./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8 --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 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f --- 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-e04fb08 [2022-11-16 12:10:27,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:10:27,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:10:27,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:10:27,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:10:27,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:10:27,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:10:27,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:10:27,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:10:27,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:10:27,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:10:27,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:10:27,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:10:27,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:10:27,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:10:27,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:10:27,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:10:27,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:10:27,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:10:27,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:10:27,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:10:27,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:10:27,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:10:27,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:10:27,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:10:27,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:10:27,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:10:27,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:10:27,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:10:27,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:10:27,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:10:27,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:10:27,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:10:27,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:10:27,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:10:27,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:10:27,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:10:27,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:10:27,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:10:27,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:10:27,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:10:27,713 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:10:27,757 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:10:27,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:10:27,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:10:27,770 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:10:27,771 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:10:27,773 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:10:27,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:10:27,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:10:27,774 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:10:27,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:10:27,776 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:10:27,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:10:27,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:10:27,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:10:27,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:10:27,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:10:27,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:10:27,778 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:10:27,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:10:27,779 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:10:27,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:10:27,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:10:27,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:10:27,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:10:27,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:10:27,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:10:27,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:10:27,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:10:27,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:10:27,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:10:27,784 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:10:27,785 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:10:27,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:10:27,786 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_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f [2022-11-16 12:10:28,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:10:28,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:10:28,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:10:28,207 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:10:28,209 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:10:28,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2022-11-16 12:10:28,318 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/data/91f9addec/bdc458501a374d2aa1e25e4cd2fa7690/FLAG97b375bcc [2022-11-16 12:10:28,945 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:10:28,946 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2022-11-16 12:10:28,955 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/data/91f9addec/bdc458501a374d2aa1e25e4cd2fa7690/FLAG97b375bcc [2022-11-16 12:10:29,289 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/data/91f9addec/bdc458501a374d2aa1e25e4cd2fa7690 [2022-11-16 12:10:29,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:10:29,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:10:29,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:10:29,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:10:29,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:10:29,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:10:29" (1/1) ... [2022-11-16 12:10:29,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@359c26c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:29, skipping insertion in model container [2022-11-16 12:10:29,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:10:29" (1/1) ... [2022-11-16 12:10:29,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:10:29,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:10:29,670 WARN L229 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_7e21830e-30e9-4467-9b59-8768317bf0f8/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c[2533,2546] [2022-11-16 12:10:29,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:10:29,717 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:10:29,767 WARN L229 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_7e21830e-30e9-4467-9b59-8768317bf0f8/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c[2533,2546] [2022-11-16 12:10:29,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:10:29,811 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:10:29,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:29 WrapperNode [2022-11-16 12:10:29,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:10:29,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:10:29,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:10:29,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:10:29,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:29" (1/1) ... [2022-11-16 12:10:29,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:29" (1/1) ... [2022-11-16 12:10:29,898 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 225 [2022-11-16 12:10:29,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:10:29,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:10:29,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:10:29,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:10:29,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:29" (1/1) ... [2022-11-16 12:10:29,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:29" (1/1) ... [2022-11-16 12:10:29,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:29" (1/1) ... [2022-11-16 12:10:29,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:29" (1/1) ... [2022-11-16 12:10:29,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:29" (1/1) ... [2022-11-16 12:10:29,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:29" (1/1) ... [2022-11-16 12:10:29,946 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:29" (1/1) ... [2022-11-16 12:10:29,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:29" (1/1) ... [2022-11-16 12:10:29,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:10:29,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:10:29,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:10:29,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:10:29,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:29" (1/1) ... [2022-11-16 12:10:29,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:10:29,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:30,003 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:10:30,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:10:30,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:10:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:10:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:10:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:10:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:10:30,051 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:10:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:10:30,052 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:10:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:10:30,052 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:10:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:10:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:10:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:10:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:10:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:10:30,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:10:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:10:30,055 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:10:30,226 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:10:30,229 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:10:30,838 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:10:31,042 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:10:31,043 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 12:10:31,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:10:31 BoogieIcfgContainer [2022-11-16 12:10:31,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:10:31,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:10:31,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:10:31,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:10:31,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:10:29" (1/3) ... [2022-11-16 12:10:31,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cebbfad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:10:31, skipping insertion in model container [2022-11-16 12:10:31,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:29" (2/3) ... [2022-11-16 12:10:31,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cebbfad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:10:31, skipping insertion in model container [2022-11-16 12:10:31,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:10:31" (3/3) ... [2022-11-16 12:10:31,062 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2022-11-16 12:10:31,090 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:10:31,104 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:10:31,104 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:10:31,105 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:10:31,264 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:10:31,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 227 transitions, 478 flow [2022-11-16 12:10:31,438 INFO L130 PetriNetUnfolder]: 18/224 cut-off events. [2022-11-16 12:10:31,438 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:10:31,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 224 events. 18/224 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 327 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 186. Up to 2 conditions per place. [2022-11-16 12:10:31,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 227 transitions, 478 flow [2022-11-16 12:10:31,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 213 transitions, 444 flow [2022-11-16 12:10:31,488 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:10:31,507 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;@7104dad9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:10:31,508 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 12:10:31,597 INFO L130 PetriNetUnfolder]: 18/212 cut-off events. [2022-11-16 12:10:31,597 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:10:31,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:31,599 INFO L209 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] [2022-11-16 12:10:31,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:10:31,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:31,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2001770306, now seen corresponding path program 1 times [2022-11-16 12:10:31,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:31,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710666235] [2022-11-16 12:10:31,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:31,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:31,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:31,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710666235] [2022-11-16 12:10:32,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710666235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:32,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:32,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:10:32,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533378529] [2022-11-16 12:10:32,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:32,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:10:32,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:32,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:10:32,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:10:32,076 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 227 [2022-11-16 12:10:32,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 213 transitions, 444 flow. Second operand has 2 states, 2 states have (on average 212.0) internal successors, (424), 2 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:32,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:32,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 227 [2022-11-16 12:10:32,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:32,206 INFO L130 PetriNetUnfolder]: 11/222 cut-off events. [2022-11-16 12:10:32,206 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-16 12:10:32,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 222 events. 11/222 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 458 event pairs, 2 based on Foata normal form. 25/230 useless extension candidates. Maximal degree in co-relation 178. Up to 15 conditions per place. [2022-11-16 12:10:32,212 INFO L137 encePairwiseOnDemand]: 215/227 looper letters, 7 selfloop transitions, 0 changer transitions 4/201 dead transitions. [2022-11-16 12:10:32,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 201 transitions, 434 flow [2022-11-16 12:10:32,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:10:32,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:10:32,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 433 transitions. [2022-11-16 12:10:32,244 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9537444933920705 [2022-11-16 12:10:32,245 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 433 transitions. [2022-11-16 12:10:32,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 433 transitions. [2022-11-16 12:10:32,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:32,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 433 transitions. [2022-11-16 12:10:32,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 216.5) internal successors, (433), 2 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:32,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:32,278 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:32,280 INFO L175 Difference]: Start difference. First operand has 205 places, 213 transitions, 444 flow. Second operand 2 states and 433 transitions. [2022-11-16 12:10:32,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 201 transitions, 434 flow [2022-11-16 12:10:32,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 201 transitions, 422 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 12:10:32,301 INFO L231 Difference]: Finished difference. Result has 200 places, 197 transitions, 400 flow [2022-11-16 12:10:32,304 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=400, PETRI_PLACES=200, PETRI_TRANSITIONS=197} [2022-11-16 12:10:32,309 INFO L288 CegarLoopForPetriNet]: 205 programPoint places, -5 predicate places. [2022-11-16 12:10:32,309 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 197 transitions, 400 flow [2022-11-16 12:10:32,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 212.0) internal successors, (424), 2 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:32,310 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:32,311 INFO L209 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] [2022-11-16 12:10:32,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:10:32,312 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:10:32,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:32,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1893205626, now seen corresponding path program 1 times [2022-11-16 12:10:32,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:32,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051457066] [2022-11-16 12:10:32,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:32,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:33,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:33,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:33,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051457066] [2022-11-16 12:10:33,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051457066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:33,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:33,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:10:33,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661414833] [2022-11-16 12:10:33,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:33,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:10:33,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:33,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:10:33,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:10:33,217 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 227 [2022-11-16 12:10:33,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 197 transitions, 400 flow. Second operand has 8 states, 8 states have (on average 170.5) internal successors, (1364), 8 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:33,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:33,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 227 [2022-11-16 12:10:33,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:33,750 INFO L130 PetriNetUnfolder]: 194/825 cut-off events. [2022-11-16 12:10:33,750 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-16 12:10:33,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1125 conditions, 825 events. 194/825 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4244 event pairs, 92 based on Foata normal form. 1/659 useless extension candidates. Maximal degree in co-relation 1122. Up to 270 conditions per place. [2022-11-16 12:10:33,764 INFO L137 encePairwiseOnDemand]: 217/227 looper letters, 42 selfloop transitions, 6 changer transitions 4/205 dead transitions. [2022-11-16 12:10:33,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 205 transitions, 520 flow [2022-11-16 12:10:33,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:10:33,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:10:33,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1547 transitions. [2022-11-16 12:10:33,771 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7572197748409202 [2022-11-16 12:10:33,771 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1547 transitions. [2022-11-16 12:10:33,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1547 transitions. [2022-11-16 12:10:33,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:33,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1547 transitions. [2022-11-16 12:10:33,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 171.88888888888889) internal successors, (1547), 9 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:33,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 227.0) internal successors, (2270), 10 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:33,787 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 227.0) internal successors, (2270), 10 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:33,788 INFO L175 Difference]: Start difference. First operand has 200 places, 197 transitions, 400 flow. Second operand 9 states and 1547 transitions. [2022-11-16 12:10:33,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 205 transitions, 520 flow [2022-11-16 12:10:33,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 205 transitions, 520 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:10:33,802 INFO L231 Difference]: Finished difference. Result has 208 places, 198 transitions, 426 flow [2022-11-16 12:10:33,803 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=426, PETRI_PLACES=208, PETRI_TRANSITIONS=198} [2022-11-16 12:10:33,804 INFO L288 CegarLoopForPetriNet]: 205 programPoint places, 3 predicate places. [2022-11-16 12:10:33,805 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 198 transitions, 426 flow [2022-11-16 12:10:33,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 170.5) internal successors, (1364), 8 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:33,806 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:33,807 INFO L209 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] [2022-11-16 12:10:33,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:10:33,808 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:10:33,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:33,811 INFO L85 PathProgramCache]: Analyzing trace with hash 790183228, now seen corresponding path program 1 times [2022-11-16 12:10:33,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:33,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847692222] [2022-11-16 12:10:33,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:33,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:34,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:34,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847692222] [2022-11-16 12:10:34,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847692222] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:34,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133813445] [2022-11-16 12:10:34,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:34,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:34,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:34,126 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:34,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:10:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:34,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:10:34,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:34,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:34,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:35,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:35,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133813445] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:35,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:10:35,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-11-16 12:10:35,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340520788] [2022-11-16 12:10:35,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:35,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:10:35,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:35,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:10:35,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:10:35,032 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 227 [2022-11-16 12:10:35,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 198 transitions, 426 flow. Second operand has 7 states, 7 states have (on average 186.42857142857142) internal successors, (1305), 7 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:35,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:35,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 227 [2022-11-16 12:10:35,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:35,333 INFO L130 PetriNetUnfolder]: 73/535 cut-off events. [2022-11-16 12:10:35,333 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-16 12:10:35,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 707 conditions, 535 events. 73/535 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2097 event pairs, 30 based on Foata normal form. 0/478 useless extension candidates. Maximal degree in co-relation 699. Up to 69 conditions per place. [2022-11-16 12:10:35,343 INFO L137 encePairwiseOnDemand]: 219/227 looper letters, 32 selfloop transitions, 7 changer transitions 0/205 dead transitions. [2022-11-16 12:10:35,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 205 transitions, 520 flow [2022-11-16 12:10:35,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:10:35,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:10:35,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1320 transitions. [2022-11-16 12:10:35,348 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8307111390811831 [2022-11-16 12:10:35,348 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1320 transitions. [2022-11-16 12:10:35,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1320 transitions. [2022-11-16 12:10:35,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:35,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1320 transitions. [2022-11-16 12:10:35,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 188.57142857142858) internal successors, (1320), 7 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:35,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 227.0) internal successors, (1816), 8 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:35,384 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 227.0) internal successors, (1816), 8 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:35,385 INFO L175 Difference]: Start difference. First operand has 208 places, 198 transitions, 426 flow. Second operand 7 states and 1320 transitions. [2022-11-16 12:10:35,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 205 transitions, 520 flow [2022-11-16 12:10:35,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 205 transitions, 504 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-16 12:10:35,392 INFO L231 Difference]: Finished difference. Result has 207 places, 200 transitions, 443 flow [2022-11-16 12:10:35,393 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=443, PETRI_PLACES=207, PETRI_TRANSITIONS=200} [2022-11-16 12:10:35,394 INFO L288 CegarLoopForPetriNet]: 205 programPoint places, 2 predicate places. [2022-11-16 12:10:35,395 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 200 transitions, 443 flow [2022-11-16 12:10:35,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 186.42857142857142) internal successors, (1305), 7 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:35,396 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:35,396 INFO L209 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] [2022-11-16 12:10:35,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:35,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:35,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:10:35,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:35,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1915726308, now seen corresponding path program 1 times [2022-11-16 12:10:35,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:35,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536578462] [2022-11-16 12:10:35,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:35,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:36,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:10:36,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:36,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536578462] [2022-11-16 12:10:36,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536578462] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:36,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887672881] [2022-11-16 12:10:36,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:36,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:36,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:36,033 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:36,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:10:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:36,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:10:36,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:36,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:10:36,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:10:37,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887672881] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:37,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:10:37,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 19 [2022-11-16 12:10:37,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830891414] [2022-11-16 12:10:37,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:37,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:10:37,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:37,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:10:37,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:10:37,033 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 227 [2022-11-16 12:10:37,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 200 transitions, 443 flow. Second operand has 9 states, 9 states have (on average 179.22222222222223) internal successors, (1613), 9 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:37,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:37,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 227 [2022-11-16 12:10:37,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:37,935 INFO L130 PetriNetUnfolder]: 765/2344 cut-off events. [2022-11-16 12:10:37,936 INFO L131 PetriNetUnfolder]: For 598/822 co-relation queries the response was YES. [2022-11-16 12:10:37,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3925 conditions, 2344 events. 765/2344 cut-off events. For 598/822 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 16232 event pairs, 126 based on Foata normal form. 224/2167 useless extension candidates. Maximal degree in co-relation 3917. Up to 375 conditions per place. [2022-11-16 12:10:37,965 INFO L137 encePairwiseOnDemand]: 214/227 looper letters, 76 selfloop transitions, 18 changer transitions 0/253 dead transitions. [2022-11-16 12:10:37,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 253 transitions, 778 flow [2022-11-16 12:10:37,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:10:37,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:10:37,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1849 transitions. [2022-11-16 12:10:37,972 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8145374449339207 [2022-11-16 12:10:37,972 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1849 transitions. [2022-11-16 12:10:37,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1849 transitions. [2022-11-16 12:10:37,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:37,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1849 transitions. [2022-11-16 12:10:38,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 184.9) internal successors, (1849), 10 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:38,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 227.0) internal successors, (2497), 11 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:38,029 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 227.0) internal successors, (2497), 11 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:38,029 INFO L175 Difference]: Start difference. First operand has 207 places, 200 transitions, 443 flow. Second operand 10 states and 1849 transitions. [2022-11-16 12:10:38,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 253 transitions, 778 flow [2022-11-16 12:10:38,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 253 transitions, 766 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:10:38,038 INFO L231 Difference]: Finished difference. Result has 217 places, 212 transitions, 543 flow [2022-11-16 12:10:38,039 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=543, PETRI_PLACES=217, PETRI_TRANSITIONS=212} [2022-11-16 12:10:38,041 INFO L288 CegarLoopForPetriNet]: 205 programPoint places, 12 predicate places. [2022-11-16 12:10:38,041 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 212 transitions, 543 flow [2022-11-16 12:10:38,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 179.22222222222223) internal successors, (1613), 9 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:38,042 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:38,043 INFO L209 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] [2022-11-16 12:10:38,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:38,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:38,244 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:10:38,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:38,244 INFO L85 PathProgramCache]: Analyzing trace with hash 2034379310, now seen corresponding path program 2 times [2022-11-16 12:10:38,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:38,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044070330] [2022-11-16 12:10:38,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:38,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:38,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:10:38,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:38,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044070330] [2022-11-16 12:10:38,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044070330] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:38,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854779833] [2022-11-16 12:10:38,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:10:38,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:38,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:38,614 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:38,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:10:38,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:10:38,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:38,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:10:38,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:39,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:10:39,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:10:39,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854779833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:39,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:10:39,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-16 12:10:39,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990020858] [2022-11-16 12:10:39,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:39,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:10:39,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:39,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:10:39,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:10:39,354 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 227 [2022-11-16 12:10:39,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 212 transitions, 543 flow. Second operand has 6 states, 6 states have (on average 178.33333333333334) internal successors, (1070), 6 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:39,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:39,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 227 [2022-11-16 12:10:39,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:40,028 INFO L130 PetriNetUnfolder]: 324/1503 cut-off events. [2022-11-16 12:10:40,028 INFO L131 PetriNetUnfolder]: For 672/774 co-relation queries the response was YES. [2022-11-16 12:10:40,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2589 conditions, 1503 events. 324/1503 cut-off events. For 672/774 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 8904 event pairs, 68 based on Foata normal form. 113/1485 useless extension candidates. Maximal degree in co-relation 2576. Up to 267 conditions per place. [2022-11-16 12:10:40,049 INFO L137 encePairwiseOnDemand]: 218/227 looper letters, 43 selfloop transitions, 10 changer transitions 0/218 dead transitions. [2022-11-16 12:10:40,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 218 transitions, 672 flow [2022-11-16 12:10:40,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:10:40,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:10:40,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1429 transitions. [2022-11-16 12:10:40,054 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7868942731277533 [2022-11-16 12:10:40,054 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1429 transitions. [2022-11-16 12:10:40,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1429 transitions. [2022-11-16 12:10:40,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:40,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1429 transitions. [2022-11-16 12:10:40,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 178.625) internal successors, (1429), 8 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:40,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 227.0) internal successors, (2043), 9 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:40,067 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 227.0) internal successors, (2043), 9 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:40,068 INFO L175 Difference]: Start difference. First operand has 217 places, 212 transitions, 543 flow. Second operand 8 states and 1429 transitions. [2022-11-16 12:10:40,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 218 transitions, 672 flow [2022-11-16 12:10:40,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 218 transitions, 665 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:10:40,082 INFO L231 Difference]: Finished difference. Result has 221 places, 212 transitions, 563 flow [2022-11-16 12:10:40,083 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=563, PETRI_PLACES=221, PETRI_TRANSITIONS=212} [2022-11-16 12:10:40,086 INFO L288 CegarLoopForPetriNet]: 205 programPoint places, 16 predicate places. [2022-11-16 12:10:40,087 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 212 transitions, 563 flow [2022-11-16 12:10:40,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 178.33333333333334) internal successors, (1070), 6 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:40,088 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:40,088 INFO L209 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] [2022-11-16 12:10:40,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:40,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:40,295 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:10:40,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:40,296 INFO L85 PathProgramCache]: Analyzing trace with hash -784935295, now seen corresponding path program 1 times [2022-11-16 12:10:40,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:40,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281514865] [2022-11-16 12:10:40,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:40,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:43,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:43,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:43,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281514865] [2022-11-16 12:10:43,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281514865] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:43,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439285336] [2022-11-16 12:10:43,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:43,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:43,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:43,887 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:43,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:10:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:44,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-16 12:10:44,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:45,750 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:10:47,235 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:10:47,535 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:10:47,760 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:10:49,923 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-16 12:10:49,923 INFO L350 Elim1Store]: Elim1 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 73 treesize of output 40 [2022-11-16 12:10:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:50,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:53,109 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (forall ((v_ArrVal_161 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_161) c_~A~0.base))) (let ((.cse0 (+ c_~mts3~0 (select .cse1 .cse2)))) (or (= .cse0 0) (< 0 (+ (select .cse1 c_~A~0.offset) c_~mts1~0 1)) (< .cse0 0))))) (forall ((v_ArrVal_161 (Array Int Int))) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_161) c_~A~0.base))) (or (< 0 (+ (select .cse3 c_~A~0.offset) c_~mts1~0 1)) (< (+ c_~sum~0 (select .cse3 .cse2) c_~mts2~0) 1)))))) is different from false [2022-11-16 12:10:53,341 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (forall ((v_ArrVal_160 (Array Int Int)) (v_ArrVal_161 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_160) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_161) c_~A~0.base))) (let ((.cse1 (+ c_~mts3~0 (select .cse0 .cse2)))) (or (< 0 (+ c_~mts1~0 (select .cse0 c_~A~0.offset) 1)) (< .cse1 0) (= .cse1 0))))) (forall ((v_ArrVal_160 (Array Int Int)) (v_ArrVal_161 (Array Int Int))) (let ((.cse3 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_160) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_161) c_~A~0.base))) (or (< (+ c_~sum~0 c_~mts2~0 (select .cse3 .cse2)) 1) (< 0 (+ c_~mts1~0 (select .cse3 c_~A~0.offset) 1))))))) is different from false [2022-11-16 12:10:53,591 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (forall ((v_ArrVal_160 (Array Int Int)) (v_ArrVal_161 (Array Int Int)) (v_ArrVal_159 (Array Int Int))) (let ((.cse0 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_159) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_160) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_161) c_~A~0.base))) (or (< 0 (+ c_~mts1~0 (select .cse0 c_~A~0.offset) 1)) (< (+ c_~sum~0 (select .cse0 .cse1) c_~mts2~0) 1)))) (forall ((v_ArrVal_160 (Array Int Int)) (v_ArrVal_161 (Array Int Int)) (v_ArrVal_159 (Array Int Int))) (let ((.cse3 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_159) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_160) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_161) c_~A~0.base))) (let ((.cse2 (+ c_~mts3~0 (select .cse3 .cse1)))) (or (= .cse2 0) (< 0 (+ c_~mts1~0 (select .cse3 c_~A~0.offset) 1)) (< .cse2 0))))))) is different from false [2022-11-16 12:10:54,103 WARN L833 $PredicateComparison]: unable to prove that (or (let ((.cse1 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (forall ((v_ArrVal_160 (Array Int Int)) (v_ArrVal_161 (Array Int Int)) (v_ArrVal_159 (Array Int Int))) (let ((.cse0 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_159) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_160) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_161) c_~A~0.base))) (or (< 0 (+ c_~mts1~0 (select .cse0 c_~A~0.offset) 1)) (< (+ c_~sum~0 (select .cse0 .cse1) c_~mts2~0) 1)))) (forall ((v_ArrVal_160 (Array Int Int)) (v_ArrVal_161 (Array Int Int)) (v_ArrVal_159 (Array Int Int))) (let ((.cse3 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_159) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_160) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_161) c_~A~0.base))) (let ((.cse2 (+ c_~mts3~0 (select .cse3 .cse1)))) (or (= .cse2 0) (< 0 (+ c_~mts1~0 (select .cse3 c_~A~0.offset) 1)) (< .cse2 0))))))) (= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) is different from false [2022-11-16 12:10:57,442 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:10:57,443 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 76 [2022-11-16 12:10:57,462 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:10:57,463 INFO L350 Elim1Store]: Elim1 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 454 treesize of output 444 [2022-11-16 12:10:57,493 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:10:57,494 INFO L350 Elim1Store]: Elim1 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 434 treesize of output 388 [2022-11-16 12:10:57,519 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:10:57,520 INFO L350 Elim1Store]: Elim1 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 378 treesize of output 360 [2022-11-16 12:10:57,548 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:10:57,548 INFO L350 Elim1Store]: Elim1 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 181 treesize of output 177 [2022-11-16 12:10:59,809 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:10:59,810 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 55 [2022-11-16 12:10:59,834 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:10:59,835 INFO L350 Elim1Store]: Elim1 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 627 treesize of output 607 [2022-11-16 12:10:59,872 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:10:59,878 INFO L350 Elim1Store]: Elim1 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 603 treesize of output 575 [2022-11-16 12:10:59,906 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:10:59,907 INFO L350 Elim1Store]: Elim1 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 571 treesize of output 511 [2022-11-16 12:10:59,952 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:10:59,953 INFO L350 Elim1Store]: Elim1 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 261 treesize of output 249 [2022-11-16 12:11:02,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:02,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439285336] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:11:02,405 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:11:02,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 40, 36] total 104 [2022-11-16 12:11:02,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10862105] [2022-11-16 12:11:02,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:11:02,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-11-16 12:11:02,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:02,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-11-16 12:11:02,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=899, Invalid=8992, Unknown=25, NotChecked=796, Total=10712 [2022-11-16 12:11:02,428 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 227 [2022-11-16 12:11:02,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 212 transitions, 563 flow. Second operand has 104 states, 104 states have (on average 102.54807692307692) internal successors, (10665), 104 states have internal predecessors, (10665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:02,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:02,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 227 [2022-11-16 12:11:02,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:27,064 INFO L130 PetriNetUnfolder]: 161572/300606 cut-off events. [2022-11-16 12:13:27,064 INFO L131 PetriNetUnfolder]: For 232298/232330 co-relation queries the response was YES. [2022-11-16 12:13:28,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664873 conditions, 300606 events. 161572/300606 cut-off events. For 232298/232330 co-relation queries the response was YES. Maximal size of possible extension queue 4495. Compared 3309020 event pairs, 9592 based on Foata normal form. 13/287129 useless extension candidates. Maximal degree in co-relation 664859. Up to 27494 conditions per place. [2022-11-16 12:13:29,627 INFO L137 encePairwiseOnDemand]: 167/227 looper letters, 3351 selfloop transitions, 785 changer transitions 25/4254 dead transitions. [2022-11-16 12:13:29,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 4254 transitions, 22845 flow [2022-11-16 12:13:29,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2022-11-16 12:13:29,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2022-11-16 12:13:29,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 25640 transitions. [2022-11-16 12:13:29,715 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.511092949548508 [2022-11-16 12:13:29,715 INFO L72 ComplementDD]: Start complementDD. Operand 221 states and 25640 transitions. [2022-11-16 12:13:29,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 221 states and 25640 transitions. [2022-11-16 12:13:29,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:29,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 221 states and 25640 transitions. [2022-11-16 12:13:30,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 222 states, 221 states have (on average 116.01809954751131) internal successors, (25640), 221 states have internal predecessors, (25640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:30,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 222 states, 222 states have (on average 227.0) internal successors, (50394), 222 states have internal predecessors, (50394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:30,141 INFO L81 ComplementDD]: Finished complementDD. Result has 222 states, 222 states have (on average 227.0) internal successors, (50394), 222 states have internal predecessors, (50394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:30,142 INFO L175 Difference]: Start difference. First operand has 221 places, 212 transitions, 563 flow. Second operand 221 states and 25640 transitions. [2022-11-16 12:13:30,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 4254 transitions, 22845 flow [2022-11-16 12:14:05,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 4254 transitions, 22225 flow, removed 26 selfloop flow, removed 6 redundant places. [2022-11-16 12:14:05,288 INFO L231 Difference]: Finished difference. Result has 604 places, 1078 transitions, 6938 flow [2022-11-16 12:14:05,289 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=221, PETRI_FLOW=6938, PETRI_PLACES=604, PETRI_TRANSITIONS=1078} [2022-11-16 12:14:05,290 INFO L288 CegarLoopForPetriNet]: 205 programPoint places, 399 predicate places. [2022-11-16 12:14:05,290 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 1078 transitions, 6938 flow [2022-11-16 12:14:05,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 102.54807692307692) internal successors, (10665), 104 states have internal predecessors, (10665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:05,294 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:14:05,295 INFO L209 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] [2022-11-16 12:14:05,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:05,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:05,502 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:14:05,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:05,502 INFO L85 PathProgramCache]: Analyzing trace with hash 56492101, now seen corresponding path program 2 times [2022-11-16 12:14:05,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:05,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231677689] [2022-11-16 12:14:05,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:05,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:09,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:09,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:09,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231677689] [2022-11-16 12:14:09,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231677689] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:09,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774045578] [2022-11-16 12:14:09,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:14:09,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:09,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:09,358 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:09,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e21830e-30e9-4467-9b59-8768317bf0f8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:14:09,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:14:09,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:14:09,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-16 12:14:09,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:12,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:14:12,254 INFO L350 Elim1Store]: Elim1 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 18 treesize of output 20 [2022-11-16 12:14:13,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:14:13,045 INFO L350 Elim1Store]: Elim1 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 18 treesize of output 20 [2022-11-16 12:14:14,209 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:14,210 INFO L350 Elim1Store]: Elim1 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 65 treesize of output 47 [2022-11-16 12:14:16,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:16,544 INFO L328 TraceCheckSpWp]: Computing backward predicates...