./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-poker-hand-trans.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_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/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_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-poker-hand-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/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_d316f035-c5c8-4972-a04d-472a6023c2dc/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 4e4f4f4fe5f72416e0e44275f74b26f9ea6749f134c13c768c7ed2450972cbc3 --- 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 21:03:04,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:03:04,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:03:04,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:03:04,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:03:04,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:03:04,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:03:04,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:03:04,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:03:04,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:03:04,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:03:04,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:03:04,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:03:04,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:03:04,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:03:04,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:03:04,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:03:04,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:03:04,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:03:04,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:03:04,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:03:04,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:03:04,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:03:04,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:03:04,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:03:04,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:03:04,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:03:04,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:03:04,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:03:04,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:03:04,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:03:04,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:03:04,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:03:04,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:03:04,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:03:04,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:03:04,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:03:04,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:03:04,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:03:04,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:03:04,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:03:04,476 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:03:04,517 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:03:04,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:03:04,519 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:03:04,519 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:03:04,520 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:03:04,520 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:03:04,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:03:04,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:03:04,521 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:03:04,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:03:04,523 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:03:04,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:03:04,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:03:04,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:03:04,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:03:04,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:03:04,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:03:04,524 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:03:04,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:03:04,525 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:03:04,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:03:04,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:03:04,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:03:04,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:03:04,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:04,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:03:04,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:03:04,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:03:04,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:03:04,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:03:04,527 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:03:04,528 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:03:04,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:03:04,528 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_d316f035-c5c8-4972-a04d-472a6023c2dc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e4f4f4fe5f72416e0e44275f74b26f9ea6749f134c13c768c7ed2450972cbc3 [2022-11-02 21:03:04,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:03:04,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:03:04,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:03:04,888 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:03:04,889 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:03:04,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/chl-poker-hand-trans.wvr.c [2022-11-02 21:03:04,979 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/data/51017d854/2c5c8397206447548f4d3e9f158b7006/FLAG89c811220 [2022-11-02 21:03:05,535 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:03:05,536 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/sv-benchmarks/c/weaver/chl-poker-hand-trans.wvr.c [2022-11-02 21:03:05,547 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/data/51017d854/2c5c8397206447548f4d3e9f158b7006/FLAG89c811220 [2022-11-02 21:03:05,850 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/data/51017d854/2c5c8397206447548f4d3e9f158b7006 [2022-11-02 21:03:05,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:03:05,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:03:05,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:05,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:03:05,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:03:05,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:05" (1/1) ... [2022-11-02 21:03:05,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c164738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:05, skipping insertion in model container [2022-11-02 21:03:05,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:05" (1/1) ... [2022-11-02 21:03:05,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:03:05,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:03:06,301 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_d316f035-c5c8-4972-a04d-472a6023c2dc/sv-benchmarks/c/weaver/chl-poker-hand-trans.wvr.c[18874,18887] [2022-11-02 21:03:06,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:06,319 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:03:06,430 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_d316f035-c5c8-4972-a04d-472a6023c2dc/sv-benchmarks/c/weaver/chl-poker-hand-trans.wvr.c[18874,18887] [2022-11-02 21:03:06,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:06,449 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:03:06,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:06 WrapperNode [2022-11-02 21:03:06,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:06,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:06,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:03:06,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:03:06,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:06" (1/1) ... [2022-11-02 21:03:06,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:06" (1/1) ... [2022-11-02 21:03:06,620 INFO L138 Inliner]: procedures = 26, calls = 454, calls flagged for inlining = 100, calls inlined = 144, statements flattened = 2362 [2022-11-02 21:03:06,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:06,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:03:06,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:03:06,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:03:06,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:06" (1/1) ... [2022-11-02 21:03:06,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:06" (1/1) ... [2022-11-02 21:03:06,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:06" (1/1) ... [2022-11-02 21:03:06,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:06" (1/1) ... [2022-11-02 21:03:06,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:06" (1/1) ... [2022-11-02 21:03:06,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:06" (1/1) ... [2022-11-02 21:03:06,791 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:06" (1/1) ... [2022-11-02 21:03:06,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:06" (1/1) ... [2022-11-02 21:03:06,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:03:06,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:03:06,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:03:06,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:03:06,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:06" (1/1) ... [2022-11-02 21:03:06,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:06,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:06,872 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:03:06,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:03:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:03:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:03:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:03:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:03:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 21:03:06,949 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 21:03:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 21:03:06,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 21:03:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 21:03:06,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 21:03:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:03:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 21:03:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 21:03:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 21:03:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:03:06,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:03:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:03:06,954 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 21:03:07,293 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:03:07,296 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:03:09,874 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:03:13,008 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:03:13,009 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-11-02 21:03:13,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:13 BoogieIcfgContainer [2022-11-02 21:03:13,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:03:13,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:03:13,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:03:13,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:03:13,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:03:05" (1/3) ... [2022-11-02 21:03:13,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf355ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:13, skipping insertion in model container [2022-11-02 21:03:13,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:06" (2/3) ... [2022-11-02 21:03:13,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf355ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:13, skipping insertion in model container [2022-11-02 21:03:13,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:13" (3/3) ... [2022-11-02 21:03:13,027 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-trans.wvr.c [2022-11-02 21:03:13,038 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:03:13,051 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:03:13,051 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:03:13,051 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:03:13,607 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 21:03:13,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 671 places, 740 transitions, 1504 flow [2022-11-02 21:03:14,162 INFO L130 PetriNetUnfolder]: 79/737 cut-off events. [2022-11-02 21:03:14,163 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 21:03:14,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 737 events. 79/737 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 771 event pairs, 0 based on Foata normal form. 0/657 useless extension candidates. Maximal degree in co-relation 662. Up to 7 conditions per place. [2022-11-02 21:03:14,170 INFO L82 GeneralOperation]: Start removeDead. Operand has 671 places, 740 transitions, 1504 flow [2022-11-02 21:03:14,181 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 657 places, 726 transitions, 1470 flow [2022-11-02 21:03:14,192 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:03:14,199 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;@25941e1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:03:14,200 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 21:03:14,490 INFO L130 PetriNetUnfolder]: 79/725 cut-off events. [2022-11-02 21:03:14,491 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 21:03:14,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:14,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:14,494 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 1 more)] === [2022-11-02 21:03:14,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:14,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1358083676, now seen corresponding path program 1 times [2022-11-02 21:03:14,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:14,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283855282] [2022-11-02 21:03:14,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:14,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:15,293 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 21:03:15,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:15,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283855282] [2022-11-02 21:03:15,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283855282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:15,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:15,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:03:15,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279139256] [2022-11-02 21:03:15,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:15,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:03:15,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:15,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:03:15,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:03:15,369 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 657 out of 740 [2022-11-02 21:03:15,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 726 transitions, 1470 flow. Second operand has 2 states, 2 states have (on average 666.0) internal successors, (1332), 2 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states 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 21:03:15,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:15,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 657 of 740 [2022-11-02 21:03:15,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:17,066 INFO L130 PetriNetUnfolder]: 675/1826 cut-off events. [2022-11-02 21:03:17,066 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2022-11-02 21:03:17,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2662 conditions, 1826 events. 675/1826 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6948 event pairs, 135 based on Foata normal form. 169/1748 useless extension candidates. Maximal degree in co-relation 1817. Up to 769 conditions per place. [2022-11-02 21:03:17,091 INFO L137 encePairwiseOnDemand]: 697/740 looper letters, 39 selfloop transitions, 0 changer transitions 25/683 dead transitions. [2022-11-02 21:03:17,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 658 places, 683 transitions, 1462 flow [2022-11-02 21:03:17,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:03:17,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 21:03:17,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1396 transitions. [2022-11-02 21:03:17,119 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9432432432432433 [2022-11-02 21:03:17,119 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1396 transitions. [2022-11-02 21:03:17,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1396 transitions. [2022-11-02 21:03:17,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:17,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1396 transitions. [2022-11-02 21:03:17,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 698.0) internal successors, (1396), 2 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states 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 21:03:17,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 740.0) internal successors, (2220), 3 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states 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 21:03:17,152 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 740.0) internal successors, (2220), 3 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states 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 21:03:17,154 INFO L175 Difference]: Start difference. First operand has 657 places, 726 transitions, 1470 flow. Second operand 2 states and 1396 transitions. [2022-11-02 21:03:17,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 658 places, 683 transitions, 1462 flow [2022-11-02 21:03:17,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 683 transitions, 1450 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-02 21:03:17,175 INFO L231 Difference]: Finished difference. Result has 652 places, 658 transitions, 1322 flow [2022-11-02 21:03:17,178 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=683, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1322, PETRI_PLACES=652, PETRI_TRANSITIONS=658} [2022-11-02 21:03:17,181 INFO L287 CegarLoopForPetriNet]: 657 programPoint places, -5 predicate places. [2022-11-02 21:03:17,182 INFO L495 AbstractCegarLoop]: Abstraction has has 652 places, 658 transitions, 1322 flow [2022-11-02 21:03:17,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 666.0) internal successors, (1332), 2 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states 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 21:03:17,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:17,183 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:17,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:03:17,184 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 1 more)] === [2022-11-02 21:03:17,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:17,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1018187689, now seen corresponding path program 1 times [2022-11-02 21:03:17,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:17,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504522850] [2022-11-02 21:03:17,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:17,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:17,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:17,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504522850] [2022-11-02 21:03:17,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504522850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:17,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:17,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:03:17,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218980209] [2022-11-02 21:03:17,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:17,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:03:17,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:17,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:03:17,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:17,900 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 513 out of 740 [2022-11-02 21:03:17,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 652 places, 658 transitions, 1322 flow. Second operand has 5 states, 5 states have (on average 534.0) internal successors, (2670), 5 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states 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 21:03:17,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:17,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 513 of 740 [2022-11-02 21:03:17,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:19,766 INFO L130 PetriNetUnfolder]: 675/1837 cut-off events. [2022-11-02 21:03:19,766 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-02 21:03:19,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2797 conditions, 1837 events. 675/1837 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6929 event pairs, 135 based on Foata normal form. 0/1615 useless extension candidates. Maximal degree in co-relation 2794. Up to 833 conditions per place. [2022-11-02 21:03:19,786 INFO L137 encePairwiseOnDemand]: 710/740 looper letters, 183 selfloop transitions, 24 changer transitions 0/682 dead transitions. [2022-11-02 21:03:19,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 682 transitions, 1784 flow [2022-11-02 21:03:19,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:03:19,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 21:03:19,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2778 transitions. [2022-11-02 21:03:19,795 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7508108108108108 [2022-11-02 21:03:19,795 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2778 transitions. [2022-11-02 21:03:19,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2778 transitions. [2022-11-02 21:03:19,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:19,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2778 transitions. [2022-11-02 21:03:19,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 555.6) internal successors, (2778), 5 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states 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 21:03:19,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 740.0) internal successors, (4440), 6 states have internal predecessors, (4440), 0 states have call successors, (0), 0 states 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 21:03:19,819 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 740.0) internal successors, (4440), 6 states have internal predecessors, (4440), 0 states have call successors, (0), 0 states 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 21:03:19,819 INFO L175 Difference]: Start difference. First operand has 652 places, 658 transitions, 1322 flow. Second operand 5 states and 2778 transitions. [2022-11-02 21:03:19,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 682 transitions, 1784 flow [2022-11-02 21:03:19,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 631 places, 682 transitions, 1784 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:03:19,837 INFO L231 Difference]: Finished difference. Result has 632 places, 664 transitions, 1418 flow [2022-11-02 21:03:19,839 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=634, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1418, PETRI_PLACES=632, PETRI_TRANSITIONS=664} [2022-11-02 21:03:19,839 INFO L287 CegarLoopForPetriNet]: 657 programPoint places, -25 predicate places. [2022-11-02 21:03:19,840 INFO L495 AbstractCegarLoop]: Abstraction has has 632 places, 664 transitions, 1418 flow [2022-11-02 21:03:19,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 534.0) internal successors, (2670), 5 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states 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 21:03:19,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:19,843 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:19,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:03:19,843 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 1 more)] === [2022-11-02 21:03:19,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:19,844 INFO L85 PathProgramCache]: Analyzing trace with hash 147791888, now seen corresponding path program 1 times [2022-11-02 21:03:19,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:19,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049575114] [2022-11-02 21:03:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:19,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:20,717 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:03:20,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:20,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049575114] [2022-11-02 21:03:20,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049575114] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:03:20,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756426789] [2022-11-02 21:03:20,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:20,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:20,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:20,728 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:20,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:03:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:21,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:03:21,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:21,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 21:03:21,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:21,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756426789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:21,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:03:21,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-02 21:03:21,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024918690] [2022-11-02 21:03:21,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:21,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:03:21,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:21,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:03:21,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:03:21,773 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 513 out of 740 [2022-11-02 21:03:21,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 632 places, 664 transitions, 1418 flow. Second operand has 5 states, 5 states have (on average 538.8) internal successors, (2694), 5 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states 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 21:03:21,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:21,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 513 of 740 [2022-11-02 21:03:21,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:23,431 INFO L130 PetriNetUnfolder]: 675/1873 cut-off events. [2022-11-02 21:03:23,431 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2022-11-02 21:03:23,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2901 conditions, 1873 events. 675/1873 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6878 event pairs, 135 based on Foata normal form. 0/1657 useless extension candidates. Maximal degree in co-relation 2896. Up to 864 conditions per place. [2022-11-02 21:03:23,450 INFO L137 encePairwiseOnDemand]: 708/740 looper letters, 187 selfloop transitions, 26 changer transitions 0/688 dead transitions. [2022-11-02 21:03:23,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 688 transitions, 1892 flow [2022-11-02 21:03:23,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:03:23,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:03:23,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3291 transitions. [2022-11-02 21:03:23,458 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7412162162162163 [2022-11-02 21:03:23,458 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3291 transitions. [2022-11-02 21:03:23,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3291 transitions. [2022-11-02 21:03:23,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:23,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3291 transitions. [2022-11-02 21:03:23,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 548.5) internal successors, (3291), 6 states have internal predecessors, (3291), 0 states have call successors, (0), 0 states 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 21:03:23,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 740.0) internal successors, (5180), 7 states have internal predecessors, (5180), 0 states have call successors, (0), 0 states 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 21:03:23,482 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 740.0) internal successors, (5180), 7 states have internal predecessors, (5180), 0 states have call successors, (0), 0 states 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 21:03:23,482 INFO L175 Difference]: Start difference. First operand has 632 places, 664 transitions, 1418 flow. Second operand 6 states and 3291 transitions. [2022-11-02 21:03:23,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 688 transitions, 1892 flow [2022-11-02 21:03:23,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 688 transitions, 1856 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 21:03:23,505 INFO L231 Difference]: Finished difference. Result has 635 places, 670 transitions, 1482 flow [2022-11-02 21:03:23,506 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=629, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1482, PETRI_PLACES=635, PETRI_TRANSITIONS=670} [2022-11-02 21:03:23,509 INFO L287 CegarLoopForPetriNet]: 657 programPoint places, -22 predicate places. [2022-11-02 21:03:23,509 INFO L495 AbstractCegarLoop]: Abstraction has has 635 places, 670 transitions, 1482 flow [2022-11-02 21:03:23,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 538.8) internal successors, (2694), 5 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states 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 21:03:23,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:23,512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:23,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:23,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:23,727 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 1 more)] === [2022-11-02 21:03:23,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:23,727 INFO L85 PathProgramCache]: Analyzing trace with hash -509397024, now seen corresponding path program 1 times [2022-11-02 21:03:23,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:23,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349034075] [2022-11-02 21:03:23,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:23,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:24,460 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 21:03:24,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:24,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349034075] [2022-11-02 21:03:24,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349034075] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:03:24,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719027372] [2022-11-02 21:03:24,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:24,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:24,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:24,465 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:24,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:03:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:25,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 1232 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:03:25,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:25,430 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 21:03:25,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:25,589 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 21:03:25,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719027372] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:25,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:03:25,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-02 21:03:25,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662866474] [2022-11-02 21:03:25,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:25,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 21:03:25,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:25,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 21:03:25,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:03:25,617 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 501 out of 740 [2022-11-02 21:03:25,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 635 places, 670 transitions, 1482 flow. Second operand has 17 states, 17 states have (on average 516.8235294117648) internal successors, (8786), 17 states have internal predecessors, (8786), 0 states have call successors, (0), 0 states 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 21:03:25,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:25,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 501 of 740 [2022-11-02 21:03:25,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:28,620 INFO L130 PetriNetUnfolder]: 675/1981 cut-off events. [2022-11-02 21:03:28,621 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-02 21:03:28,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3144 conditions, 1981 events. 675/1981 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6727 event pairs, 135 based on Foata normal form. 24/1795 useless extension candidates. Maximal degree in co-relation 3138. Up to 815 conditions per place. [2022-11-02 21:03:28,645 INFO L137 encePairwiseOnDemand]: 643/740 looper letters, 194 selfloop transitions, 133 changer transitions 0/790 dead transitions. [2022-11-02 21:03:28,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 790 transitions, 2400 flow [2022-11-02 21:03:28,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 21:03:28,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 21:03:28,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 10872 transitions. [2022-11-02 21:03:28,688 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6996138996138996 [2022-11-02 21:03:28,688 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 10872 transitions. [2022-11-02 21:03:28,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 10872 transitions. [2022-11-02 21:03:28,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:28,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 10872 transitions. [2022-11-02 21:03:28,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 517.7142857142857) internal successors, (10872), 21 states have internal predecessors, (10872), 0 states have call successors, (0), 0 states 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 21:03:28,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 740.0) internal successors, (16280), 22 states have internal predecessors, (16280), 0 states have call successors, (0), 0 states 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 21:03:28,804 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 740.0) internal successors, (16280), 22 states have internal predecessors, (16280), 0 states have call successors, (0), 0 states 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 21:03:28,804 INFO L175 Difference]: Start difference. First operand has 635 places, 670 transitions, 1482 flow. Second operand 21 states and 10872 transitions. [2022-11-02 21:03:28,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 790 transitions, 2400 flow [2022-11-02 21:03:28,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 651 places, 790 transitions, 2360 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 21:03:28,831 INFO L231 Difference]: Finished difference. Result has 657 places, 742 transitions, 2115 flow [2022-11-02 21:03:28,832 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2115, PETRI_PLACES=657, PETRI_TRANSITIONS=742} [2022-11-02 21:03:28,834 INFO L287 CegarLoopForPetriNet]: 657 programPoint places, 0 predicate places. [2022-11-02 21:03:28,835 INFO L495 AbstractCegarLoop]: Abstraction has has 657 places, 742 transitions, 2115 flow [2022-11-02 21:03:28,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 516.8235294117648) internal successors, (8786), 17 states have internal predecessors, (8786), 0 states have call successors, (0), 0 states 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 21:03:28,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:28,839 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:28,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:29,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:29,055 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 1 more)] === [2022-11-02 21:03:29,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:29,055 INFO L85 PathProgramCache]: Analyzing trace with hash 270034896, now seen corresponding path program 2 times [2022-11-02 21:03:29,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:29,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992204930] [2022-11-02 21:03:29,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:29,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:30,543 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-02 21:03:30,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:30,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992204930] [2022-11-02 21:03:30,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992204930] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:03:30,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924228568] [2022-11-02 21:03:30,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:03:30,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:30,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:30,551 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:30,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:03:31,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:03:31,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:03:31,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-02 21:03:31,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:31,702 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:03:31,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 52 [2022-11-02 21:03:31,810 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2022-11-02 21:03:31,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:31,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924228568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:31,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:03:31,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-02 21:03:31,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825684588] [2022-11-02 21:03:31,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:31,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:31,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:31,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:31,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:03:31,817 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 500 out of 740 [2022-11-02 21:03:31,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 742 transitions, 2115 flow. Second operand has 7 states, 7 states have (on average 520.1428571428571) internal successors, (3641), 7 states have internal predecessors, (3641), 0 states have call successors, (0), 0 states 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 21:03:31,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:31,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 500 of 740 [2022-11-02 21:03:31,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:34,852 INFO L130 PetriNetUnfolder]: 1623/3602 cut-off events. [2022-11-02 21:03:34,852 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2022-11-02 21:03:34,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6015 conditions, 3602 events. 1623/3602 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 17773 event pairs, 333 based on Foata normal form. 1/3167 useless extension candidates. Maximal degree in co-relation 6003. Up to 1624 conditions per place. [2022-11-02 21:03:34,893 INFO L137 encePairwiseOnDemand]: 721/740 looper letters, 202 selfloop transitions, 15 changer transitions 10/798 dead transitions. [2022-11-02 21:03:34,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 798 transitions, 2689 flow [2022-11-02 21:03:34,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:03:34,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 21:03:34,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3728 transitions. [2022-11-02 21:03:34,901 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7196911196911197 [2022-11-02 21:03:34,902 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3728 transitions. [2022-11-02 21:03:34,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3728 transitions. [2022-11-02 21:03:34,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:34,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3728 transitions. [2022-11-02 21:03:34,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 532.5714285714286) internal successors, (3728), 7 states have internal predecessors, (3728), 0 states have call successors, (0), 0 states 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 21:03:34,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 740.0) internal successors, (5920), 8 states have internal predecessors, (5920), 0 states have call successors, (0), 0 states 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 21:03:34,923 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 740.0) internal successors, (5920), 8 states have internal predecessors, (5920), 0 states have call successors, (0), 0 states 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 21:03:34,923 INFO L175 Difference]: Start difference. First operand has 657 places, 742 transitions, 2115 flow. Second operand 7 states and 3728 transitions. [2022-11-02 21:03:34,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 663 places, 798 transitions, 2689 flow [2022-11-02 21:03:34,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 657 places, 798 transitions, 2590 flow, removed 24 selfloop flow, removed 6 redundant places. [2022-11-02 21:03:34,943 INFO L231 Difference]: Finished difference. Result has 662 places, 754 transitions, 2130 flow [2022-11-02 21:03:34,944 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=2016, PETRI_DIFFERENCE_MINUEND_PLACES=651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=727, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2130, PETRI_PLACES=662, PETRI_TRANSITIONS=754} [2022-11-02 21:03:34,945 INFO L287 CegarLoopForPetriNet]: 657 programPoint places, 5 predicate places. [2022-11-02 21:03:34,945 INFO L495 AbstractCegarLoop]: Abstraction has has 662 places, 754 transitions, 2130 flow [2022-11-02 21:03:34,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 520.1428571428571) internal successors, (3641), 7 states have internal predecessors, (3641), 0 states have call successors, (0), 0 states 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 21:03:34,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:34,947 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:34,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:35,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:35,163 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 1 more)] === [2022-11-02 21:03:35,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:35,163 INFO L85 PathProgramCache]: Analyzing trace with hash 224574646, now seen corresponding path program 3 times [2022-11-02 21:03:35,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:35,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091996236] [2022-11-02 21:03:35,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:35,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:36,086 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-02 21:03:36,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:36,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091996236] [2022-11-02 21:03:36,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091996236] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:03:36,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783718509] [2022-11-02 21:03:36,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:03:36,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:36,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:36,089 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:36,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:03:36,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-02 21:03:36,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:03:36,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-02 21:03:36,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:46,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:46,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:46,841 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 21:03:46,842 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 29 [2022-11-02 21:03:46,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:46,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:46,986 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 21:03:46,986 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 29 [2022-11-02 21:03:47,314 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:03:47,314 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 52 [2022-11-02 21:03:47,453 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2022-11-02 21:03:47,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:47,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783718509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:47,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:03:47,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [11] total 30 [2022-11-02 21:03:47,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904358147] [2022-11-02 21:03:47,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:47,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 21:03:47,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:47,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 21:03:47,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2022-11-02 21:03:47,467 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 405 out of 740 [2022-11-02 21:03:47,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 662 places, 754 transitions, 2130 flow. Second operand has 21 states, 21 states have (on average 416.04761904761904) internal successors, (8737), 21 states have internal predecessors, (8737), 0 states have call successors, (0), 0 states 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 21:03:47,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:47,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 405 of 740 [2022-11-02 21:03:47,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:55,177 INFO L130 PetriNetUnfolder]: 2581/5329 cut-off events. [2022-11-02 21:03:55,177 INFO L131 PetriNetUnfolder]: For 2134/2210 co-relation queries the response was YES. [2022-11-02 21:03:55,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10759 conditions, 5329 events. 2581/5329 cut-off events. For 2134/2210 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 30528 event pairs, 429 based on Foata normal form. 1/4849 useless extension candidates. Maximal degree in co-relation 10742. Up to 1581 conditions per place. [2022-11-02 21:03:55,244 INFO L137 encePairwiseOnDemand]: 649/740 looper letters, 304 selfloop transitions, 99 changer transitions 10/893 dead transitions. [2022-11-02 21:03:55,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 893 transitions, 3430 flow [2022-11-02 21:03:55,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-02 21:03:55,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-02 21:03:55,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 12135 transitions. [2022-11-02 21:03:55,269 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5654706430568499 [2022-11-02 21:03:55,269 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 12135 transitions. [2022-11-02 21:03:55,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 12135 transitions. [2022-11-02 21:03:55,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:55,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 12135 transitions. [2022-11-02 21:03:55,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 418.44827586206895) internal successors, (12135), 29 states have internal predecessors, (12135), 0 states have call successors, (0), 0 states 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 21:03:55,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 740.0) internal successors, (22200), 30 states have internal predecessors, (22200), 0 states have call successors, (0), 0 states 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 21:03:55,340 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 740.0) internal successors, (22200), 30 states have internal predecessors, (22200), 0 states have call successors, (0), 0 states 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 21:03:55,340 INFO L175 Difference]: Start difference. First operand has 662 places, 754 transitions, 2130 flow. Second operand 29 states and 12135 transitions. [2022-11-02 21:03:55,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 687 places, 893 transitions, 3430 flow [2022-11-02 21:03:55,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 683 places, 893 transitions, 3387 flow, removed 17 selfloop flow, removed 4 redundant places. [2022-11-02 21:03:55,373 INFO L231 Difference]: Finished difference. Result has 690 places, 768 transitions, 2404 flow [2022-11-02 21:03:55,375 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=2121, PETRI_DIFFERENCE_MINUEND_PLACES=655, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2404, PETRI_PLACES=690, PETRI_TRANSITIONS=768} [2022-11-02 21:03:55,375 INFO L287 CegarLoopForPetriNet]: 657 programPoint places, 33 predicate places. [2022-11-02 21:03:55,376 INFO L495 AbstractCegarLoop]: Abstraction has has 690 places, 768 transitions, 2404 flow [2022-11-02 21:03:55,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 416.04761904761904) internal successors, (8737), 21 states have internal predecessors, (8737), 0 states have call successors, (0), 0 states 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 21:03:55,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:55,380 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:55,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:55,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:55,606 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 1 more)] === [2022-11-02 21:03:55,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:55,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1537743630, now seen corresponding path program 4 times [2022-11-02 21:03:55,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:55,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026368943] [2022-11-02 21:03:55,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:55,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:56,545 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-02 21:03:56,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:56,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026368943] [2022-11-02 21:03:56,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026368943] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:03:56,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930994235] [2022-11-02 21:03:56,547 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:03:56,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:56,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:56,548 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:56,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:03:57,273 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:03:57,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:03:57,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:03:57,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:57,499 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-02 21:03:57,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-02 21:03:57,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930994235] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:57,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:03:57,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-02 21:03:57,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164917168] [2022-11-02 21:03:57,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:57,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 21:03:57,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:57,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 21:03:57,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-02 21:03:57,685 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 501 out of 740 [2022-11-02 21:03:57,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 690 places, 768 transitions, 2404 flow. Second operand has 22 states, 22 states have (on average 510.3181818181818) internal successors, (11227), 22 states have internal predecessors, (11227), 0 states have call successors, (0), 0 states 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 21:03:57,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:57,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 501 of 740 [2022-11-02 21:03:57,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:01,326 INFO L130 PetriNetUnfolder]: 1220/3333 cut-off events. [2022-11-02 21:04:01,326 INFO L131 PetriNetUnfolder]: For 1919/2111 co-relation queries the response was YES. [2022-11-02 21:04:01,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6984 conditions, 3333 events. 1220/3333 cut-off events. For 1919/2111 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16475 event pairs, 306 based on Foata normal form. 18/3078 useless extension candidates. Maximal degree in co-relation 6963. Up to 1539 conditions per place. [2022-11-02 21:04:01,362 INFO L137 encePairwiseOnDemand]: 643/740 looper letters, 255 selfloop transitions, 187 changer transitions 0/906 dead transitions. [2022-11-02 21:04:01,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 716 places, 906 transitions, 3828 flow [2022-11-02 21:04:01,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 21:04:01,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-02 21:04:01,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 15465 transitions. [2022-11-02 21:04:01,389 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6966216216216217 [2022-11-02 21:04:01,389 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 15465 transitions. [2022-11-02 21:04:01,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 15465 transitions. [2022-11-02 21:04:01,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:01,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 15465 transitions. [2022-11-02 21:04:01,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 515.5) internal successors, (15465), 30 states have internal predecessors, (15465), 0 states have call successors, (0), 0 states 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 21:04:01,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 740.0) internal successors, (22940), 31 states have internal predecessors, (22940), 0 states have call successors, (0), 0 states 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 21:04:01,455 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 740.0) internal successors, (22940), 31 states have internal predecessors, (22940), 0 states have call successors, (0), 0 states 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 21:04:01,455 INFO L175 Difference]: Start difference. First operand has 690 places, 768 transitions, 2404 flow. Second operand 30 states and 15465 transitions. [2022-11-02 21:04:01,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 716 places, 906 transitions, 3828 flow [2022-11-02 21:04:01,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 694 places, 906 transitions, 3688 flow, removed 3 selfloop flow, removed 22 redundant places. [2022-11-02 21:04:01,489 INFO L231 Difference]: Finished difference. Result has 701 places, 834 transitions, 3201 flow [2022-11-02 21:04:01,490 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=2264, PETRI_DIFFERENCE_MINUEND_PLACES=665, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3201, PETRI_PLACES=701, PETRI_TRANSITIONS=834} [2022-11-02 21:04:01,491 INFO L287 CegarLoopForPetriNet]: 657 programPoint places, 44 predicate places. [2022-11-02 21:04:01,492 INFO L495 AbstractCegarLoop]: Abstraction has has 701 places, 834 transitions, 3201 flow [2022-11-02 21:04:01,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 510.3181818181818) internal successors, (11227), 22 states have internal predecessors, (11227), 0 states have call successors, (0), 0 states 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 21:04:01,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:01,496 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:01,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:01,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:01,715 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 1 more)] === [2022-11-02 21:04:01,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:01,715 INFO L85 PathProgramCache]: Analyzing trace with hash 868674741, now seen corresponding path program 5 times [2022-11-02 21:04:01,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:01,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903358069] [2022-11-02 21:04:01,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:01,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:03,175 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2022-11-02 21:04:03,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:03,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903358069] [2022-11-02 21:04:03,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903358069] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:03,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42636705] [2022-11-02 21:04:03,176 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:04:03,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:03,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:03,178 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:03,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d316f035-c5c8-4972-a04d-472a6023c2dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process