. [2022-11-20 10:55:08,728 INFO L131 PetriNetUnfolder]: For 11361/11361 co-relation queries the response was YES. [2022-11-20 10:55:08,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48900 conditions, 17559 events. 12168/17559 cut-off events. For 11361/11361 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 100914 event pairs, 5215 based on Foata normal form. 0/13774 useless extension candidates. Maximal degree in co-relation 48891. Up to 10427 conditions per place. [2022-11-20 10:55:08,893 INFO L137 encePairwiseOnDemand]: 156/169 looper letters, 91 selfloop transitions, 33 changer transitions 2/210 dead transitions. [2022-11-20 10:55:08,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 210 transitions, 976 flow [2022-11-20 10:55:08,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:55:08,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:55:08,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 740 transitions. [2022-11-20 10:55:08,897 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7297830374753451 [2022-11-20 10:55:08,897 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 740 transitions. [2022-11-20 10:55:08,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 740 transitions. [2022-11-20 10:55:08,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:08,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 740 transitions. [2022-11-20 10:55:08,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.33333333333333) internal successors, (740), 6 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:08,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:08,904 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:08,904 INFO L175 Difference]: Start difference. First operand has 150 places, 154 transitions, 464 flow. Second operand 6 states and 740 transitions. [2022-11-20 10:55:08,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 210 transitions, 976 flow [2022-11-20 10:55:09,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 210 transitions, 931 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-11-20 10:55:09,328 INFO L231 Difference]: Finished difference. Result has 154 places, 170 transitions, 650 flow [2022-11-20 10:55:09,329 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=650, PETRI_PLACES=154, PETRI_TRANSITIONS=170} [2022-11-20 10:55:09,332 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 3 predicate places. [2022-11-20 10:55:09,332 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 170 transitions, 650 flow [2022-11-20 10:55:09,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:09,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:09,333 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:09,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:55:09,334 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:55:09,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:09,335 INFO L85 PathProgramCache]: Analyzing trace with hash 303596176, now seen corresponding path program 1 times [2022-11-20 10:55:09,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:09,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697966479] [2022-11-20 10:55:09,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:09,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:10,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:10,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:10,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697966479] [2022-11-20 10:55:10,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697966479] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:55:10,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992931793] [2022-11-20 10:55:10,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:10,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:10,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:55:10,186 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:55:10,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:55:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:10,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:55:10,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:55:11,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:11,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:55:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:12,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992931793] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:55:12,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:55:12,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-11-20 10:55:12,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779632370] [2022-11-20 10:55:12,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:55:12,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 10:55:12,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:12,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 10:55:12,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:55:12,046 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 169 [2022-11-20 10:55:12,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 170 transitions, 650 flow. Second operand has 14 states, 14 states have (on average 112.07142857142857) internal successors, (1569), 14 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:12,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:12,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 169 [2022-11-20 10:55:12,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:17,948 INFO L130 PetriNetUnfolder]: 23816/34159 cut-off events. [2022-11-20 10:55:17,948 INFO L131 PetriNetUnfolder]: For 26038/26199 co-relation queries the response was YES. [2022-11-20 10:55:18,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93915 conditions, 34159 events. 23816/34159 cut-off events. For 26038/26199 co-relation queries the response was YES. Maximal size of possible extension queue 1805. Compared 216239 event pairs, 2423 based on Foata normal form. 608/30381 useless extension candidates. Maximal degree in co-relation 93904. Up to 9260 conditions per place. [2022-11-20 10:55:18,291 INFO L137 encePairwiseOnDemand]: 152/169 looper letters, 207 selfloop transitions, 48 changer transitions 2/341 dead transitions. [2022-11-20 10:55:18,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 341 transitions, 1726 flow [2022-11-20 10:55:18,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:55:18,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-20 10:55:18,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1721 transitions. [2022-11-20 10:55:18,297 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7273879966187659 [2022-11-20 10:55:18,298 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1721 transitions. [2022-11-20 10:55:18,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1721 transitions. [2022-11-20 10:55:18,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:18,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1721 transitions. [2022-11-20 10:55:18,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 122.92857142857143) internal successors, (1721), 14 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:18,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 169.0) internal successors, (2535), 15 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:18,310 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 169.0) internal successors, (2535), 15 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:18,311 INFO L175 Difference]: Start difference. First operand has 154 places, 170 transitions, 650 flow. Second operand 14 states and 1721 transitions. [2022-11-20 10:55:18,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 341 transitions, 1726 flow [2022-11-20 10:55:18,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 341 transitions, 1693 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:55:18,583 INFO L231 Difference]: Finished difference. Result has 171 places, 182 transitions, 836 flow [2022-11-20 10:55:18,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=836, PETRI_PLACES=171, PETRI_TRANSITIONS=182} [2022-11-20 10:55:18,584 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 20 predicate places. [2022-11-20 10:55:18,584 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 182 transitions, 836 flow [2022-11-20 10:55:18,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 112.07142857142857) internal successors, (1569), 14 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:18,586 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:18,586 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:18,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 10:55:18,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 10:55:18,793 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:55:18,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:18,794 INFO L85 PathProgramCache]: Analyzing trace with hash -121728838, now seen corresponding path program 2 times [2022-11-20 10:55:18,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:18,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549556653] [2022-11-20 10:55:18,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:18,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:19,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:19,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:19,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549556653] [2022-11-20 10:55:19,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549556653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:19,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:19,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:55:19,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113904297] [2022-11-20 10:55:19,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:19,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:55:19,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:19,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:55:19,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:55:19,605 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 169 [2022-11-20 10:55:19,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 182 transitions, 836 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:19,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:19,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 169 [2022-11-20 10:55:19,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:24,372 INFO L130 PetriNetUnfolder]: 22561/31764 cut-off events. [2022-11-20 10:55:24,373 INFO L131 PetriNetUnfolder]: For 49280/49458 co-relation queries the response was YES. [2022-11-20 10:55:24,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99633 conditions, 31764 events. 22561/31764 cut-off events. For 49280/49458 co-relation queries the response was YES. Maximal size of possible extension queue 1731. Compared 194043 event pairs, 4996 based on Foata normal form. 207/27697 useless extension candidates. Maximal degree in co-relation 99616. Up to 24063 conditions per place. [2022-11-20 10:55:24,642 INFO L137 encePairwiseOnDemand]: 156/169 looper letters, 105 selfloop transitions, 35 changer transitions 2/226 dead transitions. [2022-11-20 10:55:24,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 226 transitions, 1336 flow [2022-11-20 10:55:24,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:55:24,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:55:24,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 738 transitions. [2022-11-20 10:55:24,647 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.727810650887574 [2022-11-20 10:55:24,647 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 738 transitions. [2022-11-20 10:55:24,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 738 transitions. [2022-11-20 10:55:24,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:24,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 738 transitions. [2022-11-20 10:55:24,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:24,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:24,654 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:24,654 INFO L175 Difference]: Start difference. First operand has 171 places, 182 transitions, 836 flow. Second operand 6 states and 738 transitions. [2022-11-20 10:55:24,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 226 transitions, 1336 flow [2022-11-20 10:55:25,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 226 transitions, 1283 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-11-20 10:55:25,664 INFO L231 Difference]: Finished difference. Result has 173 places, 186 transitions, 932 flow [2022-11-20 10:55:25,665 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=932, PETRI_PLACES=173, PETRI_TRANSITIONS=186} [2022-11-20 10:55:25,666 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 22 predicate places. [2022-11-20 10:55:25,666 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 186 transitions, 932 flow [2022-11-20 10:55:25,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:25,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:25,667 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:25,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:55:25,668 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:55:25,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:25,668 INFO L85 PathProgramCache]: Analyzing trace with hash -340736172, now seen corresponding path program 3 times [2022-11-20 10:55:25,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:25,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553505205] [2022-11-20 10:55:25,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:25,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:26,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:26,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:26,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553505205] [2022-11-20 10:55:26,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553505205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:26,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:26,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:55:26,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24841929] [2022-11-20 10:55:26,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:26,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:55:26,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:26,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:55:26,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:55:26,371 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 169 [2022-11-20 10:55:26,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 186 transitions, 932 flow. Second operand has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:26,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:26,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 169 [2022-11-20 10:55:26,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:31,362 INFO L130 PetriNetUnfolder]: 24909/36154 cut-off events. [2022-11-20 10:55:31,362 INFO L131 PetriNetUnfolder]: For 60056/60223 co-relation queries the response was YES. [2022-11-20 10:55:31,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115242 conditions, 36154 events. 24909/36154 cut-off events. For 60056/60223 co-relation queries the response was YES. Maximal size of possible extension queue 1723. Compared 232181 event pairs, 6796 based on Foata normal form. 363/31773 useless extension candidates. Maximal degree in co-relation 115222. Up to 16404 conditions per place. [2022-11-20 10:55:32,051 INFO L137 encePairwiseOnDemand]: 157/169 looper letters, 125 selfloop transitions, 39 changer transitions 2/250 dead transitions. [2022-11-20 10:55:32,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 250 transitions, 1549 flow [2022-11-20 10:55:32,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:55:32,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:55:32,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 864 transitions. [2022-11-20 10:55:32,055 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7303465765004227 [2022-11-20 10:55:32,055 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 864 transitions. [2022-11-20 10:55:32,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 864 transitions. [2022-11-20 10:55:32,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:32,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 864 transitions. [2022-11-20 10:55:32,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 123.42857142857143) internal successors, (864), 7 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:32,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:32,063 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:32,063 INFO L175 Difference]: Start difference. First operand has 173 places, 186 transitions, 932 flow. Second operand 7 states and 864 transitions. [2022-11-20 10:55:32,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 250 transitions, 1549 flow [2022-11-20 10:55:32,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 250 transitions, 1498 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-11-20 10:55:32,970 INFO L231 Difference]: Finished difference. Result has 178 places, 187 transitions, 1022 flow [2022-11-20 10:55:32,971 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1022, PETRI_PLACES=178, PETRI_TRANSITIONS=187} [2022-11-20 10:55:32,972 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 27 predicate places. [2022-11-20 10:55:32,973 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 187 transitions, 1022 flow [2022-11-20 10:55:32,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:32,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:32,974 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:32,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:55:32,974 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:55:32,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:32,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1358545180, now seen corresponding path program 1 times [2022-11-20 10:55:32,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:32,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158411406] [2022-11-20 10:55:32,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:32,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:33,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:33,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:33,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158411406] [2022-11-20 10:55:33,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158411406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:33,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:33,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:55:33,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741792005] [2022-11-20 10:55:33,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:33,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:55:33,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:33,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:55:33,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:55:33,499 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 169 [2022-11-20 10:55:33,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 187 transitions, 1022 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:33,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:33,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 169 [2022-11-20 10:55:33,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:38,637 INFO L130 PetriNetUnfolder]: 24706/35034 cut-off events. [2022-11-20 10:55:38,638 INFO L131 PetriNetUnfolder]: For 78986/79102 co-relation queries the response was YES. [2022-11-20 10:55:38,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117910 conditions, 35034 events. 24706/35034 cut-off events. For 78986/79102 co-relation queries the response was YES. Maximal size of possible extension queue 1673. Compared 216660 event pairs, 5730 based on Foata normal form. 0/30600 useless extension candidates. Maximal degree in co-relation 117889. Up to 26895 conditions per place. [2022-11-20 10:55:38,923 INFO L137 encePairwiseOnDemand]: 156/169 looper letters, 112 selfloop transitions, 65 changer transitions 2/263 dead transitions. [2022-11-20 10:55:38,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 263 transitions, 2096 flow [2022-11-20 10:55:38,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:55:38,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:55:38,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 740 transitions. [2022-11-20 10:55:38,925 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7297830374753451 [2022-11-20 10:55:38,925 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 740 transitions. [2022-11-20 10:55:38,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 740 transitions. [2022-11-20 10:55:38,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:38,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 740 transitions. [2022-11-20 10:55:38,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.33333333333333) internal successors, (740), 6 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:38,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:38,930 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:38,930 INFO L175 Difference]: Start difference. First operand has 178 places, 187 transitions, 1022 flow. Second operand 6 states and 740 transitions. [2022-11-20 10:55:38,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 263 transitions, 2096 flow [2022-11-20 10:55:40,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 263 transitions, 2023 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:55:40,187 INFO L231 Difference]: Finished difference. Result has 181 places, 219 transitions, 1640 flow [2022-11-20 10:55:40,187 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1640, PETRI_PLACES=181, PETRI_TRANSITIONS=219} [2022-11-20 10:55:40,188 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 30 predicate places. [2022-11-20 10:55:40,188 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 219 transitions, 1640 flow [2022-11-20 10:55:40,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:40,189 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:40,189 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:40,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:55:40,190 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:55:40,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:40,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1704186890, now seen corresponding path program 2 times [2022-11-20 10:55:40,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:40,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537134691] [2022-11-20 10:55:40,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:40,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:40,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:40,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:40,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537134691] [2022-11-20 10:55:40,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537134691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:40,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:40,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:55:40,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972019284] [2022-11-20 10:55:40,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:40,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:55:40,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:40,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:55:40,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:55:40,769 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 169 [2022-11-20 10:55:40,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 219 transitions, 1640 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:40,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:40,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 169 [2022-11-20 10:55:40,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:46,876 INFO L130 PetriNetUnfolder]: 23833/33377 cut-off events. [2022-11-20 10:55:46,876 INFO L131 PetriNetUnfolder]: For 79187/79361 co-relation queries the response was YES. [2022-11-20 10:55:46,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120101 conditions, 33377 events. 23833/33377 cut-off events. For 79187/79361 co-relation queries the response was YES. Maximal size of possible extension queue 1716. Compared 202957 event pairs, 5710 based on Foata normal form. 196/32920 useless extension candidates. Maximal degree in co-relation 120077. Up to 26506 conditions per place. [2022-11-20 10:55:47,145 INFO L137 encePairwiseOnDemand]: 156/169 looper letters, 114 selfloop transitions, 59 changer transitions 2/259 dead transitions. [2022-11-20 10:55:47,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 259 transitions, 2126 flow [2022-11-20 10:55:47,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:55:47,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:55:47,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 738 transitions. [2022-11-20 10:55:47,149 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.727810650887574 [2022-11-20 10:55:47,150 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 738 transitions. [2022-11-20 10:55:47,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 738 transitions. [2022-11-20 10:55:47,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:47,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 738 transitions. [2022-11-20 10:55:47,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:47,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:47,157 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:47,157 INFO L175 Difference]: Start difference. First operand has 181 places, 219 transitions, 1640 flow. Second operand 6 states and 738 transitions. [2022-11-20 10:55:47,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 259 transitions, 2126 flow [2022-11-20 10:55:48,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 259 transitions, 2067 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:55:48,156 INFO L231 Difference]: Finished difference. Result has 185 places, 215 transitions, 1666 flow [2022-11-20 10:55:48,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1666, PETRI_PLACES=185, PETRI_TRANSITIONS=215} [2022-11-20 10:55:48,157 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 34 predicate places. [2022-11-20 10:55:48,158 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 215 transitions, 1666 flow [2022-11-20 10:55:48,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:48,159 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:48,159 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:48,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:55:48,159 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:55:48,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:48,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1568040222, now seen corresponding path program 1 times [2022-11-20 10:55:48,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:48,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984935170] [2022-11-20 10:55:48,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:48,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:48,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:48,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:48,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984935170] [2022-11-20 10:55:48,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984935170] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:55:48,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7707863] [2022-11-20 10:55:48,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:48,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:48,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:55:48,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:55:48,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a415913c-321c-4232-b096-acc1e779d995/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:55:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:48,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:55:48,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:55:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:49,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:55:50,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:50,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7707863] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:55:50,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:55:50,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-11-20 10:55:50,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759571223] [2022-11-20 10:55:50,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:55:50,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 10:55:50,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:50,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 10:55:50,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:55:50,317 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 169 [2022-11-20 10:55:50,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 215 transitions, 1666 flow. Second operand has 14 states, 14 states have (on average 111.5) internal successors, (1561), 14 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:50,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:50,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 169 [2022-11-20 10:55:50,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand