./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 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro --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-8393723 [2022-11-18 20:59:02,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:59:02,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:59:02,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:59:02,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:59:02,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:59:02,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:59:02,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:59:02,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:59:02,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:59:02,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:59:02,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:59:02,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:59:02,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:59:02,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:59:02,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:59:02,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:59:02,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:59:02,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:59:02,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:59:02,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:59:02,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:59:02,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:59:02,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:59:02,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:59:02,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:59:02,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:59:02,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:59:02,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:59:02,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:59:02,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:59:02,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:59:02,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:59:02,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:59:02,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:59:02,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:59:02,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:59:02,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:59:02,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:59:02,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:59:02,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:59:02,636 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:59:02,688 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:59:02,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:59:02,689 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:59:02,689 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:59:02,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:59:02,690 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:59:02,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:59:02,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:59:02,691 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:59:02,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:59:02,691 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:59:02,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:59:02,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:59:02,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:59:02,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:59:02,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:59:02,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:59:02,692 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:59:02,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:59:02,693 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:59:02,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:59:02,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:59:02,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:59:02,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:59:02,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:59:02,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:59:02,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:59:02,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:59:02,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:59:02,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:59:02,695 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:59:02,695 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:59:02,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:59:02,695 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_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f [2022-11-18 20:59:02,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:59:02,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:59:02,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:59:02,961 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:59:02,962 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:59:02,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2022-11-18 20:59:03,024 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/data/9a50bebba/693bd554e75542799a353370ac92a984/FLAG3ab5100f2 [2022-11-18 20:59:03,462 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:59:03,463 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2022-11-18 20:59:03,476 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/data/9a50bebba/693bd554e75542799a353370ac92a984/FLAG3ab5100f2 [2022-11-18 20:59:03,853 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/data/9a50bebba/693bd554e75542799a353370ac92a984 [2022-11-18 20:59:03,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:59:03,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:59:03,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:59:03,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:59:03,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:59:03,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:59:03" (1/1) ... [2022-11-18 20:59:03,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17120db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:03, skipping insertion in model container [2022-11-18 20:59:03,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:59:03" (1/1) ... [2022-11-18 20:59:03,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:59:03,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:59:04,073 WARN L234 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_933b5d5f-b399-4fdd-9e00-963beace38ce/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c[2533,2546] [2022-11-18 20:59:04,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:59:04,091 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:59:04,114 WARN L234 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_933b5d5f-b399-4fdd-9e00-963beace38ce/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c[2533,2546] [2022-11-18 20:59:04,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:59:04,132 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:59:04,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:04 WrapperNode [2022-11-18 20:59:04,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:59:04,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:59:04,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:59:04,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:59:04,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:04" (1/1) ... [2022-11-18 20:59:04,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:04" (1/1) ... [2022-11-18 20:59:04,180 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 225 [2022-11-18 20:59:04,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:59:04,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:59:04,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:59:04,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:59:04,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:04" (1/1) ... [2022-11-18 20:59:04,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:04" (1/1) ... [2022-11-18 20:59:04,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:04" (1/1) ... [2022-11-18 20:59:04,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:04" (1/1) ... [2022-11-18 20:59:04,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:04" (1/1) ... [2022-11-18 20:59:04,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:04" (1/1) ... [2022-11-18 20:59:04,212 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:04" (1/1) ... [2022-11-18 20:59:04,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:04" (1/1) ... [2022-11-18 20:59:04,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:59:04,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:59:04,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:59:04,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:59:04,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:04" (1/1) ... [2022-11-18 20:59:04,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:59:04,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:59:04,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:59:04,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:59:04,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:59:04,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:59:04,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:59:04,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:59:04,299 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:59:04,300 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:59:04,300 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:59:04,300 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:59:04,301 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:59:04,302 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:59:04,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:59:04,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:59:04,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:59:04,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:59:04,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:59:04,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:59:04,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:59:04,305 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:59:04,423 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:59:04,425 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:59:04,878 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:59:05,057 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:59:05,057 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 20:59:05,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:59:05 BoogieIcfgContainer [2022-11-18 20:59:05,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:59:05,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:59:05,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:59:05,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:59:05,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:59:03" (1/3) ... [2022-11-18 20:59:05,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd4e413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:59:05, skipping insertion in model container [2022-11-18 20:59:05,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:04" (2/3) ... [2022-11-18 20:59:05,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd4e413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:59:05, skipping insertion in model container [2022-11-18 20:59:05,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:59:05" (3/3) ... [2022-11-18 20:59:05,069 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2022-11-18 20:59:05,078 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:59:05,088 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:59:05,088 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:59:05,088 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:59:05,201 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:59:05,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 227 transitions, 478 flow [2022-11-18 20:59:05,371 INFO L130 PetriNetUnfolder]: 18/224 cut-off events. [2022-11-18 20:59:05,371 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:59:05,378 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. [2022-11-18 20:59:05,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 227 transitions, 478 flow [2022-11-18 20:59:05,385 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 213 transitions, 444 flow [2022-11-18 20:59:05,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:59:05,403 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;@1a941fb6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:59:05,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-18 20:59:05,454 INFO L130 PetriNetUnfolder]: 18/212 cut-off events. [2022-11-18 20:59:05,454 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:59:05,454 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:59:05,455 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] [2022-11-18 20:59:05,456 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)] === [2022-11-18 20:59:05,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:05,461 INFO L85 PathProgramCache]: Analyzing trace with hash 2001770306, now seen corresponding path program 1 times [2022-11-18 20:59:05,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:05,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298913226] [2022-11-18 20:59:05,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:05,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:05,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:05,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298913226] [2022-11-18 20:59:05,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298913226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:05,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:05,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:59:05,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342447312] [2022-11-18 20:59:05,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:05,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:59:05,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:05,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:59:05,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:59:05,791 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 227 [2022-11-18 20:59:05,799 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) [2022-11-18 20:59:05,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:59:05,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 227 [2022-11-18 20:59:05,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:59:05,924 INFO L130 PetriNetUnfolder]: 11/222 cut-off events. [2022-11-18 20:59:05,924 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-18 20:59:05,930 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. [2022-11-18 20:59:05,932 INFO L137 encePairwiseOnDemand]: 215/227 looper letters, 7 selfloop transitions, 0 changer transitions 4/201 dead transitions. [2022-11-18 20:59:05,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 201 transitions, 434 flow [2022-11-18 20:59:05,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:59:05,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:59:05,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 433 transitions. [2022-11-18 20:59:05,956 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9537444933920705 [2022-11-18 20:59:05,957 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 433 transitions. [2022-11-18 20:59:05,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 433 transitions. [2022-11-18 20:59:05,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:59:05,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 433 transitions. [2022-11-18 20:59:05,968 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) [2022-11-18 20:59:05,979 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) [2022-11-18 20:59:05,979 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) [2022-11-18 20:59:05,981 INFO L175 Difference]: Start difference. First operand has 205 places, 213 transitions, 444 flow. Second operand 2 states and 433 transitions. [2022-11-18 20:59:05,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 201 transitions, 434 flow [2022-11-18 20:59:05,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 201 transitions, 422 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 20:59:05,990 INFO L231 Difference]: Finished difference. Result has 200 places, 197 transitions, 400 flow [2022-11-18 20:59:05,996 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} [2022-11-18 20:59:06,002 INFO L288 CegarLoopForPetriNet]: 205 programPoint places, -5 predicate places. [2022-11-18 20:59:06,003 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 197 transitions, 400 flow [2022-11-18 20:59:06,004 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) [2022-11-18 20:59:06,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:59:06,004 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] [2022-11-18 20:59:06,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:59:06,005 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)] === [2022-11-18 20:59:06,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:06,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1893205626, now seen corresponding path program 1 times [2022-11-18 20:59:06,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:06,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85429591] [2022-11-18 20:59:06,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:06,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:06,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:06,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:06,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85429591] [2022-11-18 20:59:06,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85429591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:06,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:06,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:59:06,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896860462] [2022-11-18 20:59:06,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:06,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:59:06,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:06,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:59:06,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:59:06,740 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 227 [2022-11-18 20:59:06,742 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) [2022-11-18 20:59:06,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:59:06,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 227 [2022-11-18 20:59:06,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:59:07,135 INFO L130 PetriNetUnfolder]: 194/825 cut-off events. [2022-11-18 20:59:07,136 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-18 20:59:07,140 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. [2022-11-18 20:59:07,145 INFO L137 encePairwiseOnDemand]: 217/227 looper letters, 42 selfloop transitions, 6 changer transitions 4/205 dead transitions. [2022-11-18 20:59:07,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 205 transitions, 520 flow [2022-11-18 20:59:07,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:59:07,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:59:07,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1547 transitions. [2022-11-18 20:59:07,151 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7572197748409202 [2022-11-18 20:59:07,152 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1547 transitions. [2022-11-18 20:59:07,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1547 transitions. [2022-11-18 20:59:07,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:59:07,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1547 transitions. [2022-11-18 20:59:07,185 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) [2022-11-18 20:59:07,191 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) [2022-11-18 20:59:07,193 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) [2022-11-18 20:59:07,193 INFO L175 Difference]: Start difference. First operand has 200 places, 197 transitions, 400 flow. Second operand 9 states and 1547 transitions. [2022-11-18 20:59:07,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 205 transitions, 520 flow [2022-11-18 20:59:07,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 205 transitions, 520 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:59:07,198 INFO L231 Difference]: Finished difference. Result has 208 places, 198 transitions, 426 flow [2022-11-18 20:59:07,199 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} [2022-11-18 20:59:07,199 INFO L288 CegarLoopForPetriNet]: 205 programPoint places, 3 predicate places. [2022-11-18 20:59:07,200 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 198 transitions, 426 flow [2022-11-18 20:59:07,201 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) [2022-11-18 20:59:07,201 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:59:07,201 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] [2022-11-18 20:59:07,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:59:07,202 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)] === [2022-11-18 20:59:07,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:07,202 INFO L85 PathProgramCache]: Analyzing trace with hash 790183228, now seen corresponding path program 1 times [2022-11-18 20:59:07,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:07,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175832159] [2022-11-18 20:59:07,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:07,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:07,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:07,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:07,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175832159] [2022-11-18 20:59:07,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175832159] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:59:07,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562651776] [2022-11-18 20:59:07,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:07,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:07,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:59:07,423 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:59:07,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:59:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:07,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:59:07,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:07,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:07,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:59:08,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:08,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562651776] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 20:59:08,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:59:08,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-11-18 20:59:08,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869727080] [2022-11-18 20:59:08,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:08,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:59:08,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:08,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:59:08,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:59:08,097 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 227 [2022-11-18 20:59:08,099 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) [2022-11-18 20:59:08,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:59:08,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 227 [2022-11-18 20:59:08,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:59:08,364 INFO L130 PetriNetUnfolder]: 73/535 cut-off events. [2022-11-18 20:59:08,364 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-18 20:59:08,369 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. [2022-11-18 20:59:08,374 INFO L137 encePairwiseOnDemand]: 219/227 looper letters, 32 selfloop transitions, 7 changer transitions 0/205 dead transitions. [2022-11-18 20:59:08,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 205 transitions, 520 flow [2022-11-18 20:59:08,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:59:08,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:59:08,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1320 transitions. [2022-11-18 20:59:08,379 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8307111390811831 [2022-11-18 20:59:08,379 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1320 transitions. [2022-11-18 20:59:08,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1320 transitions. [2022-11-18 20:59:08,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:59:08,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1320 transitions. [2022-11-18 20:59:08,383 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) [2022-11-18 20:59:08,387 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) [2022-11-18 20:59:08,388 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) [2022-11-18 20:59:08,389 INFO L175 Difference]: Start difference. First operand has 208 places, 198 transitions, 426 flow. Second operand 7 states and 1320 transitions. [2022-11-18 20:59:08,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 205 transitions, 520 flow [2022-11-18 20:59:08,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 205 transitions, 504 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-18 20:59:08,397 INFO L231 Difference]: Finished difference. Result has 207 places, 200 transitions, 443 flow [2022-11-18 20:59:08,398 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} [2022-11-18 20:59:08,400 INFO L288 CegarLoopForPetriNet]: 205 programPoint places, 2 predicate places. [2022-11-18 20:59:08,401 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 200 transitions, 443 flow [2022-11-18 20:59:08,402 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) [2022-11-18 20:59:08,402 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:59:08,403 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] [2022-11-18 20:59:08,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:08,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:08,614 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)] === [2022-11-18 20:59:08,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:08,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1915726308, now seen corresponding path program 1 times [2022-11-18 20:59:08,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:08,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716035617] [2022-11-18 20:59:08,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:08,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:08,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:59:08,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:08,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716035617] [2022-11-18 20:59:08,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716035617] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:59:08,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626780132] [2022-11-18 20:59:08,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:08,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:08,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:59:08,919 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:59:08,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:59:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:09,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:59:09,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:09,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:59:09,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:59:09,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:59:09,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626780132] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 20:59:09,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:59:09,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 19 [2022-11-18 20:59:09,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57400866] [2022-11-18 20:59:09,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:09,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:59:09,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:09,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:59:09,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:59:09,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 227 [2022-11-18 20:59:09,728 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) [2022-11-18 20:59:09,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:59:09,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 227 [2022-11-18 20:59:09,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:59:10,425 INFO L130 PetriNetUnfolder]: 765/2344 cut-off events. [2022-11-18 20:59:10,426 INFO L131 PetriNetUnfolder]: For 598/822 co-relation queries the response was YES. [2022-11-18 20:59:10,490 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. [2022-11-18 20:59:10,502 INFO L137 encePairwiseOnDemand]: 214/227 looper letters, 76 selfloop transitions, 18 changer transitions 0/253 dead transitions. [2022-11-18 20:59:10,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 253 transitions, 778 flow [2022-11-18 20:59:10,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:59:10,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:59:10,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1849 transitions. [2022-11-18 20:59:10,507 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8145374449339207 [2022-11-18 20:59:10,508 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1849 transitions. [2022-11-18 20:59:10,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1849 transitions. [2022-11-18 20:59:10,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:59:10,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1849 transitions. [2022-11-18 20:59:10,513 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) [2022-11-18 20:59:10,518 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) [2022-11-18 20:59:10,519 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) [2022-11-18 20:59:10,519 INFO L175 Difference]: Start difference. First operand has 207 places, 200 transitions, 443 flow. Second operand 10 states and 1849 transitions. [2022-11-18 20:59:10,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 253 transitions, 778 flow [2022-11-18 20:59:10,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 253 transitions, 766 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:59:10,525 INFO L231 Difference]: Finished difference. Result has 217 places, 212 transitions, 543 flow [2022-11-18 20:59:10,527 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} [2022-11-18 20:59:10,528 INFO L288 CegarLoopForPetriNet]: 205 programPoint places, 12 predicate places. [2022-11-18 20:59:10,528 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 212 transitions, 543 flow [2022-11-18 20:59:10,529 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) [2022-11-18 20:59:10,529 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:59:10,529 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] [2022-11-18 20:59:10,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:10,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:10,736 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)] === [2022-11-18 20:59:10,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:10,736 INFO L85 PathProgramCache]: Analyzing trace with hash 2034379310, now seen corresponding path program 2 times [2022-11-18 20:59:10,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:10,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085612782] [2022-11-18 20:59:10,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:10,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:11,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:59:11,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:11,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085612782] [2022-11-18 20:59:11,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085612782] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:59:11,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707757341] [2022-11-18 20:59:11,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:59:11,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:11,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:59:11,023 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:59:11,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:59:11,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:59:11,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:59:11,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:59:11,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:59:11,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:59:11,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707757341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:11,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:59:11,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-18 20:59:11,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766017541] [2022-11-18 20:59:11,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:11,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:59:11,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:11,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:59:11,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:59:11,569 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 227 [2022-11-18 20:59:11,570 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) [2022-11-18 20:59:11,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:59:11,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 227 [2022-11-18 20:59:11,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:59:12,064 INFO L130 PetriNetUnfolder]: 324/1503 cut-off events. [2022-11-18 20:59:12,064 INFO L131 PetriNetUnfolder]: For 672/774 co-relation queries the response was YES. [2022-11-18 20:59:12,074 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. [2022-11-18 20:59:12,083 INFO L137 encePairwiseOnDemand]: 218/227 looper letters, 43 selfloop transitions, 10 changer transitions 0/218 dead transitions. [2022-11-18 20:59:12,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 218 transitions, 672 flow [2022-11-18 20:59:12,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:59:12,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:59:12,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1429 transitions. [2022-11-18 20:59:12,087 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7868942731277533 [2022-11-18 20:59:12,088 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1429 transitions. [2022-11-18 20:59:12,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1429 transitions. [2022-11-18 20:59:12,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:59:12,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1429 transitions. [2022-11-18 20:59:12,092 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) [2022-11-18 20:59:12,096 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) [2022-11-18 20:59:12,097 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) [2022-11-18 20:59:12,097 INFO L175 Difference]: Start difference. First operand has 217 places, 212 transitions, 543 flow. Second operand 8 states and 1429 transitions. [2022-11-18 20:59:12,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 218 transitions, 672 flow [2022-11-18 20:59:12,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 218 transitions, 665 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:59:12,105 INFO L231 Difference]: Finished difference. Result has 221 places, 212 transitions, 563 flow [2022-11-18 20:59:12,106 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} [2022-11-18 20:59:12,107 INFO L288 CegarLoopForPetriNet]: 205 programPoint places, 16 predicate places. [2022-11-18 20:59:12,107 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 212 transitions, 563 flow [2022-11-18 20:59:12,108 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) [2022-11-18 20:59:12,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:59:12,108 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] [2022-11-18 20:59:12,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:12,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:12,314 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)] === [2022-11-18 20:59:12,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:12,314 INFO L85 PathProgramCache]: Analyzing trace with hash -784935295, now seen corresponding path program 1 times [2022-11-18 20:59:12,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:12,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036151290] [2022-11-18 20:59:12,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:12,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:15,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:15,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036151290] [2022-11-18 20:59:15,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036151290] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:59:15,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722226397] [2022-11-18 20:59:15,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:15,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:15,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:59:15,107 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:59:15,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933b5d5f-b399-4fdd-9e00-963beace38ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:59:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:15,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-18 20:59:15,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:16,550 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 [2022-11-18 20:59:17,772 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 [2022-11-18 20:59:17,980 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 [2022-11-18 20:59:18,144 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 [2022-11-18 20:59:19,821 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-18 20:59:19,821 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 [2022-11-18 20:59:20,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:20,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:59:22,326 WARN L837 $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 [2022-11-18 20:59:22,454 WARN L837 $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 [2022-11-18 20:59:22,667 WARN L837 $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 [2022-11-18 20:59:23,178 WARN L837 $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 [2022-11-18 20:59:25,720 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:59:25,722 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 [2022-11-18 20:59:25,737 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:59:25,737 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 [2022-11-18 20:59:25,760 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:59:25,761 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 [2022-11-18 20:59:25,780 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:59:25,781 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 [2022-11-18 20:59:25,805 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:59:25,806 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 [2022-11-18 20:59:27,544 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:59:27,544 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 [2022-11-18 20:59:27,563 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:59:27,564 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 [2022-11-18 20:59:27,590 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:59:27,591 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 [2022-11-18 20:59:27,625 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:59:27,625 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 [2022-11-18 20:59:27,657 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:59:27,657 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 [2022-11-18 20:59:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:29,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722226397] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:59:29,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:59:29,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 40, 36] total 104 [2022-11-18 20:59:29,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144035603] [2022-11-18 20:59:29,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:59:29,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-11-18 20:59:29,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:29,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-11-18 20:59:29,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=899, Invalid=8992, Unknown=25, NotChecked=796, Total=10712 [2022-11-18 20:59:29,700 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 227 [2022-11-18 20:59:29,712 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) [2022-11-18 20:59:29,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:59:29,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 227 [2022-11-18 20:59:29,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:26,208 INFO L130 PetriNetUnfolder]: 161572/300606 cut-off events. [2022-11-18 21:01:26,208 INFO L131 PetriNetUnfolder]: For 232298/232330 co-relation queries the response was YES. [2022-11-18 21:01:27,523 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. [2022-11-18 21:01:28,778 INFO L137 encePairwiseOnDemand]: 167/227 looper letters, 3351 selfloop transitions, 785 changer transitions 25/4254 dead transitions. [2022-11-18 21:01:28,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 4254 transitions, 22845 flow [2022-11-18 21:01:28,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2022-11-18 21:01:28,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2022-11-18 21:01:28,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 25640 transitions. [2022-11-18 21:01:28,846 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.511092949548508 [2022-11-18 21:01:28,846 INFO L72 ComplementDD]: Start complementDD. Operand 221 states and 25640 transitions. [2022-11-18 21:01:28,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 221 states and 25640 transitions. [2022-11-18 21:01:28,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:28,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 221 states and 25640 transitions. [2022-11-18 21:01:28,939 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) [2022-11-18 21:01:29,009 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) [2022-11-18 21:01:29,027 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) [2022-11-18 21:01:29,027 INFO L175 Difference]: Start difference. First operand has 221 places, 212 transitions, 563 flow. Second operand 221 states and 25640 transitions. [2022-11-18 21:01:29,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 4254 transitions, 22845 flow