./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/bench-exp2x3.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_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/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_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/bench-exp2x3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/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_1d563173-bbc5-4e93-b846-96f3d362e312/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 ebb6bba6491ab996b2a2d1f88baf86906cd5ba5ce7e0ad4dc20017ded9089a97 --- 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 10:42:26,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:42:26,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:42:26,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:42:26,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:42:26,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:42:26,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:42:26,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:42:26,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:42:27,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:42:27,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:42:27,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:42:27,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:42:27,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:42:27,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:42:27,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:42:27,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:42:27,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:42:27,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:42:27,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:42:27,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:42:27,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:42:27,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:42:27,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:42:27,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:42:27,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:42:27,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:42:27,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:42:27,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:42:27,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:42:27,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:42:27,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:42:27,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:42:27,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:42:27,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:42:27,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:42:27,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:42:27,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:42:27,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:42:27,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:42:27,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:42:27,062 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:42:27,109 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:42:27,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:42:27,110 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:42:27,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:42:27,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:42:27,112 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:42:27,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:42:27,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:42:27,113 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:42:27,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:42:27,115 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:42:27,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:42:27,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:42:27,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:42:27,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:42:27,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:42:27,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:42:27,116 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:42:27,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:42:27,117 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:42:27,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:42:27,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:42:27,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:42:27,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:42:27,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:42:27,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:42:27,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:42:27,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:42:27,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:42:27,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:42:27,121 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:42:27,121 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:42:27,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:42:27,122 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_1d563173-bbc5-4e93-b846-96f3d362e312/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebb6bba6491ab996b2a2d1f88baf86906cd5ba5ce7e0ad4dc20017ded9089a97 [2022-10-17 10:42:27,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:42:27,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:42:27,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:42:27,470 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:42:27,471 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:42:27,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/weaver/bench-exp2x3.wvr.c [2022-10-17 10:42:27,532 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/data/288bcf3dd/e6831d15129f486098414e7569410573/FLAG254f33b71 [2022-10-17 10:42:28,005 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:42:28,010 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/sv-benchmarks/c/weaver/bench-exp2x3.wvr.c [2022-10-17 10:42:28,020 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/data/288bcf3dd/e6831d15129f486098414e7569410573/FLAG254f33b71 [2022-10-17 10:42:28,360 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/data/288bcf3dd/e6831d15129f486098414e7569410573 [2022-10-17 10:42:28,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:42:28,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:42:28,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:42:28,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:42:28,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:42:28,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:42:28" (1/1) ... [2022-10-17 10:42:28,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fdf5f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:28, skipping insertion in model container [2022-10-17 10:42:28,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:42:28" (1/1) ... [2022-10-17 10:42:28,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:42:28,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:42:28,620 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_1d563173-bbc5-4e93-b846-96f3d362e312/sv-benchmarks/c/weaver/bench-exp2x3.wvr.c[2237,2250] [2022-10-17 10:42:28,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:42:28,632 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:42:28,655 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_1d563173-bbc5-4e93-b846-96f3d362e312/sv-benchmarks/c/weaver/bench-exp2x3.wvr.c[2237,2250] [2022-10-17 10:42:28,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:42:28,670 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:42:28,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:28 WrapperNode [2022-10-17 10:42:28,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:42:28,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:42:28,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:42:28,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:42:28,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:28" (1/1) ... [2022-10-17 10:42:28,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:28" (1/1) ... [2022-10-17 10:42:28,709 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-10-17 10:42:28,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:42:28,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:42:28,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:42:28,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:42:28,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:28" (1/1) ... [2022-10-17 10:42:28,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:28" (1/1) ... [2022-10-17 10:42:28,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:28" (1/1) ... [2022-10-17 10:42:28,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:28" (1/1) ... [2022-10-17 10:42:28,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:28" (1/1) ... [2022-10-17 10:42:28,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:28" (1/1) ... [2022-10-17 10:42:28,735 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:28" (1/1) ... [2022-10-17 10:42:28,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:28" (1/1) ... [2022-10-17 10:42:28,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:42:28,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:42:28,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:42:28,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:42:28,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:28" (1/1) ... [2022-10-17 10:42:28,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:42:28,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:42:28,771 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:42:28,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:42:28,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:42:28,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-17 10:42:28,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-17 10:42:28,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-17 10:42:28,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-17 10:42:28,810 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-10-17 10:42:28,810 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-10-17 10:42:28,810 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-10-17 10:42:28,810 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-10-17 10:42:28,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:42:28,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:42:28,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:42:28,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:42:28,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:42:28,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:42:28,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:42:28,813 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 10:42:28,907 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:42:28,910 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:42:29,194 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:42:29,203 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:42:29,204 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-17 10:42:29,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:42:29 BoogieIcfgContainer [2022-10-17 10:42:29,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:42:29,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:42:29,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:42:29,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:42:29,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:42:28" (1/3) ... [2022-10-17 10:42:29,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@236a6c4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:42:29, skipping insertion in model container [2022-10-17 10:42:29,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:28" (2/3) ... [2022-10-17 10:42:29,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@236a6c4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:42:29, skipping insertion in model container [2022-10-17 10:42:29,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:42:29" (3/3) ... [2022-10-17 10:42:29,215 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x3.wvr.c [2022-10-17 10:42:29,223 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:42:29,234 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:42:29,234 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:42:29,234 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:42:29,375 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-10-17 10:42:29,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 125 transitions, 282 flow [2022-10-17 10:42:29,515 INFO L130 PetriNetUnfolder]: 10/121 cut-off events. [2022-10-17 10:42:29,520 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-10-17 10:42:29,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 121 events. 10/121 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2022-10-17 10:42:29,528 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 125 transitions, 282 flow [2022-10-17 10:42:29,538 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 108 transitions, 240 flow [2022-10-17 10:42:29,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:42:29,563 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;@12ee566d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:42:29,563 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-10-17 10:42:29,639 INFO L130 PetriNetUnfolder]: 10/107 cut-off events. [2022-10-17 10:42:29,639 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-10-17 10:42:29,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:42:29,641 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] [2022-10-17 10:42:29,642 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 2 more)] === [2022-10-17 10:42:29,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:42:29,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1965074432, now seen corresponding path program 1 times [2022-10-17 10:42:29,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:42:29,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596078815] [2022-10-17 10:42:29,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:42:29,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:42:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:42:30,113 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 10:42:30,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:42:30,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596078815] [2022-10-17 10:42:30,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596078815] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:42:30,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:42:30,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:42:30,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200871038] [2022-10-17 10:42:30,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:42:30,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:42:30,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:42:30,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:42:30,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:42:30,205 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 125 [2022-10-17 10:42:30,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 108 transitions, 240 flow. Second operand has 2 states, 2 states have (on average 115.5) internal successors, (231), 2 states have internal predecessors, (231), 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 10:42:30,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:42:30,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 125 [2022-10-17 10:42:30,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:42:30,307 INFO L130 PetriNetUnfolder]: 4/102 cut-off events. [2022-10-17 10:42:30,311 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-10-17 10:42:30,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 102 events. 4/102 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 18/114 useless extension candidates. Maximal degree in co-relation 83. Up to 9 conditions per place. [2022-10-17 10:42:30,314 INFO L137 encePairwiseOnDemand]: 119/125 looper letters, 8 selfloop transitions, 0 changer transitions 2/102 dead transitions. [2022-10-17 10:42:30,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 102 transitions, 244 flow [2022-10-17 10:42:30,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:42:30,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 10:42:30,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 234 transitions. [2022-10-17 10:42:30,331 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.936 [2022-10-17 10:42:30,332 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 234 transitions. [2022-10-17 10:42:30,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 234 transitions. [2022-10-17 10:42:30,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:42:30,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 234 transitions. [2022-10-17 10:42:30,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 117.0) internal successors, (234), 2 states have internal predecessors, (234), 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 10:42:30,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:30,356 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:30,359 INFO L175 Difference]: Start difference. First operand has 111 places, 108 transitions, 240 flow. Second operand 2 states and 234 transitions. [2022-10-17 10:42:30,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 102 transitions, 244 flow [2022-10-17 10:42:30,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 102 transitions, 228 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-10-17 10:42:30,374 INFO L231 Difference]: Finished difference. Result has 104 places, 100 transitions, 208 flow [2022-10-17 10:42:30,376 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=208, PETRI_PLACES=104, PETRI_TRANSITIONS=100} [2022-10-17 10:42:30,380 INFO L287 CegarLoopForPetriNet]: 111 programPoint places, -7 predicate places. [2022-10-17 10:42:30,380 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 100 transitions, 208 flow [2022-10-17 10:42:30,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 115.5) internal successors, (231), 2 states have internal predecessors, (231), 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 10:42:30,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:42:30,382 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] [2022-10-17 10:42:30,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:42:30,383 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 2 more)] === [2022-10-17 10:42:30,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:42:30,384 INFO L85 PathProgramCache]: Analyzing trace with hash 560355165, now seen corresponding path program 1 times [2022-10-17 10:42:30,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:42:30,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837530107] [2022-10-17 10:42:30,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:42:30,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:42:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:42:31,636 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 10:42:31,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:42:31,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837530107] [2022-10-17 10:42:31,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837530107] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:42:31,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:42:31,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:42:31,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650965321] [2022-10-17 10:42:31,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:42:31,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:42:31,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:42:31,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:42:31,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:42:31,650 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 125 [2022-10-17 10:42:31,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 100 transitions, 208 flow. Second operand has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 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 10:42:31,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:42:31,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 125 [2022-10-17 10:42:31,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:42:32,260 INFO L130 PetriNetUnfolder]: 895/1602 cut-off events. [2022-10-17 10:42:32,261 INFO L131 PetriNetUnfolder]: For 80/135 co-relation queries the response was YES. [2022-10-17 10:42:32,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2918 conditions, 1602 events. 895/1602 cut-off events. For 80/135 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7755 event pairs, 272 based on Foata normal form. 2/1156 useless extension candidates. Maximal degree in co-relation 2915. Up to 796 conditions per place. [2022-10-17 10:42:32,283 INFO L137 encePairwiseOnDemand]: 115/125 looper letters, 47 selfloop transitions, 7 changer transitions 4/122 dead transitions. [2022-10-17 10:42:32,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 122 transitions, 375 flow [2022-10-17 10:42:32,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:42:32,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:42:32,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 619 transitions. [2022-10-17 10:42:32,292 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7074285714285714 [2022-10-17 10:42:32,292 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 619 transitions. [2022-10-17 10:42:32,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 619 transitions. [2022-10-17 10:42:32,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:42:32,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 619 transitions. [2022-10-17 10:42:32,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.42857142857143) internal successors, (619), 7 states have internal predecessors, (619), 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 10:42:32,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 125.0) internal successors, (1000), 8 states have internal predecessors, (1000), 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 10:42:32,303 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 125.0) internal successors, (1000), 8 states have internal predecessors, (1000), 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 10:42:32,303 INFO L175 Difference]: Start difference. First operand has 104 places, 100 transitions, 208 flow. Second operand 7 states and 619 transitions. [2022-10-17 10:42:32,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 122 transitions, 375 flow [2022-10-17 10:42:32,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 122 transitions, 375 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:42:32,309 INFO L231 Difference]: Finished difference. Result has 111 places, 104 transitions, 249 flow [2022-10-17 10:42:32,310 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=249, PETRI_PLACES=111, PETRI_TRANSITIONS=104} [2022-10-17 10:42:32,311 INFO L287 CegarLoopForPetriNet]: 111 programPoint places, 0 predicate places. [2022-10-17 10:42:32,311 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 104 transitions, 249 flow [2022-10-17 10:42:32,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 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 10:42:32,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:42:32,312 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] [2022-10-17 10:42:32,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:42:32,313 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 2 more)] === [2022-10-17 10:42:32,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:42:32,315 INFO L85 PathProgramCache]: Analyzing trace with hash -411671977, now seen corresponding path program 1 times [2022-10-17 10:42:32,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:42:32,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725926576] [2022-10-17 10:42:32,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:42:32,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:42:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:42:32,673 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 10:42:32,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:42:32,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725926576] [2022-10-17 10:42:32,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725926576] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:42:32,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:42:32,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:42:32,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070785723] [2022-10-17 10:42:32,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:42:32,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:42:32,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:42:32,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:42:32,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:42:32,678 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 125 [2022-10-17 10:42:32,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 104 transitions, 249 flow. Second operand has 6 states, 6 states have (on average 88.66666666666667) internal successors, (532), 6 states have internal predecessors, (532), 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 10:42:32,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:42:32,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 125 [2022-10-17 10:42:32,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:42:33,348 INFO L130 PetriNetUnfolder]: 1373/2607 cut-off events. [2022-10-17 10:42:33,348 INFO L131 PetriNetUnfolder]: For 392/412 co-relation queries the response was YES. [2022-10-17 10:42:33,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5134 conditions, 2607 events. 1373/2607 cut-off events. For 392/412 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 15698 event pairs, 505 based on Foata normal form. 0/1875 useless extension candidates. Maximal degree in co-relation 5127. Up to 542 conditions per place. [2022-10-17 10:42:33,388 INFO L137 encePairwiseOnDemand]: 114/125 looper letters, 70 selfloop transitions, 14 changer transitions 0/154 dead transitions. [2022-10-17 10:42:33,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 154 transitions, 552 flow [2022-10-17 10:42:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:42:33,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:42:33,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 672 transitions. [2022-10-17 10:42:33,392 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.768 [2022-10-17 10:42:33,392 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 672 transitions. [2022-10-17 10:42:33,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 672 transitions. [2022-10-17 10:42:33,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:42:33,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 672 transitions. [2022-10-17 10:42:33,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.0) internal successors, (672), 7 states have internal predecessors, (672), 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 10:42:33,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 125.0) internal successors, (1000), 8 states have internal predecessors, (1000), 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 10:42:33,400 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 125.0) internal successors, (1000), 8 states have internal predecessors, (1000), 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 10:42:33,400 INFO L175 Difference]: Start difference. First operand has 111 places, 104 transitions, 249 flow. Second operand 7 states and 672 transitions. [2022-10-17 10:42:33,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 154 transitions, 552 flow [2022-10-17 10:42:33,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 154 transitions, 531 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-10-17 10:42:33,407 INFO L231 Difference]: Finished difference. Result has 114 places, 110 transitions, 318 flow [2022-10-17 10:42:33,408 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=114, PETRI_TRANSITIONS=110} [2022-10-17 10:42:33,409 INFO L287 CegarLoopForPetriNet]: 111 programPoint places, 3 predicate places. [2022-10-17 10:42:33,409 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 110 transitions, 318 flow [2022-10-17 10:42:33,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.66666666666667) internal successors, (532), 6 states have internal predecessors, (532), 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 10:42:33,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:42:33,410 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] [2022-10-17 10:42:33,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:42:33,411 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 2 more)] === [2022-10-17 10:42:33,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:42:33,412 INFO L85 PathProgramCache]: Analyzing trace with hash -485358699, now seen corresponding path program 2 times [2022-10-17 10:42:33,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:42:33,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605282844] [2022-10-17 10:42:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:42:33,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:42:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:42:33,890 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 10:42:33,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:42:33,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605282844] [2022-10-17 10:42:33,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605282844] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:42:33,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:42:33,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:42:33,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715496648] [2022-10-17 10:42:33,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:42:33,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:42:33,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:42:33,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:42:33,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:42:33,896 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 125 [2022-10-17 10:42:33,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 110 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 83.33333333333333) internal successors, (500), 6 states have internal predecessors, (500), 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 10:42:33,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:42:33,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 125 [2022-10-17 10:42:33,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:42:34,640 INFO L130 PetriNetUnfolder]: 1489/2668 cut-off events. [2022-10-17 10:42:34,641 INFO L131 PetriNetUnfolder]: For 2290/2290 co-relation queries the response was YES. [2022-10-17 10:42:34,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6864 conditions, 2668 events. 1489/2668 cut-off events. For 2290/2290 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 14943 event pairs, 322 based on Foata normal form. 35/2191 useless extension candidates. Maximal degree in co-relation 6856. Up to 1708 conditions per place. [2022-10-17 10:42:34,675 INFO L137 encePairwiseOnDemand]: 114/125 looper letters, 64 selfloop transitions, 12 changer transitions 1/139 dead transitions. [2022-10-17 10:42:34,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 139 transitions, 576 flow [2022-10-17 10:42:34,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:42:34,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:42:34,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 539 transitions. [2022-10-17 10:42:34,679 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7186666666666667 [2022-10-17 10:42:34,679 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 539 transitions. [2022-10-17 10:42:34,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 539 transitions. [2022-10-17 10:42:34,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:42:34,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 539 transitions. [2022-10-17 10:42:34,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 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 10:42:34,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 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 10:42:34,686 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 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 10:42:34,686 INFO L175 Difference]: Start difference. First operand has 114 places, 110 transitions, 318 flow. Second operand 6 states and 539 transitions. [2022-10-17 10:42:34,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 139 transitions, 576 flow [2022-10-17 10:42:34,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 139 transitions, 572 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:42:34,697 INFO L231 Difference]: Finished difference. Result has 119 places, 115 transitions, 384 flow [2022-10-17 10:42:34,697 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=384, PETRI_PLACES=119, PETRI_TRANSITIONS=115} [2022-10-17 10:42:34,698 INFO L287 CegarLoopForPetriNet]: 111 programPoint places, 8 predicate places. [2022-10-17 10:42:34,699 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 115 transitions, 384 flow [2022-10-17 10:42:34,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.33333333333333) internal successors, (500), 6 states have internal predecessors, (500), 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 10:42:34,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:42:34,700 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] [2022-10-17 10:42:34,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:42:34,701 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 2 more)] === [2022-10-17 10:42:34,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:42:34,701 INFO L85 PathProgramCache]: Analyzing trace with hash 451203819, now seen corresponding path program 1 times [2022-10-17 10:42:34,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:42:34,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564985737] [2022-10-17 10:42:34,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:42:34,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:42:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:42:35,248 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 10:42:35,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:42:35,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564985737] [2022-10-17 10:42:35,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564985737] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:42:35,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:42:35,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:42:35,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14119124] [2022-10-17 10:42:35,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:42:35,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:42:35,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:42:35,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:42:35,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:42:35,252 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 125 [2022-10-17 10:42:35,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 115 transitions, 384 flow. Second operand has 6 states, 6 states have (on average 83.33333333333333) internal successors, (500), 6 states have internal predecessors, (500), 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 10:42:35,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:42:35,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 125 [2022-10-17 10:42:35,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:42:36,004 INFO L130 PetriNetUnfolder]: 1464/2714 cut-off events. [2022-10-17 10:42:36,004 INFO L131 PetriNetUnfolder]: For 3932/4001 co-relation queries the response was YES. [2022-10-17 10:42:36,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7543 conditions, 2714 events. 1464/2714 cut-off events. For 3932/4001 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 15883 event pairs, 516 based on Foata normal form. 1/2223 useless extension candidates. Maximal degree in co-relation 7532. Up to 1708 conditions per place. [2022-10-17 10:42:36,041 INFO L137 encePairwiseOnDemand]: 114/125 looper letters, 70 selfloop transitions, 19 changer transitions 1/152 dead transitions. [2022-10-17 10:42:36,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 152 transitions, 765 flow [2022-10-17 10:42:36,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:42:36,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:42:36,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 540 transitions. [2022-10-17 10:42:36,045 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.72 [2022-10-17 10:42:36,046 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 540 transitions. [2022-10-17 10:42:36,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 540 transitions. [2022-10-17 10:42:36,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:42:36,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 540 transitions. [2022-10-17 10:42:36,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 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 10:42:36,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 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 10:42:36,051 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 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 10:42:36,051 INFO L175 Difference]: Start difference. First operand has 119 places, 115 transitions, 384 flow. Second operand 6 states and 540 transitions. [2022-10-17 10:42:36,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 152 transitions, 765 flow [2022-10-17 10:42:36,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 152 transitions, 723 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-10-17 10:42:36,065 INFO L231 Difference]: Finished difference. Result has 122 places, 124 transitions, 476 flow [2022-10-17 10:42:36,065 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=476, PETRI_PLACES=122, PETRI_TRANSITIONS=124} [2022-10-17 10:42:36,068 INFO L287 CegarLoopForPetriNet]: 111 programPoint places, 11 predicate places. [2022-10-17 10:42:36,069 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 124 transitions, 476 flow [2022-10-17 10:42:36,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.33333333333333) internal successors, (500), 6 states have internal predecessors, (500), 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 10:42:36,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:42:36,070 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] [2022-10-17 10:42:36,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:42:36,070 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 2 more)] === [2022-10-17 10:42:36,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:42:36,071 INFO L85 PathProgramCache]: Analyzing trace with hash 23459537, now seen corresponding path program 1 times [2022-10-17 10:42:36,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:42:36,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014505772] [2022-10-17 10:42:36,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:42:36,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:42:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:42:36,517 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 10:42:36,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:42:36,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014505772] [2022-10-17 10:42:36,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014505772] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:42:36,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:42:36,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:42:36,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513426590] [2022-10-17 10:42:36,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:42:36,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:42:36,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:42:36,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:42:36,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:42:36,521 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 125 [2022-10-17 10:42:36,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 124 transitions, 476 flow. Second operand has 6 states, 6 states have (on average 83.33333333333333) internal successors, (500), 6 states have internal predecessors, (500), 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 10:42:36,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:42:36,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 125 [2022-10-17 10:42:36,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:42:37,314 INFO L130 PetriNetUnfolder]: 1403/2689 cut-off events. [2022-10-17 10:42:37,314 INFO L131 PetriNetUnfolder]: For 3813/3891 co-relation queries the response was YES. [2022-10-17 10:42:37,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7975 conditions, 2689 events. 1403/2689 cut-off events. For 3813/3891 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 16303 event pairs, 419 based on Foata normal form. 13/2537 useless extension candidates. Maximal degree in co-relation 7962. Up to 1673 conditions per place. [2022-10-17 10:42:37,401 INFO L137 encePairwiseOnDemand]: 115/125 looper letters, 68 selfloop transitions, 21 changer transitions 1/152 dead transitions. [2022-10-17 10:42:37,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 152 transitions, 778 flow [2022-10-17 10:42:37,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:42:37,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:42:37,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 537 transitions. [2022-10-17 10:42:37,405 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.716 [2022-10-17 10:42:37,406 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 537 transitions. [2022-10-17 10:42:37,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 537 transitions. [2022-10-17 10:42:37,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:42:37,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 537 transitions. [2022-10-17 10:42:37,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.5) internal successors, (537), 6 states have internal predecessors, (537), 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 10:42:37,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 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 10:42:37,413 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 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 10:42:37,413 INFO L175 Difference]: Start difference. First operand has 122 places, 124 transitions, 476 flow. Second operand 6 states and 537 transitions. [2022-10-17 10:42:37,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 152 transitions, 778 flow [2022-10-17 10:42:37,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 152 transitions, 757 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-10-17 10:42:37,425 INFO L231 Difference]: Finished difference. Result has 126 places, 128 transitions, 548 flow [2022-10-17 10:42:37,426 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=548, PETRI_PLACES=126, PETRI_TRANSITIONS=128} [2022-10-17 10:42:37,429 INFO L287 CegarLoopForPetriNet]: 111 programPoint places, 15 predicate places. [2022-10-17 10:42:37,429 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 128 transitions, 548 flow [2022-10-17 10:42:37,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.33333333333333) internal successors, (500), 6 states have internal predecessors, (500), 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 10:42:37,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:42:37,430 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] [2022-10-17 10:42:37,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:42:37,431 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 2 more)] === [2022-10-17 10:42:37,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:42:37,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1649521273, now seen corresponding path program 1 times [2022-10-17 10:42:37,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:42:37,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538849606] [2022-10-17 10:42:37,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:42:37,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:42:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:42:37,945 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 10:42:37,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:42:37,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538849606] [2022-10-17 10:42:37,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538849606] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:42:37,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075099467] [2022-10-17 10:42:37,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:42:37,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:42:37,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:42:37,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:42:37,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:42:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:42:38,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:42:38,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:42:38,607 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 10:42:38,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:42:38,989 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 10:42:38,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075099467] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:42:38,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:42:38,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-10-17 10:42:38,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127202362] [2022-10-17 10:42:38,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:42:38,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-17 10:42:38,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:42:38,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-17 10:42:38,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:42:38,996 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 125 [2022-10-17 10:42:38,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 128 transitions, 548 flow. Second operand has 14 states, 14 states have (on average 82.5) internal successors, (1155), 14 states have internal predecessors, (1155), 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 10:42:38,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:42:38,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 125 [2022-10-17 10:42:38,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:42:40,658 INFO L130 PetriNetUnfolder]: 2685/4833 cut-off events. [2022-10-17 10:42:40,659 INFO L131 PetriNetUnfolder]: For 7703/7809 co-relation queries the response was YES. [2022-10-17 10:42:40,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14636 conditions, 4833 events. 2685/4833 cut-off events. For 7703/7809 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 31848 event pairs, 362 based on Foata normal form. 170/4830 useless extension candidates. Maximal degree in co-relation 14621. Up to 1149 conditions per place. [2022-10-17 10:42:40,715 INFO L137 encePairwiseOnDemand]: 110/125 looper letters, 171 selfloop transitions, 32 changer transitions 2/267 dead transitions. [2022-10-17 10:42:40,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 267 transitions, 1690 flow [2022-10-17 10:42:40,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:42:40,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-10-17 10:42:40,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1251 transitions. [2022-10-17 10:42:40,721 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7148571428571429 [2022-10-17 10:42:40,721 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1251 transitions. [2022-10-17 10:42:40,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1251 transitions. [2022-10-17 10:42:40,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:42:40,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1251 transitions. [2022-10-17 10:42:40,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 89.35714285714286) internal successors, (1251), 14 states have internal predecessors, (1251), 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 10:42:40,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 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 10:42:40,732 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 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 10:42:40,732 INFO L175 Difference]: Start difference. First operand has 126 places, 128 transitions, 548 flow. Second operand 14 states and 1251 transitions. [2022-10-17 10:42:40,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 267 transitions, 1690 flow [2022-10-17 10:42:40,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 267 transitions, 1653 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-10-17 10:42:40,751 INFO L231 Difference]: Finished difference. Result has 145 places, 138 transitions, 699 flow [2022-10-17 10:42:40,752 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=699, PETRI_PLACES=145, PETRI_TRANSITIONS=138} [2022-10-17 10:42:40,752 INFO L287 CegarLoopForPetriNet]: 111 programPoint places, 34 predicate places. [2022-10-17 10:42:40,753 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 138 transitions, 699 flow [2022-10-17 10:42:40,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 82.5) internal successors, (1155), 14 states have internal predecessors, (1155), 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 10:42:40,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:42:40,754 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] [2022-10-17 10:42:40,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:42:40,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:42:40,982 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:42:40,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:42:40,982 INFO L85 PathProgramCache]: Analyzing trace with hash -108509155, now seen corresponding path program 2 times [2022-10-17 10:42:40,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:42:40,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80378547] [2022-10-17 10:42:40,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:42:40,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:42:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:42:41,307 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 10:42:41,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:42:41,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80378547] [2022-10-17 10:42:41,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80378547] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:42:41,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:42:41,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:42:41,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109243004] [2022-10-17 10:42:41,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:42:41,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:42:41,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:42:41,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:42:41,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:42:41,311 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 125 [2022-10-17 10:42:41,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 138 transitions, 699 flow. Second operand has 6 states, 6 states have (on average 88.66666666666667) internal successors, (532), 6 states have internal predecessors, (532), 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 10:42:41,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:42:41,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 125 [2022-10-17 10:42:41,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:42:42,581 INFO L130 PetriNetUnfolder]: 2785/5228 cut-off events. [2022-10-17 10:42:42,582 INFO L131 PetriNetUnfolder]: For 13553/13633 co-relation queries the response was YES. [2022-10-17 10:42:42,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19192 conditions, 5228 events. 2785/5228 cut-off events. For 13553/13633 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 37007 event pairs, 381 based on Foata normal form. 141/5152 useless extension candidates. Maximal degree in co-relation 19169. Up to 1693 conditions per place. [2022-10-17 10:42:42,669 INFO L137 encePairwiseOnDemand]: 114/125 looper letters, 98 selfloop transitions, 21 changer transitions 0/195 dead transitions. [2022-10-17 10:42:42,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 195 transitions, 1275 flow [2022-10-17 10:42:42,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:42:42,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:42:42,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 668 transitions. [2022-10-17 10:42:42,673 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7634285714285715 [2022-10-17 10:42:42,673 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 668 transitions. [2022-10-17 10:42:42,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 668 transitions. [2022-10-17 10:42:42,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:42:42,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 668 transitions. [2022-10-17 10:42:42,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.42857142857143) internal successors, (668), 7 states have internal predecessors, (668), 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 10:42:42,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 125.0) internal successors, (1000), 8 states have internal predecessors, (1000), 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 10:42:42,679 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 125.0) internal successors, (1000), 8 states have internal predecessors, (1000), 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 10:42:42,679 INFO L175 Difference]: Start difference. First operand has 145 places, 138 transitions, 699 flow. Second operand 7 states and 668 transitions. [2022-10-17 10:42:42,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 195 transitions, 1275 flow [2022-10-17 10:42:42,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 195 transitions, 1261 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-10-17 10:42:42,742 INFO L231 Difference]: Finished difference. Result has 151 places, 141 transitions, 792 flow [2022-10-17 10:42:42,743 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=792, PETRI_PLACES=151, PETRI_TRANSITIONS=141} [2022-10-17 10:42:42,745 INFO L287 CegarLoopForPetriNet]: 111 programPoint places, 40 predicate places. [2022-10-17 10:42:42,745 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 141 transitions, 792 flow [2022-10-17 10:42:42,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.66666666666667) internal successors, (532), 6 states have internal predecessors, (532), 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 10:42:42,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:42:42,746 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] [2022-10-17 10:42:42,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:42:42,747 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:42:42,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:42:42,747 INFO L85 PathProgramCache]: Analyzing trace with hash -316518543, now seen corresponding path program 2 times [2022-10-17 10:42:42,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:42:42,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714155361] [2022-10-17 10:42:42,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:42:42,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:42:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:42:43,116 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 10:42:43,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:42:43,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714155361] [2022-10-17 10:42:43,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714155361] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:42:43,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505133514] [2022-10-17 10:42:43,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:42:43,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:42:43,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:42:43,122 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:42:43,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:42:43,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:42:43,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:42:43,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:42:43,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:42:43,578 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 10:42:43,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:42:43,825 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 10:42:43,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505133514] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:42:43,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:42:43,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-10-17 10:42:43,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18615820] [2022-10-17 10:42:43,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:42:43,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-17 10:42:43,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:42:43,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-17 10:42:43,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:42:43,837 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 125 [2022-10-17 10:42:43,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 141 transitions, 792 flow. Second operand has 14 states, 14 states have (on average 81.85714285714286) internal successors, (1146), 14 states have internal predecessors, (1146), 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 10:42:43,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:42:43,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 125 [2022-10-17 10:42:43,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:42:46,200 INFO L130 PetriNetUnfolder]: 4341/7576 cut-off events. [2022-10-17 10:42:46,200 INFO L131 PetriNetUnfolder]: For 29063/29138 co-relation queries the response was YES. [2022-10-17 10:42:46,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31688 conditions, 7576 events. 4341/7576 cut-off events. For 29063/29138 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 53092 event pairs, 1179 based on Foata normal form. 150/7499 useless extension candidates. Maximal degree in co-relation 31662. Up to 2702 conditions per place. [2022-10-17 10:42:46,310 INFO L137 encePairwiseOnDemand]: 110/125 looper letters, 223 selfloop transitions, 32 changer transitions 2/319 dead transitions. [2022-10-17 10:42:46,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 319 transitions, 2721 flow [2022-10-17 10:42:46,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:42:46,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-10-17 10:42:46,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1247 transitions. [2022-10-17 10:42:46,316 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7125714285714285 [2022-10-17 10:42:46,317 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1247 transitions. [2022-10-17 10:42:46,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1247 transitions. [2022-10-17 10:42:46,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:42:46,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1247 transitions. [2022-10-17 10:42:46,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 89.07142857142857) internal successors, (1247), 14 states have internal predecessors, (1247), 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 10:42:46,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 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 10:42:46,329 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 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 10:42:46,330 INFO L175 Difference]: Start difference. First operand has 151 places, 141 transitions, 792 flow. Second operand 14 states and 1247 transitions. [2022-10-17 10:42:46,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 319 transitions, 2721 flow [2022-10-17 10:42:46,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 319 transitions, 2644 flow, removed 28 selfloop flow, removed 3 redundant places. [2022-10-17 10:42:46,493 INFO L231 Difference]: Finished difference. Result has 168 places, 150 transitions, 950 flow [2022-10-17 10:42:46,493 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=950, PETRI_PLACES=168, PETRI_TRANSITIONS=150} [2022-10-17 10:42:46,494 INFO L287 CegarLoopForPetriNet]: 111 programPoint places, 57 predicate places. [2022-10-17 10:42:46,494 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 150 transitions, 950 flow [2022-10-17 10:42:46,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 81.85714285714286) internal successors, (1146), 14 states have internal predecessors, (1146), 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 10:42:46,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:42:46,495 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] [2022-10-17 10:42:46,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:42:46,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:42:46,710 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:42:46,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:42:46,710 INFO L85 PathProgramCache]: Analyzing trace with hash 862310761, now seen corresponding path program 1 times [2022-10-17 10:42:46,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:42:46,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011127162] [2022-10-17 10:42:46,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:42:46,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:42:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:42:47,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:42:47,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:42:47,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011127162] [2022-10-17 10:42:47,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011127162] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:42:47,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311376724] [2022-10-17 10:42:47,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:42:47,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:42:47,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:42:47,950 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:42:47,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d563173-bbc5-4e93-b846-96f3d362e312/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:42:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:42:48,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-17 10:42:48,724 INFO L286 TraceCheckSpWp]: Computing forward predicates...