./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ --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 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 --- 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-dbf71c6-m [2022-10-17 10:14:52,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:14:52,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:14:52,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:14:52,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:14:52,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:14:52,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:14:52,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:14:52,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:14:52,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:14:52,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:14:52,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:14:52,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:14:52,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:14:52,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:14:52,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:14:52,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:14:52,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:14:52,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:14:52,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:14:52,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:14:52,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:14:52,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:14:52,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:14:52,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:14:52,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:14:52,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:14:52,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:14:52,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:14:52,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:14:52,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:14:52,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:14:52,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:14:52,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:14:52,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:14:52,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:14:52,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:14:52,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:14:52,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:14:52,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:14:52,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:14:52,482 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:14:52,509 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:14:52,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:14:52,510 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:14:52,510 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:14:52,511 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:14:52,511 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:14:52,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:14:52,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:14:52,512 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:14:52,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:14:52,512 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:14:52,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:14:52,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:14:52,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:14:52,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:14:52,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:14:52,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:14:52,514 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:14:52,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:14:52,514 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:14:52,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:14:52,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:14:52,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:14:52,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:14:52,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:14:52,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:14:52,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:14:52,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:14:52,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:14:52,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:14:52,517 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:14:52,517 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:14:52,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:14:52,517 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_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 [2022-10-17 10:14:52,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:14:52,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:14:52,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:14:52,831 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:14:52,832 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:14:52,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2022-10-17 10:14:52,891 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/data/1ff67f1a5/480d3aee888640c4b26294737c725e63/FLAGa07fcd599 [2022-10-17 10:14:53,324 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:14:53,325 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2022-10-17 10:14:53,330 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/data/1ff67f1a5/480d3aee888640c4b26294737c725e63/FLAGa07fcd599 [2022-10-17 10:14:53,681 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/data/1ff67f1a5/480d3aee888640c4b26294737c725e63 [2022-10-17 10:14:53,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:14:53,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:14:53,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:14:53,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:14:53,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:14:53,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:14:53" (1/1) ... [2022-10-17 10:14:53,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e76a928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:53, skipping insertion in model container [2022-10-17 10:14:53,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:14:53" (1/1) ... [2022-10-17 10:14:53,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:14:53,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:14:54,003 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c[2553,2566] [2022-10-17 10:14:54,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:14:54,032 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:14:54,073 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c[2553,2566] [2022-10-17 10:14:54,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:14:54,106 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:14:54,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:54 WrapperNode [2022-10-17 10:14:54,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:14:54,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:14:54,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:14:54,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:14:54,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:54" (1/1) ... [2022-10-17 10:14:54,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:54" (1/1) ... [2022-10-17 10:14:54,160 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 101 [2022-10-17 10:14:54,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:14:54,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:14:54,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:14:54,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:14:54,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:54" (1/1) ... [2022-10-17 10:14:54,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:54" (1/1) ... [2022-10-17 10:14:54,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:54" (1/1) ... [2022-10-17 10:14:54,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:54" (1/1) ... [2022-10-17 10:14:54,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:54" (1/1) ... [2022-10-17 10:14:54,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:54" (1/1) ... [2022-10-17 10:14:54,191 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:54" (1/1) ... [2022-10-17 10:14:54,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:54" (1/1) ... [2022-10-17 10:14:54,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:14:54,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:14:54,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:14:54,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:14:54,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:54" (1/1) ... [2022-10-17 10:14:54,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:14:54,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:14:54,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:14:54,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:14:54,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:14:54,279 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-17 10:14:54,279 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-17 10:14:54,279 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-17 10:14:54,279 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-17 10:14:54,279 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-10-17 10:14:54,280 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-10-17 10:14:54,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:14:54,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:14:54,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:14:54,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:14:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:14:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:14:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:14:54,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:14:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:14:54,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:14:54,283 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:14:54,400 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:14:54,403 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:14:54,752 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:14:54,826 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:14:54,826 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-17 10:14:54,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:14:54 BoogieIcfgContainer [2022-10-17 10:14:54,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:14:54,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:14:54,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:14:54,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:14:54,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:14:53" (1/3) ... [2022-10-17 10:14:54,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b65a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:14:54, skipping insertion in model container [2022-10-17 10:14:54,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:54" (2/3) ... [2022-10-17 10:14:54,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b65a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:14:54, skipping insertion in model container [2022-10-17 10:14:54,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:14:54" (3/3) ... [2022-10-17 10:14:54,837 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array.wvr.c [2022-10-17 10:14:54,846 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:14:54,856 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:14:54,856 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:14:54,857 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:14:54,918 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-10-17 10:14:54,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 153 transitions, 330 flow [2022-10-17 10:14:55,033 INFO L130 PetriNetUnfolder]: 12/150 cut-off events. [2022-10-17 10:14:55,033 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-10-17 10:14:55,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 150 events. 12/150 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 93 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2022-10-17 10:14:55,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 153 transitions, 330 flow [2022-10-17 10:14:55,045 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 139 transitions, 296 flow [2022-10-17 10:14:55,055 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:14:55,063 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;@51a202dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:14:55,063 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 10:14:55,160 INFO L130 PetriNetUnfolder]: 12/138 cut-off events. [2022-10-17 10:14:55,160 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-10-17 10:14:55,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:55,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:55,162 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)] === [2022-10-17 10:14:55,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:55,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1383607487, now seen corresponding path program 1 times [2022-10-17 10:14:55,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:55,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194632624] [2022-10-17 10:14:55,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:55,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:55,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:55,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:55,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194632624] [2022-10-17 10:14:55,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194632624] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:55,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:55,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:14:55,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260248937] [2022-10-17 10:14:55,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:55,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:14:55,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:55,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:14:55,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:14:55,697 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 153 [2022-10-17 10:14:55,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 139 transitions, 296 flow. Second operand has 2 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:55,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:55,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 153 [2022-10-17 10:14:55,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:55,858 INFO L130 PetriNetUnfolder]: 41/264 cut-off events. [2022-10-17 10:14:55,858 INFO L131 PetriNetUnfolder]: For 49/50 co-relation queries the response was YES. [2022-10-17 10:14:55,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 264 events. 41/264 cut-off events. For 49/50 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 719 event pairs, 15 based on Foata normal form. 42/275 useless extension candidates. Maximal degree in co-relation 216. Up to 59 conditions per place. [2022-10-17 10:14:55,867 INFO L137 encePairwiseOnDemand]: 145/153 looper letters, 9 selfloop transitions, 0 changer transitions 4/131 dead transitions. [2022-10-17 10:14:55,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 131 transitions, 298 flow [2022-10-17 10:14:55,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:14:55,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 10:14:55,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 287 transitions. [2022-10-17 10:14:55,889 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9379084967320261 [2022-10-17 10:14:55,890 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 287 transitions. [2022-10-17 10:14:55,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 287 transitions. [2022-10-17 10:14:55,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:55,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 287 transitions. [2022-10-17 10:14:55,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 143.5) internal successors, (287), 2 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:55,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:55,912 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:55,914 INFO L175 Difference]: Start difference. First operand has 137 places, 139 transitions, 296 flow. Second operand 2 states and 287 transitions. [2022-10-17 10:14:55,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 131 transitions, 298 flow [2022-10-17 10:14:55,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 131 transitions, 286 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-10-17 10:14:55,925 INFO L231 Difference]: Finished difference. Result has 132 places, 127 transitions, 260 flow [2022-10-17 10:14:55,927 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=260, PETRI_PLACES=132, PETRI_TRANSITIONS=127} [2022-10-17 10:14:55,932 INFO L287 CegarLoopForPetriNet]: 137 programPoint places, -5 predicate places. [2022-10-17 10:14:55,933 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 127 transitions, 260 flow [2022-10-17 10:14:55,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:55,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:55,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:55,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:14:55,935 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)] === [2022-10-17 10:14:55,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:55,936 INFO L85 PathProgramCache]: Analyzing trace with hash 563593522, now seen corresponding path program 1 times [2022-10-17 10:14:55,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:55,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866816092] [2022-10-17 10:14:55,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:55,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:56,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:56,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866816092] [2022-10-17 10:14:56,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866816092] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:56,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:56,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:14:56,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902721398] [2022-10-17 10:14:56,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:56,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:14:56,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:56,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:14:56,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:14:56,730 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 153 [2022-10-17 10:14:56,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 127 transitions, 260 flow. Second operand has 8 states, 8 states have (on average 98.5) internal successors, (788), 8 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:56,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:56,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 153 [2022-10-17 10:14:56,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:57,034 INFO L130 PetriNetUnfolder]: 295/678 cut-off events. [2022-10-17 10:14:57,034 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-10-17 10:14:57,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 678 events. 295/678 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2964 event pairs, 167 based on Foata normal form. 1/510 useless extension candidates. Maximal degree in co-relation 1134. Up to 421 conditions per place. [2022-10-17 10:14:57,043 INFO L137 encePairwiseOnDemand]: 143/153 looper letters, 44 selfloop transitions, 6 changer transitions 4/135 dead transitions. [2022-10-17 10:14:57,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 135 transitions, 384 flow [2022-10-17 10:14:57,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:14:57,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-10-17 10:14:57,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 807 transitions. [2022-10-17 10:14:57,050 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6593137254901961 [2022-10-17 10:14:57,050 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 807 transitions. [2022-10-17 10:14:57,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 807 transitions. [2022-10-17 10:14:57,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:57,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 807 transitions. [2022-10-17 10:14:57,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 100.875) internal successors, (807), 8 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:57,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:57,062 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:57,062 INFO L175 Difference]: Start difference. First operand has 132 places, 127 transitions, 260 flow. Second operand 8 states and 807 transitions. [2022-10-17 10:14:57,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 135 transitions, 384 flow [2022-10-17 10:14:57,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 135 transitions, 384 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:14:57,070 INFO L231 Difference]: Finished difference. Result has 139 places, 128 transitions, 288 flow [2022-10-17 10:14:57,071 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=288, PETRI_PLACES=139, PETRI_TRANSITIONS=128} [2022-10-17 10:14:57,072 INFO L287 CegarLoopForPetriNet]: 137 programPoint places, 2 predicate places. [2022-10-17 10:14:57,072 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 288 flow [2022-10-17 10:14:57,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 98.5) internal successors, (788), 8 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:57,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:57,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:57,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:14:57,075 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)] === [2022-10-17 10:14:57,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:57,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1756520908, now seen corresponding path program 1 times [2022-10-17 10:14:57,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:57,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178785483] [2022-10-17 10:14:57,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:57,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:57,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:57,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:57,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178785483] [2022-10-17 10:14:57,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178785483] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:14:57,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080936020] [2022-10-17 10:14:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:57,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:14:57,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:14:57,400 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:14:57,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:14:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:57,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:14:57,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:14:57,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:57,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:14:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:58,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080936020] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-17 10:14:58,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:14:58,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-10-17 10:14:58,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301491761] [2022-10-17 10:14:58,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:58,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:14:58,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:58,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:14:58,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:14:58,021 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 153 [2022-10-17 10:14:58,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:58,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:58,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 153 [2022-10-17 10:14:58,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:58,247 INFO L130 PetriNetUnfolder]: 175/510 cut-off events. [2022-10-17 10:14:58,247 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-10-17 10:14:58,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 510 events. 175/510 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2108 event pairs, 45 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 826. Up to 137 conditions per place. [2022-10-17 10:14:58,255 INFO L137 encePairwiseOnDemand]: 145/153 looper letters, 33 selfloop transitions, 7 changer transitions 0/136 dead transitions. [2022-10-17 10:14:58,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 136 transitions, 386 flow [2022-10-17 10:14:58,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:14:58,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:14:58,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 831 transitions. [2022-10-17 10:14:58,259 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7759103641456583 [2022-10-17 10:14:58,260 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 831 transitions. [2022-10-17 10:14:58,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 831 transitions. [2022-10-17 10:14:58,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:58,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 831 transitions. [2022-10-17 10:14:58,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.71428571428571) internal successors, (831), 7 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:58,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:58,268 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:58,268 INFO L175 Difference]: Start difference. First operand has 139 places, 128 transitions, 288 flow. Second operand 7 states and 831 transitions. [2022-10-17 10:14:58,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 136 transitions, 386 flow [2022-10-17 10:14:58,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 136 transitions, 368 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-10-17 10:14:58,275 INFO L231 Difference]: Finished difference. Result has 139 places, 130 transitions, 303 flow [2022-10-17 10:14:58,276 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=303, PETRI_PLACES=139, PETRI_TRANSITIONS=130} [2022-10-17 10:14:58,278 INFO L287 CegarLoopForPetriNet]: 137 programPoint places, 2 predicate places. [2022-10-17 10:14:58,279 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 130 transitions, 303 flow [2022-10-17 10:14:58,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:58,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:58,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:58,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:14:58,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-10-17 10:14:58,504 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)] === [2022-10-17 10:14:58,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:58,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1066338293, now seen corresponding path program 1 times [2022-10-17 10:14:58,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:58,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686143847] [2022-10-17 10:14:58,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:58,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:58,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:14:58,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:58,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686143847] [2022-10-17 10:14:58,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686143847] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:14:58,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800564277] [2022-10-17 10:14:58,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:58,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:14:58,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:14:58,800 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:14:58,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:14:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:58,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:14:58,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:14:59,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:14:59,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:14:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:14:59,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800564277] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-17 10:14:59,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:14:59,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-10-17 10:14:59,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919674209] [2022-10-17 10:14:59,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:59,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:14:59,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:59,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:14:59,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-10-17 10:14:59,314 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 153 [2022-10-17 10:14:59,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 130 transitions, 303 flow. Second operand has 9 states, 9 states have (on average 109.33333333333333) internal successors, (984), 9 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:59,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:59,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 153 [2022-10-17 10:14:59,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:59,780 INFO L130 PetriNetUnfolder]: 599/1273 cut-off events. [2022-10-17 10:14:59,780 INFO L131 PetriNetUnfolder]: For 404/585 co-relation queries the response was YES. [2022-10-17 10:14:59,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2530 conditions, 1273 events. 599/1273 cut-off events. For 404/585 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6988 event pairs, 124 based on Foata normal form. 181/1304 useless extension candidates. Maximal degree in co-relation 2522. Up to 249 conditions per place. [2022-10-17 10:14:59,795 INFO L137 encePairwiseOnDemand]: 141/153 looper letters, 74 selfloop transitions, 19 changer transitions 0/182 dead transitions. [2022-10-17 10:14:59,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 182 transitions, 642 flow [2022-10-17 10:14:59,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:14:59,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-10-17 10:14:59,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2022-10-17 10:14:59,801 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.744503862150921 [2022-10-17 10:14:59,801 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2022-10-17 10:14:59,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2022-10-17 10:14:59,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:59,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2022-10-17 10:14:59,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:59,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 153.0) internal successors, (1836), 12 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:59,815 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 153.0) internal successors, (1836), 12 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:59,815 INFO L175 Difference]: Start difference. First operand has 139 places, 130 transitions, 303 flow. Second operand 11 states and 1253 transitions. [2022-10-17 10:14:59,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 182 transitions, 642 flow [2022-10-17 10:14:59,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 182 transitions, 629 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:14:59,825 INFO L231 Difference]: Finished difference. Result has 151 places, 142 transitions, 402 flow [2022-10-17 10:14:59,825 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=402, PETRI_PLACES=151, PETRI_TRANSITIONS=142} [2022-10-17 10:14:59,826 INFO L287 CegarLoopForPetriNet]: 137 programPoint places, 14 predicate places. [2022-10-17 10:14:59,826 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 142 transitions, 402 flow [2022-10-17 10:14:59,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 109.33333333333333) internal successors, (984), 9 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:14:59,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:59,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:59,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:00,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:00,028 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)] === [2022-10-17 10:15:00,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:00,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1615339177, now seen corresponding path program 2 times [2022-10-17 10:15:00,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:00,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54781067] [2022-10-17 10:15:00,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:00,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:00,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:15:00,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:00,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54781067] [2022-10-17 10:15:00,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54781067] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:15:00,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969203361] [2022-10-17 10:15:00,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:15:00,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:00,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:00,290 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:00,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:15:00,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-17 10:15:00,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:15:00,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:15:00,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:00,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:15:00,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:00,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969203361] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:00,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:15:00,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-10-17 10:15:00,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900872330] [2022-10-17 10:15:00,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:00,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:15:00,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:00,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:15:00,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:15:00,657 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 153 [2022-10-17 10:15:00,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 142 transitions, 402 flow. Second operand has 6 states, 6 states have (on average 106.5) internal successors, (639), 6 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:00,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:15:00,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 153 [2022-10-17 10:15:00,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:15:00,994 INFO L130 PetriNetUnfolder]: 413/833 cut-off events. [2022-10-17 10:15:00,994 INFO L131 PetriNetUnfolder]: For 772/877 co-relation queries the response was YES. [2022-10-17 10:15:00,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2163 conditions, 833 events. 413/833 cut-off events. For 772/877 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3702 event pairs, 111 based on Foata normal form. 131/942 useless extension candidates. Maximal degree in co-relation 2149. Up to 334 conditions per place. [2022-10-17 10:15:01,006 INFO L137 encePairwiseOnDemand]: 144/153 looper letters, 42 selfloop transitions, 11 changer transitions 0/144 dead transitions. [2022-10-17 10:15:01,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 144 transitions, 501 flow [2022-10-17 10:15:01,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:15:01,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-10-17 10:15:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 857 transitions. [2022-10-17 10:15:01,010 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7001633986928104 [2022-10-17 10:15:01,010 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 857 transitions. [2022-10-17 10:15:01,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 857 transitions. [2022-10-17 10:15:01,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:15:01,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 857 transitions. [2022-10-17 10:15:01,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 107.125) internal successors, (857), 8 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:01,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:01,018 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:01,018 INFO L175 Difference]: Start difference. First operand has 151 places, 142 transitions, 402 flow. Second operand 8 states and 857 transitions. [2022-10-17 10:15:01,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 144 transitions, 501 flow [2022-10-17 10:15:01,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 144 transitions, 488 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-10-17 10:15:01,027 INFO L231 Difference]: Finished difference. Result has 150 places, 136 transitions, 379 flow [2022-10-17 10:15:01,027 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=379, PETRI_PLACES=150, PETRI_TRANSITIONS=136} [2022-10-17 10:15:01,028 INFO L287 CegarLoopForPetriNet]: 137 programPoint places, 13 predicate places. [2022-10-17 10:15:01,029 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 136 transitions, 379 flow [2022-10-17 10:15:01,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 106.5) internal successors, (639), 6 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:01,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:15:01,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:01,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:01,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:01,244 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)] === [2022-10-17 10:15:01,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:01,245 INFO L85 PathProgramCache]: Analyzing trace with hash 166796212, now seen corresponding path program 1 times [2022-10-17 10:15:01,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:01,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367603592] [2022-10-17 10:15:01,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:01,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:02,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:02,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367603592] [2022-10-17 10:15:02,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367603592] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:15:02,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235205180] [2022-10-17 10:15:02,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:02,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:02,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:02,960 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:02,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:15:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:03,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 37 conjunts are in the unsatisfiable core [2022-10-17 10:15:03,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:04,810 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:15:04,814 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:15:04,815 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 36 [2022-10-17 10:15:04,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:04,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:15:05,351 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:15:05,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 51 [2022-10-17 10:15:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:06,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235205180] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:15:06,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:15:06,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24, 18] total 57 [2022-10-17 10:15:06,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469705813] [2022-10-17 10:15:06,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:15:06,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-10-17 10:15:06,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:06,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-10-17 10:15:06,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=2720, Unknown=0, NotChecked=0, Total=3192 [2022-10-17 10:15:06,233 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 153 [2022-10-17 10:15:06,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 136 transitions, 379 flow. Second operand has 57 states, 57 states have (on average 71.28070175438596) internal successors, (4063), 57 states have internal predecessors, (4063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:06,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:15:06,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 153 [2022-10-17 10:15:06,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:15:11,185 INFO L130 PetriNetUnfolder]: 4198/6888 cut-off events. [2022-10-17 10:15:11,186 INFO L131 PetriNetUnfolder]: For 5982/5997 co-relation queries the response was YES. [2022-10-17 10:15:11,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17926 conditions, 6888 events. 4198/6888 cut-off events. For 5982/5997 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 44845 event pairs, 387 based on Foata normal form. 2/6728 useless extension candidates. Maximal degree in co-relation 17914. Up to 2296 conditions per place. [2022-10-17 10:15:11,271 INFO L137 encePairwiseOnDemand]: 113/153 looper letters, 266 selfloop transitions, 104 changer transitions 10/436 dead transitions. [2022-10-17 10:15:11,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 436 transitions, 2224 flow [2022-10-17 10:15:11,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-10-17 10:15:11,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-10-17 10:15:11,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 3548 transitions. [2022-10-17 10:15:11,285 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.49339452092893893 [2022-10-17 10:15:11,286 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 3548 transitions. [2022-10-17 10:15:11,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 3548 transitions. [2022-10-17 10:15:11,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:15:11,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 3548 transitions. [2022-10-17 10:15:11,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 75.48936170212765) internal successors, (3548), 47 states have internal predecessors, (3548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:11,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 153.0) internal successors, (7344), 48 states have internal predecessors, (7344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:11,318 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 153.0) internal successors, (7344), 48 states have internal predecessors, (7344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:11,318 INFO L175 Difference]: Start difference. First operand has 150 places, 136 transitions, 379 flow. Second operand 47 states and 3548 transitions. [2022-10-17 10:15:11,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 436 transitions, 2224 flow [2022-10-17 10:15:11,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 436 transitions, 2174 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-10-17 10:15:11,443 INFO L231 Difference]: Finished difference. Result has 220 places, 229 transitions, 1139 flow [2022-10-17 10:15:11,446 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=1139, PETRI_PLACES=220, PETRI_TRANSITIONS=229} [2022-10-17 10:15:11,446 INFO L287 CegarLoopForPetriNet]: 137 programPoint places, 83 predicate places. [2022-10-17 10:15:11,448 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 229 transitions, 1139 flow [2022-10-17 10:15:11,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 71.28070175438596) internal successors, (4063), 57 states have internal predecessors, (4063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:11,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:15:11,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:11,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:11,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-17 10:15:11,676 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:15:11,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:11,677 INFO L85 PathProgramCache]: Analyzing trace with hash -684360510, now seen corresponding path program 2 times [2022-10-17 10:15:11,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:11,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229076566] [2022-10-17 10:15:11,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:11,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:13,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:13,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:13,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229076566] [2022-10-17 10:15:13,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229076566] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:15:13,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873284679] [2022-10-17 10:15:13,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:15:13,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:13,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:13,298 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:13,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e7d14d-8caf-4131-b2d4-45650f91ea1d/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:15:13,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:15:13,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:15:13,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 29 conjunts are in the unsatisfiable core [2022-10-17 10:15:13,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:14,130 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:15:14,130 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 43 [2022-10-17 10:15:14,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:15:14,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:15:15,003 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:15:15,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 51 [2022-10-17 10:15:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:15:15,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873284679] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:15:15,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:15:15,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 16, 15] total 43 [2022-10-17 10:15:15,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203895105] [2022-10-17 10:15:15,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:15:15,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-10-17 10:15:15,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:15,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-10-17 10:15:15,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=1535, Unknown=0, NotChecked=0, Total=1806 [2022-10-17 10:15:15,584 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 153 [2022-10-17 10:15:15,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 229 transitions, 1139 flow. Second operand has 43 states, 43 states have (on average 69.25581395348837) internal successors, (2978), 43 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:15,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:15:15,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 153 [2022-10-17 10:15:15,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand