./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-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_9b53c1db-4396-4929-a1d7-83866ada5494/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b53c1db-4396-4929-a1d7-83866ada5494/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_9b53c1db-4396-4929-a1d7-83866ada5494/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b53c1db-4396-4929-a1d7-83866ada5494/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b53c1db-4396-4929-a1d7-83866ada5494/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_9b53c1db-4396-4929-a1d7-83866ada5494/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 0b48bde914fb7ebeda4cbd6fd329f7fd1281e3c3e233b6f5149c7b66a2f709ab --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:50:37,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:50:37,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:50:37,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:50:37,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:50:37,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:50:37,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:50:37,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:50:37,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:50:37,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:50:37,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:50:37,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:50:37,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:50:37,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:50:37,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:50:37,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:50:37,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:50:37,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:50:37,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:50:37,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:50:37,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:50:37,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:50:37,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:50:37,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:50:37,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:50:37,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:50:37,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:50:37,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:50:37,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:50:37,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:50:37,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:50:37,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:50:37,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:50:37,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:50:37,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:50:37,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:50:37,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:50:37,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:50:37,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:50:37,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:50:37,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:50:37,728 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b53c1db-4396-4929-a1d7-83866ada5494/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:50:37,750 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:50:37,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:50:37,750 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:50:37,750 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:50:37,751 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:50:37,751 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:50:37,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:50:37,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:50:37,752 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:50:37,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:50:37,753 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:50:37,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:50:37,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:50:37,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:50:37,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:50:37,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:50:37,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:50:37,754 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:50:37,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:50:37,754 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:50:37,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:50:37,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:50:37,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:50:37,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:50:37,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:50:37,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:50:37,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:50:37,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:50:37,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:50:37,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:50:37,756 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:50:37,756 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:50:37,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:50:37,757 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_9b53c1db-4396-4929-a1d7-83866ada5494/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b53c1db-4396-4929-a1d7-83866ada5494/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b48bde914fb7ebeda4cbd6fd329f7fd1281e3c3e233b6f5149c7b66a2f709ab [2022-11-02 20:50:38,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:50:38,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:50:38,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:50:38,110 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:50:38,111 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:50:38,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b53c1db-4396-4929-a1d7-83866ada5494/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c [2022-11-02 20:50:38,191 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b53c1db-4396-4929-a1d7-83866ada5494/bin/uautomizer-Dbtcem3rbc/data/c4291cbbf/5be30c79101948e585e13d801b83aeb7/FLAG9e64b5562 [2022-11-02 20:50:38,644 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:50:38,645 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b53c1db-4396-4929-a1d7-83866ada5494/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c [2022-11-02 20:50:38,658 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b53c1db-4396-4929-a1d7-83866ada5494/bin/uautomizer-Dbtcem3rbc/data/c4291cbbf/5be30c79101948e585e13d801b83aeb7/FLAG9e64b5562 [2022-11-02 20:50:39,010 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b53c1db-4396-4929-a1d7-83866ada5494/bin/uautomizer-Dbtcem3rbc/data/c4291cbbf/5be30c79101948e585e13d801b83aeb7 [2022-11-02 20:50:39,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:50:39,014 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:50:39,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:50:39,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:50:39,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:50:39,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:50:39" (1/1) ... [2022-11-02 20:50:39,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@360254ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:39, skipping insertion in model container [2022-11-02 20:50:39,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:50:39" (1/1) ... [2022-11-02 20:50:39,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:50:39,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:50:39,285 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_9b53c1db-4396-4929-a1d7-83866ada5494/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c[2514,2527] [2022-11-02 20:50:39,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:50:39,300 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:50:39,323 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_9b53c1db-4396-4929-a1d7-83866ada5494/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c[2514,2527] [2022-11-02 20:50:39,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:50:39,338 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:50:39,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:39 WrapperNode [2022-11-02 20:50:39,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:50:39,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:50:39,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:50:39,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:50:39,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:39" (1/1) ... [2022-11-02 20:50:39,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:39" (1/1) ... [2022-11-02 20:50:39,417 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 175 [2022-11-02 20:50:39,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:50:39,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:50:39,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:50:39,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:50:39,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:39" (1/1) ... [2022-11-02 20:50:39,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:39" (1/1) ... [2022-11-02 20:50:39,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:39" (1/1) ... [2022-11-02 20:50:39,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:39" (1/1) ... [2022-11-02 20:50:39,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:39" (1/1) ... [2022-11-02 20:50:39,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:39" (1/1) ... [2022-11-02 20:50:39,455 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:39" (1/1) ... [2022-11-02 20:50:39,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:39" (1/1) ... [2022-11-02 20:50:39,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:50:39,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:50:39,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:50:39,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:50:39,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:39" (1/1) ... [2022-11-02 20:50:39,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:50:39,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b53c1db-4396-4929-a1d7-83866ada5494/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:50:39,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b53c1db-4396-4929-a1d7-83866ada5494/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:50:39,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b53c1db-4396-4929-a1d7-83866ada5494/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:50:39,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:50:39,554 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:50:39,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:50:39,555 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:50:39,555 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:50:39,555 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 20:50:39,555 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 20:50:39,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:50:39,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:50:39,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:50:39,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:50:39,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:50:39,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:50:39,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:50:39,560 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:50:39,723 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:50:39,733 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:50:40,175 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:50:40,185 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:50:40,185 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:50:40,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:50:40 BoogieIcfgContainer [2022-11-02 20:50:40,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:50:40,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:50:40,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:50:40,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:50:40,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:50:39" (1/3) ... [2022-11-02 20:50:40,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb3e73c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:50:40, skipping insertion in model container [2022-11-02 20:50:40,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:39" (2/3) ... [2022-11-02 20:50:40,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb3e73c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:50:40, skipping insertion in model container [2022-11-02 20:50:40,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:50:40" (3/3) ... [2022-11-02 20:50:40,212 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-trans.wvr.c [2022-11-02 20:50:40,225 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:50:40,236 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:50:40,236 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:50:40,236 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:50:40,351 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:50:40,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 227 transitions, 478 flow [2022-11-02 20:50:40,524 INFO L130 PetriNetUnfolder]: 16/224 cut-off events. [2022-11-02 20:50:40,528 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:50:40,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 224 events. 16/224 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 505 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2022-11-02 20:50:40,538 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 227 transitions, 478 flow [2022-11-02 20:50:40,556 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 213 transitions, 444 flow [2022-11-02 20:50:40,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:50:40,581 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;@554e3688, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:50:40,581 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:50:40,683 INFO L130 PetriNetUnfolder]: 16/212 cut-off events. [2022-11-02 20:50:40,684 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:50:40,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:40,685 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] [2022-11-02 20:50:40,686 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 20:50:40,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:40,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1080413820, now seen corresponding path program 1 times [2022-11-02 20:50:40,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:40,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615437780] [2022-11-02 20:50:40,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:40,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:41,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:41,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615437780] [2022-11-02 20:50:41,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615437780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:41,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:41,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:50:41,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064634459] [2022-11-02 20:50:41,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:41,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:50:41,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:41,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:50:41,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:41,140 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 227 [2022-11-02 20:50:41,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 213 transitions, 444 flow. Second operand has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:41,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:41,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 227 [2022-11-02 20:50:41,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:41,374 INFO L130 PetriNetUnfolder]: 33/580 cut-off events. [2022-11-02 20:50:41,375 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-11-02 20:50:41,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 580 events. 33/580 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3064 event pairs, 7 based on Foata normal form. 34/559 useless extension candidates. Maximal degree in co-relation 435. Up to 23 conditions per place. [2022-11-02 20:50:41,389 INFO L137 encePairwiseOnDemand]: 216/227 looper letters, 17 selfloop transitions, 2 changer transitions 1/213 dead transitions. [2022-11-02 20:50:41,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 213 transitions, 497 flow [2022-11-02 20:50:41,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:50:41,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:50:41,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 652 transitions. [2022-11-02 20:50:41,413 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9574155653450808 [2022-11-02 20:50:41,414 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 652 transitions. [2022-11-02 20:50:41,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 652 transitions. [2022-11-02 20:50:41,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:41,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 652 transitions. [2022-11-02 20:50:41,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:41,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:41,446 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:41,448 INFO L175 Difference]: Start difference. First operand has 207 places, 213 transitions, 444 flow. Second operand 3 states and 652 transitions. [2022-11-02 20:50:41,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 213 transitions, 497 flow [2022-11-02 20:50:41,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 213 transitions, 475 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-02 20:50:41,463 INFO L231 Difference]: Finished difference. Result has 205 places, 207 transitions, 436 flow [2022-11-02 20:50:41,465 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=436, PETRI_PLACES=205, PETRI_TRANSITIONS=207} [2022-11-02 20:50:41,475 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, -2 predicate places. [2022-11-02 20:50:41,475 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 207 transitions, 436 flow [2022-11-02 20:50:41,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:41,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:41,477 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] [2022-11-02 20:50:41,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:50:41,478 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 20:50:41,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:41,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1524013954, now seen corresponding path program 1 times [2022-11-02 20:50:41,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:41,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968777097] [2022-11-02 20:50:41,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:41,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:41,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:41,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968777097] [2022-11-02 20:50:41,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968777097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:41,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:41,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:50:41,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723859264] [2022-11-02 20:50:41,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:41,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:50:41,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:41,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:50:41,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:41,711 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 227 [2022-11-02 20:50:41,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 207 transitions, 436 flow. Second operand has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:41,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:41,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 227 [2022-11-02 20:50:41,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:41,846 INFO L130 PetriNetUnfolder]: 27/494 cut-off events. [2022-11-02 20:50:41,846 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-11-02 20:50:41,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 494 events. 27/494 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2295 event pairs, 6 based on Foata normal form. 4/459 useless extension candidates. Maximal degree in co-relation 308. Up to 20 conditions per place. [2022-11-02 20:50:41,853 INFO L137 encePairwiseOnDemand]: 221/227 looper letters, 17 selfloop transitions, 4 changer transitions 0/214 dead transitions. [2022-11-02 20:50:41,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 214 transitions, 501 flow [2022-11-02 20:50:41,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:50:41,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:50:41,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 642 transitions. [2022-11-02 20:50:41,857 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9427312775330396 [2022-11-02 20:50:41,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 642 transitions. [2022-11-02 20:50:41,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 642 transitions. [2022-11-02 20:50:41,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:41,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 642 transitions. [2022-11-02 20:50:41,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:41,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:41,863 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:41,863 INFO L175 Difference]: Start difference. First operand has 205 places, 207 transitions, 436 flow. Second operand 3 states and 642 transitions. [2022-11-02 20:50:41,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 214 transitions, 501 flow [2022-11-02 20:50:41,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 214 transitions, 499 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:50:41,873 INFO L231 Difference]: Finished difference. Result has 207 places, 209 transitions, 466 flow [2022-11-02 20:50:41,874 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=466, PETRI_PLACES=207, PETRI_TRANSITIONS=209} [2022-11-02 20:50:41,875 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 0 predicate places. [2022-11-02 20:50:41,875 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 209 transitions, 466 flow [2022-11-02 20:50:41,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:41,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:41,877 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] [2022-11-02 20:50:41,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:50:41,878 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 20:50:41,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:41,880 INFO L85 PathProgramCache]: Analyzing trace with hash -2126313420, now seen corresponding path program 1 times [2022-11-02 20:50:41,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:41,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179005097] [2022-11-02 20:50:41,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:41,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:42,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:42,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:42,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179005097] [2022-11-02 20:50:42,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179005097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:42,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:42,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:50:42,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751652291] [2022-11-02 20:50:42,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:42,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:50:42,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:42,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:50:42,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:42,022 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 227 [2022-11-02 20:50:42,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 209 transitions, 466 flow. Second operand has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:42,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:42,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 227 [2022-11-02 20:50:42,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:42,213 INFO L130 PetriNetUnfolder]: 61/941 cut-off events. [2022-11-02 20:50:42,213 INFO L131 PetriNetUnfolder]: For 35/42 co-relation queries the response was YES. [2022-11-02 20:50:42,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1080 conditions, 941 events. 61/941 cut-off events. For 35/42 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6601 event pairs, 14 based on Foata normal form. 0/854 useless extension candidates. Maximal degree in co-relation 662. Up to 54 conditions per place. [2022-11-02 20:50:42,225 INFO L137 encePairwiseOnDemand]: 219/227 looper letters, 17 selfloop transitions, 5 changer transitions 0/217 dead transitions. [2022-11-02 20:50:42,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 217 transitions, 531 flow [2022-11-02 20:50:42,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:50:42,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:50:42,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 640 transitions. [2022-11-02 20:50:42,228 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9397944199706314 [2022-11-02 20:50:42,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 640 transitions. [2022-11-02 20:50:42,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 640 transitions. [2022-11-02 20:50:42,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:42,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 640 transitions. [2022-11-02 20:50:42,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:42,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:42,234 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:42,234 INFO L175 Difference]: Start difference. First operand has 207 places, 209 transitions, 466 flow. Second operand 3 states and 640 transitions. [2022-11-02 20:50:42,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 217 transitions, 531 flow [2022-11-02 20:50:42,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 217 transitions, 519 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-02 20:50:42,240 INFO L231 Difference]: Finished difference. Result has 209 places, 212 transitions, 492 flow [2022-11-02 20:50:42,241 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=209, PETRI_TRANSITIONS=212} [2022-11-02 20:50:42,242 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 2 predicate places. [2022-11-02 20:50:42,242 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 212 transitions, 492 flow [2022-11-02 20:50:42,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:42,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:42,243 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] [2022-11-02 20:50:42,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:50:42,244 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 20:50:42,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:42,244 INFO L85 PathProgramCache]: Analyzing trace with hash -899667582, now seen corresponding path program 2 times [2022-11-02 20:50:42,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:42,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054331119] [2022-11-02 20:50:42,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:42,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:42,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:42,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054331119] [2022-11-02 20:50:42,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054331119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:42,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:42,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:50:42,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600867787] [2022-11-02 20:50:42,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:42,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:50:42,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:42,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:50:42,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:42,330 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 227 [2022-11-02 20:50:42,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 212 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:42,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:42,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 227 [2022-11-02 20:50:42,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:42,518 INFO L130 PetriNetUnfolder]: 55/894 cut-off events. [2022-11-02 20:50:42,518 INFO L131 PetriNetUnfolder]: For 84/93 co-relation queries the response was YES. [2022-11-02 20:50:42,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1063 conditions, 894 events. 55/894 cut-off events. For 84/93 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6059 event pairs, 13 based on Foata normal form. 10/836 useless extension candidates. Maximal degree in co-relation 744. Up to 39 conditions per place. [2022-11-02 20:50:42,530 INFO L137 encePairwiseOnDemand]: 221/227 looper letters, 22 selfloop transitions, 3 changer transitions 0/220 dead transitions. [2022-11-02 20:50:42,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 220 transitions, 569 flow [2022-11-02 20:50:42,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:50:42,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:50:42,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 640 transitions. [2022-11-02 20:50:42,533 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9397944199706314 [2022-11-02 20:50:42,533 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 640 transitions. [2022-11-02 20:50:42,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 640 transitions. [2022-11-02 20:50:42,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:42,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 640 transitions. [2022-11-02 20:50:42,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:42,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:42,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:42,542 INFO L175 Difference]: Start difference. First operand has 209 places, 212 transitions, 492 flow. Second operand 3 states and 640 transitions. [2022-11-02 20:50:42,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 220 transitions, 569 flow [2022-11-02 20:50:42,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 220 transitions, 559 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:50:42,549 INFO L231 Difference]: Finished difference. Result has 211 places, 215 transitions, 518 flow [2022-11-02 20:50:42,550 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=518, PETRI_PLACES=211, PETRI_TRANSITIONS=215} [2022-11-02 20:50:42,552 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 4 predicate places. [2022-11-02 20:50:42,552 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 215 transitions, 518 flow [2022-11-02 20:50:42,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:42,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:42,559 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] [2022-11-02 20:50:42,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:50:42,569 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 20:50:42,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:42,570 INFO L85 PathProgramCache]: Analyzing trace with hash 826390254, now seen corresponding path program 1 times [2022-11-02 20:50:42,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:42,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564553263] [2022-11-02 20:50:42,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:42,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:42,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:42,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:42,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564553263] [2022-11-02 20:50:42,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564553263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:42,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:42,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:50:42,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011807616] [2022-11-02 20:50:42,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:42,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:50:42,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:42,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:50:42,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:50:42,949 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 227 [2022-11-02 20:50:42,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 215 transitions, 518 flow. Second operand has 7 states, 7 states have (on average 202.28571428571428) internal successors, (1416), 7 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:42,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:42,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 227 [2022-11-02 20:50:42,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:43,209 INFO L130 PetriNetUnfolder]: 83/685 cut-off events. [2022-11-02 20:50:43,209 INFO L131 PetriNetUnfolder]: For 64/99 co-relation queries the response was YES. [2022-11-02 20:50:43,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 685 events. 83/685 cut-off events. For 64/99 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4758 event pairs, 20 based on Foata normal form. 3/644 useless extension candidates. Maximal degree in co-relation 657. Up to 103 conditions per place. [2022-11-02 20:50:43,222 INFO L137 encePairwiseOnDemand]: 218/227 looper letters, 23 selfloop transitions, 6 changer transitions 4/230 dead transitions. [2022-11-02 20:50:43,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 230 transitions, 622 flow [2022-11-02 20:50:43,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:50:43,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:50:43,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1434 transitions. [2022-11-02 20:50:43,226 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9024543738200126 [2022-11-02 20:50:43,226 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1434 transitions. [2022-11-02 20:50:43,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1434 transitions. [2022-11-02 20:50:43,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:43,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1434 transitions. [2022-11-02 20:50:43,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:43,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 227.0) internal successors, (1816), 8 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:43,236 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 227.0) internal successors, (1816), 8 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:43,236 INFO L175 Difference]: Start difference. First operand has 211 places, 215 transitions, 518 flow. Second operand 7 states and 1434 transitions. [2022-11-02 20:50:43,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 230 transitions, 622 flow [2022-11-02 20:50:43,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 230 transitions, 613 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-02 20:50:43,244 INFO L231 Difference]: Finished difference. Result has 221 places, 219 transitions, 553 flow [2022-11-02 20:50:43,245 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=553, PETRI_PLACES=221, PETRI_TRANSITIONS=219} [2022-11-02 20:50:43,248 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 14 predicate places. [2022-11-02 20:50:43,248 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 219 transitions, 553 flow [2022-11-02 20:50:43,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 202.28571428571428) internal successors, (1416), 7 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:43,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:43,251 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] [2022-11-02 20:50:43,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:50:43,252 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 20:50:43,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:43,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1537818566, now seen corresponding path program 1 times [2022-11-02 20:50:43,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:43,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618409214] [2022-11-02 20:50:43,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:43,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:43,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:43,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:43,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618409214] [2022-11-02 20:50:43,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618409214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:43,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:43,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:50:43,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516054450] [2022-11-02 20:50:43,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:43,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:50:43,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:43,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:50:43,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:43,344 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 227 [2022-11-02 20:50:43,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 219 transitions, 553 flow. Second operand has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:43,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:43,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 227 [2022-11-02 20:50:43,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:43,759 INFO L130 PetriNetUnfolder]: 100/2097 cut-off events. [2022-11-02 20:50:43,760 INFO L131 PetriNetUnfolder]: For 112/161 co-relation queries the response was YES. [2022-11-02 20:50:43,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2771 conditions, 2097 events. 100/2097 cut-off events. For 112/161 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 19149 event pairs, 42 based on Foata normal form. 2/1933 useless extension candidates. Maximal degree in co-relation 2727. Up to 149 conditions per place. [2022-11-02 20:50:43,784 INFO L137 encePairwiseOnDemand]: 217/227 looper letters, 18 selfloop transitions, 6 changer transitions 0/227 dead transitions. [2022-11-02 20:50:43,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 227 transitions, 621 flow [2022-11-02 20:50:43,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:50:43,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:50:43,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 637 transitions. [2022-11-02 20:50:43,787 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9353891336270191 [2022-11-02 20:50:43,788 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 637 transitions. [2022-11-02 20:50:43,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 637 transitions. [2022-11-02 20:50:43,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:43,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 637 transitions. [2022-11-02 20:50:43,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:43,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:43,793 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:43,793 INFO L175 Difference]: Start difference. First operand has 221 places, 219 transitions, 553 flow. Second operand 3 states and 637 transitions. [2022-11-02 20:50:43,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 227 transitions, 621 flow [2022-11-02 20:50:43,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 227 transitions, 615 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-02 20:50:43,804 INFO L231 Difference]: Finished difference. Result has 220 places, 223 transitions, 595 flow [2022-11-02 20:50:43,804 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=595, PETRI_PLACES=220, PETRI_TRANSITIONS=223} [2022-11-02 20:50:43,807 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 13 predicate places. [2022-11-02 20:50:43,808 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 223 transitions, 595 flow [2022-11-02 20:50:43,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:43,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:43,809 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] [2022-11-02 20:50:43,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:50:43,809 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 20:50:43,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:43,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1297525812, now seen corresponding path program 1 times [2022-11-02 20:50:43,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:43,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328540078] [2022-11-02 20:50:43,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:43,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:43,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:43,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:43,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328540078] [2022-11-02 20:50:43,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328540078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:43,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:43,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:50:43,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882133936] [2022-11-02 20:50:43,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:43,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:50:43,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:43,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:50:43,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:43,911 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 227 [2022-11-02 20:50:43,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 223 transitions, 595 flow. Second operand has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:43,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:43,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 227 [2022-11-02 20:50:43,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:44,220 INFO L130 PetriNetUnfolder]: 82/1723 cut-off events. [2022-11-02 20:50:44,220 INFO L131 PetriNetUnfolder]: For 227/272 co-relation queries the response was YES. [2022-11-02 20:50:44,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2286 conditions, 1723 events. 82/1723 cut-off events. For 227/272 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 14170 event pairs, 26 based on Foata normal form. 28/1643 useless extension candidates. Maximal degree in co-relation 1697. Up to 100 conditions per place. [2022-11-02 20:50:44,237 INFO L137 encePairwiseOnDemand]: 219/227 looper letters, 24 selfloop transitions, 4 changer transitions 0/231 dead transitions. [2022-11-02 20:50:44,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 231 transitions, 679 flow [2022-11-02 20:50:44,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:50:44,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:50:44,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 637 transitions. [2022-11-02 20:50:44,240 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9353891336270191 [2022-11-02 20:50:44,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 637 transitions. [2022-11-02 20:50:44,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 637 transitions. [2022-11-02 20:50:44,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:44,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 637 transitions. [2022-11-02 20:50:44,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:44,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:44,245 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:44,245 INFO L175 Difference]: Start difference. First operand has 220 places, 223 transitions, 595 flow. Second operand 3 states and 637 transitions. [2022-11-02 20:50:44,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 231 transitions, 679 flow [2022-11-02 20:50:44,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 231 transitions, 667 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:50:44,253 INFO L231 Difference]: Finished difference. Result has 222 places, 227 transitions, 631 flow [2022-11-02 20:50:44,253 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=631, PETRI_PLACES=222, PETRI_TRANSITIONS=227} [2022-11-02 20:50:44,254 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 15 predicate places. [2022-11-02 20:50:44,254 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 227 transitions, 631 flow [2022-11-02 20:50:44,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:44,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:44,255 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] [2022-11-02 20:50:44,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:50:44,256 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 20:50:44,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:44,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2144030332, now seen corresponding path program 1 times [2022-11-02 20:50:44,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:44,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996389435] [2022-11-02 20:50:44,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:44,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:44,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:44,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:44,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996389435] [2022-11-02 20:50:44,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996389435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:44,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:44,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:50:44,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280796468] [2022-11-02 20:50:44,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:44,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:50:44,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:44,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:50:44,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:50:44,506 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 227 [2022-11-02 20:50:44,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 227 transitions, 631 flow. Second operand has 7 states, 7 states have (on average 202.28571428571428) internal successors, (1416), 7 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:44,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:44,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 227 [2022-11-02 20:50:44,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:44,855 INFO L130 PetriNetUnfolder]: 138/1285 cut-off events. [2022-11-02 20:50:44,856 INFO L131 PetriNetUnfolder]: For 197/385 co-relation queries the response was YES. [2022-11-02 20:50:44,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1935 conditions, 1285 events. 138/1285 cut-off events. For 197/385 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 11070 event pairs, 78 based on Foata normal form. 2/1190 useless extension candidates. Maximal degree in co-relation 1504. Up to 299 conditions per place. [2022-11-02 20:50:44,871 INFO L137 encePairwiseOnDemand]: 219/227 looper letters, 17 selfloop transitions, 5 changer transitions 17/245 dead transitions. [2022-11-02 20:50:44,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 245 transitions, 752 flow [2022-11-02 20:50:44,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:50:44,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:50:44,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1837 transitions. [2022-11-02 20:50:44,877 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8991678903573177 [2022-11-02 20:50:44,877 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1837 transitions. [2022-11-02 20:50:44,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1837 transitions. [2022-11-02 20:50:44,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:44,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1837 transitions. [2022-11-02 20:50:44,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 204.11111111111111) internal successors, (1837), 9 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:44,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 227.0) internal successors, (2270), 10 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:44,890 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 227.0) internal successors, (2270), 10 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:44,890 INFO L175 Difference]: Start difference. First operand has 222 places, 227 transitions, 631 flow. Second operand 9 states and 1837 transitions. [2022-11-02 20:50:44,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 245 transitions, 752 flow [2022-11-02 20:50:44,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 245 transitions, 740 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-02 20:50:44,897 INFO L231 Difference]: Finished difference. Result has 236 places, 228 transitions, 648 flow [2022-11-02 20:50:44,898 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=648, PETRI_PLACES=236, PETRI_TRANSITIONS=228} [2022-11-02 20:50:44,900 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 29 predicate places. [2022-11-02 20:50:44,900 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 228 transitions, 648 flow [2022-11-02 20:50:44,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 202.28571428571428) internal successors, (1416), 7 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:44,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:44,902 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] [2022-11-02 20:50:44,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:50:44,902 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:50:44,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:44,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1488079960, now seen corresponding path program 1 times [2022-11-02 20:50:44,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:44,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913473130] [2022-11-02 20:50:44,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:44,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:45,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:45,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:45,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913473130] [2022-11-02 20:50:45,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913473130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:45,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:45,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:50:45,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103602745] [2022-11-02 20:50:45,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:45,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:50:45,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:45,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:50:45,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:50:45,221 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2022-11-02 20:50:45,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 228 transitions, 648 flow. Second operand has 8 states, 8 states have (on average 198.5) internal successors, (1588), 8 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:45,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:45,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2022-11-02 20:50:45,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:45,855 INFO L130 PetriNetUnfolder]: 443/2624 cut-off events. [2022-11-02 20:50:45,855 INFO L131 PetriNetUnfolder]: For 478/599 co-relation queries the response was YES. [2022-11-02 20:50:45,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4572 conditions, 2624 events. 443/2624 cut-off events. For 478/599 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 25049 event pairs, 285 based on Foata normal form. 19/2408 useless extension candidates. Maximal degree in co-relation 4543. Up to 592 conditions per place. [2022-11-02 20:50:45,880 INFO L137 encePairwiseOnDemand]: 217/227 looper letters, 33 selfloop transitions, 7 changer transitions 18/257 dead transitions. [2022-11-02 20:50:45,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 257 transitions, 848 flow [2022-11-02 20:50:45,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:50:45,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:50:45,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2012 transitions. [2022-11-02 20:50:45,885 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8863436123348017 [2022-11-02 20:50:45,885 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2012 transitions. [2022-11-02 20:50:45,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2012 transitions. [2022-11-02 20:50:45,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:45,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2012 transitions. [2022-11-02 20:50:45,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 201.2) internal successors, (2012), 10 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:45,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 227.0) internal successors, (2497), 11 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:45,897 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 227.0) internal successors, (2497), 11 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:45,897 INFO L175 Difference]: Start difference. First operand has 236 places, 228 transitions, 648 flow. Second operand 10 states and 2012 transitions. [2022-11-02 20:50:45,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 257 transitions, 848 flow [2022-11-02 20:50:45,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 257 transitions, 841 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-02 20:50:45,912 INFO L231 Difference]: Finished difference. Result has 246 places, 229 transitions, 681 flow [2022-11-02 20:50:45,913 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=681, PETRI_PLACES=246, PETRI_TRANSITIONS=229} [2022-11-02 20:50:45,914 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 39 predicate places. [2022-11-02 20:50:45,914 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 229 transitions, 681 flow [2022-11-02 20:50:45,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 198.5) internal successors, (1588), 8 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:45,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:45,915 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] [2022-11-02 20:50:45,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:50:45,916 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:50:45,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:45,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1454619201, now seen corresponding path program 1 times [2022-11-02 20:50:45,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:45,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993341091] [2022-11-02 20:50:45,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:45,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:46,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:46,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:46,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993341091] [2022-11-02 20:50:46,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993341091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:46,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:46,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:50:46,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558145864] [2022-11-02 20:50:46,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:46,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:50:46,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:46,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:50:46,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:50:46,219 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2022-11-02 20:50:46,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 229 transitions, 681 flow. Second operand has 8 states, 8 states have (on average 198.5) internal successors, (1588), 8 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:46,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:46,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2022-11-02 20:50:46,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:46,684 INFO L130 PetriNetUnfolder]: 240/1738 cut-off events. [2022-11-02 20:50:46,684 INFO L131 PetriNetUnfolder]: For 598/723 co-relation queries the response was YES. [2022-11-02 20:50:46,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3073 conditions, 1738 events. 240/1738 cut-off events. For 598/723 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 14379 event pairs, 120 based on Foata normal form. 30/1614 useless extension candidates. Maximal degree in co-relation 3044. Up to 273 conditions per place. [2022-11-02 20:50:46,705 INFO L137 encePairwiseOnDemand]: 217/227 looper letters, 21 selfloop transitions, 2 changer transitions 38/264 dead transitions. [2022-11-02 20:50:46,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 264 transitions, 930 flow [2022-11-02 20:50:46,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:50:46,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:50:46,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2012 transitions. [2022-11-02 20:50:46,710 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8863436123348017 [2022-11-02 20:50:46,710 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2012 transitions. [2022-11-02 20:50:46,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2012 transitions. [2022-11-02 20:50:46,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:46,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2012 transitions. [2022-11-02 20:50:46,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 201.2) internal successors, (2012), 10 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:46,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 227.0) internal successors, (2497), 11 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:46,721 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 227.0) internal successors, (2497), 11 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:46,722 INFO L175 Difference]: Start difference. First operand has 246 places, 229 transitions, 681 flow. Second operand 10 states and 2012 transitions. [2022-11-02 20:50:46,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 264 transitions, 930 flow [2022-11-02 20:50:46,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 264 transitions, 912 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-11-02 20:50:46,732 INFO L231 Difference]: Finished difference. Result has 254 places, 226 transitions, 673 flow [2022-11-02 20:50:46,733 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=673, PETRI_PLACES=254, PETRI_TRANSITIONS=226} [2022-11-02 20:50:46,734 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 47 predicate places. [2022-11-02 20:50:46,734 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 226 transitions, 673 flow [2022-11-02 20:50:46,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 198.5) internal successors, (1588), 8 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:46,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:46,735 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] [2022-11-02 20:50:46,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:50:46,736 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:50:46,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:46,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1761027793, now seen corresponding path program 1 times [2022-11-02 20:50:46,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:46,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971109840] [2022-11-02 20:50:46,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:46,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:47,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:47,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:47,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971109840] [2022-11-02 20:50:47,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971109840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:47,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:47,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-02 20:50:47,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632219117] [2022-11-02 20:50:47,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:47,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-02 20:50:47,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:47,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-02 20:50:47,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:50:48,017 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 227 [2022-11-02 20:50:48,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 226 transitions, 673 flow. Second operand has 28 states, 28 states have (on average 147.39285714285714) internal successors, (4127), 28 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:48,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:48,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 227 [2022-11-02 20:50:48,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:07,341 INFO L130 PetriNetUnfolder]: 16034/36964 cut-off events. [2022-11-02 20:51:07,341 INFO L131 PetriNetUnfolder]: For 9527/9668 co-relation queries the response was YES. [2022-11-02 20:51:07,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73557 conditions, 36964 events. 16034/36964 cut-off events. For 9527/9668 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 376204 event pairs, 3448 based on Foata normal form. 40/35527 useless extension candidates. Maximal degree in co-relation 73524. Up to 4244 conditions per place. [2022-11-02 20:51:07,834 INFO L137 encePairwiseOnDemand]: 191/227 looper letters, 630 selfloop transitions, 151 changer transitions 204/1120 dead transitions. [2022-11-02 20:51:07,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 1120 transitions, 5447 flow [2022-11-02 20:51:07,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-11-02 20:51:07,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2022-11-02 20:51:07,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 17617 transitions. [2022-11-02 20:51:07,876 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6748515610036392 [2022-11-02 20:51:07,876 INFO L72 ComplementDD]: Start complementDD. Operand 115 states and 17617 transitions. [2022-11-02 20:51:07,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 17617 transitions. [2022-11-02 20:51:07,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:07,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 115 states and 17617 transitions. [2022-11-02 20:51:07,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 116 states, 115 states have (on average 153.19130434782608) internal successors, (17617), 115 states have internal predecessors, (17617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:07,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 116 states, 116 states have (on average 227.0) internal successors, (26332), 116 states have internal predecessors, (26332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:08,001 INFO L81 ComplementDD]: Finished complementDD. Result has 116 states, 116 states have (on average 227.0) internal successors, (26332), 116 states have internal predecessors, (26332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:08,002 INFO L175 Difference]: Start difference. First operand has 254 places, 226 transitions, 673 flow. Second operand 115 states and 17617 transitions. [2022-11-02 20:51:08,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 1120 transitions, 5447 flow [2022-11-02 20:51:08,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 1120 transitions, 4885 flow, removed 279 selfloop flow, removed 9 redundant places. [2022-11-02 20:51:08,456 INFO L231 Difference]: Finished difference. Result has 455 places, 373 transitions, 1892 flow [2022-11-02 20:51:08,456 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=115, PETRI_FLOW=1892, PETRI_PLACES=455, PETRI_TRANSITIONS=373} [2022-11-02 20:51:08,458 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 248 predicate places. [2022-11-02 20:51:08,458 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 373 transitions, 1892 flow [2022-11-02 20:51:08,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 147.39285714285714) internal successors, (4127), 28 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:08,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:08,460 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] [2022-11-02 20:51:08,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:51:08,461 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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 20:51:08,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:08,463 INFO L85 PathProgramCache]: Analyzing trace with hash -585750115, now seen corresponding path program 2 times [2022-11-02 20:51:08,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:08,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599451740] [2022-11-02 20:51:08,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:08,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:09,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:09,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:09,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599451740] [2022-11-02 20:51:09,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599451740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:09,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:09,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-02 20:51:09,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675885076] [2022-11-02 20:51:09,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:09,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-02 20:51:09,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:09,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-02 20:51:09,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:51:09,777 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 227 [2022-11-02 20:51:09,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 373 transitions, 1892 flow. Second operand has 28 states, 28 states have (on average 147.39285714285714) internal successors, (4127), 28 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:09,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:09,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 227 [2022-11-02 20:51:09,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:01,342 INFO L130 PetriNetUnfolder]: 40107/86515 cut-off events. [2022-11-02 20:52:01,343 INFO L131 PetriNetUnfolder]: For 1668043/1668084 co-relation queries the response was YES. [2022-11-02 20:52:03,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421180 conditions, 86515 events. 40107/86515 cut-off events. For 1668043/1668084 co-relation queries the response was YES. Maximal size of possible extension queue 1719. Compared 968452 event pairs, 2382 based on Foata normal form. 13/83667 useless extension candidates. Maximal degree in co-relation 421056. Up to 18091 conditions per place. [2022-11-02 20:52:03,908 INFO L137 encePairwiseOnDemand]: 191/227 looper letters, 1243 selfloop transitions, 186 changer transitions 456/2020 dead transitions. [2022-11-02 20:52:03,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 2020 transitions, 23775 flow [2022-11-02 20:52:03,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2022-11-02 20:52:03,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2022-11-02 20:52:03,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 29395 transitions. [2022-11-02 20:52:03,957 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6709502179817854 [2022-11-02 20:52:03,957 INFO L72 ComplementDD]: Start complementDD. Operand 193 states and 29395 transitions. [2022-11-02 20:52:03,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 193 states and 29395 transitions. [2022-11-02 20:52:03,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:03,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 193 states and 29395 transitions. [2022-11-02 20:52:04,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 194 states, 193 states have (on average 152.30569948186528) internal successors, (29395), 193 states have internal predecessors, (29395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:04,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 194 states, 194 states have (on average 227.0) internal successors, (44038), 194 states have internal predecessors, (44038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:04,092 INFO L81 ComplementDD]: Finished complementDD. Result has 194 states, 194 states have (on average 227.0) internal successors, (44038), 194 states have internal predecessors, (44038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:04,093 INFO L175 Difference]: Start difference. First operand has 455 places, 373 transitions, 1892 flow. Second operand 193 states and 29395 transitions. [2022-11-02 20:52:04,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 2020 transitions, 23775 flow [2022-11-02 20:52:15,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 2020 transitions, 16645 flow, removed 3541 selfloop flow, removed 46 redundant places. [2022-11-02 20:52:15,155 INFO L231 Difference]: Finished difference. Result has 727 places, 628 transitions, 4820 flow [2022-11-02 20:52:15,156 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=193, PETRI_FLOW=4820, PETRI_PLACES=727, PETRI_TRANSITIONS=628} [2022-11-02 20:52:15,157 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 520 predicate places. [2022-11-02 20:52:15,157 INFO L495 AbstractCegarLoop]: Abstraction has has 727 places, 628 transitions, 4820 flow [2022-11-02 20:52:15,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 147.39285714285714) internal successors, (4127), 28 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:15,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:15,158 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] [2022-11-02 20:52:15,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:52:15,159 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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 20:52:15,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:15,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1118675783, now seen corresponding path program 3 times [2022-11-02 20:52:15,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:15,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503447620] [2022-11-02 20:52:15,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:15,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:16,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:16,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503447620] [2022-11-02 20:52:16,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503447620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:16,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:16,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-02 20:52:16,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550437025] [2022-11-02 20:52:16,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:16,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-02 20:52:16,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:16,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-02 20:52:16,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:52:16,091 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 227 [2022-11-02 20:52:16,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 727 places, 628 transitions, 4820 flow. Second operand has 28 states, 28 states have (on average 147.39285714285714) internal successors, (4127), 28 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:16,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:16,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 227 [2022-11-02 20:52:16,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand