./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX --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 f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:44:11,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:44:11,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:44:11,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:44:11,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:44:11,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:44:11,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:44:11,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:44:11,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:44:11,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:44:11,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:44:11,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:44:11,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:44:11,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:44:11,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:44:11,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:44:11,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:44:11,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:44:11,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:44:11,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:44:11,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:44:11,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:44:11,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:44:11,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:44:11,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:44:11,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:44:11,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:44:11,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:44:11,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:44:11,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:44:11,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:44:11,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:44:11,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:44:11,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:44:11,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:44:11,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:44:11,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:44:11,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:44:11,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:44:11,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:44:11,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:44:11,519 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:44:11,544 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:44:11,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:44:11,545 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:44:11,545 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:44:11,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:44:11,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:44:11,547 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:44:11,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:44:11,548 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:44:11,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:44:11,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:44:11,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:44:11,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:44:11,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:44:11,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:44:11,550 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:44:11,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:44:11,551 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:44:11,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:44:11,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:44:11,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:44:11,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:44:11,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:44:11,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:44:11,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:44:11,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:44:11,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:44:11,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:44:11,554 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:44:11,554 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:44:11,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:44:11,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:44:11,555 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_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2021-11-09 09:44:11,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:44:11,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:44:11,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:44:11,977 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:44:11,978 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:44:11,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2021-11-09 09:44:12,082 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/data/ae48c2747/5f3fdfb3d0254e71b8f581ffdc87ff89/FLAGe0ed1d227 [2021-11-09 09:44:12,685 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:44:12,693 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2021-11-09 09:44:12,703 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/data/ae48c2747/5f3fdfb3d0254e71b8f581ffdc87ff89/FLAGe0ed1d227 [2021-11-09 09:44:13,008 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/data/ae48c2747/5f3fdfb3d0254e71b8f581ffdc87ff89 [2021-11-09 09:44:13,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:44:13,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:44:13,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:44:13,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:44:13,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:44:13,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:44:13" (1/1) ... [2021-11-09 09:44:13,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f4a867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:13, skipping insertion in model container [2021-11-09 09:44:13,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:44:13" (1/1) ... [2021-11-09 09:44:13,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:44:13,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:44:13,455 WARN L228 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_b1b4a710-c402-457b-9628-fbc451b89fa4/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2021-11-09 09:44:13,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:44:13,475 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:44:13,517 WARN L228 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_b1b4a710-c402-457b-9628-fbc451b89fa4/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2021-11-09 09:44:13,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:44:13,552 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:44:13,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:13 WrapperNode [2021-11-09 09:44:13,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:44:13,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:44:13,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:44:13,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:44:13,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:13" (1/1) ... [2021-11-09 09:44:13,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:13" (1/1) ... [2021-11-09 09:44:13,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:44:13,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:44:13,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:44:13,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:44:13,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:13" (1/1) ... [2021-11-09 09:44:13,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:13" (1/1) ... [2021-11-09 09:44:13,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:13" (1/1) ... [2021-11-09 09:44:13,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:13" (1/1) ... [2021-11-09 09:44:13,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:13" (1/1) ... [2021-11-09 09:44:13,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:13" (1/1) ... [2021-11-09 09:44:13,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:13" (1/1) ... [2021-11-09 09:44:13,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:44:13,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:44:13,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:44:13,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:44:13,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:13" (1/1) ... [2021-11-09 09:44:13,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:44:13,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:44:13,768 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:44:13,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:44:13,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:44:13,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 09:44:13,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 09:44:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-09 09:44:13,817 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-09 09:44:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-09 09:44:13,817 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-09 09:44:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-09 09:44:13,817 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-09 09:44:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-11-09 09:44:13,818 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-11-09 09:44:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:44:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-09 09:44:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-09 09:44:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:44:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:44:13,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:44:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:44:13,821 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-09 09:44:15,782 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:44:15,782 INFO L299 CfgBuilder]: Removed 74 assume(true) statements. [2021-11-09 09:44:15,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:44:15 BoogieIcfgContainer [2021-11-09 09:44:15,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:44:15,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:44:15,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:44:15,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:44:15,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:44:13" (1/3) ... [2021-11-09 09:44:15,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151ab9cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:44:15, skipping insertion in model container [2021-11-09 09:44:15,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:13" (2/3) ... [2021-11-09 09:44:15,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151ab9cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:44:15, skipping insertion in model container [2021-11-09 09:44:15,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:44:15" (3/3) ... [2021-11-09 09:44:15,795 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2021-11-09 09:44:15,801 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-09 09:44:15,802 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:44:15,802 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 09:44:15,802 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-09 09:44:15,855 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,856 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,856 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,856 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,856 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,857 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,857 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,857 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,857 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,858 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,858 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,858 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,858 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,858 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,859 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,859 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,859 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,859 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,860 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,860 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,860 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,860 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,861 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,861 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,862 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,862 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,862 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,862 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,862 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,863 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,863 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,863 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,863 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,863 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,864 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,864 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,864 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,864 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,864 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,865 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,865 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,865 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,865 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,865 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,866 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,866 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,867 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,867 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,867 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,867 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,867 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,867 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,868 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,868 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,869 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,869 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,869 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,869 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,870 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,870 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,870 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,870 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,870 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,871 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,872 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,873 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,873 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,873 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,874 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,874 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,874 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,874 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,874 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,875 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,875 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,875 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,875 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,875 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,876 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,876 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,876 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,876 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,876 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,876 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,877 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,877 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,877 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,878 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,878 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,878 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,879 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,879 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,879 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,879 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,879 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,880 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,880 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,880 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,880 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,881 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,881 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,881 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,881 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,881 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,882 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,882 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,882 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,882 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,882 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,882 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,883 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,883 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,883 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,883 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,883 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,883 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,884 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,884 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,884 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,885 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,885 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,885 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,886 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,886 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,886 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,886 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,886 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,887 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,887 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,887 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,887 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,888 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,888 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,888 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,888 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,888 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,889 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,889 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,889 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,889 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,889 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,889 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,890 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,890 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,890 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,890 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,890 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,891 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,891 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,891 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,891 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,891 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~short35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,891 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,892 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,892 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,892 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,893 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,893 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~short35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,893 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,893 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,893 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,893 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,898 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,898 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,898 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,898 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,899 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,899 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,899 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,899 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,899 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,901 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,902 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,902 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,902 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,902 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,903 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,903 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,903 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,903 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,903 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,905 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,906 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,906 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,906 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,906 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,906 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,907 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,907 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,907 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,907 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,908 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,908 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,908 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,908 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,908 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,909 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,909 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,909 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,909 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,909 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,911 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,911 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,912 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,912 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~short35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,912 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,912 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,912 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,913 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,913 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,913 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 09:44:15,922 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-11-09 09:44:15,980 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:44:15,987 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:44:15,988 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-09 09:44:16,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 286 places, 298 transitions, 628 flow [2021-11-09 09:44:16,188 INFO L129 PetriNetUnfolder]: 25/294 cut-off events. [2021-11-09 09:44:16,194 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-09 09:44:16,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 294 events. 25/294 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 185 event pairs, 0 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 257. Up to 2 conditions per place. [2021-11-09 09:44:16,203 INFO L82 GeneralOperation]: Start removeDead. Operand has 286 places, 298 transitions, 628 flow [2021-11-09 09:44:16,214 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 270 places, 282 transitions, 588 flow [2021-11-09 09:44:16,331 INFO L129 PetriNetUnfolder]: 25/281 cut-off events. [2021-11-09 09:44:16,331 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-09 09:44:16,332 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:44:16,333 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:44:16,334 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:44:16,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:44:16,344 INFO L85 PathProgramCache]: Analyzing trace with hash -304247639, now seen corresponding path program 1 times [2021-11-09 09:44:16,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:44:16,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280933497] [2021-11-09 09:44:16,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:44:16,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:44:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:44:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:44:16,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:44:16,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280933497] [2021-11-09 09:44:16,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280933497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:44:16,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:44:16,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 09:44:16,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439745303] [2021-11-09 09:44:16,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 09:44:16,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:44:16,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:44:16,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:44:16,838 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 298 [2021-11-09 09:44:16,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 282 transitions, 588 flow. Second operand has 2 states, 2 states have (on average 283.5) internal successors, (567), 2 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:16,847 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:44:16,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 298 [2021-11-09 09:44:16,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:44:16,943 INFO L129 PetriNetUnfolder]: 8/265 cut-off events. [2021-11-09 09:44:16,944 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-09 09:44:16,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 265 events. 8/265 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 156 event pairs, 0 based on Foata normal form. 17/265 useless extension candidates. Maximal degree in co-relation 277. Up to 2 conditions per place. [2021-11-09 09:44:16,951 INFO L132 encePairwiseOnDemand]: 281/298 looper letters, 0 selfloop transitions, 0 changer transitions 9/265 dead transitions. [2021-11-09 09:44:16,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 265 transitions, 554 flow [2021-11-09 09:44:16,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:44:16,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-11-09 09:44:16,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 577 transitions. [2021-11-09 09:44:16,978 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9681208053691275 [2021-11-09 09:44:16,979 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 577 transitions. [2021-11-09 09:44:16,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 577 transitions. [2021-11-09 09:44:16,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:44:16,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 577 transitions. [2021-11-09 09:44:16,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 288.5) internal successors, (577), 2 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:17,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:17,010 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:17,012 INFO L186 Difference]: Start difference. First operand has 270 places, 282 transitions, 588 flow. Second operand 2 states and 577 transitions. [2021-11-09 09:44:17,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 265 transitions, 554 flow [2021-11-09 09:44:17,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 265 transitions, 538 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-11-09 09:44:17,037 INFO L242 Difference]: Finished difference. Result has 263 places, 256 transitions, 520 flow [2021-11-09 09:44:17,040 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=520, PETRI_PLACES=263, PETRI_TRANSITIONS=256} [2021-11-09 09:44:17,041 INFO L334 CegarLoopForPetriNet]: 270 programPoint places, -7 predicate places. [2021-11-09 09:44:17,042 INFO L470 AbstractCegarLoop]: Abstraction has has 263 places, 256 transitions, 520 flow [2021-11-09 09:44:17,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 283.5) internal successors, (567), 2 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:17,043 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:44:17,044 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:44:17,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:44:17,045 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:44:17,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:44:17,046 INFO L85 PathProgramCache]: Analyzing trace with hash 2117883396, now seen corresponding path program 1 times [2021-11-09 09:44:17,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:44:17,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360032460] [2021-11-09 09:44:17,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:44:17,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:44:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:44:17,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:44:17,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:44:17,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360032460] [2021-11-09 09:44:17,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360032460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:44:17,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:44:17,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:44:17,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934140721] [2021-11-09 09:44:17,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:44:17,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:44:17,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:44:17,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:44:17,623 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 298 [2021-11-09 09:44:17,625 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 256 transitions, 520 flow. Second operand has 5 states, 5 states have (on average 234.6) internal successors, (1173), 5 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:17,626 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:44:17,626 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 298 [2021-11-09 09:44:17,626 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:44:17,902 INFO L129 PetriNetUnfolder]: 96/433 cut-off events. [2021-11-09 09:44:17,903 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-09 09:44:17,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 433 events. 96/433 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 966 event pairs, 30 based on Foata normal form. 1/389 useless extension candidates. Maximal degree in co-relation 579. Up to 107 conditions per place. [2021-11-09 09:44:17,913 INFO L132 encePairwiseOnDemand]: 290/298 looper letters, 43 selfloop transitions, 5 changer transitions 3/263 dead transitions. [2021-11-09 09:44:17,913 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 263 transitions, 636 flow [2021-11-09 09:44:17,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:44:17,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-09 09:44:17,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1187 transitions. [2021-11-09 09:44:17,922 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7966442953020134 [2021-11-09 09:44:17,922 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1187 transitions. [2021-11-09 09:44:17,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1187 transitions. [2021-11-09 09:44:17,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:44:17,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1187 transitions. [2021-11-09 09:44:17,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 237.4) internal successors, (1187), 5 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:17,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 298.0) internal successors, (1788), 6 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:17,938 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 298.0) internal successors, (1788), 6 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:17,938 INFO L186 Difference]: Start difference. First operand has 263 places, 256 transitions, 520 flow. Second operand 5 states and 1187 transitions. [2021-11-09 09:44:17,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 263 transitions, 636 flow [2021-11-09 09:44:17,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 263 transitions, 636 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-09 09:44:17,953 INFO L242 Difference]: Finished difference. Result has 261 places, 260 transitions, 557 flow [2021-11-09 09:44:17,954 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=557, PETRI_PLACES=261, PETRI_TRANSITIONS=260} [2021-11-09 09:44:17,954 INFO L334 CegarLoopForPetriNet]: 270 programPoint places, -9 predicate places. [2021-11-09 09:44:17,955 INFO L470 AbstractCegarLoop]: Abstraction has has 261 places, 260 transitions, 557 flow [2021-11-09 09:44:17,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 234.6) internal successors, (1173), 5 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:17,957 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:44:17,957 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:44:17,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:44:17,958 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:44:17,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:44:17,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1797839444, now seen corresponding path program 1 times [2021-11-09 09:44:17,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:44:17,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167278745] [2021-11-09 09:44:17,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:44:17,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:44:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:44:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:44:18,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:44:18,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167278745] [2021-11-09 09:44:18,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167278745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:44:18,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:44:18,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:44:18,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971958121] [2021-11-09 09:44:18,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:44:18,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:44:18,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:44:18,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:44:18,307 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 298 [2021-11-09 09:44:18,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 260 transitions, 557 flow. Second operand has 6 states, 6 states have (on average 229.83333333333334) internal successors, (1379), 6 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:18,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:44:18,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 298 [2021-11-09 09:44:18,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:44:18,676 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1216] L131-->L135: Formula: (and (= v_~manager_back~0_122 (+ v_~manager_back~0_123 1)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1) (not (= v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1 0)) (not (= (ite (and (<= 0 v_~manager_back~0_123) (< v_~manager_back~0_123 v_~manager_size~0_46)) 1 0) 0)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| (ite (= (select (select |v_#memory_int_147| v_~manager~0.base_65) (+ v_~manager~0.offset_65 (* v_~manager_back~0_123 4))) v_~update~0_61) 1 0))) InVars {~manager~0.offset=v_~manager~0.offset_65, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_123, ~manager_size~0=v_~manager_size~0_46, ~update~0=v_~update~0_61} OutVars{~manager~0.offset=v_~manager~0.offset_65, thread4Thread1of1ForFork3_#t~mem32=|v_thread4Thread1of1ForFork3_#t~mem32_1|, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_122, ~manager_size~0=v_~manager_size~0_46, thread4Thread1of1ForFork3_#t~post33=|v_thread4Thread1of1ForFork3_#t~post33_1|, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1|, thread4Thread1of1ForFork3_assume_abort_if_not_~cond=v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1, ~update~0=v_~update~0_61} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_#t~mem32, ~manager_back~0, thread4Thread1of1ForFork3_#t~post33, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond, thread4Thread1of1ForFork3_assume_abort_if_not_~cond][284], [Black: 300#(and (= ~safe~0 1) (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0)), 139#L105true, 289#true, 247#L123true, 292#true, 192#L75true, 176#L135true, Black: 298#(and (= ~safe~0 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0)), 305#true, 81#L179-4true, Black: 294#(= ~safe~0 1)]) [2021-11-09 09:44:18,677 INFO L384 tUnfolder$Statistics]: this new event has 193 ancestors and is cut-off event [2021-11-09 09:44:18,677 INFO L387 tUnfolder$Statistics]: existing Event has 189 ancestors and is cut-off event [2021-11-09 09:44:18,677 INFO L387 tUnfolder$Statistics]: existing Event has 193 ancestors and is cut-off event [2021-11-09 09:44:18,678 INFO L387 tUnfolder$Statistics]: existing Event has 193 ancestors and is cut-off event [2021-11-09 09:44:18,678 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1216] L131-->L135: Formula: (and (= v_~manager_back~0_122 (+ v_~manager_back~0_123 1)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1) (not (= v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1 0)) (not (= (ite (and (<= 0 v_~manager_back~0_123) (< v_~manager_back~0_123 v_~manager_size~0_46)) 1 0) 0)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| (ite (= (select (select |v_#memory_int_147| v_~manager~0.base_65) (+ v_~manager~0.offset_65 (* v_~manager_back~0_123 4))) v_~update~0_61) 1 0))) InVars {~manager~0.offset=v_~manager~0.offset_65, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_123, ~manager_size~0=v_~manager_size~0_46, ~update~0=v_~update~0_61} OutVars{~manager~0.offset=v_~manager~0.offset_65, thread4Thread1of1ForFork3_#t~mem32=|v_thread4Thread1of1ForFork3_#t~mem32_1|, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_122, ~manager_size~0=v_~manager_size~0_46, thread4Thread1of1ForFork3_#t~post33=|v_thread4Thread1of1ForFork3_#t~post33_1|, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1|, thread4Thread1of1ForFork3_assume_abort_if_not_~cond=v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1, ~update~0=v_~update~0_61} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_#t~mem32, ~manager_back~0, thread4Thread1of1ForFork3_#t~post33, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond, thread4Thread1of1ForFork3_assume_abort_if_not_~cond][284], [Black: 300#(and (= ~safe~0 1) (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0)), 139#L105true, 289#true, 247#L123true, 162#L57true, 292#true, 176#L135true, Black: 298#(and (= ~safe~0 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0)), 305#true, 81#L179-4true, Black: 294#(= ~safe~0 1)]) [2021-11-09 09:44:18,678 INFO L384 tUnfolder$Statistics]: this new event has 190 ancestors and is cut-off event [2021-11-09 09:44:18,679 INFO L387 tUnfolder$Statistics]: existing Event has 190 ancestors and is cut-off event [2021-11-09 09:44:18,679 INFO L387 tUnfolder$Statistics]: existing Event has 190 ancestors and is cut-off event [2021-11-09 09:44:18,679 INFO L387 tUnfolder$Statistics]: existing Event has 186 ancestors and is cut-off event [2021-11-09 09:44:18,682 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1216] L131-->L135: Formula: (and (= v_~manager_back~0_122 (+ v_~manager_back~0_123 1)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1) (not (= v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1 0)) (not (= (ite (and (<= 0 v_~manager_back~0_123) (< v_~manager_back~0_123 v_~manager_size~0_46)) 1 0) 0)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| (ite (= (select (select |v_#memory_int_147| v_~manager~0.base_65) (+ v_~manager~0.offset_65 (* v_~manager_back~0_123 4))) v_~update~0_61) 1 0))) InVars {~manager~0.offset=v_~manager~0.offset_65, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_123, ~manager_size~0=v_~manager_size~0_46, ~update~0=v_~update~0_61} OutVars{~manager~0.offset=v_~manager~0.offset_65, thread4Thread1of1ForFork3_#t~mem32=|v_thread4Thread1of1ForFork3_#t~mem32_1|, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_122, ~manager_size~0=v_~manager_size~0_46, thread4Thread1of1ForFork3_#t~post33=|v_thread4Thread1of1ForFork3_#t~post33_1|, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1|, thread4Thread1of1ForFork3_assume_abort_if_not_~cond=v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1, ~update~0=v_~update~0_61} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_#t~mem32, ~manager_back~0, thread4Thread1of1ForFork3_#t~post33, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond, thread4Thread1of1ForFork3_assume_abort_if_not_~cond][284], [Black: 300#(and (= ~safe~0 1) (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0)), 139#L105true, 289#true, 247#L123true, 292#true, 176#L135true, Black: 298#(and (= ~safe~0 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0)), 167#L87true, 305#true, 81#L179-4true, Black: 294#(= ~safe~0 1)]) [2021-11-09 09:44:18,683 INFO L384 tUnfolder$Statistics]: this new event has 191 ancestors and is cut-off event [2021-11-09 09:44:18,683 INFO L387 tUnfolder$Statistics]: existing Event has 187 ancestors and is cut-off event [2021-11-09 09:44:18,683 INFO L387 tUnfolder$Statistics]: existing Event has 187 ancestors and is cut-off event [2021-11-09 09:44:18,683 INFO L387 tUnfolder$Statistics]: existing Event has 187 ancestors and is cut-off event [2021-11-09 09:44:18,690 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1216] L131-->L135: Formula: (and (= v_~manager_back~0_122 (+ v_~manager_back~0_123 1)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1) (not (= v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1 0)) (not (= (ite (and (<= 0 v_~manager_back~0_123) (< v_~manager_back~0_123 v_~manager_size~0_46)) 1 0) 0)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| (ite (= (select (select |v_#memory_int_147| v_~manager~0.base_65) (+ v_~manager~0.offset_65 (* v_~manager_back~0_123 4))) v_~update~0_61) 1 0))) InVars {~manager~0.offset=v_~manager~0.offset_65, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_123, ~manager_size~0=v_~manager_size~0_46, ~update~0=v_~update~0_61} OutVars{~manager~0.offset=v_~manager~0.offset_65, thread4Thread1of1ForFork3_#t~mem32=|v_thread4Thread1of1ForFork3_#t~mem32_1|, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_122, ~manager_size~0=v_~manager_size~0_46, thread4Thread1of1ForFork3_#t~post33=|v_thread4Thread1of1ForFork3_#t~post33_1|, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1|, thread4Thread1of1ForFork3_assume_abort_if_not_~cond=v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1, ~update~0=v_~update~0_61} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_#t~mem32, ~manager_back~0, thread4Thread1of1ForFork3_#t~post33, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond, thread4Thread1of1ForFork3_assume_abort_if_not_~cond][284], [Black: 300#(and (= ~safe~0 1) (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0)), 75#L81true, 139#L105true, 289#true, 247#L123true, 292#true, 176#L135true, Black: 298#(and (= ~safe~0 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0)), 305#true, 81#L179-4true, Black: 294#(= ~safe~0 1)]) [2021-11-09 09:44:18,690 INFO L384 tUnfolder$Statistics]: this new event has 194 ancestors and is cut-off event [2021-11-09 09:44:18,690 INFO L387 tUnfolder$Statistics]: existing Event has 194 ancestors and is cut-off event [2021-11-09 09:44:18,691 INFO L387 tUnfolder$Statistics]: existing Event has 190 ancestors and is cut-off event [2021-11-09 09:44:18,691 INFO L387 tUnfolder$Statistics]: existing Event has 194 ancestors and is cut-off event [2021-11-09 09:44:18,741 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1216] L131-->L135: Formula: (and (= v_~manager_back~0_122 (+ v_~manager_back~0_123 1)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1) (not (= v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1 0)) (not (= (ite (and (<= 0 v_~manager_back~0_123) (< v_~manager_back~0_123 v_~manager_size~0_46)) 1 0) 0)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| (ite (= (select (select |v_#memory_int_147| v_~manager~0.base_65) (+ v_~manager~0.offset_65 (* v_~manager_back~0_123 4))) v_~update~0_61) 1 0))) InVars {~manager~0.offset=v_~manager~0.offset_65, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_123, ~manager_size~0=v_~manager_size~0_46, ~update~0=v_~update~0_61} OutVars{~manager~0.offset=v_~manager~0.offset_65, thread4Thread1of1ForFork3_#t~mem32=|v_thread4Thread1of1ForFork3_#t~mem32_1|, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_122, ~manager_size~0=v_~manager_size~0_46, thread4Thread1of1ForFork3_#t~post33=|v_thread4Thread1of1ForFork3_#t~post33_1|, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1|, thread4Thread1of1ForFork3_assume_abort_if_not_~cond=v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1, ~update~0=v_~update~0_61} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_#t~mem32, ~manager_back~0, thread4Thread1of1ForFork3_#t~post33, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond, thread4Thread1of1ForFork3_assume_abort_if_not_~cond][284], [Black: 300#(and (= ~safe~0 1) (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0)), 75#L81true, 139#L105true, 289#true, 292#true, 187#L117true, 176#L135true, Black: 298#(and (= ~safe~0 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0)), 81#L179-4true, 305#true, Black: 294#(= ~safe~0 1)]) [2021-11-09 09:44:18,742 INFO L384 tUnfolder$Statistics]: this new event has 205 ancestors and is cut-off event [2021-11-09 09:44:18,742 INFO L387 tUnfolder$Statistics]: existing Event has 201 ancestors and is cut-off event [2021-11-09 09:44:18,742 INFO L387 tUnfolder$Statistics]: existing Event has 197 ancestors and is cut-off event [2021-11-09 09:44:18,742 INFO L387 tUnfolder$Statistics]: existing Event has 197 ancestors and is cut-off event [2021-11-09 09:44:18,746 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([1216] L131-->L135: Formula: (and (= v_~manager_back~0_122 (+ v_~manager_back~0_123 1)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1) (not (= v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1 0)) (not (= (ite (and (<= 0 v_~manager_back~0_123) (< v_~manager_back~0_123 v_~manager_size~0_46)) 1 0) 0)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| (ite (= (select (select |v_#memory_int_147| v_~manager~0.base_65) (+ v_~manager~0.offset_65 (* v_~manager_back~0_123 4))) v_~update~0_61) 1 0))) InVars {~manager~0.offset=v_~manager~0.offset_65, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_123, ~manager_size~0=v_~manager_size~0_46, ~update~0=v_~update~0_61} OutVars{~manager~0.offset=v_~manager~0.offset_65, thread4Thread1of1ForFork3_#t~mem32=|v_thread4Thread1of1ForFork3_#t~mem32_1|, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_122, ~manager_size~0=v_~manager_size~0_46, thread4Thread1of1ForFork3_#t~post33=|v_thread4Thread1of1ForFork3_#t~post33_1|, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1|, thread4Thread1of1ForFork3_assume_abort_if_not_~cond=v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1, ~update~0=v_~update~0_61} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_#t~mem32, ~manager_back~0, thread4Thread1of1ForFork3_#t~post33, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond, thread4Thread1of1ForFork3_assume_abort_if_not_~cond][284], [Black: 300#(and (= ~safe~0 1) (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0)), 75#L81true, 139#L105true, 289#true, 247#L123true, 292#true, 176#L135true, Black: 298#(and (= ~safe~0 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0)), 305#true, 81#L179-4true, Black: 294#(= ~safe~0 1)]) [2021-11-09 09:44:18,746 INFO L384 tUnfolder$Statistics]: this new event has 206 ancestors and is cut-off event [2021-11-09 09:44:18,746 INFO L387 tUnfolder$Statistics]: existing Event has 194 ancestors and is cut-off event [2021-11-09 09:44:18,746 INFO L387 tUnfolder$Statistics]: existing Event has 190 ancestors and is cut-off event [2021-11-09 09:44:18,747 INFO L387 tUnfolder$Statistics]: existing Event has 194 ancestors and is cut-off event [2021-11-09 09:44:18,747 INFO L387 tUnfolder$Statistics]: existing Event has 194 ancestors and is cut-off event [2021-11-09 09:44:18,766 INFO L129 PetriNetUnfolder]: 156/818 cut-off events. [2021-11-09 09:44:18,766 INFO L130 PetriNetUnfolder]: For 30/32 co-relation queries the response was YES. [2021-11-09 09:44:18,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1158 conditions, 818 events. 156/818 cut-off events. For 30/32 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2865 event pairs, 30 based on Foata normal form. 8/734 useless extension candidates. Maximal degree in co-relation 1151. Up to 175 conditions per place. [2021-11-09 09:44:18,781 INFO L132 encePairwiseOnDemand]: 285/298 looper letters, 53 selfloop transitions, 8 changer transitions 37/301 dead transitions. [2021-11-09 09:44:18,781 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 301 transitions, 835 flow [2021-11-09 09:44:18,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:44:18,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-09 09:44:18,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2117 transitions. [2021-11-09 09:44:18,791 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7893363161819538 [2021-11-09 09:44:18,792 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2117 transitions. [2021-11-09 09:44:18,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2117 transitions. [2021-11-09 09:44:18,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:44:18,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2117 transitions. [2021-11-09 09:44:18,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 235.22222222222223) internal successors, (2117), 9 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:18,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 298.0) internal successors, (2980), 10 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:18,817 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 298.0) internal successors, (2980), 10 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:18,817 INFO L186 Difference]: Start difference. First operand has 261 places, 260 transitions, 557 flow. Second operand 9 states and 2117 transitions. [2021-11-09 09:44:18,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 301 transitions, 835 flow [2021-11-09 09:44:18,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 301 transitions, 826 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-11-09 09:44:18,830 INFO L242 Difference]: Finished difference. Result has 266 places, 261 transitions, 584 flow [2021-11-09 09:44:18,831 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=584, PETRI_PLACES=266, PETRI_TRANSITIONS=261} [2021-11-09 09:44:18,831 INFO L334 CegarLoopForPetriNet]: 270 programPoint places, -4 predicate places. [2021-11-09 09:44:18,832 INFO L470 AbstractCegarLoop]: Abstraction has has 266 places, 261 transitions, 584 flow [2021-11-09 09:44:18,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 229.83333333333334) internal successors, (1379), 6 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:18,834 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:44:18,834 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:44:18,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 09:44:18,835 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:44:18,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:44:18,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1250030770, now seen corresponding path program 1 times [2021-11-09 09:44:18,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:44:18,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105926527] [2021-11-09 09:44:18,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:44:18,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:44:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:44:19,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:44:19,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:44:19,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105926527] [2021-11-09 09:44:19,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105926527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:44:19,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:44:19,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:44:19,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082000398] [2021-11-09 09:44:19,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:44:19,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:44:19,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:44:19,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:44:19,255 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 298 [2021-11-09 09:44:19,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 261 transitions, 584 flow. Second operand has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:19,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:44:19,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 298 [2021-11-09 09:44:19,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:44:19,402 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1216] L131-->L135: Formula: (and (= v_~manager_back~0_122 (+ v_~manager_back~0_123 1)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1) (not (= v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1 0)) (not (= (ite (and (<= 0 v_~manager_back~0_123) (< v_~manager_back~0_123 v_~manager_size~0_46)) 1 0) 0)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| (ite (= (select (select |v_#memory_int_147| v_~manager~0.base_65) (+ v_~manager~0.offset_65 (* v_~manager_back~0_123 4))) v_~update~0_61) 1 0))) InVars {~manager~0.offset=v_~manager~0.offset_65, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_123, ~manager_size~0=v_~manager_size~0_46, ~update~0=v_~update~0_61} OutVars{~manager~0.offset=v_~manager~0.offset_65, thread4Thread1of1ForFork3_#t~mem32=|v_thread4Thread1of1ForFork3_#t~mem32_1|, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_122, ~manager_size~0=v_~manager_size~0_46, thread4Thread1of1ForFork3_#t~post33=|v_thread4Thread1of1ForFork3_#t~post33_1|, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1|, thread4Thread1of1ForFork3_assume_abort_if_not_~cond=v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1, ~update~0=v_~update~0_61} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_#t~mem32, ~manager_back~0, thread4Thread1of1ForFork3_#t~post33, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond, thread4Thread1of1ForFork3_assume_abort_if_not_~cond][240], [Black: 310#(<= ~manager_size~0 0), 139#L105true, Black: 314#(and (= ULTIMATE.start_create_fresh_int_array_~i~0 0) (<= ~manager_size~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~manager_size~0 ULTIMATE.start_create_fresh_int_array_~size)), 289#true, 322#true, 247#L123true, 162#L57true, 176#L135true, 305#true, 81#L179-4true, Black: 294#(= ~safe~0 1)]) [2021-11-09 09:44:19,403 INFO L384 tUnfolder$Statistics]: this new event has 198 ancestors and is cut-off event [2021-11-09 09:44:19,403 INFO L387 tUnfolder$Statistics]: existing Event has 198 ancestors and is cut-off event [2021-11-09 09:44:19,403 INFO L387 tUnfolder$Statistics]: existing Event has 198 ancestors and is cut-off event [2021-11-09 09:44:19,403 INFO L387 tUnfolder$Statistics]: existing Event has 194 ancestors and is cut-off event [2021-11-09 09:44:19,437 INFO L129 PetriNetUnfolder]: 100/564 cut-off events. [2021-11-09 09:44:19,437 INFO L130 PetriNetUnfolder]: For 58/59 co-relation queries the response was YES. [2021-11-09 09:44:19,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 774 conditions, 564 events. 100/564 cut-off events. For 58/59 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1851 event pairs, 31 based on Foata normal form. 12/523 useless extension candidates. Maximal degree in co-relation 767. Up to 82 conditions per place. [2021-11-09 09:44:19,448 INFO L132 encePairwiseOnDemand]: 291/298 looper letters, 4 selfloop transitions, 6 changer transitions 0/261 dead transitions. [2021-11-09 09:44:19,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 261 transitions, 602 flow [2021-11-09 09:44:19,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:44:19,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-09 09:44:19,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1095 transitions. [2021-11-09 09:44:19,454 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9186241610738255 [2021-11-09 09:44:19,454 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1095 transitions. [2021-11-09 09:44:19,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1095 transitions. [2021-11-09 09:44:19,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:44:19,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1095 transitions. [2021-11-09 09:44:19,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 273.75) internal successors, (1095), 4 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:19,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:19,467 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:19,467 INFO L186 Difference]: Start difference. First operand has 266 places, 261 transitions, 584 flow. Second operand 4 states and 1095 transitions. [2021-11-09 09:44:19,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 261 transitions, 602 flow [2021-11-09 09:44:19,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 261 transitions, 588 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-11-09 09:44:19,477 INFO L242 Difference]: Finished difference. Result has 263 places, 261 transitions, 586 flow [2021-11-09 09:44:19,478 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=586, PETRI_PLACES=263, PETRI_TRANSITIONS=261} [2021-11-09 09:44:19,479 INFO L334 CegarLoopForPetriNet]: 270 programPoint places, -7 predicate places. [2021-11-09 09:44:19,479 INFO L470 AbstractCegarLoop]: Abstraction has has 263 places, 261 transitions, 586 flow [2021-11-09 09:44:19,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:19,482 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:44:19,482 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:44:19,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 09:44:19,483 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:44:19,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:44:19,484 INFO L85 PathProgramCache]: Analyzing trace with hash 817289298, now seen corresponding path program 1 times [2021-11-09 09:44:19,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:44:19,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185168305] [2021-11-09 09:44:19,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:44:19,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:44:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:44:19,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:44:19,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:44:19,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185168305] [2021-11-09 09:44:19,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185168305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:44:19,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:44:19,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:44:19,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916582349] [2021-11-09 09:44:19,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:44:19,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:44:19,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:44:19,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:44:19,874 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 298 [2021-11-09 09:44:19,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 261 transitions, 586 flow. Second operand has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:19,877 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:44:19,877 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 298 [2021-11-09 09:44:19,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:44:20,003 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1216] L131-->L135: Formula: (and (= v_~manager_back~0_122 (+ v_~manager_back~0_123 1)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1) (not (= v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1 0)) (not (= (ite (and (<= 0 v_~manager_back~0_123) (< v_~manager_back~0_123 v_~manager_size~0_46)) 1 0) 0)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| (ite (= (select (select |v_#memory_int_147| v_~manager~0.base_65) (+ v_~manager~0.offset_65 (* v_~manager_back~0_123 4))) v_~update~0_61) 1 0))) InVars {~manager~0.offset=v_~manager~0.offset_65, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_123, ~manager_size~0=v_~manager_size~0_46, ~update~0=v_~update~0_61} OutVars{~manager~0.offset=v_~manager~0.offset_65, thread4Thread1of1ForFork3_#t~mem32=|v_thread4Thread1of1ForFork3_#t~mem32_1|, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_122, ~manager_size~0=v_~manager_size~0_46, thread4Thread1of1ForFork3_#t~post33=|v_thread4Thread1of1ForFork3_#t~post33_1|, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1|, thread4Thread1of1ForFork3_assume_abort_if_not_~cond=v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1, ~update~0=v_~update~0_61} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_#t~mem32, ~manager_back~0, thread4Thread1of1ForFork3_#t~post33, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond, thread4Thread1of1ForFork3_assume_abort_if_not_~cond][240], [Black: 310#(<= ~manager_size~0 0), 139#L105true, Black: 314#(and (= ULTIMATE.start_create_fresh_int_array_~i~0 0) (<= ~manager_size~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~manager_size~0 ULTIMATE.start_create_fresh_int_array_~size)), 289#true, 322#true, 247#L123true, 162#L57true, Black: 324#(<= ~node1_back~0 ~node1_front~0), 328#true, 176#L135true, 81#L179-4true, Black: 294#(= ~safe~0 1)]) [2021-11-09 09:44:20,004 INFO L384 tUnfolder$Statistics]: this new event has 198 ancestors and is cut-off event [2021-11-09 09:44:20,004 INFO L387 tUnfolder$Statistics]: existing Event has 198 ancestors and is cut-off event [2021-11-09 09:44:20,004 INFO L387 tUnfolder$Statistics]: existing Event has 198 ancestors and is cut-off event [2021-11-09 09:44:20,005 INFO L387 tUnfolder$Statistics]: existing Event has 194 ancestors and is cut-off event [2021-11-09 09:44:20,047 INFO L129 PetriNetUnfolder]: 95/561 cut-off events. [2021-11-09 09:44:20,047 INFO L130 PetriNetUnfolder]: For 76/78 co-relation queries the response was YES. [2021-11-09 09:44:20,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 561 events. 95/561 cut-off events. For 76/78 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1830 event pairs, 34 based on Foata normal form. 8/514 useless extension candidates. Maximal degree in co-relation 790. Up to 81 conditions per place. [2021-11-09 09:44:20,057 INFO L132 encePairwiseOnDemand]: 291/298 looper letters, 4 selfloop transitions, 6 changer transitions 0/261 dead transitions. [2021-11-09 09:44:20,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 261 transitions, 604 flow [2021-11-09 09:44:20,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:44:20,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-09 09:44:20,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1095 transitions. [2021-11-09 09:44:20,063 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9186241610738255 [2021-11-09 09:44:20,063 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1095 transitions. [2021-11-09 09:44:20,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1095 transitions. [2021-11-09 09:44:20,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:44:20,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1095 transitions. [2021-11-09 09:44:20,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 273.75) internal successors, (1095), 4 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:20,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:20,077 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:20,078 INFO L186 Difference]: Start difference. First operand has 263 places, 261 transitions, 586 flow. Second operand 4 states and 1095 transitions. [2021-11-09 09:44:20,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 261 transitions, 604 flow [2021-11-09 09:44:20,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 261 transitions, 594 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-09 09:44:20,090 INFO L242 Difference]: Finished difference. Result has 265 places, 261 transitions, 592 flow [2021-11-09 09:44:20,091 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=592, PETRI_PLACES=265, PETRI_TRANSITIONS=261} [2021-11-09 09:44:20,092 INFO L334 CegarLoopForPetriNet]: 270 programPoint places, -5 predicate places. [2021-11-09 09:44:20,092 INFO L470 AbstractCegarLoop]: Abstraction has has 265 places, 261 transitions, 592 flow [2021-11-09 09:44:20,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:20,094 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:44:20,094 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:44:20,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 09:44:20,095 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:44:20,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:44:20,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1732081246, now seen corresponding path program 1 times [2021-11-09 09:44:20,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:44:20,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612424594] [2021-11-09 09:44:20,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:44:20,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:44:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:44:20,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:44:20,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:44:20,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612424594] [2021-11-09 09:44:20,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612424594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:44:20,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:44:20,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:44:20,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444988849] [2021-11-09 09:44:20,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:44:20,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:44:20,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:44:20,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:44:20,274 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 298 [2021-11-09 09:44:20,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 261 transitions, 592 flow. Second operand has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:20,277 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:44:20,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 298 [2021-11-09 09:44:20,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:44:20,392 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1216] L131-->L135: Formula: (and (= v_~manager_back~0_122 (+ v_~manager_back~0_123 1)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1) (not (= v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1 0)) (not (= (ite (and (<= 0 v_~manager_back~0_123) (< v_~manager_back~0_123 v_~manager_size~0_46)) 1 0) 0)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| (ite (= (select (select |v_#memory_int_147| v_~manager~0.base_65) (+ v_~manager~0.offset_65 (* v_~manager_back~0_123 4))) v_~update~0_61) 1 0))) InVars {~manager~0.offset=v_~manager~0.offset_65, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_123, ~manager_size~0=v_~manager_size~0_46, ~update~0=v_~update~0_61} OutVars{~manager~0.offset=v_~manager~0.offset_65, thread4Thread1of1ForFork3_#t~mem32=|v_thread4Thread1of1ForFork3_#t~mem32_1|, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_122, ~manager_size~0=v_~manager_size~0_46, thread4Thread1of1ForFork3_#t~post33=|v_thread4Thread1of1ForFork3_#t~post33_1|, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1|, thread4Thread1of1ForFork3_assume_abort_if_not_~cond=v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1, ~update~0=v_~update~0_61} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_#t~mem32, ~manager_back~0, thread4Thread1of1ForFork3_#t~post33, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond, thread4Thread1of1ForFork3_assume_abort_if_not_~cond][241], [Black: 310#(<= ~manager_size~0 0), 139#L105true, Black: 314#(and (= ULTIMATE.start_create_fresh_int_array_~i~0 0) (<= ~manager_size~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~manager_size~0 ULTIMATE.start_create_fresh_int_array_~size)), 289#true, 247#L123true, 162#L57true, Black: 324#(<= ~node1_back~0 ~node1_front~0), 328#true, Black: 330#(<= ~node2_back~0 ~node2_front~0), 81#L179-4true, Black: 294#(= ~safe~0 1), 334#true, 176#L135true]) [2021-11-09 09:44:20,392 INFO L384 tUnfolder$Statistics]: this new event has 198 ancestors and is cut-off event [2021-11-09 09:44:20,392 INFO L387 tUnfolder$Statistics]: existing Event has 194 ancestors and is cut-off event [2021-11-09 09:44:20,392 INFO L387 tUnfolder$Statistics]: existing Event has 198 ancestors and is cut-off event [2021-11-09 09:44:20,393 INFO L387 tUnfolder$Statistics]: existing Event has 198 ancestors and is cut-off event [2021-11-09 09:44:20,447 INFO L129 PetriNetUnfolder]: 111/595 cut-off events. [2021-11-09 09:44:20,447 INFO L130 PetriNetUnfolder]: For 96/98 co-relation queries the response was YES. [2021-11-09 09:44:20,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 595 events. 111/595 cut-off events. For 96/98 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2084 event pairs, 43 based on Foata normal form. 5/538 useless extension candidates. Maximal degree in co-relation 871. Up to 92 conditions per place. [2021-11-09 09:44:20,457 INFO L132 encePairwiseOnDemand]: 295/298 looper letters, 5 selfloop transitions, 2 changer transitions 0/261 dead transitions. [2021-11-09 09:44:20,458 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 261 transitions, 604 flow [2021-11-09 09:44:20,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:44:20,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-09 09:44:20,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 830 transitions. [2021-11-09 09:44:20,463 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9284116331096197 [2021-11-09 09:44:20,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 830 transitions. [2021-11-09 09:44:20,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 830 transitions. [2021-11-09 09:44:20,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:44:20,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 830 transitions. [2021-11-09 09:44:20,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:20,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:20,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:20,472 INFO L186 Difference]: Start difference. First operand has 265 places, 261 transitions, 592 flow. Second operand 3 states and 830 transitions. [2021-11-09 09:44:20,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 261 transitions, 604 flow [2021-11-09 09:44:20,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 261 transitions, 594 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-09 09:44:20,483 INFO L242 Difference]: Finished difference. Result has 266 places, 261 transitions, 590 flow [2021-11-09 09:44:20,484 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=590, PETRI_PLACES=266, PETRI_TRANSITIONS=261} [2021-11-09 09:44:20,484 INFO L334 CegarLoopForPetriNet]: 270 programPoint places, -4 predicate places. [2021-11-09 09:44:20,484 INFO L470 AbstractCegarLoop]: Abstraction has has 266 places, 261 transitions, 590 flow [2021-11-09 09:44:20,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:20,485 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:44:20,486 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:44:20,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 09:44:20,487 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:44:20,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:44:20,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1440501456, now seen corresponding path program 1 times [2021-11-09 09:44:20,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:44:20,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115091530] [2021-11-09 09:44:20,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:44:20,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:44:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:44:20,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:44:20,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:44:20,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115091530] [2021-11-09 09:44:20,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115091530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:44:20,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:44:20,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:44:20,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109836292] [2021-11-09 09:44:20,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:44:20,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:44:20,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:44:20,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:44:20,637 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 298 [2021-11-09 09:44:20,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 261 transitions, 590 flow. Second operand has 6 states, 6 states have (on average 234.5) internal successors, (1407), 6 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:20,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:44:20,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 298 [2021-11-09 09:44:20,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:44:20,965 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1216] L131-->L135: Formula: (and (= v_~manager_back~0_122 (+ v_~manager_back~0_123 1)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1) (not (= v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1 0)) (not (= (ite (and (<= 0 v_~manager_back~0_123) (< v_~manager_back~0_123 v_~manager_size~0_46)) 1 0) 0)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| (ite (= (select (select |v_#memory_int_147| v_~manager~0.base_65) (+ v_~manager~0.offset_65 (* v_~manager_back~0_123 4))) v_~update~0_61) 1 0))) InVars {~manager~0.offset=v_~manager~0.offset_65, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_123, ~manager_size~0=v_~manager_size~0_46, ~update~0=v_~update~0_61} OutVars{~manager~0.offset=v_~manager~0.offset_65, thread4Thread1of1ForFork3_#t~mem32=|v_thread4Thread1of1ForFork3_#t~mem32_1|, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_122, ~manager_size~0=v_~manager_size~0_46, thread4Thread1of1ForFork3_#t~post33=|v_thread4Thread1of1ForFork3_#t~post33_1|, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1|, thread4Thread1of1ForFork3_assume_abort_if_not_~cond=v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1, ~update~0=v_~update~0_61} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_#t~mem32, ~manager_back~0, thread4Thread1of1ForFork3_#t~post33, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond, thread4Thread1of1ForFork3_assume_abort_if_not_~cond][269], [Black: 310#(<= ~manager_size~0 0), Black: 314#(and (= ULTIMATE.start_create_fresh_int_array_~i~0 0) (<= ~manager_size~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~manager_size~0 ULTIMATE.start_create_fresh_int_array_~size)), 139#L105true, 289#true, 247#L123true, 162#L57true, Black: 324#(<= ~node1_back~0 ~node1_front~0), 339#true, Black: 330#(<= ~node2_back~0 ~node2_front~0), 81#L179-4true, Black: 294#(= ~safe~0 1), Black: 336#(<= ~client_back~0 ~client_front~0), 334#true, 176#L135true]) [2021-11-09 09:44:20,966 INFO L384 tUnfolder$Statistics]: this new event has 205 ancestors and is cut-off event [2021-11-09 09:44:20,966 INFO L387 tUnfolder$Statistics]: existing Event has 201 ancestors and is cut-off event [2021-11-09 09:44:20,966 INFO L387 tUnfolder$Statistics]: existing Event has 205 ancestors and is cut-off event [2021-11-09 09:44:20,966 INFO L387 tUnfolder$Statistics]: existing Event has 205 ancestors and is cut-off event [2021-11-09 09:44:21,047 INFO L129 PetriNetUnfolder]: 126/786 cut-off events. [2021-11-09 09:44:21,047 INFO L130 PetriNetUnfolder]: For 140/150 co-relation queries the response was YES. [2021-11-09 09:44:21,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1220 conditions, 786 events. 126/786 cut-off events. For 140/150 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3016 event pairs, 46 based on Foata normal form. 2/712 useless extension candidates. Maximal degree in co-relation 1210. Up to 105 conditions per place. [2021-11-09 09:44:21,059 INFO L132 encePairwiseOnDemand]: 288/298 looper letters, 50 selfloop transitions, 8 changer transitions 25/290 dead transitions. [2021-11-09 09:44:21,059 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 290 transitions, 814 flow [2021-11-09 09:44:21,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:44:21,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-09 09:44:21,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2134 transitions. [2021-11-09 09:44:21,069 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7956748695003728 [2021-11-09 09:44:21,069 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2134 transitions. [2021-11-09 09:44:21,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2134 transitions. [2021-11-09 09:44:21,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:44:21,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2134 transitions. [2021-11-09 09:44:21,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 237.11111111111111) internal successors, (2134), 9 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:21,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 298.0) internal successors, (2980), 10 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:21,092 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 298.0) internal successors, (2980), 10 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:21,092 INFO L186 Difference]: Start difference. First operand has 266 places, 261 transitions, 590 flow. Second operand 9 states and 2134 transitions. [2021-11-09 09:44:21,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 290 transitions, 814 flow [2021-11-09 09:44:21,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 290 transitions, 812 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-09 09:44:21,112 INFO L242 Difference]: Finished difference. Result has 275 places, 262 transitions, 616 flow [2021-11-09 09:44:21,113 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=616, PETRI_PLACES=275, PETRI_TRANSITIONS=262} [2021-11-09 09:44:21,113 INFO L334 CegarLoopForPetriNet]: 270 programPoint places, 5 predicate places. [2021-11-09 09:44:21,114 INFO L470 AbstractCegarLoop]: Abstraction has has 275 places, 262 transitions, 616 flow [2021-11-09 09:44:21,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 234.5) internal successors, (1407), 6 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:21,115 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:44:21,115 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:44:21,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 09:44:21,116 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:44:21,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:44:21,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1744515656, now seen corresponding path program 1 times [2021-11-09 09:44:21,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:44:21,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498842666] [2021-11-09 09:44:21,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:44:21,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:44:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:44:21,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:44:21,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:44:21,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498842666] [2021-11-09 09:44:21,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498842666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:44:21,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:44:21,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:44:21,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950834147] [2021-11-09 09:44:21,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:44:21,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:44:21,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:44:21,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:44:21,287 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 298 [2021-11-09 09:44:21,290 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 262 transitions, 616 flow. Second operand has 6 states, 6 states have (on average 235.16666666666666) internal successors, (1411), 6 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:21,290 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:44:21,290 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 298 [2021-11-09 09:44:21,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:44:21,547 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1216] L131-->L135: Formula: (and (= v_~manager_back~0_122 (+ v_~manager_back~0_123 1)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1) (not (= v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1 0)) (not (= (ite (and (<= 0 v_~manager_back~0_123) (< v_~manager_back~0_123 v_~manager_size~0_46)) 1 0) 0)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| (ite (= (select (select |v_#memory_int_147| v_~manager~0.base_65) (+ v_~manager~0.offset_65 (* v_~manager_back~0_123 4))) v_~update~0_61) 1 0))) InVars {~manager~0.offset=v_~manager~0.offset_65, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_123, ~manager_size~0=v_~manager_size~0_46, ~update~0=v_~update~0_61} OutVars{~manager~0.offset=v_~manager~0.offset_65, thread4Thread1of1ForFork3_#t~mem32=|v_thread4Thread1of1ForFork3_#t~mem32_1|, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_122, ~manager_size~0=v_~manager_size~0_46, thread4Thread1of1ForFork3_#t~post33=|v_thread4Thread1of1ForFork3_#t~post33_1|, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1|, thread4Thread1of1ForFork3_assume_abort_if_not_~cond=v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1, ~update~0=v_~update~0_61} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_#t~mem32, ~manager_back~0, thread4Thread1of1ForFork3_#t~post33, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond, thread4Thread1of1ForFork3_assume_abort_if_not_~cond][255], [Black: 310#(<= ~manager_size~0 0), Black: 314#(and (= ULTIMATE.start_create_fresh_int_array_~i~0 0) (<= ~manager_size~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~manager_size~0 ULTIMATE.start_create_fresh_int_array_~size)), 139#L105true, 289#true, Black: 344#(<= ~client_size~0 0), Black: 348#(and (= ULTIMATE.start_create_fresh_int_array_~i~0 0) (<= ~client_size~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~client_size~0 ULTIMATE.start_create_fresh_int_array_~size)), 247#L123true, 162#L57true, Black: 324#(<= ~node1_back~0 ~node1_front~0), 339#true, Black: 330#(<= ~node2_back~0 ~node2_front~0), 81#L179-4true, Black: 294#(= ~safe~0 1), Black: 336#(<= ~client_back~0 ~client_front~0), 356#true, 176#L135true]) [2021-11-09 09:44:21,547 INFO L384 tUnfolder$Statistics]: this new event has 212 ancestors and is cut-off event [2021-11-09 09:44:21,548 INFO L387 tUnfolder$Statistics]: existing Event has 212 ancestors and is cut-off event [2021-11-09 09:44:21,548 INFO L387 tUnfolder$Statistics]: existing Event has 208 ancestors and is cut-off event [2021-11-09 09:44:21,548 INFO L387 tUnfolder$Statistics]: existing Event has 212 ancestors and is cut-off event [2021-11-09 09:44:21,614 INFO L129 PetriNetUnfolder]: 113/717 cut-off events. [2021-11-09 09:44:21,614 INFO L130 PetriNetUnfolder]: For 157/168 co-relation queries the response was YES. [2021-11-09 09:44:21,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1130 conditions, 717 events. 113/717 cut-off events. For 157/168 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2605 event pairs, 44 based on Foata normal form. 2/650 useless extension candidates. Maximal degree in co-relation 1118. Up to 94 conditions per place. [2021-11-09 09:44:21,627 INFO L132 encePairwiseOnDemand]: 288/298 looper letters, 51 selfloop transitions, 8 changer transitions 13/279 dead transitions. [2021-11-09 09:44:21,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 279 transitions, 794 flow [2021-11-09 09:44:21,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:44:21,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-09 09:44:21,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2122 transitions. [2021-11-09 09:44:21,636 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7912005965697241 [2021-11-09 09:44:21,637 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2122 transitions. [2021-11-09 09:44:21,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2122 transitions. [2021-11-09 09:44:21,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:44:21,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2122 transitions. [2021-11-09 09:44:21,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 235.77777777777777) internal successors, (2122), 9 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:21,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 298.0) internal successors, (2980), 10 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:21,658 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 298.0) internal successors, (2980), 10 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:21,658 INFO L186 Difference]: Start difference. First operand has 275 places, 262 transitions, 616 flow. Second operand 9 states and 2122 transitions. [2021-11-09 09:44:21,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 279 transitions, 794 flow [2021-11-09 09:44:21,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 279 transitions, 776 flow, removed 1 selfloop flow, removed 6 redundant places. [2021-11-09 09:44:21,670 INFO L242 Difference]: Finished difference. Result has 277 places, 263 transitions, 626 flow [2021-11-09 09:44:21,671 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=626, PETRI_PLACES=277, PETRI_TRANSITIONS=263} [2021-11-09 09:44:21,671 INFO L334 CegarLoopForPetriNet]: 270 programPoint places, 7 predicate places. [2021-11-09 09:44:21,671 INFO L470 AbstractCegarLoop]: Abstraction has has 277 places, 263 transitions, 626 flow [2021-11-09 09:44:21,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 235.16666666666666) internal successors, (1411), 6 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:21,673 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:44:21,674 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:44:21,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 09:44:21,674 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:44:21,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:44:21,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1777819900, now seen corresponding path program 1 times [2021-11-09 09:44:21,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:44:21,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041081222] [2021-11-09 09:44:21,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:44:21,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:44:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:44:21,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:44:21,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:44:21,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041081222] [2021-11-09 09:44:21,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041081222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:44:21,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:44:21,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:44:21,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038925878] [2021-11-09 09:44:21,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:44:21,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:44:21,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:44:21,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:44:21,851 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 298 [2021-11-09 09:44:21,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 263 transitions, 626 flow. Second operand has 6 states, 6 states have (on average 235.83333333333334) internal successors, (1415), 6 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:21,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:44:21,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 298 [2021-11-09 09:44:21,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:44:22,101 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1216] L131-->L135: Formula: (and (= v_~manager_back~0_122 (+ v_~manager_back~0_123 1)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1) (not (= v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1 0)) (not (= (ite (and (<= 0 v_~manager_back~0_123) (< v_~manager_back~0_123 v_~manager_size~0_46)) 1 0) 0)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1| (ite (= (select (select |v_#memory_int_147| v_~manager~0.base_65) (+ v_~manager~0.offset_65 (* v_~manager_back~0_123 4))) v_~update~0_61) 1 0))) InVars {~manager~0.offset=v_~manager~0.offset_65, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_123, ~manager_size~0=v_~manager_size~0_46, ~update~0=v_~update~0_61} OutVars{~manager~0.offset=v_~manager~0.offset_65, thread4Thread1of1ForFork3_#t~mem32=|v_thread4Thread1of1ForFork3_#t~mem32_1|, ~manager~0.base=v_~manager~0.base_65, #memory_int=|v_#memory_int_147|, ~manager_back~0=v_~manager_back~0_122, ~manager_size~0=v_~manager_size~0_46, thread4Thread1of1ForFork3_#t~post33=|v_thread4Thread1of1ForFork3_#t~post33_1|, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_1|, thread4Thread1of1ForFork3_assume_abort_if_not_~cond=v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_1, ~update~0=v_~update~0_61} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_#t~mem32, ~manager_back~0, thread4Thread1of1ForFork3_#t~post33, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond, thread4Thread1of1ForFork3_assume_abort_if_not_~cond][245], [Black: 310#(<= ~manager_size~0 0), Black: 314#(and (= ULTIMATE.start_create_fresh_int_array_~i~0 0) (<= ~manager_size~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~manager_size~0 ULTIMATE.start_create_fresh_int_array_~size)), 139#L105true, 289#true, Black: 348#(and (= ULTIMATE.start_create_fresh_int_array_~i~0 0) (<= ~client_size~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~client_size~0 ULTIMATE.start_create_fresh_int_array_~size)), 247#L123true, 162#L57true, Black: 324#(<= ~node1_back~0 ~node1_front~0), Black: 330#(<= ~node2_back~0 ~node2_front~0), 81#L179-4true, Black: 294#(= ~safe~0 1), Black: 336#(<= ~client_back~0 ~client_front~0), Black: 365#(and (= ULTIMATE.start_create_fresh_int_array_~i~0 0) (<= ~node1_size~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~node1_size~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), Black: 361#(<= ~node1_size~0 0), 380#(and (<= ~node2_size~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~node2_size~0 ULTIMATE.start_create_fresh_int_array_~size)), 356#true, 176#L135true]) [2021-11-09 09:44:22,102 INFO L384 tUnfolder$Statistics]: this new event has 219 ancestors and is cut-off event [2021-11-09 09:44:22,102 INFO L387 tUnfolder$Statistics]: existing Event has 219 ancestors and is cut-off event [2021-11-09 09:44:22,103 INFO L387 tUnfolder$Statistics]: existing Event has 215 ancestors and is cut-off event [2021-11-09 09:44:22,103 INFO L387 tUnfolder$Statistics]: existing Event has 219 ancestors and is cut-off event [2021-11-09 09:44:22,164 INFO L129 PetriNetUnfolder]: 115/702 cut-off events. [2021-11-09 09:44:22,164 INFO L130 PetriNetUnfolder]: For 164/182 co-relation queries the response was YES. [2021-11-09 09:44:22,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1126 conditions, 702 events. 115/702 cut-off events. For 164/182 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2672 event pairs, 44 based on Foata normal form. 2/636 useless extension candidates. Maximal degree in co-relation 1113. Up to 97 conditions per place. [2021-11-09 09:44:22,177 INFO L132 encePairwiseOnDemand]: 290/298 looper letters, 54 selfloop transitions, 6 changer transitions 1/268 dead transitions. [2021-11-09 09:44:22,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 268 transitions, 758 flow [2021-11-09 09:44:22,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:44:22,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-09 09:44:22,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1654 transitions. [2021-11-09 09:44:22,186 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7929050814956855 [2021-11-09 09:44:22,186 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1654 transitions. [2021-11-09 09:44:22,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1654 transitions. [2021-11-09 09:44:22,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:44:22,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1654 transitions. [2021-11-09 09:44:22,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 236.28571428571428) internal successors, (1654), 7 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:22,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 298.0) internal successors, (2384), 8 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:22,227 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 298.0) internal successors, (2384), 8 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:22,227 INFO L186 Difference]: Start difference. First operand has 277 places, 263 transitions, 626 flow. Second operand 7 states and 1654 transitions. [2021-11-09 09:44:22,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 268 transitions, 758 flow [2021-11-09 09:44:22,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 268 transitions, 740 flow, removed 1 selfloop flow, removed 6 redundant places. [2021-11-09 09:44:22,238 INFO L242 Difference]: Finished difference. Result has 277 places, 264 transitions, 630 flow [2021-11-09 09:44:22,240 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=630, PETRI_PLACES=277, PETRI_TRANSITIONS=264} [2021-11-09 09:44:22,240 INFO L334 CegarLoopForPetriNet]: 270 programPoint places, 7 predicate places. [2021-11-09 09:44:22,241 INFO L470 AbstractCegarLoop]: Abstraction has has 277 places, 264 transitions, 630 flow [2021-11-09 09:44:22,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 235.83333333333334) internal successors, (1415), 6 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:22,242 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:44:22,243 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:44:22,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 09:44:22,243 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:44:22,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:44:22,244 INFO L85 PathProgramCache]: Analyzing trace with hash -460144729, now seen corresponding path program 1 times [2021-11-09 09:44:22,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:44:22,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914772213] [2021-11-09 09:44:22,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:44:22,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:44:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:44:22,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-09 09:44:22,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:44:22,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914772213] [2021-11-09 09:44:22,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914772213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:44:22,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:44:22,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:44:22,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035569269] [2021-11-09 09:44:22,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:44:22,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:44:22,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:44:22,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:44:22,573 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 298 [2021-11-09 09:44:22,575 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 264 transitions, 630 flow. Second operand has 3 states, 3 states have (on average 272.3333333333333) internal successors, (817), 3 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:22,575 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:44:22,575 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 298 [2021-11-09 09:44:22,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:44:22,727 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1217] L135-->L141: Formula: (let ((.cse1 (not |v_thread4_#t~short35_44|))) (and (or (and |v_thread4_#t~short35_44| (let ((.cse0 (= |v_thread4_#t~mem34_28| v_~ok~0_67))) (or (and |v_thread4_#t~short35_43| .cse0) (and (not |v_thread4_#t~short35_43|) (not .cse0)))) (= (select (select |v_#memory_int_143| v_~client~0.base_23) (+ v_~client~0.offset_23 (* v_~client_front~0_33 4))) |v_thread4_#t~mem34_28|)) (and (= |v_thread4_#t~mem34_28| |v_thread4Thread1of1ForFork3_#t~mem34_1|) .cse1 (= |v_thread4_#t~short35_43| |v_thread4_#t~short35_44|))) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_3| v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_3) (not (= v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_3 0)) (let ((.cse2 (= 0 (mod v_~safe~0_91 256)))) (or (and |v_thread4_#t~short35_44| (not .cse2)) (and .cse2 .cse1))) (= (+ v_~client_front~0_33 1) v_~client_front~0_32) (= v_~safe~0_90 (ite (= (ite |v_thread4_#t~short35_43| 1 0) 0) 0 1)) (= (ite (and (<= 0 v_~client_front~0_33) (< v_~client_back~0_44 v_~client_size~0_22) (< v_~client_front~0_33 v_~client_back~0_44)) 1 0) |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_3|))) InVars {~client~0.offset=v_~client~0.offset_23, ~client_back~0=v_~client_back~0_44, ~client_front~0=v_~client_front~0_33, ~ok~0=v_~ok~0_67, ~safe~0=v_~safe~0_91, #memory_int=|v_#memory_int_143|, thread4Thread1of1ForFork3_#t~mem34=|v_thread4Thread1of1ForFork3_#t~mem34_1|, ~client_size~0=v_~client_size~0_22, ~client~0.base=v_~client~0.base_23} OutVars{~client~0.offset=v_~client~0.offset_23, ~client_back~0=v_~client_back~0_44, ~ok~0=v_~ok~0_67, thread4Thread1of1ForFork3_#t~short35=|v_thread4Thread1of1ForFork3_#t~short35_1|, thread4Thread1of1ForFork3_#t~post36=|v_thread4Thread1of1ForFork3_#t~post36_1|, ~client_front~0=v_~client_front~0_32, ~safe~0=v_~safe~0_90, #memory_int=|v_#memory_int_143|, thread4Thread1of1ForFork3_#t~mem34=|v_thread4Thread1of1ForFork3_#t~mem34_2|, ~client_size~0=v_~client_size~0_22, ~client~0.base=v_~client~0.base_23, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond_3|, thread4Thread1of1ForFork3_assume_abort_if_not_~cond=v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond_3} AuxVars[|v_thread4_#t~mem34_28|, |v_thread4_#t~short35_44|, |v_thread4_#t~short35_43|] AssignedVars[~client_front~0, ~safe~0, thread4Thread1of1ForFork3_#t~short35, thread4Thread1of1ForFork3_#t~mem34, thread4Thread1of1ForFork3_#t~post36, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond, thread4Thread1of1ForFork3_assume_abort_if_not_~cond][247], [Black: 310#(<= ~manager_size~0 0), Black: 314#(and (= ULTIMATE.start_create_fresh_int_array_~i~0 0) (<= ~manager_size~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~manager_size~0 ULTIMATE.start_create_fresh_int_array_~size)), Black: 382#(and (= ULTIMATE.start_create_fresh_int_array_~i~0 0) (<= ~node2_size~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~node2_size~0 ULTIMATE.start_create_fresh_int_array_~size)), 289#true, Black: 384#(and (= ULTIMATE.start_create_fresh_int_array_~i~0 0) (<= ~node2_size~0 0) (<= ~node2_size~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~node2_size~0 ULTIMATE.start_create_fresh_int_array_~size)), Black: 348#(and (= ULTIMATE.start_create_fresh_int_array_~i~0 0) (<= ~client_size~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~client_size~0 ULTIMATE.start_create_fresh_int_array_~size)), Black: 324#(<= ~node1_back~0 ~node1_front~0), 187#L117true, 254#L99true, Black: 330#(<= ~node2_back~0 ~node2_front~0), 81#L179-4true, 167#L87true, Black: 294#(= ~safe~0 1), Black: 336#(<= ~client_back~0 ~client_front~0), Black: 365#(and (= ULTIMATE.start_create_fresh_int_array_~i~0 0) (<= ~node1_size~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~node1_size~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), 380#(and (<= ~node2_size~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~node2_size~0 ULTIMATE.start_create_fresh_int_array_~size)), 7#L141true, 388#true]) [2021-11-09 09:44:22,728 INFO L384 tUnfolder$Statistics]: this new event has 231 ancestors and is cut-off event [2021-11-09 09:44:22,728 INFO L387 tUnfolder$Statistics]: existing Event has 223 ancestors and is cut-off event [2021-11-09 09:44:22,728 INFO L387 tUnfolder$Statistics]: existing Event has 219 ancestors and is cut-off event [2021-11-09 09:44:22,728 INFO L387 tUnfolder$Statistics]: existing Event has 227 ancestors and is cut-off event [2021-11-09 09:44:22,731 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1185] L53-->L57: Formula: (let ((.cse0 (not |v_thread1_#t~short5_42|))) (and (= |v_thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond_1| v_thread1Thread1of1ForFork2_assume_abort_if_not_~cond_1) (= |v_thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond_1| (ite (and (<= 0 v_~manager_front~0_81) (< v_~manager_front~0_81 v_~manager_size~0_44) (< v_~manager_front~0_81 v_~manager_back~0_116)) 1 0)) (let ((.cse1 (= (mod v_~safe~0_61 256) 0))) (or (and .cse0 .cse1) (and |v_thread1_#t~short5_42| (not .cse1)))) (= v_~manager_front~0_80 (+ v_~manager_front~0_81 1)) (not (= v_thread1Thread1of1ForFork2_assume_abort_if_not_~cond_1 0)) (= v_~safe~0_60 (ite (= (ite |v_thread1_#t~short5_41| 1 0) 0) 0 1)) (or (and (= |v_thread1_#t~mem4_26| |v_thread1Thread1of1ForFork2_#t~mem4_1|) (= |v_thread1_#t~short5_42| |v_thread1_#t~short5_41|) .cse0) (and (let ((.cse2 (= |v_thread1_#t~mem4_26| v_~update~0_49))) (or (and (not |v_thread1_#t~short5_41|) (not .cse2)) (and .cse2 |v_thread1_#t~short5_41|))) (= (select (select |v_#memory_int_119| v_~manager~0.base_55) (+ (* v_~manager_front~0_81 4) v_~manager~0.offset_55)) |v_thread1_#t~mem4_26|) |v_thread1_#t~short5_42|)))) InVars {~manager_front~0=v_~manager_front~0_81, ~manager~0.offset=v_~manager~0.offset_55, ~manager~0.base=v_~manager~0.base_55, thread1Thread1of1ForFork2_#t~mem4=|v_thread1Thread1of1ForFork2_#t~mem4_1|, ~safe~0=v_~safe~0_61, #memory_int=|v_#memory_int_119|, ~manager_back~0=v_~manager_back~0_116, ~manager_size~0=v_~manager_size~0_44, ~update~0=v_~update~0_49} OutVars{thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond=|v_thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond_1|, thread1Thread1of1ForFork2_assume_abort_if_not_~cond=v_thread1Thread1of1ForFork2_assume_abort_if_not_~cond_1, ~manager~0.offset=v_~manager~0.offset_55, ~manager~0.base=v_~manager~0.base_55, thread1Thread1of1ForFork2_#t~short5=|v_thread1Thread1of1ForFork2_#t~short5_1|, ~manager_back~0=v_~manager_back~0_116, thread1Thread1of1ForFork2_#t~post6=|v_thread1Thread1of1ForFork2_#t~post6_1|, ~manager_front~0=v_~manager_front~0_80, thread1Thread1of1ForFork2_#t~mem4=|v_thread1Thread1of1ForFork2_#t~mem4_2|, ~safe~0=v_~safe~0_60, #memory_int=|v_#memory_int_119|, ~manager_size~0=v_~manager_size~0_44, ~update~0=v_~update~0_49} AuxVars[|v_thread1_#t~short5_42|, |v_thread1_#t~mem4_26|, |v_thread1_#t~short5_41|] AssignedVars[~manager_front~0, thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond, thread1Thread1of1ForFork2_assume_abort_if_not_~cond, thread1Thread1of1ForFork2_#t~mem4, ~safe~0, thread1Thread1of1ForFork2_#t~short5, thread1Thread1of1ForFork2_#t~post6][248], [Black: 310#(<= ~manager_size~0 0), Black: 314#(and (= ULTIMATE.start_create_fresh_int_array_~i~0 0) (<= ~manager_size~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~manager_size~0 ULTIMATE.start_create_fresh_int_array_~size)), Black: 382#(and (= ULTIMATE.start_create_fresh_int_array_~i~0 0) (<= ~node2_size~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~node2_size~0 ULTIMATE.start_create_fresh_int_array_~size)), 289#true, Black: 384#(and (= ULTIMATE.start_create_fresh_int_array_~i~0 0) (<= ~node2_size~0 0) (<= ~node2_size~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~node2_size~0 ULTIMATE.start_create_fresh_int_array_~size)), Black: 348#(and (= ULTIMATE.start_create_fresh_int_array_~i~0 0) (<= ~client_size~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~client_size~0 ULTIMATE.start_create_fresh_int_array_~size)), 162#L57true, Black: 324#(<= ~node1_back~0 ~node1_front~0), 187#L117true, 254#L99true, Black: 330#(<= ~node2_back~0 ~node2_front~0), 81#L179-4true, Black: 294#(= ~safe~0 1), Black: 336#(<= ~client_back~0 ~client_front~0), Black: 365#(and (= ULTIMATE.start_create_fresh_int_array_~i~0 0) (<= ~node1_size~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~node1_size~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), 380#(and (<= ~node2_size~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~node2_size~0 ULTIMATE.start_create_fresh_int_array_~size)), 176#L135true, 388#true]) [2021-11-09 09:44:22,731 INFO L384 tUnfolder$Statistics]: this new event has 233 ancestors and is cut-off event [2021-11-09 09:44:22,731 INFO L387 tUnfolder$Statistics]: existing Event has 225 ancestors and is cut-off event [2021-11-09 09:44:22,731 INFO L387 tUnfolder$Statistics]: existing Event has 221 ancestors and is cut-off event [2021-11-09 09:44:22,732 INFO L387 tUnfolder$Statistics]: existing Event has 229 ancestors and is cut-off event [2021-11-09 09:44:22,750 INFO L129 PetriNetUnfolder]: 112/563 cut-off events. [2021-11-09 09:44:22,750 INFO L130 PetriNetUnfolder]: For 157/161 co-relation queries the response was YES. [2021-11-09 09:44:22,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 563 events. 112/563 cut-off events. For 157/161 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1501 event pairs, 32 based on Foata normal form. 1/507 useless extension candidates. Maximal degree in co-relation 911. Up to 94 conditions per place. [2021-11-09 09:44:22,761 INFO L132 encePairwiseOnDemand]: 295/298 looper letters, 10 selfloop transitions, 2 changer transitions 0/265 dead transitions. [2021-11-09 09:44:22,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 265 transitions, 658 flow [2021-11-09 09:44:22,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:44:22,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-09 09:44:22,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 822 transitions. [2021-11-09 09:44:22,765 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9194630872483222 [2021-11-09 09:44:22,766 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 822 transitions. [2021-11-09 09:44:22,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 822 transitions. [2021-11-09 09:44:22,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:44:22,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 822 transitions. [2021-11-09 09:44:22,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:22,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:22,774 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:22,775 INFO L186 Difference]: Start difference. First operand has 277 places, 264 transitions, 630 flow. Second operand 3 states and 822 transitions. [2021-11-09 09:44:22,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 265 transitions, 658 flow [2021-11-09 09:44:22,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 265 transitions, 646 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-11-09 09:44:22,785 INFO L242 Difference]: Finished difference. Result has 274 places, 265 transitions, 632 flow [2021-11-09 09:44:22,786 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=632, PETRI_PLACES=274, PETRI_TRANSITIONS=265} [2021-11-09 09:44:22,787 INFO L334 CegarLoopForPetriNet]: 270 programPoint places, 4 predicate places. [2021-11-09 09:44:22,787 INFO L470 AbstractCegarLoop]: Abstraction has has 274 places, 265 transitions, 632 flow [2021-11-09 09:44:22,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.3333333333333) internal successors, (817), 3 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:22,788 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:44:22,788 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:44:22,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 09:44:22,789 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:44:22,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:44:22,790 INFO L85 PathProgramCache]: Analyzing trace with hash -2110378917, now seen corresponding path program 1 times [2021-11-09 09:44:22,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:44:22,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684066480] [2021-11-09 09:44:22,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:44:22,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:44:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:44:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-09 09:44:23,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:44:23,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684066480] [2021-11-09 09:44:23,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684066480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:44:23,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:44:23,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:44:23,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423404887] [2021-11-09 09:44:23,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:44:23,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:44:23,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:44:23,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:44:23,106 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 298 [2021-11-09 09:44:23,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 265 transitions, 632 flow. Second operand has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:23,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:44:23,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 298 [2021-11-09 09:44:23,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:44:23,436 INFO L129 PetriNetUnfolder]: 244/1049 cut-off events. [2021-11-09 09:44:23,436 INFO L130 PetriNetUnfolder]: For 421/434 co-relation queries the response was YES. [2021-11-09 09:44:23,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1892 conditions, 1049 events. 244/1049 cut-off events. For 421/434 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4965 event pairs, 80 based on Foata normal form. 21/973 useless extension candidates. Maximal degree in co-relation 1878. Up to 184 conditions per place. [2021-11-09 09:44:23,457 INFO L132 encePairwiseOnDemand]: 291/298 looper letters, 9 selfloop transitions, 12 changer transitions 0/274 dead transitions. [2021-11-09 09:44:23,457 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 274 transitions, 712 flow [2021-11-09 09:44:23,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:44:23,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-09 09:44:23,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1102 transitions. [2021-11-09 09:44:23,462 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.924496644295302 [2021-11-09 09:44:23,462 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1102 transitions. [2021-11-09 09:44:23,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1102 transitions. [2021-11-09 09:44:23,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:44:23,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1102 transitions. [2021-11-09 09:44:23,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 275.5) internal successors, (1102), 4 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:23,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:23,473 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:23,473 INFO L186 Difference]: Start difference. First operand has 274 places, 265 transitions, 632 flow. Second operand 4 states and 1102 transitions. [2021-11-09 09:44:23,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 274 transitions, 712 flow [2021-11-09 09:44:23,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 274 transitions, 708 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-11-09 09:44:23,484 INFO L242 Difference]: Finished difference. Result has 278 places, 274 transitions, 728 flow [2021-11-09 09:44:23,485 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=728, PETRI_PLACES=278, PETRI_TRANSITIONS=274} [2021-11-09 09:44:23,485 INFO L334 CegarLoopForPetriNet]: 270 programPoint places, 8 predicate places. [2021-11-09 09:44:23,485 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 274 transitions, 728 flow [2021-11-09 09:44:23,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:23,486 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:44:23,486 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:44:23,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 09:44:23,487 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:44:23,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:44:23,488 INFO L85 PathProgramCache]: Analyzing trace with hash -877967679, now seen corresponding path program 1 times [2021-11-09 09:44:23,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:44:23,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898232305] [2021-11-09 09:44:23,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:44:23,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:44:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:44:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:44:23,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:44:23,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898232305] [2021-11-09 09:44:23,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898232305] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:44:23,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478290951] [2021-11-09 09:44:23,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:44:23,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:44:23,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:44:23,703 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:44:23,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 09:44:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:44:23,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 09:44:23,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:44:25,054 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-09 09:44:25,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478290951] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:44:25,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:44:25,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-11-09 09:44:25,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162054361] [2021-11-09 09:44:25,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 09:44:25,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:44:25,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 09:44:25,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:44:25,063 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 298 [2021-11-09 09:44:25,068 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 274 transitions, 728 flow. Second operand has 13 states, 13 states have (on average 223.69230769230768) internal successors, (2908), 13 states have internal predecessors, (2908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:25,068 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:44:25,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 298 [2021-11-09 09:44:25,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:44:25,989 INFO L129 PetriNetUnfolder]: 248/1258 cut-off events. [2021-11-09 09:44:25,989 INFO L130 PetriNetUnfolder]: For 909/967 co-relation queries the response was YES. [2021-11-09 09:44:25,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2641 conditions, 1258 events. 248/1258 cut-off events. For 909/967 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5695 event pairs, 81 based on Foata normal form. 9/1166 useless extension candidates. Maximal degree in co-relation 2625. Up to 272 conditions per place. [2021-11-09 09:44:26,012 INFO L132 encePairwiseOnDemand]: 278/298 looper letters, 74 selfloop transitions, 11 changer transitions 45/327 dead transitions. [2021-11-09 09:44:26,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 327 transitions, 1138 flow [2021-11-09 09:44:26,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 09:44:26,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-09 09:44:26,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3167 transitions. [2021-11-09 09:44:26,027 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7591083413231065 [2021-11-09 09:44:26,027 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3167 transitions. [2021-11-09 09:44:26,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3167 transitions. [2021-11-09 09:44:26,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:44:26,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3167 transitions. [2021-11-09 09:44:26,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 226.21428571428572) internal successors, (3167), 14 states have internal predecessors, (3167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:26,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 298.0) internal successors, (4470), 15 states have internal predecessors, (4470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:26,059 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 298.0) internal successors, (4470), 15 states have internal predecessors, (4470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:26,059 INFO L186 Difference]: Start difference. First operand has 278 places, 274 transitions, 728 flow. Second operand 14 states and 3167 transitions. [2021-11-09 09:44:26,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 327 transitions, 1138 flow [2021-11-09 09:44:26,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 327 transitions, 1112 flow, removed 13 selfloop flow, removed 0 redundant places. [2021-11-09 09:44:26,075 INFO L242 Difference]: Finished difference. Result has 297 places, 277 transitions, 776 flow [2021-11-09 09:44:26,076 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=776, PETRI_PLACES=297, PETRI_TRANSITIONS=277} [2021-11-09 09:44:26,076 INFO L334 CegarLoopForPetriNet]: 270 programPoint places, 27 predicate places. [2021-11-09 09:44:26,077 INFO L470 AbstractCegarLoop]: Abstraction has has 297 places, 277 transitions, 776 flow [2021-11-09 09:44:26,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 223.69230769230768) internal successors, (2908), 13 states have internal predecessors, (2908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:26,078 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:44:26,079 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:44:26,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-09 09:44:26,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-09 09:44:26,295 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:44:26,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:44:26,296 INFO L85 PathProgramCache]: Analyzing trace with hash 173158285, now seen corresponding path program 2 times [2021-11-09 09:44:26,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:44:26,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464555170] [2021-11-09 09:44:26,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:44:26,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:44:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:44:26,564 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:44:26,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:44:26,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464555170] [2021-11-09 09:44:26,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464555170] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:44:26,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110763742] [2021-11-09 09:44:26,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:44:26,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:44:26,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:44:26,567 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:44:26,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 09:44:26,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:44:26,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:44:26,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 09:44:26,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:44:28,120 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:44:28,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110763742] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:44:28,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:44:28,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2021-11-09 09:44:28,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431174381] [2021-11-09 09:44:28,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-09 09:44:28,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:44:28,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-09 09:44:28,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-11-09 09:44:28,135 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 298 [2021-11-09 09:44:28,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 277 transitions, 776 flow. Second operand has 19 states, 19 states have (on average 222.42105263157896) internal successors, (4226), 19 states have internal predecessors, (4226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:28,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:44:28,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 298 [2021-11-09 09:44:28,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:44:29,194 INFO L129 PetriNetUnfolder]: 252/1294 cut-off events. [2021-11-09 09:44:29,194 INFO L130 PetriNetUnfolder]: For 784/839 co-relation queries the response was YES. [2021-11-09 09:44:29,208 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2660 conditions, 1294 events. 252/1294 cut-off events. For 784/839 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5849 event pairs, 82 based on Foata normal form. 15/1204 useless extension candidates. Maximal degree in co-relation 2637. Up to 272 conditions per place. [2021-11-09 09:44:29,220 INFO L132 encePairwiseOnDemand]: 270/298 looper letters, 76 selfloop transitions, 14 changer transitions 51/338 dead transitions. [2021-11-09 09:44:29,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 338 transitions, 1276 flow [2021-11-09 09:44:29,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-09 09:44:29,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-09 09:44:29,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4704 transitions. [2021-11-09 09:44:29,240 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7516778523489933 [2021-11-09 09:44:29,240 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4704 transitions. [2021-11-09 09:44:29,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4704 transitions. [2021-11-09 09:44:29,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:44:29,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4704 transitions. [2021-11-09 09:44:29,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 224.0) internal successors, (4704), 21 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:29,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 298.0) internal successors, (6556), 22 states have internal predecessors, (6556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:29,289 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 298.0) internal successors, (6556), 22 states have internal predecessors, (6556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:29,289 INFO L186 Difference]: Start difference. First operand has 297 places, 277 transitions, 776 flow. Second operand 21 states and 4704 transitions. [2021-11-09 09:44:29,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 338 transitions, 1276 flow [2021-11-09 09:44:29,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 338 transitions, 1198 flow, removed 28 selfloop flow, removed 9 redundant places. [2021-11-09 09:44:29,307 INFO L242 Difference]: Finished difference. Result has 314 places, 280 transitions, 844 flow [2021-11-09 09:44:29,308 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=844, PETRI_PLACES=314, PETRI_TRANSITIONS=280} [2021-11-09 09:44:29,309 INFO L334 CegarLoopForPetriNet]: 270 programPoint places, 44 predicate places. [2021-11-09 09:44:29,309 INFO L470 AbstractCegarLoop]: Abstraction has has 314 places, 280 transitions, 844 flow [2021-11-09 09:44:29,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 222.42105263157896) internal successors, (4226), 19 states have internal predecessors, (4226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:29,311 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:44:29,312 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:44:29,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:44:29,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-09 09:44:29,539 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:44:29,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:44:29,540 INFO L85 PathProgramCache]: Analyzing trace with hash 450275227, now seen corresponding path program 3 times [2021-11-09 09:44:29,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:44:29,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136075266] [2021-11-09 09:44:29,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:44:29,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:44:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:44:30,026 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-09 09:44:30,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:44:30,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136075266] [2021-11-09 09:44:30,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136075266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:44:30,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:44:30,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:44:30,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111463862] [2021-11-09 09:44:30,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:44:30,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:44:30,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:44:30,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:44:30,035 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 298 [2021-11-09 09:44:30,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 280 transitions, 844 flow. Second operand has 4 states, 4 states have (on average 275.75) internal successors, (1103), 4 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:30,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:44:30,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 298 [2021-11-09 09:44:30,038 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:44:30,939 INFO L129 PetriNetUnfolder]: 632/2295 cut-off events. [2021-11-09 09:44:30,940 INFO L130 PetriNetUnfolder]: For 1700/1861 co-relation queries the response was YES. [2021-11-09 09:44:30,969 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4894 conditions, 2295 events. 632/2295 cut-off events. For 1700/1861 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 15350 event pairs, 232 based on Foata normal form. 52/2084 useless extension candidates. Maximal degree in co-relation 4864. Up to 450 conditions per place. [2021-11-09 09:44:30,998 INFO L132 encePairwiseOnDemand]: 295/298 looper letters, 5 selfloop transitions, 5 changer transitions 0/283 dead transitions. [2021-11-09 09:44:30,999 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 283 transitions, 878 flow [2021-11-09 09:44:30,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:44:31,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-09 09:44:31,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1106 transitions. [2021-11-09 09:44:31,004 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9278523489932886 [2021-11-09 09:44:31,005 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1106 transitions. [2021-11-09 09:44:31,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1106 transitions. [2021-11-09 09:44:31,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:44:31,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1106 transitions. [2021-11-09 09:44:31,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 276.5) internal successors, (1106), 4 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:31,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:31,016 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:31,017 INFO L186 Difference]: Start difference. First operand has 314 places, 280 transitions, 844 flow. Second operand 4 states and 1106 transitions. [2021-11-09 09:44:31,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 283 transitions, 878 flow [2021-11-09 09:44:31,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 283 transitions, 792 flow, removed 31 selfloop flow, removed 16 redundant places. [2021-11-09 09:44:31,037 INFO L242 Difference]: Finished difference. Result has 295 places, 283 transitions, 796 flow [2021-11-09 09:44:31,038 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=796, PETRI_PLACES=295, PETRI_TRANSITIONS=283} [2021-11-09 09:44:31,038 INFO L334 CegarLoopForPetriNet]: 270 programPoint places, 25 predicate places. [2021-11-09 09:44:31,038 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 283 transitions, 796 flow [2021-11-09 09:44:31,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 275.75) internal successors, (1103), 4 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:31,039 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:44:31,040 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:44:31,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 09:44:31,040 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:44:31,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:44:31,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1883710817, now seen corresponding path program 1 times [2021-11-09 09:44:31,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:44:31,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473192298] [2021-11-09 09:44:31,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:44:31,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:44:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:44:31,511 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-09 09:44:31,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:44:31,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473192298] [2021-11-09 09:44:31,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473192298] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:44:31,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694480356] [2021-11-09 09:44:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:44:31,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:44:31,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:44:31,514 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:44:31,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 09:44:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:44:32,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 09:44:32,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:44:33,414 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-09 09:44:33,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694480356] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:44:33,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:44:33,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-11-09 09:44:33,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987879179] [2021-11-09 09:44:33,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 09:44:33,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:44:33,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 09:44:33,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:44:33,426 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 298 [2021-11-09 09:44:33,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 283 transitions, 796 flow. Second operand has 13 states, 13 states have (on average 225.30769230769232) internal successors, (2929), 13 states have internal predecessors, (2929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:33,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:44:33,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 298 [2021-11-09 09:44:33,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:44:34,929 INFO L129 PetriNetUnfolder]: 778/3179 cut-off events. [2021-11-09 09:44:34,930 INFO L130 PetriNetUnfolder]: For 2328/2536 co-relation queries the response was YES. [2021-11-09 09:44:34,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6566 conditions, 3179 events. 778/3179 cut-off events. For 2328/2536 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 23611 event pairs, 293 based on Foata normal form. 104/2907 useless extension candidates. Maximal degree in co-relation 6541. Up to 562 conditions per place. [2021-11-09 09:44:34,993 INFO L132 encePairwiseOnDemand]: 279/298 looper letters, 63 selfloop transitions, 16 changer transitions 30/321 dead transitions. [2021-11-09 09:44:34,993 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 321 transitions, 1112 flow [2021-11-09 09:44:34,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 09:44:34,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-09 09:44:35,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3179 transitions. [2021-11-09 09:44:35,008 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619846596356663 [2021-11-09 09:44:35,008 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3179 transitions. [2021-11-09 09:44:35,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3179 transitions. [2021-11-09 09:44:35,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:44:35,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3179 transitions. [2021-11-09 09:44:35,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 227.07142857142858) internal successors, (3179), 14 states have internal predecessors, (3179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:35,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 298.0) internal successors, (4470), 15 states have internal predecessors, (4470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:35,040 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 298.0) internal successors, (4470), 15 states have internal predecessors, (4470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:35,041 INFO L186 Difference]: Start difference. First operand has 295 places, 283 transitions, 796 flow. Second operand 14 states and 3179 transitions. [2021-11-09 09:44:35,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 321 transitions, 1112 flow [2021-11-09 09:44:35,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 321 transitions, 1108 flow, removed 2 selfloop flow, removed 0 redundant places. [2021-11-09 09:44:35,058 INFO L242 Difference]: Finished difference. Result has 314 places, 286 transitions, 876 flow [2021-11-09 09:44:35,060 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=876, PETRI_PLACES=314, PETRI_TRANSITIONS=286} [2021-11-09 09:44:35,060 INFO L334 CegarLoopForPetriNet]: 270 programPoint places, 44 predicate places. [2021-11-09 09:44:35,060 INFO L470 AbstractCegarLoop]: Abstraction has has 314 places, 286 transitions, 876 flow [2021-11-09 09:44:35,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 225.30769230769232) internal successors, (2929), 13 states have internal predecessors, (2929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:35,062 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:44:35,062 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:44:35,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:44:35,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:44:35,287 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:44:35,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:44:35,288 INFO L85 PathProgramCache]: Analyzing trace with hash -699505021, now seen corresponding path program 2 times [2021-11-09 09:44:35,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:44:35,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640401182] [2021-11-09 09:44:35,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:44:35,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:44:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:44:49,802 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:44:49,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:44:49,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640401182] [2021-11-09 09:44:49,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640401182] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:44:49,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057106308] [2021-11-09 09:44:49,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:44:49,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:44:49,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:44:49,813 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:44:49,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 09:44:50,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:44:50,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:44:50,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 154 conjunts are in the unsatisfiable core [2021-11-09 09:44:50,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:45:14,762 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:45:14,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057106308] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:45:14,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:45:14,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 60] total 125 [2021-11-09 09:45:14,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208970927] [2021-11-09 09:45:14,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2021-11-09 09:45:14,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:45:14,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2021-11-09 09:45:14,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=908, Invalid=14592, Unknown=0, NotChecked=0, Total=15500 [2021-11-09 09:45:14,804 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 298 [2021-11-09 09:45:14,823 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 286 transitions, 876 flow. Second operand has 125 states, 125 states have (on average 108.648) internal successors, (13581), 125 states have internal predecessors, (13581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:45:14,824 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:45:14,824 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 298 [2021-11-09 09:45:14,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:46:27,579 INFO L129 PetriNetUnfolder]: 8938/19803 cut-off events. [2021-11-09 09:46:27,579 INFO L130 PetriNetUnfolder]: For 32771/33081 co-relation queries the response was YES. [2021-11-09 09:46:27,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57518 conditions, 19803 events. 8938/19803 cut-off events. For 32771/33081 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 175436 event pairs, 1494 based on Foata normal form. 644/19201 useless extension candidates. Maximal degree in co-relation 57486. Up to 6085 conditions per place. [2021-11-09 09:46:28,004 INFO L132 encePairwiseOnDemand]: 213/298 looper letters, 503 selfloop transitions, 346 changer transitions 101/1041 dead transitions. [2021-11-09 09:46:28,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 1041 transitions, 6021 flow [2021-11-09 09:46:28,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2021-11-09 09:46:28,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2021-11-09 09:46:28,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 19635 transitions. [2021-11-09 09:46:28,077 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.37225571607325675 [2021-11-09 09:46:28,078 INFO L72 ComplementDD]: Start complementDD. Operand 177 states and 19635 transitions. [2021-11-09 09:46:28,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 177 states and 19635 transitions. [2021-11-09 09:46:28,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:46:28,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 177 states and 19635 transitions. [2021-11-09 09:46:28,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 178 states, 177 states have (on average 110.9322033898305) internal successors, (19635), 177 states have internal predecessors, (19635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:46:28,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 178 states, 178 states have (on average 298.0) internal successors, (53044), 178 states have internal predecessors, (53044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:46:28,267 INFO L81 ComplementDD]: Finished complementDD. Result has 178 states, 178 states have (on average 298.0) internal successors, (53044), 178 states have internal predecessors, (53044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:46:28,268 INFO L186 Difference]: Start difference. First operand has 314 places, 286 transitions, 876 flow. Second operand 177 states and 19635 transitions. [2021-11-09 09:46:28,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 1041 transitions, 6021 flow [2021-11-09 09:46:28,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 1041 transitions, 5774 flow, removed 85 selfloop flow, removed 10 redundant places. [2021-11-09 09:46:28,402 INFO L242 Difference]: Finished difference. Result has 581 places, 643 transitions, 4100 flow [2021-11-09 09:46:28,403 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=177, PETRI_FLOW=4100, PETRI_PLACES=581, PETRI_TRANSITIONS=643} [2021-11-09 09:46:28,404 INFO L334 CegarLoopForPetriNet]: 270 programPoint places, 311 predicate places. [2021-11-09 09:46:28,404 INFO L470 AbstractCegarLoop]: Abstraction has has 581 places, 643 transitions, 4100 flow [2021-11-09 09:46:28,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 108.648) internal successors, (13581), 125 states have internal predecessors, (13581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:46:28,409 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:46:28,409 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:46:28,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:46:28,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-09 09:46:28,624 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:46:28,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:46:28,624 INFO L85 PathProgramCache]: Analyzing trace with hash -245398691, now seen corresponding path program 3 times [2021-11-09 09:46:28,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:46:28,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257608490] [2021-11-09 09:46:28,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:46:28,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:46:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:46:47,739 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:46:47,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:46:47,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257608490] [2021-11-09 09:46:47,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257608490] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:46:47,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226616367] [2021-11-09 09:46:47,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:46:47,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:46:47,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:46:47,742 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:46:47,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 09:46:49,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-09 09:46:49,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:46:49,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 102 conjunts are in the unsatisfiable core [2021-11-09 09:46:49,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:47:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-09 09:47:01,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226616367] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:47:01,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:47:01,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 28] total 94 [2021-11-09 09:47:01,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447942008] [2021-11-09 09:47:01,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-09 09:47:01,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:47:01,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-09 09:47:01,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=8216, Unknown=0, NotChecked=0, Total=8742 [2021-11-09 09:47:01,166 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 298 [2021-11-09 09:47:01,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 643 transitions, 4100 flow. Second operand has 94 states, 94 states have (on average 109.36170212765957) internal successors, (10280), 94 states have internal predecessors, (10280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:01,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:47:01,178 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 298 [2021-11-09 09:47:01,178 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:48:02,993 INFO L129 PetriNetUnfolder]: 8974/21007 cut-off events. [2021-11-09 09:48:02,993 INFO L130 PetriNetUnfolder]: For 88032/89472 co-relation queries the response was YES. [2021-11-09 09:48:03,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75200 conditions, 21007 events. 8974/21007 cut-off events. For 88032/89472 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 194505 event pairs, 1661 based on Foata normal form. 338/19910 useless extension candidates. Maximal degree in co-relation 75067. Up to 11623 conditions per place. [2021-11-09 09:48:04,092 INFO L132 encePairwiseOnDemand]: 213/298 looper letters, 699 selfloop transitions, 317 changer transitions 49/1156 dead transitions. [2021-11-09 09:48:04,093 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 763 places, 1156 transitions, 8731 flow [2021-11-09 09:48:04,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2021-11-09 09:48:04,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2021-11-09 09:48:04,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 22398 transitions. [2021-11-09 09:48:04,149 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.36843663639952623 [2021-11-09 09:48:04,150 INFO L72 ComplementDD]: Start complementDD. Operand 204 states and 22398 transitions. [2021-11-09 09:48:04,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 204 states and 22398 transitions. [2021-11-09 09:48:04,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:48:04,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 204 states and 22398 transitions. [2021-11-09 09:48:04,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 205 states, 204 states have (on average 109.79411764705883) internal successors, (22398), 204 states have internal predecessors, (22398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:04,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 205 states, 205 states have (on average 298.0) internal successors, (61090), 205 states have internal predecessors, (61090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:04,335 INFO L81 ComplementDD]: Finished complementDD. Result has 205 states, 205 states have (on average 298.0) internal successors, (61090), 205 states have internal predecessors, (61090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:04,336 INFO L186 Difference]: Start difference. First operand has 581 places, 643 transitions, 4100 flow. Second operand 204 states and 22398 transitions. [2021-11-09 09:48:04,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 763 places, 1156 transitions, 8731 flow [2021-11-09 09:48:06,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 731 places, 1156 transitions, 7992 flow, removed 350 selfloop flow, removed 32 redundant places. [2021-11-09 09:48:06,028 INFO L242 Difference]: Finished difference. Result has 755 places, 813 transitions, 5597 flow [2021-11-09 09:48:06,029 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=3506, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=204, PETRI_FLOW=5597, PETRI_PLACES=755, PETRI_TRANSITIONS=813} [2021-11-09 09:48:06,035 INFO L334 CegarLoopForPetriNet]: 270 programPoint places, 485 predicate places. [2021-11-09 09:48:06,036 INFO L470 AbstractCegarLoop]: Abstraction has has 755 places, 813 transitions, 5597 flow [2021-11-09 09:48:06,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 109.36170212765957) internal successors, (10280), 94 states have internal predecessors, (10280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:06,038 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:48:06,039 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:06,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:06,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-09 09:48:06,251 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:48:06,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:06,252 INFO L85 PathProgramCache]: Analyzing trace with hash 945158419, now seen corresponding path program 4 times [2021-11-09 09:48:06,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:06,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896483027] [2021-11-09 09:48:06,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:06,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:48:21,536 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:21,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:48:21,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896483027] [2021-11-09 09:48:21,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896483027] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:48:21,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377592703] [2021-11-09 09:48:21,537 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 09:48:21,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:21,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:21,538 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:48:21,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 09:48:23,694 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 09:48:23,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:48:23,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 166 conjunts are in the unsatisfiable core [2021-11-09 09:48:23,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:37,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:48:40,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-09 09:48:41,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-09 09:48:41,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-09 09:48:42,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-09 09:48:48,650 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:48:48,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377592703] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:48:48,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:48:48,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 64] total 130 [2021-11-09 09:48:48,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125913225] [2021-11-09 09:48:48,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2021-11-09 09:48:48,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:48:48,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2021-11-09 09:48:48,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1114, Invalid=15656, Unknown=0, NotChecked=0, Total=16770 [2021-11-09 09:48:48,677 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 298 [2021-11-09 09:48:48,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 755 places, 813 transitions, 5597 flow. Second operand has 130 states, 130 states have (on average 93.66153846153846) internal successors, (12176), 130 states have internal predecessors, (12176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:48,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:48:48,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 298 [2021-11-09 09:48:48,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:50:08,842 INFO L129 PetriNetUnfolder]: 21576/48851 cut-off events. [2021-11-09 09:50:08,843 INFO L130 PetriNetUnfolder]: For 270764/274924 co-relation queries the response was YES. [2021-11-09 09:50:10,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 185970 conditions, 48851 events. 21576/48851 cut-off events. For 270764/274924 co-relation queries the response was YES. Maximal size of possible extension queue 1304. Compared 515510 event pairs, 2035 based on Foata normal form. 1085/46793 useless extension candidates. Maximal degree in co-relation 185832. Up to 16716 conditions per place. [2021-11-09 09:50:11,201 INFO L132 encePairwiseOnDemand]: 209/298 looper letters, 767 selfloop transitions, 723 changer transitions 133/1707 dead transitions. [2021-11-09 09:50:11,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 962 places, 1707 transitions, 15579 flow [2021-11-09 09:50:11,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2021-11-09 09:50:11,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2021-11-09 09:50:11,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 20068 transitions. [2021-11-09 09:50:11,251 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.32067753275806965 [2021-11-09 09:50:11,252 INFO L72 ComplementDD]: Start complementDD. Operand 210 states and 20068 transitions. [2021-11-09 09:50:11,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 210 states and 20068 transitions. [2021-11-09 09:50:11,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:50:11,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 210 states and 20068 transitions. [2021-11-09 09:50:11,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 211 states, 210 states have (on average 95.56190476190476) internal successors, (20068), 210 states have internal predecessors, (20068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:11,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 211 states, 211 states have (on average 298.0) internal successors, (62878), 211 states have internal predecessors, (62878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:11,558 INFO L81 ComplementDD]: Finished complementDD. Result has 211 states, 211 states have (on average 298.0) internal successors, (62878), 211 states have internal predecessors, (62878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:11,558 INFO L186 Difference]: Start difference. First operand has 755 places, 813 transitions, 5597 flow. Second operand 210 states and 20068 transitions. [2021-11-09 09:50:11,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 962 places, 1707 transitions, 15579 flow [2021-11-09 09:50:16,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 837 places, 1707 transitions, 14789 flow, removed 256 selfloop flow, removed 125 redundant places. [2021-11-09 09:50:16,498 INFO L242 Difference]: Finished difference. Result has 893 places, 1272 transitions, 12217 flow [2021-11-09 09:50:16,499 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=4855, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=813, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=334, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=210, PETRI_FLOW=12217, PETRI_PLACES=893, PETRI_TRANSITIONS=1272} [2021-11-09 09:50:16,499 INFO L334 CegarLoopForPetriNet]: 270 programPoint places, 623 predicate places. [2021-11-09 09:50:16,499 INFO L470 AbstractCegarLoop]: Abstraction has has 893 places, 1272 transitions, 12217 flow [2021-11-09 09:50:16,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 93.66153846153846) internal successors, (12176), 130 states have internal predecessors, (12176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:16,501 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:50:16,501 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:50:16,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:50:16,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-09 09:50:16,702 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-09 09:50:16,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:16,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1361127901, now seen corresponding path program 5 times [2021-11-09 09:50:16,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:16,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941487226] [2021-11-09 09:50:16,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:16,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:30,297 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:30,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:30,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941487226] [2021-11-09 09:50:30,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941487226] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:50:30,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25748086] [2021-11-09 09:50:30,298 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 09:50:30,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:50:30,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:50:30,298 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:50:30,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b4a710-c402-457b-9628-fbc451b89fa4/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-09 09:50:32,963 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-11-09 09:50:32,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:50:32,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 189 conjunts are in the unsatisfiable core [2021-11-09 09:50:32,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:50:33,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:50:33,140 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 09:50:33,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-09 09:50:33,315 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-09 09:50:33,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 22 [2021-11-09 09:50:33,508 INFO L354 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2021-11-09 09:50:33,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 30 [2021-11-09 09:50:35,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:50:35,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:50:35,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:50:35,084 INFO L354 Elim1Store]: treesize reduction 66, result has 13.2 percent of original size [2021-11-09 09:50:35,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 32 treesize of output 45 [2021-11-09 09:50:37,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:50:41,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:50:41,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:50:41,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:50:41,254 INFO L354 Elim1Store]: treesize reduction 138, result has 25.0 percent of original size [2021-11-09 09:50:41,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 37 treesize of output 69 [2021-11-09 09:50:42,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:50:44,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:50:50,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:50:50,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:50:50,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:50:50,169 INFO L354 Elim1Store]: treesize reduction 156, result has 26.1 percent of original size [2021-11-09 09:50:50,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 42 treesize of output 81 [2021-11-09 09:50:52,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2021-11-09 09:51:00,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:00,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:00,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:00,254 INFO L354 Elim1Store]: treesize reduction 124, result has 19.0 percent of original size [2021-11-09 09:51:00,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 19 case distinctions, treesize of input 65 treesize of output 77 [2021-11-09 09:51:01,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2021-11-09 09:51:04,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-09 09:51:05,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-09 09:51:06,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-09 09:51:06,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-09 09:51:15,726 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:15,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25748086] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:51:15,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:51:15,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 64] total 131 [2021-11-09 09:51:15,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881290479] [2021-11-09 09:51:15,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2021-11-09 09:51:15,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:51:15,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2021-11-09 09:51:15,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=748, Invalid=16282, Unknown=0, NotChecked=0, Total=17030 [2021-11-09 09:51:15,750 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 298 [2021-11-09 09:51:15,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 893 places, 1272 transitions, 12217 flow. Second operand has 131 states, 131 states have (on average 92.64885496183206) internal successors, (12137), 131 states have internal predecessors, (12137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:15,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:51:15,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 298 [2021-11-09 09:51:15,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand