./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc --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 a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f --- 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-5e519f3 [2022-11-02 20:33:56,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:33:56,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:33:56,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:33:56,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:33:56,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:33:56,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:33:56,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:33:56,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:33:56,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:33:56,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:33:56,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:33:56,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:33:56,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:33:56,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:33:56,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:33:56,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:33:56,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:33:56,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:33:56,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:33:56,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:33:56,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:33:56,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:33:56,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:33:56,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:33:56,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:33:56,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:33:56,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:33:56,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:33:56,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:33:56,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:33:56,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:33:56,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:33:56,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:33:56,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:33:56,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:33:56,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:33:56,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:33:56,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:33:56,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:33:56,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:33:56,632 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:33:56,653 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:33:56,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:33:56,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:33:56,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:33:56,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:33:56,656 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:33:56,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:33:56,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:33:56,657 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:33:56,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:33:56,658 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:33:56,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:33:56,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:33:56,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:33:56,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:33:56,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:33:56,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:33:56,663 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:33:56,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:33:56,663 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:33:56,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:33:56,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:33:56,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:33:56,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:33:56,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:33:56,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:33:56,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:33:56,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:33:56,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:33:56,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:33:56,669 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:33:56,669 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:33:56,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:33:56,670 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_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f [2022-11-02 20:33:56,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:33:56,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:33:56,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:33:56,994 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:33:56,995 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:33:56,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2022-11-02 20:33:57,078 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/data/effda4c52/3913c2ca03f14aa5b5729eb72a4663b3/FLAG8d6fc2ba1 [2022-11-02 20:33:57,617 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:33:57,617 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2022-11-02 20:33:57,625 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/data/effda4c52/3913c2ca03f14aa5b5729eb72a4663b3/FLAG8d6fc2ba1 [2022-11-02 20:33:57,970 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/data/effda4c52/3913c2ca03f14aa5b5729eb72a4663b3 [2022-11-02 20:33:57,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:33:57,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:33:57,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:33:57,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:33:57,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:33:57,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:33:57" (1/1) ... [2022-11-02 20:33:57,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f487f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:57, skipping insertion in model container [2022-11-02 20:33:57,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:33:57" (1/1) ... [2022-11-02 20:33:57,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:33:58,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:33:58,251 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-11-02 20:33:58,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:33:58,278 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:33:58,311 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-11-02 20:33:58,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:33:58,345 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:33:58,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:58 WrapperNode [2022-11-02 20:33:58,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:33:58,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:33:58,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:33:58,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:33:58,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:58" (1/1) ... [2022-11-02 20:33:58,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:58" (1/1) ... [2022-11-02 20:33:58,390 INFO L138 Inliner]: procedures = 27, calls = 75, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 174 [2022-11-02 20:33:58,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:33:58,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:33:58,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:33:58,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:33:58,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:58" (1/1) ... [2022-11-02 20:33:58,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:58" (1/1) ... [2022-11-02 20:33:58,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:58" (1/1) ... [2022-11-02 20:33:58,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:58" (1/1) ... [2022-11-02 20:33:58,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:58" (1/1) ... [2022-11-02 20:33:58,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:58" (1/1) ... [2022-11-02 20:33:58,424 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:58" (1/1) ... [2022-11-02 20:33:58,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:58" (1/1) ... [2022-11-02 20:33:58,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:33:58,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:33:58,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:33:58,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:33:58,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:58" (1/1) ... [2022-11-02 20:33:58,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:33:58,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:33:58,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:33:58,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:33:58,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:33:58,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:33:58,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:33:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:33:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:33:58,523 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:33:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:33:58,525 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:33:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 20:33:58,529 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 20:33:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-02 20:33:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-02 20:33:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:33:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-02 20:33:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-02 20:33:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:33:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:33:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:33:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:33:58,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:33:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:33:58,532 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:33:58,647 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:33:58,649 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:33:59,029 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:33:59,245 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:33:59,255 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-02 20:33:59,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:33:59 BoogieIcfgContainer [2022-11-02 20:33:59,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:33:59,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:33:59,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:33:59,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:33:59,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:33:57" (1/3) ... [2022-11-02 20:33:59,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e26a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:33:59, skipping insertion in model container [2022-11-02 20:33:59,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:58" (2/3) ... [2022-11-02 20:33:59,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e26a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:33:59, skipping insertion in model container [2022-11-02 20:33:59,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:33:59" (3/3) ... [2022-11-02 20:33:59,274 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2022-11-02 20:33:59,286 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:33:59,298 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:33:59,299 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:33:59,299 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:33:59,402 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-02 20:33:59,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 195 transitions, 430 flow [2022-11-02 20:33:59,610 INFO L130 PetriNetUnfolder]: 14/190 cut-off events. [2022-11-02 20:33:59,611 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-02 20:33:59,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 190 events. 14/190 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 133 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 153. Up to 2 conditions per place. [2022-11-02 20:33:59,616 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 195 transitions, 430 flow [2022-11-02 20:33:59,622 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 175 transitions, 380 flow [2022-11-02 20:33:59,634 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:33:59,640 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7bfca12b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:33:59,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-02 20:33:59,689 INFO L130 PetriNetUnfolder]: 14/174 cut-off events. [2022-11-02 20:33:59,690 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-02 20:33:59,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:33:59,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:59,691 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 3 more)] === [2022-11-02 20:33:59,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:59,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1225902370, now seen corresponding path program 1 times [2022-11-02 20:33:59,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:59,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688011964] [2022-11-02 20:33:59,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:59,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:00,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:00,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:00,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688011964] [2022-11-02 20:34:00,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688011964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:00,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:00,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:34:00,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829791547] [2022-11-02 20:34:00,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:00,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:34:00,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:00,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:34:00,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:34:00,175 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 195 [2022-11-02 20:34:00,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 175 transitions, 380 flow. Second operand has 2 states, 2 states have (on average 176.0) internal successors, (352), 2 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:00,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:34:00,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 195 [2022-11-02 20:34:00,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:34:00,611 INFO L130 PetriNetUnfolder]: 308/1173 cut-off events. [2022-11-02 20:34:00,611 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2022-11-02 20:34:00,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1738 conditions, 1173 events. 308/1173 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7402 event pairs, 205 based on Foata normal form. 235/1255 useless extension candidates. Maximal degree in co-relation 1528. Up to 402 conditions per place. [2022-11-02 20:34:00,634 INFO L137 encePairwiseOnDemand]: 186/195 looper letters, 16 selfloop transitions, 0 changer transitions 4/166 dead transitions. [2022-11-02 20:34:00,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 166 transitions, 394 flow [2022-11-02 20:34:00,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:34:00,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:34:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 363 transitions. [2022-11-02 20:34:00,657 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9307692307692308 [2022-11-02 20:34:00,658 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 363 transitions. [2022-11-02 20:34:00,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 363 transitions. [2022-11-02 20:34:00,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:34:00,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 363 transitions. [2022-11-02 20:34:00,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 181.5) internal successors, (363), 2 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:00,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:00,680 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:00,682 INFO L175 Difference]: Start difference. First operand has 177 places, 175 transitions, 380 flow. Second operand 2 states and 363 transitions. [2022-11-02 20:34:00,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 166 transitions, 394 flow [2022-11-02 20:34:00,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 166 transitions, 374 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-11-02 20:34:00,701 INFO L231 Difference]: Finished difference. Result has 168 places, 162 transitions, 334 flow [2022-11-02 20:34:00,704 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=334, PETRI_PLACES=168, PETRI_TRANSITIONS=162} [2022-11-02 20:34:00,708 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, -9 predicate places. [2022-11-02 20:34:00,708 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 162 transitions, 334 flow [2022-11-02 20:34:00,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 176.0) internal successors, (352), 2 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:00,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:34:00,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:00,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:34:00,711 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 3 more)] === [2022-11-02 20:34:00,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:00,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1013173578, now seen corresponding path program 1 times [2022-11-02 20:34:00,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:00,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150172286] [2022-11-02 20:34:00,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:00,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:01,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:01,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:01,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150172286] [2022-11-02 20:34:01,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150172286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:01,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:01,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:34:01,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7818484] [2022-11-02 20:34:01,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:01,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:34:01,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:01,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:34:01,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:34:01,527 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 195 [2022-11-02 20:34:01,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 162 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:01,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:34:01,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 195 [2022-11-02 20:34:01,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:34:04,913 INFO L130 PetriNetUnfolder]: 8050/15230 cut-off events. [2022-11-02 20:34:04,914 INFO L131 PetriNetUnfolder]: For 246/246 co-relation queries the response was YES. [2022-11-02 20:34:04,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26981 conditions, 15230 events. 8050/15230 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 135908 event pairs, 4677 based on Foata normal form. 0/12260 useless extension candidates. Maximal degree in co-relation 26978. Up to 6422 conditions per place. [2022-11-02 20:34:05,088 INFO L137 encePairwiseOnDemand]: 189/195 looper letters, 60 selfloop transitions, 5 changer transitions 0/181 dead transitions. [2022-11-02 20:34:05,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 181 transitions, 506 flow [2022-11-02 20:34:05,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:34:05,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:34:05,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 876 transitions. [2022-11-02 20:34:05,093 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7487179487179487 [2022-11-02 20:34:05,094 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 876 transitions. [2022-11-02 20:34:05,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 876 transitions. [2022-11-02 20:34:05,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:34:05,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 876 transitions. [2022-11-02 20:34:05,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:05,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:05,105 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:05,106 INFO L175 Difference]: Start difference. First operand has 168 places, 162 transitions, 334 flow. Second operand 6 states and 876 transitions. [2022-11-02 20:34:05,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 181 transitions, 506 flow [2022-11-02 20:34:05,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 181 transitions, 506 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:34:05,115 INFO L231 Difference]: Finished difference. Result has 170 places, 163 transitions, 352 flow [2022-11-02 20:34:05,116 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=352, PETRI_PLACES=170, PETRI_TRANSITIONS=163} [2022-11-02 20:34:05,117 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, -7 predicate places. [2022-11-02 20:34:05,117 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 163 transitions, 352 flow [2022-11-02 20:34:05,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:05,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:34:05,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:05,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:34:05,119 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 3 more)] === [2022-11-02 20:34:05,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:05,122 INFO L85 PathProgramCache]: Analyzing trace with hash 476280668, now seen corresponding path program 1 times [2022-11-02 20:34:05,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:05,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375419439] [2022-11-02 20:34:05,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:05,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:05,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:05,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:05,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375419439] [2022-11-02 20:34:05,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375419439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:05,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:05,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:34:05,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084430142] [2022-11-02 20:34:05,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:05,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:34:05,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:05,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:34:05,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:34:05,469 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 195 [2022-11-02 20:34:05,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 163 transitions, 352 flow. Second operand has 7 states, 7 states have (on average 147.57142857142858) internal successors, (1033), 7 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:05,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:34:05,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 195 [2022-11-02 20:34:05,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:34:08,593 INFO L130 PetriNetUnfolder]: 9579/16177 cut-off events. [2022-11-02 20:34:08,593 INFO L131 PetriNetUnfolder]: For 2270/2270 co-relation queries the response was YES. [2022-11-02 20:34:08,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31815 conditions, 16177 events. 9579/16177 cut-off events. For 2270/2270 co-relation queries the response was YES. Maximal size of possible extension queue 910. Compared 131191 event pairs, 7218 based on Foata normal form. 249/13678 useless extension candidates. Maximal degree in co-relation 31810. Up to 10634 conditions per place. [2022-11-02 20:34:08,753 INFO L137 encePairwiseOnDemand]: 186/195 looper letters, 41 selfloop transitions, 6 changer transitions 35/202 dead transitions. [2022-11-02 20:34:08,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 202 transitions, 608 flow [2022-11-02 20:34:08,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:34:08,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 20:34:08,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1226 transitions. [2022-11-02 20:34:08,757 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7858974358974359 [2022-11-02 20:34:08,757 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1226 transitions. [2022-11-02 20:34:08,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1226 transitions. [2022-11-02 20:34:08,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:34:08,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1226 transitions. [2022-11-02 20:34:08,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 153.25) internal successors, (1226), 8 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:08,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 195.0) internal successors, (1755), 9 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:08,765 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 195.0) internal successors, (1755), 9 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:08,765 INFO L175 Difference]: Start difference. First operand has 170 places, 163 transitions, 352 flow. Second operand 8 states and 1226 transitions. [2022-11-02 20:34:08,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 202 transitions, 608 flow [2022-11-02 20:34:08,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 202 transitions, 599 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:34:08,771 INFO L231 Difference]: Finished difference. Result has 176 places, 164 transitions, 368 flow [2022-11-02 20:34:08,771 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=368, PETRI_PLACES=176, PETRI_TRANSITIONS=164} [2022-11-02 20:34:08,772 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, -1 predicate places. [2022-11-02 20:34:08,772 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 164 transitions, 368 flow [2022-11-02 20:34:08,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 147.57142857142858) internal successors, (1033), 7 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:08,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:34:08,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:08,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:34:08,774 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 3 more)] === [2022-11-02 20:34:08,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:08,775 INFO L85 PathProgramCache]: Analyzing trace with hash -235027319, now seen corresponding path program 1 times [2022-11-02 20:34:08,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:08,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473387908] [2022-11-02 20:34:08,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:08,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:09,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:34:09,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:09,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473387908] [2022-11-02 20:34:09,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473387908] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:09,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177485521] [2022-11-02 20:34:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:09,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:09,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:09,134 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:34:09,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:34:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:09,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:34:09,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:09,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:34:09,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:10,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:34:10,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177485521] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:10,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:10,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-11-02 20:34:10,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287475482] [2022-11-02 20:34:10,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:10,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:34:10,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:10,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:34:10,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:34:10,036 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 195 [2022-11-02 20:34:10,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 164 transitions, 368 flow. Second operand has 7 states, 7 states have (on average 147.85714285714286) internal successors, (1035), 7 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:10,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:34:10,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 195 [2022-11-02 20:34:10,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:34:12,583 INFO L130 PetriNetUnfolder]: 7859/14138 cut-off events. [2022-11-02 20:34:12,584 INFO L131 PetriNetUnfolder]: For 1317/1688 co-relation queries the response was YES. [2022-11-02 20:34:12,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26955 conditions, 14138 events. 7859/14138 cut-off events. For 1317/1688 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 118648 event pairs, 5749 based on Foata normal form. 371/12183 useless extension candidates. Maximal degree in co-relation 26947. Up to 4982 conditions per place. [2022-11-02 20:34:12,728 INFO L137 encePairwiseOnDemand]: 187/195 looper letters, 52 selfloop transitions, 7 changer transitions 0/180 dead transitions. [2022-11-02 20:34:12,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 180 transitions, 526 flow [2022-11-02 20:34:12,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:12,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:34:12,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1060 transitions. [2022-11-02 20:34:12,732 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7765567765567766 [2022-11-02 20:34:12,733 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1060 transitions. [2022-11-02 20:34:12,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1060 transitions. [2022-11-02 20:34:12,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:34:12,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1060 transitions. [2022-11-02 20:34:12,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 151.42857142857142) internal successors, (1060), 7 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:12,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:12,740 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:12,740 INFO L175 Difference]: Start difference. First operand has 176 places, 164 transitions, 368 flow. Second operand 7 states and 1060 transitions. [2022-11-02 20:34:12,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 180 transitions, 526 flow [2022-11-02 20:34:12,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 180 transitions, 510 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-02 20:34:12,748 INFO L231 Difference]: Finished difference. Result has 177 places, 166 transitions, 387 flow [2022-11-02 20:34:12,748 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=387, PETRI_PLACES=177, PETRI_TRANSITIONS=166} [2022-11-02 20:34:12,749 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 0 predicate places. [2022-11-02 20:34:12,749 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 166 transitions, 387 flow [2022-11-02 20:34:12,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 147.85714285714286) internal successors, (1035), 7 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:12,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:34:12,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:12,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:12,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:12,968 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 3 more)] === [2022-11-02 20:34:12,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:12,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2114695849, now seen corresponding path program 1 times [2022-11-02 20:34:12,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:12,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134156706] [2022-11-02 20:34:12,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:12,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:34:13,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:13,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134156706] [2022-11-02 20:34:13,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134156706] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:13,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967140736] [2022-11-02 20:34:13,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:13,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:13,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:13,229 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:34:13,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:34:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:13,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:34:13,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:13,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:34:13,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:13,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:34:13,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967140736] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:13,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:13,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-11-02 20:34:13,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69997243] [2022-11-02 20:34:13,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:13,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:34:13,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:13,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:34:13,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:34:13,677 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 195 [2022-11-02 20:34:13,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 166 transitions, 387 flow. Second operand has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:13,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:34:13,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 195 [2022-11-02 20:34:13,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:34:15,666 INFO L130 PetriNetUnfolder]: 8398/12890 cut-off events. [2022-11-02 20:34:15,666 INFO L131 PetriNetUnfolder]: For 2831/4488 co-relation queries the response was YES. [2022-11-02 20:34:15,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27295 conditions, 12890 events. 8398/12890 cut-off events. For 2831/4488 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 89162 event pairs, 3115 based on Foata normal form. 1657/12786 useless extension candidates. Maximal degree in co-relation 27286. Up to 5611 conditions per place. [2022-11-02 20:34:15,810 INFO L137 encePairwiseOnDemand]: 187/195 looper letters, 54 selfloop transitions, 7 changer transitions 0/182 dead transitions. [2022-11-02 20:34:15,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 182 transitions, 555 flow [2022-11-02 20:34:15,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:15,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:34:15,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1060 transitions. [2022-11-02 20:34:15,815 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7765567765567766 [2022-11-02 20:34:15,815 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1060 transitions. [2022-11-02 20:34:15,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1060 transitions. [2022-11-02 20:34:15,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:34:15,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1060 transitions. [2022-11-02 20:34:15,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 151.42857142857142) internal successors, (1060), 7 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:15,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:15,824 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:15,824 INFO L175 Difference]: Start difference. First operand has 177 places, 166 transitions, 387 flow. Second operand 7 states and 1060 transitions. [2022-11-02 20:34:15,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 182 transitions, 555 flow [2022-11-02 20:34:15,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 182 transitions, 546 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:34:15,830 INFO L231 Difference]: Finished difference. Result has 181 places, 167 transitions, 406 flow [2022-11-02 20:34:15,831 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=406, PETRI_PLACES=181, PETRI_TRANSITIONS=167} [2022-11-02 20:34:15,834 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 4 predicate places. [2022-11-02 20:34:15,834 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 167 transitions, 406 flow [2022-11-02 20:34:15,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:15,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:34:15,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:15,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:16,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:16,059 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 3 more)] === [2022-11-02 20:34:16,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:16,060 INFO L85 PathProgramCache]: Analyzing trace with hash -2037018501, now seen corresponding path program 1 times [2022-11-02 20:34:16,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:16,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811924396] [2022-11-02 20:34:16,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:16,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:16,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:34:16,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:16,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811924396] [2022-11-02 20:34:16,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811924396] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:16,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109277320] [2022-11-02 20:34:16,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:16,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:16,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:16,308 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:34:16,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:34:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:16,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:34:16,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:16,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:34:16,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:16,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:34:16,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109277320] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:16,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:16,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 7] total 14 [2022-11-02 20:34:16,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889718193] [2022-11-02 20:34:16,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:16,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:34:16,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:16,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:34:16,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:34:16,938 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 195 [2022-11-02 20:34:16,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 167 transitions, 406 flow. Second operand has 7 states, 7 states have (on average 148.42857142857142) internal successors, (1039), 7 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:16,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:34:16,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 195 [2022-11-02 20:34:16,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:34:19,091 INFO L130 PetriNetUnfolder]: 8242/16357 cut-off events. [2022-11-02 20:34:19,092 INFO L131 PetriNetUnfolder]: For 5462/8567 co-relation queries the response was YES. [2022-11-02 20:34:19,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32389 conditions, 16357 events. 8242/16357 cut-off events. For 5462/8567 co-relation queries the response was YES. Maximal size of possible extension queue 898. Compared 150102 event pairs, 3210 based on Foata normal form. 3105/18884 useless extension candidates. Maximal degree in co-relation 32378. Up to 6073 conditions per place. [2022-11-02 20:34:19,244 INFO L137 encePairwiseOnDemand]: 187/195 looper letters, 57 selfloop transitions, 7 changer transitions 0/185 dead transitions. [2022-11-02 20:34:19,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 185 transitions, 591 flow [2022-11-02 20:34:19,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:19,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:34:19,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1061 transitions. [2022-11-02 20:34:19,247 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7772893772893773 [2022-11-02 20:34:19,248 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1061 transitions. [2022-11-02 20:34:19,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1061 transitions. [2022-11-02 20:34:19,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:34:19,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1061 transitions. [2022-11-02 20:34:19,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 151.57142857142858) internal successors, (1061), 7 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:19,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:19,255 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:19,255 INFO L175 Difference]: Start difference. First operand has 181 places, 167 transitions, 406 flow. Second operand 7 states and 1061 transitions. [2022-11-02 20:34:19,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 185 transitions, 591 flow [2022-11-02 20:34:19,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 185 transitions, 580 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:34:19,260 INFO L231 Difference]: Finished difference. Result has 184 places, 168 transitions, 423 flow [2022-11-02 20:34:19,261 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=423, PETRI_PLACES=184, PETRI_TRANSITIONS=168} [2022-11-02 20:34:19,262 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 7 predicate places. [2022-11-02 20:34:19,262 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 168 transitions, 423 flow [2022-11-02 20:34:19,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.42857142857142) internal successors, (1039), 7 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:19,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:34:19,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:19,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:19,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:34:19,479 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 3 more)] === [2022-11-02 20:34:19,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:19,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1020923787, now seen corresponding path program 1 times [2022-11-02 20:34:19,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:19,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009277675] [2022-11-02 20:34:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:19,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:20,895 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:34:20,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:20,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009277675] [2022-11-02 20:34:20,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009277675] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:20,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719211447] [2022-11-02 20:34:20,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:20,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:20,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:20,903 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:34:20,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:34:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:21,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 20:34:21,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:21,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:34:21,577 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:34:21,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:34:22,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719211447] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:22,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:22,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 16] total 26 [2022-11-02 20:34:22,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149254980] [2022-11-02 20:34:22,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:22,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:34:22,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:22,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:34:22,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:34:22,283 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 195 [2022-11-02 20:34:22,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 168 transitions, 423 flow. Second operand has 10 states, 10 states have (on average 126.1) internal successors, (1261), 10 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:22,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:34:22,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 195 [2022-11-02 20:34:22,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:34:39,772 INFO L130 PetriNetUnfolder]: 44857/79203 cut-off events. [2022-11-02 20:34:39,772 INFO L131 PetriNetUnfolder]: For 30395/30395 co-relation queries the response was YES. [2022-11-02 20:34:40,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166756 conditions, 79203 events. 44857/79203 cut-off events. For 30395/30395 co-relation queries the response was YES. Maximal size of possible extension queue 3345. Compared 788707 event pairs, 9151 based on Foata normal form. 2/77445 useless extension candidates. Maximal degree in co-relation 166743. Up to 15827 conditions per place. [2022-11-02 20:34:40,703 INFO L137 encePairwiseOnDemand]: 179/195 looper letters, 231 selfloop transitions, 37 changer transitions 38/411 dead transitions. [2022-11-02 20:34:40,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 411 transitions, 1757 flow [2022-11-02 20:34:40,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:34:40,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-02 20:34:40,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2092 transitions. [2022-11-02 20:34:40,716 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7152136752136752 [2022-11-02 20:34:40,717 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2092 transitions. [2022-11-02 20:34:40,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2092 transitions. [2022-11-02 20:34:40,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:34:40,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2092 transitions. [2022-11-02 20:34:40,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 139.46666666666667) internal successors, (2092), 15 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:40,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 195.0) internal successors, (3120), 16 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:40,741 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 195.0) internal successors, (3120), 16 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:40,741 INFO L175 Difference]: Start difference. First operand has 184 places, 168 transitions, 423 flow. Second operand 15 states and 2092 transitions. [2022-11-02 20:34:40,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 411 transitions, 1757 flow [2022-11-02 20:34:41,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 411 transitions, 1747 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:34:41,275 INFO L231 Difference]: Finished difference. Result has 207 places, 208 transitions, 713 flow [2022-11-02 20:34:41,276 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=713, PETRI_PLACES=207, PETRI_TRANSITIONS=208} [2022-11-02 20:34:41,276 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 30 predicate places. [2022-11-02 20:34:41,276 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 208 transitions, 713 flow [2022-11-02 20:34:41,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 126.1) internal successors, (1261), 10 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:41,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:34:41,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:41,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:41,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:41,491 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 3 more)] === [2022-11-02 20:34:41,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:41,492 INFO L85 PathProgramCache]: Analyzing trace with hash -563195497, now seen corresponding path program 2 times [2022-11-02 20:34:41,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:41,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824059474] [2022-11-02 20:34:41,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:41,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:42,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:34:42,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:42,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824059474] [2022-11-02 20:34:42,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824059474] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:42,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037107088] [2022-11-02 20:34:42,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:34:42,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:42,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:42,053 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:34:42,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:34:42,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:34:42,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:34:42,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:34:42,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:42,537 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:34:42,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:42,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:34:42,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037107088] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:42,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:34:42,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-11-02 20:34:42,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772276129] [2022-11-02 20:34:42,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:42,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:34:42,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:42,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:34:42,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:34:42,848 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 195 [2022-11-02 20:34:42,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 208 transitions, 713 flow. Second operand has 9 states, 9 states have (on average 153.66666666666666) internal successors, (1383), 9 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:42,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:34:42,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 195 [2022-11-02 20:34:42,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:34:45,921 INFO L130 PetriNetUnfolder]: 5791/14954 cut-off events. [2022-11-02 20:34:45,921 INFO L131 PetriNetUnfolder]: For 22191/24294 co-relation queries the response was YES. [2022-11-02 20:34:46,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39630 conditions, 14954 events. 5791/14954 cut-off events. For 22191/24294 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 155165 event pairs, 933 based on Foata normal form. 201/14392 useless extension candidates. Maximal degree in co-relation 39604. Up to 4595 conditions per place. [2022-11-02 20:34:46,135 INFO L137 encePairwiseOnDemand]: 189/195 looper letters, 103 selfloop transitions, 6 changer transitions 6/268 dead transitions. [2022-11-02 20:34:46,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 268 transitions, 1250 flow [2022-11-02 20:34:46,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:46,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:34:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1080 transitions. [2022-11-02 20:34:46,138 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7912087912087912 [2022-11-02 20:34:46,139 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1080 transitions. [2022-11-02 20:34:46,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1080 transitions. [2022-11-02 20:34:46,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:34:46,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1080 transitions. [2022-11-02 20:34:46,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.28571428571428) internal successors, (1080), 7 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:46,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:46,146 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:46,146 INFO L175 Difference]: Start difference. First operand has 207 places, 208 transitions, 713 flow. Second operand 7 states and 1080 transitions. [2022-11-02 20:34:46,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 268 transitions, 1250 flow [2022-11-02 20:34:46,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 268 transitions, 1238 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-02 20:34:46,513 INFO L231 Difference]: Finished difference. Result has 209 places, 212 transitions, 757 flow [2022-11-02 20:34:46,513 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=757, PETRI_PLACES=209, PETRI_TRANSITIONS=212} [2022-11-02 20:34:46,514 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 32 predicate places. [2022-11-02 20:34:46,514 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 212 transitions, 757 flow [2022-11-02 20:34:46,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 153.66666666666666) internal successors, (1383), 9 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:46,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:34:46,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:46,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:46,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:46,731 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 3 more)] === [2022-11-02 20:34:46,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:46,732 INFO L85 PathProgramCache]: Analyzing trace with hash -962659069, now seen corresponding path program 3 times [2022-11-02 20:34:46,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:46,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613859355] [2022-11-02 20:34:46,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:46,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:47,640 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:34:47,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:47,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613859355] [2022-11-02 20:34:47,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613859355] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:47,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998890817] [2022-11-02 20:34:47,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:34:47,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:47,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:47,642 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:34:47,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4eeb694-abc4-479d-8a75-47b3f66f92cd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:34:48,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-02 20:34:48,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:34:48,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 20:34:48,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:48,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:34:48,339 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:34:48,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-11-02 20:34:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:34:48,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:48,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2022-11-02 20:34:48,998 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:34:48,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998890817] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:48,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:34:48,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 8] total 24 [2022-11-02 20:34:48,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314542742] [2022-11-02 20:34:48,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:49,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 20:34:49,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:49,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 20:34:49,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:34:49,004 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 195 [2022-11-02 20:34:49,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 212 transitions, 757 flow. Second operand has 24 states, 24 states have (on average 113.375) internal successors, (2721), 24 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:49,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:34:49,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 195 [2022-11-02 20:34:49,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand