./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d721a74d879c75d156b7dfbd9383140c70ef6831602ea84a0f8988cd7fdc0c32 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:12:16,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:12:16,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:12:16,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:12:16,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:12:16,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:12:16,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:12:16,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:12:16,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:12:16,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:12:16,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:12:16,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:12:16,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:12:16,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:12:16,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:12:16,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:12:16,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:12:16,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:12:16,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:12:16,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:12:16,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:12:16,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:12:16,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:12:16,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:12:16,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:12:16,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:12:16,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:12:16,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:12:16,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:12:16,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:12:16,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:12:16,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:12:16,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:12:16,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:12:16,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:12:16,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:12:16,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:12:16,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:12:16,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:12:16,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:12:16,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:12:16,363 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:12:16,405 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:12:16,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:12:16,406 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:12:16,407 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:12:16,408 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:12:16,408 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:12:16,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:12:16,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:12:16,409 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:12:16,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:12:16,410 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:12:16,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:12:16,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:12:16,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:12:16,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:12:16,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:12:16,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:12:16,412 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:12:16,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:12:16,412 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:12:16,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:12:16,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:12:16,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:12:16,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:12:16,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:12:16,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:12:16,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:12:16,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:12:16,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:12:16,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:12:16,415 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:12:16,415 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:12:16,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:12:16,416 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_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d721a74d879c75d156b7dfbd9383140c70ef6831602ea84a0f8988cd7fdc0c32 [2022-11-02 21:12:16,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:12:16,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:12:16,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:12:16,785 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:12:16,786 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:12:16,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2022-11-02 21:12:16,870 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/data/d9a3f0932/6ceb2481d011478491b34282d2ca56ba/FLAGab9df9c3e [2022-11-02 21:12:17,328 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:12:17,329 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2022-11-02 21:12:17,341 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/data/d9a3f0932/6ceb2481d011478491b34282d2ca56ba/FLAGab9df9c3e [2022-11-02 21:12:17,680 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/data/d9a3f0932/6ceb2481d011478491b34282d2ca56ba [2022-11-02 21:12:17,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:12:17,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:12:17,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:12:17,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:12:17,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:12:17,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:12:17" (1/1) ... [2022-11-02 21:12:17,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1698cfdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:17, skipping insertion in model container [2022-11-02 21:12:17,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:12:17" (1/1) ... [2022-11-02 21:12:17,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:12:17,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:12:17,925 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2022-11-02 21:12:17,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:12:17,951 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:12:17,996 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2022-11-02 21:12:18,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:12:18,024 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:12:18,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:18 WrapperNode [2022-11-02 21:12:18,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:12:18,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:12:18,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:12:18,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:12:18,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:18" (1/1) ... [2022-11-02 21:12:18,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:18" (1/1) ... [2022-11-02 21:12:18,069 INFO L138 Inliner]: procedures = 27, calls = 73, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 245 [2022-11-02 21:12:18,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:12:18,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:12:18,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:12:18,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:12:18,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:18" (1/1) ... [2022-11-02 21:12:18,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:18" (1/1) ... [2022-11-02 21:12:18,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:18" (1/1) ... [2022-11-02 21:12:18,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:18" (1/1) ... [2022-11-02 21:12:18,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:18" (1/1) ... [2022-11-02 21:12:18,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:18" (1/1) ... [2022-11-02 21:12:18,099 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:18" (1/1) ... [2022-11-02 21:12:18,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:18" (1/1) ... [2022-11-02 21:12:18,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:12:18,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:12:18,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:12:18,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:12:18,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:18" (1/1) ... [2022-11-02 21:12:18,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:12:18,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:18,153 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:12:18,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:12:18,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:12:18,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:12:18,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:12:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:12:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 21:12:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 21:12:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 21:12:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 21:12:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 21:12:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 21:12:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-02 21:12:18,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-02 21:12:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:12:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 21:12:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 21:12:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 21:12:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:12:18,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:12:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:12:18,202 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 21:12:18,332 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:12:18,354 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:12:18,977 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:12:19,266 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:12:19,267 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 21:12:19,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:12:19 BoogieIcfgContainer [2022-11-02 21:12:19,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:12:19,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:12:19,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:12:19,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:12:19,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:12:17" (1/3) ... [2022-11-02 21:12:19,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26288b6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:12:19, skipping insertion in model container [2022-11-02 21:12:19,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:18" (2/3) ... [2022-11-02 21:12:19,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26288b6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:12:19, skipping insertion in model container [2022-11-02 21:12:19,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:12:19" (3/3) ... [2022-11-02 21:12:19,284 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2022-11-02 21:12:19,295 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:12:19,306 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:12:19,307 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:12:19,307 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:12:19,430 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2022-11-02 21:12:19,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 205 transitions, 454 flow [2022-11-02 21:12:19,649 INFO L130 PetriNetUnfolder]: 14/190 cut-off events. [2022-11-02 21:12:19,650 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 21:12:19,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 190 events. 14/190 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 161 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2022-11-02 21:12:19,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 205 transitions, 454 flow [2022-11-02 21:12:19,670 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 181 transitions, 392 flow [2022-11-02 21:12:19,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:12:19,697 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5c2e29e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:12:19,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-02 21:12:19,774 INFO L130 PetriNetUnfolder]: 14/180 cut-off events. [2022-11-02 21:12:19,774 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 21:12:19,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:19,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:19,777 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 21:12:19,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:19,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1855118144, now seen corresponding path program 1 times [2022-11-02 21:12:19,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:19,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646115825] [2022-11-02 21:12:19,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:19,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:20,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:20,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:20,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646115825] [2022-11-02 21:12:20,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646115825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:20,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:20,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:12:20,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259816443] [2022-11-02 21:12:20,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:20,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:12:20,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:20,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:12:20,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:12:20,285 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 207 [2022-11-02 21:12:20,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 181 transitions, 392 flow. Second operand has 2 states, 2 states have (on average 181.0) internal successors, (362), 2 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:20,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:20,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 207 [2022-11-02 21:12:20,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:12:20,505 INFO L130 PetriNetUnfolder]: 191/594 cut-off events. [2022-11-02 21:12:20,506 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-11-02 21:12:20,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 594 events. 191/594 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2244 event pairs, 111 based on Foata normal form. 64/606 useless extension candidates. Maximal degree in co-relation 865. Up to 286 conditions per place. [2022-11-02 21:12:20,517 INFO L137 encePairwiseOnDemand]: 199/207 looper letters, 21 selfloop transitions, 0 changer transitions 4/173 dead transitions. [2022-11-02 21:12:20,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 173 transitions, 418 flow [2022-11-02 21:12:20,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:12:20,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 21:12:20,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 375 transitions. [2022-11-02 21:12:20,539 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9057971014492754 [2022-11-02 21:12:20,539 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 375 transitions. [2022-11-02 21:12:20,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 375 transitions. [2022-11-02 21:12:20,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:12:20,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 375 transitions. [2022-11-02 21:12:20,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 187.5) internal successors, (375), 2 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:20,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:20,562 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:20,565 INFO L175 Difference]: Start difference. First operand has 180 places, 181 transitions, 392 flow. Second operand 2 states and 375 transitions. [2022-11-02 21:12:20,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 173 transitions, 418 flow [2022-11-02 21:12:20,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 173 transitions, 398 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-02 21:12:20,581 INFO L231 Difference]: Finished difference. Result has 173 places, 169 transitions, 348 flow [2022-11-02 21:12:20,584 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=348, PETRI_PLACES=173, PETRI_TRANSITIONS=169} [2022-11-02 21:12:20,588 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, -7 predicate places. [2022-11-02 21:12:20,588 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 169 transitions, 348 flow [2022-11-02 21:12:20,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 181.0) internal successors, (362), 2 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:20,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:20,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:20,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:12:20,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 21:12:20,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:20,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1459999842, now seen corresponding path program 1 times [2022-11-02 21:12:20,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:20,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286158132] [2022-11-02 21:12:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:20,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:21,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:21,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:21,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286158132] [2022-11-02 21:12:21,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286158132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:21,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:21,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:12:21,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157992084] [2022-11-02 21:12:21,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:21,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:12:21,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:21,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:12:21,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:12:21,164 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 207 [2022-11-02 21:12:21,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 169 transitions, 348 flow. Second operand has 6 states, 6 states have (on average 154.5) internal successors, (927), 6 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:21,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:21,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 207 [2022-11-02 21:12:21,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:12:21,709 INFO L130 PetriNetUnfolder]: 481/1385 cut-off events. [2022-11-02 21:12:21,709 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2022-11-02 21:12:21,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2212 conditions, 1385 events. 481/1385 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8445 event pairs, 149 based on Foata normal form. 1/1264 useless extension candidates. Maximal degree in co-relation 2209. Up to 353 conditions per place. [2022-11-02 21:12:21,723 INFO L137 encePairwiseOnDemand]: 196/207 looper letters, 69 selfloop transitions, 10 changer transitions 4/211 dead transitions. [2022-11-02 21:12:21,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 211 transitions, 614 flow [2022-11-02 21:12:21,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:12:21,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:12:21,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 978 transitions. [2022-11-02 21:12:21,729 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7874396135265701 [2022-11-02 21:12:21,729 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 978 transitions. [2022-11-02 21:12:21,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 978 transitions. [2022-11-02 21:12:21,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:12:21,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 978 transitions. [2022-11-02 21:12:21,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:21,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 207.0) internal successors, (1449), 7 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:21,740 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 207.0) internal successors, (1449), 7 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:21,740 INFO L175 Difference]: Start difference. First operand has 173 places, 169 transitions, 348 flow. Second operand 6 states and 978 transitions. [2022-11-02 21:12:21,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 211 transitions, 614 flow [2022-11-02 21:12:21,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 211 transitions, 614 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:12:21,749 INFO L231 Difference]: Finished difference. Result has 178 places, 175 transitions, 407 flow [2022-11-02 21:12:21,750 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=407, PETRI_PLACES=178, PETRI_TRANSITIONS=175} [2022-11-02 21:12:21,751 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, -2 predicate places. [2022-11-02 21:12:21,751 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 175 transitions, 407 flow [2022-11-02 21:12:21,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.5) internal successors, (927), 6 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:21,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:21,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:21,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:12:21,753 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 21:12:21,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:21,754 INFO L85 PathProgramCache]: Analyzing trace with hash 763170382, now seen corresponding path program 1 times [2022-11-02 21:12:21,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:21,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600744495] [2022-11-02 21:12:21,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:21,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:22,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:22,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600744495] [2022-11-02 21:12:22,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600744495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:22,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:22,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:12:22,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323624588] [2022-11-02 21:12:22,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:22,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:12:22,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:22,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:12:22,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:12:22,197 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 207 [2022-11-02 21:12:22,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 175 transitions, 407 flow. Second operand has 6 states, 6 states have (on average 154.5) internal successors, (927), 6 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:22,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:22,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 207 [2022-11-02 21:12:22,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:12:22,859 INFO L130 PetriNetUnfolder]: 703/1924 cut-off events. [2022-11-02 21:12:22,860 INFO L131 PetriNetUnfolder]: For 344/344 co-relation queries the response was YES. [2022-11-02 21:12:22,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3539 conditions, 1924 events. 703/1924 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12929 event pairs, 240 based on Foata normal form. 1/1743 useless extension candidates. Maximal degree in co-relation 3531. Up to 590 conditions per place. [2022-11-02 21:12:22,877 INFO L137 encePairwiseOnDemand]: 197/207 looper letters, 75 selfloop transitions, 10 changer transitions 4/217 dead transitions. [2022-11-02 21:12:22,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 217 transitions, 712 flow [2022-11-02 21:12:22,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:12:22,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:12:22,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 978 transitions. [2022-11-02 21:12:22,882 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7874396135265701 [2022-11-02 21:12:22,883 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 978 transitions. [2022-11-02 21:12:22,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 978 transitions. [2022-11-02 21:12:22,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:12:22,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 978 transitions. [2022-11-02 21:12:22,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:22,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 207.0) internal successors, (1449), 7 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:22,891 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 207.0) internal successors, (1449), 7 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:22,891 INFO L175 Difference]: Start difference. First operand has 178 places, 175 transitions, 407 flow. Second operand 6 states and 978 transitions. [2022-11-02 21:12:22,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 217 transitions, 712 flow [2022-11-02 21:12:22,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 217 transitions, 702 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-11-02 21:12:22,900 INFO L231 Difference]: Finished difference. Result has 183 places, 180 transitions, 473 flow [2022-11-02 21:12:22,901 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=473, PETRI_PLACES=183, PETRI_TRANSITIONS=180} [2022-11-02 21:12:22,904 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 3 predicate places. [2022-11-02 21:12:22,904 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 180 transitions, 473 flow [2022-11-02 21:12:22,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.5) internal successors, (927), 6 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:22,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:22,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:22,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:12:22,906 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 21:12:22,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:22,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1927642422, now seen corresponding path program 1 times [2022-11-02 21:12:22,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:22,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293890962] [2022-11-02 21:12:22,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:22,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:23,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:23,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:23,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293890962] [2022-11-02 21:12:23,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293890962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:23,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:23,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:12:23,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023044064] [2022-11-02 21:12:23,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:23,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:12:23,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:23,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:12:23,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:12:23,346 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 207 [2022-11-02 21:12:23,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 180 transitions, 473 flow. Second operand has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:23,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:23,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 207 [2022-11-02 21:12:23,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:12:24,193 INFO L130 PetriNetUnfolder]: 1018/2906 cut-off events. [2022-11-02 21:12:24,193 INFO L131 PetriNetUnfolder]: For 1384/1384 co-relation queries the response was YES. [2022-11-02 21:12:24,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5645 conditions, 2906 events. 1018/2906 cut-off events. For 1384/1384 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 22010 event pairs, 398 based on Foata normal form. 54/2671 useless extension candidates. Maximal degree in co-relation 5634. Up to 777 conditions per place. [2022-11-02 21:12:24,260 INFO L137 encePairwiseOnDemand]: 199/207 looper letters, 107 selfloop transitions, 8 changer transitions 0/246 dead transitions. [2022-11-02 21:12:24,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 246 transitions, 967 flow [2022-11-02 21:12:24,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:12:24,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 21:12:24,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1339 transitions. [2022-11-02 21:12:24,264 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8085748792270532 [2022-11-02 21:12:24,264 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1339 transitions. [2022-11-02 21:12:24,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1339 transitions. [2022-11-02 21:12:24,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:12:24,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1339 transitions. [2022-11-02 21:12:24,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 167.375) internal successors, (1339), 8 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:24,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 207.0) internal successors, (1863), 9 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:24,274 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 207.0) internal successors, (1863), 9 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:24,274 INFO L175 Difference]: Start difference. First operand has 183 places, 180 transitions, 473 flow. Second operand 8 states and 1339 transitions. [2022-11-02 21:12:24,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 246 transitions, 967 flow [2022-11-02 21:12:24,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 246 transitions, 961 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-02 21:12:24,283 INFO L231 Difference]: Finished difference. Result has 190 places, 185 transitions, 529 flow [2022-11-02 21:12:24,284 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=529, PETRI_PLACES=190, PETRI_TRANSITIONS=185} [2022-11-02 21:12:24,285 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 10 predicate places. [2022-11-02 21:12:24,285 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 185 transitions, 529 flow [2022-11-02 21:12:24,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:24,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:24,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:24,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:12:24,286 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 21:12:24,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:24,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1717617452, now seen corresponding path program 1 times [2022-11-02 21:12:24,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:24,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846743978] [2022-11-02 21:12:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:24,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:24,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:24,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846743978] [2022-11-02 21:12:24,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846743978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:24,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:24,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:12:24,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958378156] [2022-11-02 21:12:24,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:24,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:12:24,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:24,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:12:24,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:12:24,661 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 207 [2022-11-02 21:12:24,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 185 transitions, 529 flow. Second operand has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:24,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:24,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 207 [2022-11-02 21:12:24,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:12:25,467 INFO L130 PetriNetUnfolder]: 723/2409 cut-off events. [2022-11-02 21:12:25,468 INFO L131 PetriNetUnfolder]: For 1558/1558 co-relation queries the response was YES. [2022-11-02 21:12:25,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4809 conditions, 2409 events. 723/2409 cut-off events. For 1558/1558 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 17765 event pairs, 206 based on Foata normal form. 93/2306 useless extension candidates. Maximal degree in co-relation 4795. Up to 609 conditions per place. [2022-11-02 21:12:25,491 INFO L137 encePairwiseOnDemand]: 197/207 looper letters, 67 selfloop transitions, 6 changer transitions 20/224 dead transitions. [2022-11-02 21:12:25,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 224 transitions, 894 flow [2022-11-02 21:12:25,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:12:25,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 21:12:25,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1323 transitions. [2022-11-02 21:12:25,495 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7989130434782609 [2022-11-02 21:12:25,496 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1323 transitions. [2022-11-02 21:12:25,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1323 transitions. [2022-11-02 21:12:25,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:12:25,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1323 transitions. [2022-11-02 21:12:25,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:25,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 207.0) internal successors, (1863), 9 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:25,504 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 207.0) internal successors, (1863), 9 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:25,505 INFO L175 Difference]: Start difference. First operand has 190 places, 185 transitions, 529 flow. Second operand 8 states and 1323 transitions. [2022-11-02 21:12:25,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 224 transitions, 894 flow [2022-11-02 21:12:25,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 224 transitions, 891 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 21:12:25,515 INFO L231 Difference]: Finished difference. Result has 199 places, 183 transitions, 531 flow [2022-11-02 21:12:25,515 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=531, PETRI_PLACES=199, PETRI_TRANSITIONS=183} [2022-11-02 21:12:25,518 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 19 predicate places. [2022-11-02 21:12:25,518 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 183 transitions, 531 flow [2022-11-02 21:12:25,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:25,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:25,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:25,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:12:25,520 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 21:12:25,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:25,521 INFO L85 PathProgramCache]: Analyzing trace with hash -424293765, now seen corresponding path program 1 times [2022-11-02 21:12:25,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:25,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78134438] [2022-11-02 21:12:25,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:25,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:25,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:25,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:25,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78134438] [2022-11-02 21:12:25,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78134438] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:25,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603418522] [2022-11-02 21:12:25,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:25,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:25,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:25,985 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:26,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:12:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:26,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:12:26,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:26,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:26,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:26,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603418522] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:26,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:26,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-02 21:12:26,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587311928] [2022-11-02 21:12:26,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:26,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:12:26,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:26,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:12:26,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:12:26,706 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 207 [2022-11-02 21:12:26,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 183 transitions, 531 flow. Second operand has 18 states, 18 states have (on average 158.05555555555554) internal successors, (2845), 18 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:26,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:26,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 207 [2022-11-02 21:12:26,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:12:27,782 INFO L130 PetriNetUnfolder]: 931/2874 cut-off events. [2022-11-02 21:12:27,783 INFO L131 PetriNetUnfolder]: For 2862/2862 co-relation queries the response was YES. [2022-11-02 21:12:27,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6656 conditions, 2874 events. 931/2874 cut-off events. For 2862/2862 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 22427 event pairs, 320 based on Foata normal form. 54/2659 useless extension candidates. Maximal degree in co-relation 6638. Up to 733 conditions per place. [2022-11-02 21:12:27,820 INFO L137 encePairwiseOnDemand]: 193/207 looper letters, 113 selfloop transitions, 16 changer transitions 0/259 dead transitions. [2022-11-02 21:12:27,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 259 transitions, 1152 flow [2022-11-02 21:12:27,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:12:27,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-02 21:12:27,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2267 transitions. [2022-11-02 21:12:27,826 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.782263630089717 [2022-11-02 21:12:27,826 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2267 transitions. [2022-11-02 21:12:27,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2267 transitions. [2022-11-02 21:12:27,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:12:27,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2267 transitions. [2022-11-02 21:12:27,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 161.92857142857142) internal successors, (2267), 14 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:27,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 207.0) internal successors, (3105), 15 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:27,840 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 207.0) internal successors, (3105), 15 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:27,840 INFO L175 Difference]: Start difference. First operand has 199 places, 183 transitions, 531 flow. Second operand 14 states and 2267 transitions. [2022-11-02 21:12:27,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 259 transitions, 1152 flow [2022-11-02 21:12:27,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 259 transitions, 1099 flow, removed 19 selfloop flow, removed 9 redundant places. [2022-11-02 21:12:27,854 INFO L231 Difference]: Finished difference. Result has 205 places, 191 transitions, 603 flow [2022-11-02 21:12:27,855 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=603, PETRI_PLACES=205, PETRI_TRANSITIONS=191} [2022-11-02 21:12:27,855 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 25 predicate places. [2022-11-02 21:12:27,855 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 191 transitions, 603 flow [2022-11-02 21:12:27,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 158.05555555555554) internal successors, (2845), 18 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:27,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:27,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:27,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:28,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 21:12:28,080 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 21:12:28,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:28,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1393575078, now seen corresponding path program 1 times [2022-11-02 21:12:28,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:28,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493313845] [2022-11-02 21:12:28,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:28,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:28,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:28,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:28,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493313845] [2022-11-02 21:12:28,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493313845] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:28,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510024771] [2022-11-02 21:12:28,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:28,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:28,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:28,581 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:28,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:12:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:28,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:12:28,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:28,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:29,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:29,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510024771] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:29,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:29,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-02 21:12:29,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970200047] [2022-11-02 21:12:29,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:29,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:12:29,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:29,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:12:29,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:12:29,224 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 207 [2022-11-02 21:12:29,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 191 transitions, 603 flow. Second operand has 18 states, 18 states have (on average 158.16666666666666) internal successors, (2847), 18 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:29,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:29,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 207 [2022-11-02 21:12:29,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:12:30,038 INFO L130 PetriNetUnfolder]: 723/2424 cut-off events. [2022-11-02 21:12:30,038 INFO L131 PetriNetUnfolder]: For 2035/2035 co-relation queries the response was YES. [2022-11-02 21:12:30,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5368 conditions, 2424 events. 723/2424 cut-off events. For 2035/2035 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 17892 event pairs, 191 based on Foata normal form. 16/2235 useless extension candidates. Maximal degree in co-relation 5349. Up to 609 conditions per place. [2022-11-02 21:12:30,062 INFO L137 encePairwiseOnDemand]: 191/207 looper letters, 65 selfloop transitions, 14 changer transitions 22/231 dead transitions. [2022-11-02 21:12:30,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 231 transitions, 1004 flow [2022-11-02 21:12:30,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:12:30,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-02 21:12:30,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2249 transitions. [2022-11-02 21:12:30,067 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7760524499654935 [2022-11-02 21:12:30,068 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2249 transitions. [2022-11-02 21:12:30,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2249 transitions. [2022-11-02 21:12:30,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:12:30,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2249 transitions. [2022-11-02 21:12:30,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 160.64285714285714) internal successors, (2249), 14 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:30,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 207.0) internal successors, (3105), 15 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:30,082 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 207.0) internal successors, (3105), 15 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:30,082 INFO L175 Difference]: Start difference. First operand has 205 places, 191 transitions, 603 flow. Second operand 14 states and 2249 transitions. [2022-11-02 21:12:30,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 231 transitions, 1004 flow [2022-11-02 21:12:30,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 231 transitions, 987 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-02 21:12:30,090 INFO L231 Difference]: Finished difference. Result has 215 places, 187 transitions, 587 flow [2022-11-02 21:12:30,090 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=587, PETRI_PLACES=215, PETRI_TRANSITIONS=187} [2022-11-02 21:12:30,091 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 35 predicate places. [2022-11-02 21:12:30,091 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 187 transitions, 587 flow [2022-11-02 21:12:30,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 158.16666666666666) internal successors, (2847), 18 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:30,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:30,093 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-11-02 21:12:30,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:30,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:30,309 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 21:12:30,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:30,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1821770549, now seen corresponding path program 1 times [2022-11-02 21:12:30,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:30,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273607806] [2022-11-02 21:12:30,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:30,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:12:30,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:30,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273607806] [2022-11-02 21:12:30,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273607806] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:30,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823057647] [2022-11-02 21:12:30,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:30,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:30,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:30,740 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:30,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:12:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:30,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:12:30,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:12:31,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:31,385 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:12:31,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823057647] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:31,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:12:31,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 18 [2022-11-02 21:12:31,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163231082] [2022-11-02 21:12:31,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:31,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:12:31,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:31,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:12:31,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:12:31,390 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 207 [2022-11-02 21:12:31,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 187 transitions, 587 flow. Second operand has 9 states, 9 states have (on average 159.22222222222223) internal successors, (1433), 9 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:31,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:31,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 207 [2022-11-02 21:12:31,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:12:31,929 INFO L130 PetriNetUnfolder]: 493/1507 cut-off events. [2022-11-02 21:12:31,930 INFO L131 PetriNetUnfolder]: For 1838/1838 co-relation queries the response was YES. [2022-11-02 21:12:31,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3718 conditions, 1507 events. 493/1507 cut-off events. For 1838/1838 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9508 event pairs, 213 based on Foata normal form. 31/1408 useless extension candidates. Maximal degree in co-relation 3697. Up to 694 conditions per place. [2022-11-02 21:12:31,948 INFO L137 encePairwiseOnDemand]: 195/207 looper letters, 58 selfloop transitions, 11 changer transitions 0/199 dead transitions. [2022-11-02 21:12:31,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 199 transitions, 790 flow [2022-11-02 21:12:31,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:12:31,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 21:12:31,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1605 transitions. [2022-11-02 21:12:31,953 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7753623188405797 [2022-11-02 21:12:31,953 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1605 transitions. [2022-11-02 21:12:31,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1605 transitions. [2022-11-02 21:12:31,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:12:31,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1605 transitions. [2022-11-02 21:12:31,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 160.5) internal successors, (1605), 10 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:31,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 207.0) internal successors, (2277), 11 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:31,963 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 207.0) internal successors, (2277), 11 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:31,964 INFO L175 Difference]: Start difference. First operand has 215 places, 187 transitions, 587 flow. Second operand 10 states and 1605 transitions. [2022-11-02 21:12:31,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 199 transitions, 790 flow [2022-11-02 21:12:31,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 199 transitions, 740 flow, removed 13 selfloop flow, removed 14 redundant places. [2022-11-02 21:12:31,973 INFO L231 Difference]: Finished difference. Result has 208 places, 190 transitions, 595 flow [2022-11-02 21:12:31,973 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=595, PETRI_PLACES=208, PETRI_TRANSITIONS=190} [2022-11-02 21:12:31,976 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 28 predicate places. [2022-11-02 21:12:31,977 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 190 transitions, 595 flow [2022-11-02 21:12:31,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 159.22222222222223) internal successors, (1433), 9 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:31,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:31,979 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-11-02 21:12:32,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:32,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:32,192 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 21:12:32,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:32,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1254417342, now seen corresponding path program 1 times [2022-11-02 21:12:32,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:32,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973473777] [2022-11-02 21:12:32,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:32,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:12:32,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:32,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973473777] [2022-11-02 21:12:32,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973473777] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:32,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918703648] [2022-11-02 21:12:32,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:32,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:32,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:32,529 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:32,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:12:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:32,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:12:32,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:32,904 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:12:32,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:33,189 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:12:33,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918703648] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:33,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:12:33,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 19 [2022-11-02 21:12:33,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085090963] [2022-11-02 21:12:33,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:33,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:12:33,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:33,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:12:33,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:12:33,194 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 207 [2022-11-02 21:12:33,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 190 transitions, 595 flow. Second operand has 9 states, 9 states have (on average 159.22222222222223) internal successors, (1433), 9 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:33,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:33,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 207 [2022-11-02 21:12:33,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:12:33,673 INFO L130 PetriNetUnfolder]: 419/1259 cut-off events. [2022-11-02 21:12:33,673 INFO L131 PetriNetUnfolder]: For 1217/1217 co-relation queries the response was YES. [2022-11-02 21:12:33,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3092 conditions, 1259 events. 419/1259 cut-off events. For 1217/1217 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7413 event pairs, 165 based on Foata normal form. 38/1184 useless extension candidates. Maximal degree in co-relation 3073. Up to 542 conditions per place. [2022-11-02 21:12:33,688 INFO L137 encePairwiseOnDemand]: 197/207 looper letters, 74 selfloop transitions, 10 changer transitions 0/214 dead transitions. [2022-11-02 21:12:33,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 214 transitions, 888 flow [2022-11-02 21:12:33,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:12:33,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 21:12:33,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1611 transitions. [2022-11-02 21:12:33,692 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7782608695652173 [2022-11-02 21:12:33,692 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1611 transitions. [2022-11-02 21:12:33,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1611 transitions. [2022-11-02 21:12:33,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:12:33,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1611 transitions. [2022-11-02 21:12:33,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 161.1) internal successors, (1611), 10 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:33,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 207.0) internal successors, (2277), 11 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:33,702 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 207.0) internal successors, (2277), 11 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:33,702 INFO L175 Difference]: Start difference. First operand has 208 places, 190 transitions, 595 flow. Second operand 10 states and 1611 transitions. [2022-11-02 21:12:33,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 214 transitions, 888 flow [2022-11-02 21:12:33,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 214 transitions, 857 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-11-02 21:12:33,711 INFO L231 Difference]: Finished difference. Result has 211 places, 191 transitions, 600 flow [2022-11-02 21:12:33,711 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=600, PETRI_PLACES=211, PETRI_TRANSITIONS=191} [2022-11-02 21:12:33,712 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 31 predicate places. [2022-11-02 21:12:33,712 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 191 transitions, 600 flow [2022-11-02 21:12:33,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 159.22222222222223) internal successors, (1433), 9 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:33,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:33,714 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-11-02 21:12:33,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:33,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:33,928 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 21:12:33,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:33,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1044999798, now seen corresponding path program 1 times [2022-11-02 21:12:33,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:33,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628457923] [2022-11-02 21:12:33,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:33,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:35,775 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 21:12:35,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:35,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628457923] [2022-11-02 21:12:35,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628457923] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:35,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87314255] [2022-11-02 21:12:35,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:35,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:35,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:35,780 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:35,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:12:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:35,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-02 21:12:35,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:36,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-02 21:12:36,346 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 21:12:36,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:36,589 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:12:36,589 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 16 [2022-11-02 21:12:36,668 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 21:12:36,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87314255] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:36,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:36,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 10] total 23 [2022-11-02 21:12:36,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449450146] [2022-11-02 21:12:36,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:36,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-02 21:12:36,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:36,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-02 21:12:36,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2022-11-02 21:12:36,676 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 207 [2022-11-02 21:12:36,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 191 transitions, 600 flow. Second operand has 23 states, 23 states have (on average 122.47826086956522) internal successors, (2817), 23 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:36,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:36,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 207 [2022-11-02 21:12:36,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:12:41,001 INFO L130 PetriNetUnfolder]: 5301/10745 cut-off events. [2022-11-02 21:12:41,001 INFO L131 PetriNetUnfolder]: For 12082/12082 co-relation queries the response was YES. [2022-11-02 21:12:41,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28914 conditions, 10745 events. 5301/10745 cut-off events. For 12082/12082 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 89194 event pairs, 1137 based on Foata normal form. 2/10106 useless extension candidates. Maximal degree in co-relation 28894. Up to 3397 conditions per place. [2022-11-02 21:12:41,139 INFO L137 encePairwiseOnDemand]: 187/207 looper letters, 272 selfloop transitions, 77 changer transitions 8/461 dead transitions. [2022-11-02 21:12:41,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 461 transitions, 2481 flow [2022-11-02 21:12:41,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-02 21:12:41,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-02 21:12:41,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3620 transitions. [2022-11-02 21:12:41,150 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6245686680469289 [2022-11-02 21:12:41,150 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3620 transitions. [2022-11-02 21:12:41,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3620 transitions. [2022-11-02 21:12:41,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:12:41,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3620 transitions. [2022-11-02 21:12:41,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 129.28571428571428) internal successors, (3620), 28 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:41,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 207.0) internal successors, (6003), 29 states have internal predecessors, (6003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:41,179 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 207.0) internal successors, (6003), 29 states have internal predecessors, (6003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:41,179 INFO L175 Difference]: Start difference. First operand has 211 places, 191 transitions, 600 flow. Second operand 28 states and 3620 transitions. [2022-11-02 21:12:41,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 461 transitions, 2481 flow [2022-11-02 21:12:41,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 461 transitions, 2448 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-02 21:12:41,230 INFO L231 Difference]: Finished difference. Result has 246 places, 260 transitions, 1251 flow [2022-11-02 21:12:41,231 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1251, PETRI_PLACES=246, PETRI_TRANSITIONS=260} [2022-11-02 21:12:41,232 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 66 predicate places. [2022-11-02 21:12:41,232 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 260 transitions, 1251 flow [2022-11-02 21:12:41,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 122.47826086956522) internal successors, (2817), 23 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:41,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:41,234 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-11-02 21:12:41,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:41,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:41,448 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 21:12:41,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:41,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1593125500, now seen corresponding path program 1 times [2022-11-02 21:12:41,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:41,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790781707] [2022-11-02 21:12:41,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:41,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:43,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 21:12:43,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:43,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790781707] [2022-11-02 21:12:43,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790781707] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:43,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14017533] [2022-11-02 21:12:43,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:43,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:43,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:43,374 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:43,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 21:12:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:43,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-02 21:12:43,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:44,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:44,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 21:12:44,228 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-02 21:12:44,458 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:12:44,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:44,747 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_381 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_381) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) c_~s_2~0)) is different from false [2022-11-02 21:12:44,789 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_381 (Array Int Int))) (= (+ c_~t_4~0 c_~s_2~0) (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_381) c_~X_0~0.base) (+ c_~X_0~0.offset 4)))) is different from false [2022-11-02 21:12:44,801 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:12:44,801 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 34 [2022-11-02 21:12:44,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 21:12:45,178 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 1 not checked. [2022-11-02 21:12:45,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14017533] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:45,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:45,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 17] total 41 [2022-11-02 21:12:45,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539959492] [2022-11-02 21:12:45,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:45,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-02 21:12:45,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:45,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-02 21:12:45,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1362, Unknown=2, NotChecked=150, Total=1640 [2022-11-02 21:12:45,185 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 207 [2022-11-02 21:12:45,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 260 transitions, 1251 flow. Second operand has 41 states, 41 states have (on average 108.48780487804878) internal successors, (4448), 41 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:45,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:45,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 207 [2022-11-02 21:12:45,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:12:52,765 INFO L130 PetriNetUnfolder]: 7679/15412 cut-off events. [2022-11-02 21:12:52,766 INFO L131 PetriNetUnfolder]: For 43240/43324 co-relation queries the response was YES. [2022-11-02 21:12:52,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51162 conditions, 15412 events. 7679/15412 cut-off events. For 43240/43324 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 136912 event pairs, 587 based on Foata normal form. 80/14469 useless extension candidates. Maximal degree in co-relation 51126. Up to 3608 conditions per place. [2022-11-02 21:12:53,014 INFO L137 encePairwiseOnDemand]: 182/207 looper letters, 293 selfloop transitions, 139 changer transitions 5/522 dead transitions. [2022-11-02 21:12:53,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 522 transitions, 3752 flow [2022-11-02 21:12:53,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 21:12:53,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-02 21:12:53,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3904 transitions. [2022-11-02 21:12:53,026 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5547030406365445 [2022-11-02 21:12:53,026 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3904 transitions. [2022-11-02 21:12:53,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3904 transitions. [2022-11-02 21:12:53,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:12:53,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3904 transitions. [2022-11-02 21:12:53,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 114.82352941176471) internal successors, (3904), 34 states have internal predecessors, (3904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:53,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 207.0) internal successors, (7245), 35 states have internal predecessors, (7245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:53,061 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 207.0) internal successors, (7245), 35 states have internal predecessors, (7245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:53,061 INFO L175 Difference]: Start difference. First operand has 246 places, 260 transitions, 1251 flow. Second operand 34 states and 3904 transitions. [2022-11-02 21:12:53,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 522 transitions, 3752 flow [2022-11-02 21:12:53,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 522 transitions, 3671 flow, removed 32 selfloop flow, removed 11 redundant places. [2022-11-02 21:12:53,305 INFO L231 Difference]: Finished difference. Result has 278 places, 332 transitions, 2381 flow [2022-11-02 21:12:53,305 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2381, PETRI_PLACES=278, PETRI_TRANSITIONS=332} [2022-11-02 21:12:53,306 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 98 predicate places. [2022-11-02 21:12:53,306 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 332 transitions, 2381 flow [2022-11-02 21:12:53,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 108.48780487804878) internal successors, (4448), 41 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:53,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:53,308 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-11-02 21:12:53,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:53,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 21:12:53,524 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 21:12:53,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:53,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1852173653, now seen corresponding path program 1 times [2022-11-02 21:12:53,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:53,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646229667] [2022-11-02 21:12:53,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:53,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:55,235 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 21:12:55,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:55,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646229667] [2022-11-02 21:12:55,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646229667] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:55,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031011157] [2022-11-02 21:12:55,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:55,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:55,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:55,238 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:55,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 21:12:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:55,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-02 21:12:55,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:55,433 INFO L390 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 [2022-11-02 21:12:55,834 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 21:12:55,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-02 21:12:56,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 21:12:56,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:56,333 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 21:12:56,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-02 21:12:56,584 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:12:56,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:56,828 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0)))) (and (forall ((v_ArrVal_432 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_432) c_~X_0~0.base) .cse0) c_~s_2~0) (+ c_~s_6~0 1))) (forall ((v_ArrVal_432 (Array Int Int))) (<= c_~s_6~0 (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_432) c_~X_0~0.base) .cse0) c_~s_2~0))))) is different from false [2022-11-02 21:12:56,893 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0)))) (and (forall ((v_ArrVal_432 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (< (+ (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_431) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_432) c_~X_0~0.base) .cse0) c_~s_2~0) (+ c_~s_6~0 1))) (forall ((v_ArrVal_432 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (<= c_~s_6~0 (+ (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_431) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_432) c_~X_0~0.base) .cse0) c_~s_2~0))))) is different from false [2022-11-02 21:12:56,933 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((v_ArrVal_432 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_431) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_432) c_~X_0~0.base) .cse0) (+ c_~s_6~0 1))) (forall ((v_ArrVal_432 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (<= c_~s_6~0 (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_431) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_432) c_~X_0~0.base) .cse0))))) is different from false [2022-11-02 21:12:56,963 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_30| Int)) (or (forall ((v_ArrVal_432 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_431) |v_thread1Thread1of1ForFork3_~#t3~0.base_30| v_ArrVal_432) c_~X_0~0.base) .cse0) (+ c_~s_6~0 1))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_30|)))) (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_30| Int)) (or (forall ((v_ArrVal_432 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (<= c_~s_6~0 (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_431) |v_thread1Thread1of1ForFork3_~#t3~0.base_30| v_ArrVal_432) c_~X_0~0.base) .cse0))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_30|)))))) is different from false [2022-11-02 21:12:57,097 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_30| Int)) (or (forall ((v_ArrVal_432 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_431) |v_thread1Thread1of1ForFork3_~#t3~0.base_30| v_ArrVal_432) c_~X_0~0.base) .cse0) (+ c_~s_6~0 c_~t_8~0 1))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_30|)))) (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_30| Int)) (or (forall ((v_ArrVal_432 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (<= (+ c_~s_6~0 c_~t_8~0) (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_431) |v_thread1Thread1of1ForFork3_~#t3~0.base_30| v_ArrVal_432) c_~X_0~0.base) .cse0))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_30|)))))) is different from false [2022-11-02 21:12:57,122 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:12:57,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 72 [2022-11-02 21:12:57,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2022-11-02 21:12:57,134 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-11-02 21:12:57,184 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:12:57,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:12:57,192 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 21:12:57,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 11 [2022-11-02 21:12:57,873 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 1 not checked. [2022-11-02 21:12:57,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031011157] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:57,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:57,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 19] total 48 [2022-11-02 21:12:57,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435238801] [2022-11-02 21:12:57,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:57,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-02 21:12:57,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:57,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-02 21:12:57,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1671, Unknown=5, NotChecked=430, Total=2256 [2022-11-02 21:12:57,881 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 207 [2022-11-02 21:12:57,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 332 transitions, 2381 flow. Second operand has 48 states, 48 states have (on average 99.20833333333333) internal successors, (4762), 48 states have internal predecessors, (4762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:57,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:57,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 207 [2022-11-02 21:12:57,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:13:01,200 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (<= 1 c_~i_7~0) (<= (+ c_~X_0~0.base 1) |c_#StackHeapBarrier|) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.base| 1) |c_#StackHeapBarrier|) (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_30| Int)) (or (forall ((v_ArrVal_432 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_431) |v_thread1Thread1of1ForFork3_~#t3~0.base_30| v_ArrVal_432) c_~X_0~0.base) .cse0) (+ c_~s_6~0 c_~t_8~0 1))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_30|)))) (= |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 0) (= c_~s_6~0 0) (not (= c_~X_0~0.base |c_thread1Thread1of1ForFork3_~#t2~0.base|)) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 1) |c_#StackHeapBarrier|) (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_30| Int)) (or (forall ((v_ArrVal_432 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (<= (+ c_~s_6~0 c_~t_8~0) (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_431) |v_thread1Thread1of1ForFork3_~#t3~0.base_30| v_ArrVal_432) c_~X_0~0.base) .cse0))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_30|)))) (= 0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (< |c_ULTIMATE.start_create_fresh_int_array_#res#1.base| |c_#StackHeapBarrier|) (<= c_~i_7~0 1) (= (select |c_#valid| |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) 1) (= c_~X_0~0.offset 0) (= (select (select |c_#memory_int| c_~X_0~0.base) (+ c_~X_0~0.offset (* 4 c_~i_7~0))) c_~t_8~0))) is different from false [2022-11-02 21:13:03,253 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (<= 1 c_~i_7~0) (<= (+ c_~X_0~0.base 1) |c_#StackHeapBarrier|) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.base| 1) |c_#StackHeapBarrier|) (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_30| Int)) (or (forall ((v_ArrVal_432 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_431) |v_thread1Thread1of1ForFork3_~#t3~0.base_30| v_ArrVal_432) c_~X_0~0.base) .cse0) (+ c_~s_6~0 c_~t_8~0 1))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_30|)))) (= |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 0) (= c_~s_6~0 0) (not (= c_~X_0~0.base |c_thread1Thread1of1ForFork3_~#t2~0.base|)) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 1) |c_#StackHeapBarrier|) (<= c_~s_6~0 c_~s_2~0) (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_30| Int)) (or (forall ((v_ArrVal_432 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (<= (+ c_~s_6~0 c_~t_8~0) (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_431) |v_thread1Thread1of1ForFork3_~#t3~0.base_30| v_ArrVal_432) c_~X_0~0.base) .cse0))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_30|)))) (< c_~s_2~0 (+ c_~s_6~0 1)) (= 0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (< |c_ULTIMATE.start_create_fresh_int_array_#res#1.base| |c_#StackHeapBarrier|) (<= c_~i_7~0 1) (= (select |c_#valid| |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) 1) (= c_~X_0~0.offset 0) (= (select (select |c_#memory_int| c_~X_0~0.base) (+ c_~X_0~0.offset (* 4 c_~i_7~0))) c_~t_8~0))) is different from false [2022-11-02 21:13:05,260 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| c_~X_0~0.base) (+ c_~X_0~0.offset (* 4 c_~i_7~0)))) (.cse1 (+ c_~X_0~0.offset 4))) (and (<= 1 c_~i_7~0) (<= (+ c_~X_0~0.base 1) |c_#StackHeapBarrier|) (<= .cse0 c_~s_6~0) (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_30| Int)) (or (forall ((v_ArrVal_432 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_431) |v_thread1Thread1of1ForFork3_~#t3~0.base_30| v_ArrVal_432) c_~X_0~0.base) .cse1) (+ c_~s_6~0 1))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_30|)))) (<= c_~s_6~0 .cse0) (not (= c_~X_0~0.base |c_thread1Thread1of1ForFork3_~#t2~0.base|)) (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_30| Int)) (or (forall ((v_ArrVal_432 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (<= c_~s_6~0 (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_431) |v_thread1Thread1of1ForFork3_~#t3~0.base_30| v_ArrVal_432) c_~X_0~0.base) .cse1))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_30|)))) (<= c_~i_7~0 1) (= c_~X_0~0.offset 0))) is different from false [2022-11-02 21:13:07,512 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4)) (.cse1 (select (select |c_#memory_int| c_~X_0~0.base) 4))) (and (<= (+ c_~X_0~0.base 1) |c_#StackHeapBarrier|) (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_30| Int)) (or (forall ((v_ArrVal_432 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_431) |v_thread1Thread1of1ForFork3_~#t3~0.base_30| v_ArrVal_432) c_~X_0~0.base) .cse0) (+ c_~s_6~0 1))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_30|)))) (<= c_~s_6~0 .cse1) (not (= c_~X_0~0.base |c_thread1Thread1of1ForFork3_~#t2~0.base|)) (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_30| Int)) (or (forall ((v_ArrVal_432 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (<= c_~s_6~0 (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_431) |v_thread1Thread1of1ForFork3_~#t3~0.base_30| v_ArrVal_432) c_~X_0~0.base) .cse0))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_30|)))) (<= .cse1 c_~s_6~0) (= c_~X_0~0.offset 0))) is different from false [2022-11-02 21:13:20,275 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (<= 1 c_~i_7~0) (<= (+ c_~X_0~0.base 1) |c_#StackHeapBarrier|) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.base| 1) |c_#StackHeapBarrier|) (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_30| Int)) (or (forall ((v_ArrVal_432 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_431) |v_thread1Thread1of1ForFork3_~#t3~0.base_30| v_ArrVal_432) c_~X_0~0.base) .cse0) (+ c_~s_6~0 c_~t_8~0 1))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_30|)))) (= |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 0) (= c_~s_6~0 0) (not (= c_~X_0~0.base |c_thread1Thread1of1ForFork3_~#t2~0.base|)) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 1) |c_#StackHeapBarrier|) (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_30| Int)) (or (forall ((v_ArrVal_432 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (<= (+ c_~s_6~0 c_~t_8~0) (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_431) |v_thread1Thread1of1ForFork3_~#t3~0.base_30| v_ArrVal_432) c_~X_0~0.base) .cse0))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_30|)))) (= 0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (<= c_~i_7~0 1) (= c_~X_0~0.offset 0) (= (select (select |c_#memory_int| c_~X_0~0.base) (+ c_~X_0~0.offset (* 4 c_~i_7~0))) c_~t_8~0))) is different from false [2022-11-02 21:13:21,442 INFO L130 PetriNetUnfolder]: 19346/38931 cut-off events. [2022-11-02 21:13:21,442 INFO L131 PetriNetUnfolder]: For 198054/198284 co-relation queries the response was YES. [2022-11-02 21:13:21,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148834 conditions, 38931 events. 19346/38931 cut-off events. For 198054/198284 co-relation queries the response was YES. Maximal size of possible extension queue 2279. Compared 397279 event pairs, 3061 based on Foata normal form. 108/36613 useless extension candidates. Maximal degree in co-relation 148788. Up to 11011 conditions per place. [2022-11-02 21:13:22,201 INFO L137 encePairwiseOnDemand]: 167/207 looper letters, 683 selfloop transitions, 318 changer transitions 12/1093 dead transitions. [2022-11-02 21:13:22,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 1093 transitions, 11311 flow [2022-11-02 21:13:22,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-02 21:13:22,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-02 21:13:22,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3994 transitions. [2022-11-02 21:13:22,218 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5214779997388693 [2022-11-02 21:13:22,218 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3994 transitions. [2022-11-02 21:13:22,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3994 transitions. [2022-11-02 21:13:22,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:13:22,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3994 transitions. [2022-11-02 21:13:22,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 107.94594594594595) internal successors, (3994), 37 states have internal predecessors, (3994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:22,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 207.0) internal successors, (7866), 38 states have internal predecessors, (7866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:22,245 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 207.0) internal successors, (7866), 38 states have internal predecessors, (7866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:22,245 INFO L175 Difference]: Start difference. First operand has 278 places, 332 transitions, 2381 flow. Second operand 37 states and 3994 transitions. [2022-11-02 21:13:22,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 1093 transitions, 11311 flow [2022-11-02 21:13:24,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 1093 transitions, 10650 flow, removed 297 selfloop flow, removed 14 redundant places. [2022-11-02 21:13:24,876 INFO L231 Difference]: Finished difference. Result has 315 places, 660 transitions, 6718 flow [2022-11-02 21:13:24,876 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=2194, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6718, PETRI_PLACES=315, PETRI_TRANSITIONS=660} [2022-11-02 21:13:24,877 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 135 predicate places. [2022-11-02 21:13:24,877 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 660 transitions, 6718 flow [2022-11-02 21:13:24,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 99.20833333333333) internal successors, (4762), 48 states have internal predecessors, (4762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:24,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:13:24,880 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-11-02 21:13:24,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:13:25,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 21:13:25,096 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 21:13:25,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:25,097 INFO L85 PathProgramCache]: Analyzing trace with hash 797871590, now seen corresponding path program 2 times [2022-11-02 21:13:25,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:25,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876531426] [2022-11-02 21:13:25,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:25,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:26,585 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 21:13:26,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:26,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876531426] [2022-11-02 21:13:26,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876531426] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:13:26,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431675610] [2022-11-02 21:13:26,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:13:26,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:13:26,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:13:26,587 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:13:26,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 21:13:26,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:13:26,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:13:26,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-02 21:13:26,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:13:27,309 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 21:13:27,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 21:13:27,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 21:13:27,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 21:13:27,900 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 21:13:28,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-02 21:13:28,315 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:28,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:13:28,767 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) (.cse1 (+ c_~X_0~0.offset 4))) (and (forall ((v_ArrVal_486 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_486) c_~X_0~0.base))) (< (select .cse0 .cse1) (+ (select .cse0 .cse2) 1 c_~s_2~0)))) (forall ((v_ArrVal_486 (Array Int Int))) (let ((.cse3 (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_486) c_~X_0~0.base))) (<= (+ (select .cse3 .cse2) c_~s_2~0) (select .cse3 .cse1)))))) is different from false [2022-11-02 21:13:28,866 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~X_0~0.offset 4)) (.cse1 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0)))) (and (forall ((v_ArrVal_485 (Array Int Int)) (v_ArrVal_486 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_485) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_486) c_~X_0~0.base))) (<= (+ (select .cse0 .cse1) c_~s_2~0) (select .cse0 .cse2)))) (forall ((v_ArrVal_485 (Array Int Int)) (v_ArrVal_486 (Array Int Int))) (let ((.cse3 (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_485) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_486) c_~X_0~0.base))) (< (select .cse3 .cse2) (+ (select .cse3 .cse1) 1 c_~s_2~0)))))) is different from false [2022-11-02 21:13:28,896 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 21:13:28,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431675610] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:13:28,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:13:28,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 29, 12] total 46 [2022-11-02 21:13:28,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678959751] [2022-11-02 21:13:28,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:13:28,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-02 21:13:28,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:13:28,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-02 21:13:28,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1739, Unknown=2, NotChecked=170, Total=2070 [2022-11-02 21:13:28,904 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 207 [2022-11-02 21:13:28,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 660 transitions, 6718 flow. Second operand has 46 states, 46 states have (on average 102.0) internal successors, (4692), 46 states have internal predecessors, (4692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:28,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:13:28,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 207 [2022-11-02 21:13:28,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:13:49,956 INFO L130 PetriNetUnfolder]: 26183/54686 cut-off events. [2022-11-02 21:13:49,956 INFO L131 PetriNetUnfolder]: For 511520/512679 co-relation queries the response was YES. [2022-11-02 21:13:50,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301210 conditions, 54686 events. 26183/54686 cut-off events. For 511520/512679 co-relation queries the response was YES. Maximal size of possible extension queue 3042. Compared 601350 event pairs, 3351 based on Foata normal form. 200/51217 useless extension candidates. Maximal degree in co-relation 301149. Up to 26818 conditions per place. [2022-11-02 21:13:51,064 INFO L137 encePairwiseOnDemand]: 172/207 looper letters, 1006 selfloop transitions, 291 changer transitions 11/1390 dead transitions. [2022-11-02 21:13:51,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 1390 transitions, 17239 flow [2022-11-02 21:13:51,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-02 21:13:51,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-11-02 21:13:51,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 5480 transitions. [2022-11-02 21:13:51,073 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5091044221479004 [2022-11-02 21:13:51,074 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 5480 transitions. [2022-11-02 21:13:51,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 5480 transitions. [2022-11-02 21:13:51,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:13:51,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 5480 transitions. [2022-11-02 21:13:51,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 105.38461538461539) internal successors, (5480), 52 states have internal predecessors, (5480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:51,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 207.0) internal successors, (10971), 53 states have internal predecessors, (10971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:51,115 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 207.0) internal successors, (10971), 53 states have internal predecessors, (10971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:51,115 INFO L175 Difference]: Start difference. First operand has 315 places, 660 transitions, 6718 flow. Second operand 52 states and 5480 transitions. [2022-11-02 21:13:51,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 1390 transitions, 17239 flow [2022-11-02 21:14:02,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 1390 transitions, 16402 flow, removed 403 selfloop flow, removed 12 redundant places. [2022-11-02 21:14:02,068 INFO L231 Difference]: Finished difference. Result has 378 places, 910 transitions, 10421 flow [2022-11-02 21:14:02,069 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=6406, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=10421, PETRI_PLACES=378, PETRI_TRANSITIONS=910} [2022-11-02 21:14:02,070 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 198 predicate places. [2022-11-02 21:14:02,070 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 910 transitions, 10421 flow [2022-11-02 21:14:02,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 102.0) internal successors, (4692), 46 states have internal predecessors, (4692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:14:02,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:14:02,071 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-11-02 21:14:02,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:14:02,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:14:02,288 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 21:14:02,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:14:02,289 INFO L85 PathProgramCache]: Analyzing trace with hash 65591511, now seen corresponding path program 1 times [2022-11-02 21:14:02,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:14:02,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085467115] [2022-11-02 21:14:02,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:14:02,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:14:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:14:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 21:14:03,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:14:03,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085467115] [2022-11-02 21:14:03,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085467115] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:14:03,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034594079] [2022-11-02 21:14:03,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:14:03,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:14:03,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:14:03,776 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:14:03,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e7b333-f475-4e75-ac08-de3f054e248f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 21:14:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:14:03,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-02 21:14:03,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:14:04,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:14:04,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 21:14:04,594 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-02 21:14:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:14:04,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:14:05,074 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((v_ArrVal_535 (Array Int Int))) (<= (+ c_~t_4~0 c_~s_2~0) (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_535) c_~X_0~0.base) .cse0))) (forall ((v_ArrVal_535 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_535) c_~X_0~0.base) .cse0) (+ c_~t_4~0 1 c_~s_2~0))))) is different from false [2022-11-02 21:14:05,113 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:14:05,114 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 34 [2022-11-02 21:14:05,118 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 21:14:05,128 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:14:05,134 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 21:14:05,134 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 11 [2022-11-02 21:14:05,434 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 21:14:05,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034594079] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:14:05,435 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:14:05,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 17] total 43 [2022-11-02 21:14:05,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88237815] [2022-11-02 21:14:05,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:14:05,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-02 21:14:05,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:14:05,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-02 21:14:05,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1585, Unknown=1, NotChecked=80, Total=1806 [2022-11-02 21:14:05,442 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 207 [2022-11-02 21:14:05,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 910 transitions, 10421 flow. Second operand has 43 states, 43 states have (on average 108.65116279069767) internal successors, (4672), 43 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:14:05,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:14:05,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 207 [2022-11-02 21:14:05,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand