./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:08:25,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:08:25,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:08:26,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:08:26,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:08:26,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:08:26,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:08:26,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:08:26,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:08:26,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:08:26,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:08:26,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:08:26,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:08:26,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:08:26,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:08:26,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:08:26,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:08:26,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:08:26,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:08:26,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:08:26,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:08:26,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:08:26,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:08:26,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:08:26,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:08:26,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:08:26,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:08:26,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:08:26,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:08:26,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:08:26,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:08:26,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:08:26,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:08:26,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:08:26,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:08:26,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:08:26,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:08:26,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:08:26,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:08:26,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:08:26,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:08:26,062 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:08:26,098 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:08:26,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:08:26,107 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:08:26,107 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:08:26,109 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:08:26,109 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:08:26,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:08:26,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:08:26,110 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:08:26,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:08:26,112 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:08:26,112 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:08:26,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:08:26,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:08:26,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:08:26,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:08:26,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:08:26,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:08:26,113 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:08:26,113 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:08:26,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:08:26,114 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:08:26,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:08:26,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:08:26,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:08:26,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:08:26,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:08:26,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:08:26,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:08:26,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:08:26,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:08:26,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:08:26,116 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:08:26,117 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:08:26,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:08:26,117 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_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 [2022-11-18 20:08:26,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:08:26,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:08:26,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:08:26,405 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:08:26,405 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:08:26,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2022-11-18 20:08:26,482 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/data/04ccb5bc9/02746f35a4f74ea38cf55c5900494376/FLAG01ec47927 [2022-11-18 20:08:26,937 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:08:26,937 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2022-11-18 20:08:26,944 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/data/04ccb5bc9/02746f35a4f74ea38cf55c5900494376/FLAG01ec47927 [2022-11-18 20:08:27,321 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/data/04ccb5bc9/02746f35a4f74ea38cf55c5900494376 [2022-11-18 20:08:27,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:08:27,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:08:27,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:08:27,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:08:27,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:08:27,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:08:27" (1/1) ... [2022-11-18 20:08:27,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5532551c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:27, skipping insertion in model container [2022-11-18 20:08:27,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:08:27" (1/1) ... [2022-11-18 20:08:27,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:08:27,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:08:27,597 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c[2434,2447] [2022-11-18 20:08:27,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:08:27,613 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:08:27,634 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c[2434,2447] [2022-11-18 20:08:27,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:08:27,649 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:08:27,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:27 WrapperNode [2022-11-18 20:08:27,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:08:27,651 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:08:27,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:08:27,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:08:27,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:27" (1/1) ... [2022-11-18 20:08:27,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:27" (1/1) ... [2022-11-18 20:08:27,689 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 107 [2022-11-18 20:08:27,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:08:27,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:08:27,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:08:27,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:08:27,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:27" (1/1) ... [2022-11-18 20:08:27,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:27" (1/1) ... [2022-11-18 20:08:27,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:27" (1/1) ... [2022-11-18 20:08:27,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:27" (1/1) ... [2022-11-18 20:08:27,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:27" (1/1) ... [2022-11-18 20:08:27,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:27" (1/1) ... [2022-11-18 20:08:27,725 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:27" (1/1) ... [2022-11-18 20:08:27,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:27" (1/1) ... [2022-11-18 20:08:27,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:08:27,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:08:27,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:08:27,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:08:27,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:27" (1/1) ... [2022-11-18 20:08:27,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:08:27,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:27,774 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:08:27,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:08:27,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:08:27,811 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:08:27,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:08:27,811 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:08:27,812 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:08:27,812 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:08:27,812 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:08:27,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:08:27,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:08:27,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:08:27,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:08:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:08:27,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:08:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:08:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:08:27,815 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:08:27,918 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:08:27,920 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:08:28,389 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:08:28,405 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:08:28,405 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 20:08:28,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:08:28 BoogieIcfgContainer [2022-11-18 20:08:28,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:08:28,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:08:28,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:08:28,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:08:28,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:08:27" (1/3) ... [2022-11-18 20:08:28,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c631794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:08:28, skipping insertion in model container [2022-11-18 20:08:28,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:27" (2/3) ... [2022-11-18 20:08:28,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c631794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:08:28, skipping insertion in model container [2022-11-18 20:08:28,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:08:28" (3/3) ... [2022-11-18 20:08:28,421 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2022-11-18 20:08:28,429 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:08:28,440 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:08:28,441 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-18 20:08:28,441 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:08:28,552 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:08:28,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 219 transitions, 462 flow [2022-11-18 20:08:28,720 INFO L130 PetriNetUnfolder]: 15/216 cut-off events. [2022-11-18 20:08:28,720 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:08:28,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 216 events. 15/216 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 358 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 158. Up to 2 conditions per place. [2022-11-18 20:08:28,727 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 219 transitions, 462 flow [2022-11-18 20:08:28,734 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 195 transitions, 405 flow [2022-11-18 20:08:28,746 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:08:28,754 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;@267f3b78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:08:28,754 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-11-18 20:08:28,776 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-11-18 20:08:28,785 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:08:28,786 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:28,786 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:28,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:08:28,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:28,795 INFO L85 PathProgramCache]: Analyzing trace with hash -2033555441, now seen corresponding path program 1 times [2022-11-18 20:08:28,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:28,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136533955] [2022-11-18 20:08:28,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:28,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:29,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:29,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:29,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136533955] [2022-11-18 20:08:29,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136533955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:29,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:29,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:08:29,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353902330] [2022-11-18 20:08:29,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:29,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:08:29,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:29,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:08:29,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:08:29,397 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 219 [2022-11-18 20:08:29,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 195 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:29,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:29,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 219 [2022-11-18 20:08:29,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:29,661 INFO L130 PetriNetUnfolder]: 13/324 cut-off events. [2022-11-18 20:08:29,661 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-18 20:08:29,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 324 events. 13/324 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1054 event pairs, 0 based on Foata normal form. 22/294 useless extension candidates. Maximal degree in co-relation 276. Up to 18 conditions per place. [2022-11-18 20:08:29,672 INFO L137 encePairwiseOnDemand]: 206/219 looper letters, 26 selfloop transitions, 4 changer transitions 3/201 dead transitions. [2022-11-18 20:08:29,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 201 transitions, 492 flow [2022-11-18 20:08:29,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:08:29,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:08:29,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1004 transitions. [2022-11-18 20:08:29,699 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9168949771689497 [2022-11-18 20:08:29,700 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1004 transitions. [2022-11-18 20:08:29,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1004 transitions. [2022-11-18 20:08:29,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:29,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1004 transitions. [2022-11-18 20:08:29,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 200.8) internal successors, (1004), 5 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:29,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 219.0) internal successors, (1314), 6 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:29,731 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 219.0) internal successors, (1314), 6 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:29,733 INFO L175 Difference]: Start difference. First operand has 191 places, 195 transitions, 405 flow. Second operand 5 states and 1004 transitions. [2022-11-18 20:08:29,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 201 transitions, 492 flow [2022-11-18 20:08:29,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 201 transitions, 474 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:08:29,746 INFO L231 Difference]: Finished difference. Result has 193 places, 188 transitions, 406 flow [2022-11-18 20:08:29,748 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=406, PETRI_PLACES=193, PETRI_TRANSITIONS=188} [2022-11-18 20:08:29,753 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 2 predicate places. [2022-11-18 20:08:29,753 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 188 transitions, 406 flow [2022-11-18 20:08:29,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:29,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:29,755 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:29,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:08:29,757 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:08:29,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:29,759 INFO L85 PathProgramCache]: Analyzing trace with hash 381600484, now seen corresponding path program 1 times [2022-11-18 20:08:29,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:29,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19044416] [2022-11-18 20:08:29,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:29,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:29,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:29,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19044416] [2022-11-18 20:08:29,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19044416] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:08:29,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264648102] [2022-11-18 20:08:29,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:29,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:29,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:29,977 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:29,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:08:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:30,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:08:30,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:30,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:30,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:08:30,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:30,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264648102] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:08:30,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:08:30,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:08:30,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470380950] [2022-11-18 20:08:30,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:08:30,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:08:30,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:30,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:08:30,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:08:30,290 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 219 [2022-11-18 20:08:30,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 188 transitions, 406 flow. Second operand has 12 states, 12 states have (on average 194.66666666666666) internal successors, (2336), 12 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:30,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:30,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 219 [2022-11-18 20:08:30,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:30,694 INFO L130 PetriNetUnfolder]: 31/727 cut-off events. [2022-11-18 20:08:30,695 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-18 20:08:30,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 847 conditions, 727 events. 31/727 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3732 event pairs, 0 based on Foata normal form. 3/615 useless extension candidates. Maximal degree in co-relation 632. Up to 13 conditions per place. [2022-11-18 20:08:30,703 INFO L137 encePairwiseOnDemand]: 212/219 looper letters, 53 selfloop transitions, 18 changer transitions 0/239 dead transitions. [2022-11-18 20:08:30,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 239 transitions, 696 flow [2022-11-18 20:08:30,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:08:30,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:08:30,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3530 transitions. [2022-11-18 20:08:30,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8954845256215119 [2022-11-18 20:08:30,712 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3530 transitions. [2022-11-18 20:08:30,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3530 transitions. [2022-11-18 20:08:30,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:30,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3530 transitions. [2022-11-18 20:08:30,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 196.11111111111111) internal successors, (3530), 18 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:30,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 219.0) internal successors, (4161), 19 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:30,753 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 219.0) internal successors, (4161), 19 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:30,753 INFO L175 Difference]: Start difference. First operand has 193 places, 188 transitions, 406 flow. Second operand 18 states and 3530 transitions. [2022-11-18 20:08:30,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 239 transitions, 696 flow [2022-11-18 20:08:30,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 239 transitions, 694 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:08:30,763 INFO L231 Difference]: Finished difference. Result has 210 places, 200 transitions, 510 flow [2022-11-18 20:08:30,764 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=510, PETRI_PLACES=210, PETRI_TRANSITIONS=200} [2022-11-18 20:08:30,764 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 19 predicate places. [2022-11-18 20:08:30,765 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 200 transitions, 510 flow [2022-11-18 20:08:30,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 194.66666666666666) internal successors, (2336), 12 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:30,767 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:30,768 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:30,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:30,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:30,973 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:08:30,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:30,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1055286476, now seen corresponding path program 1 times [2022-11-18 20:08:30,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:30,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838289404] [2022-11-18 20:08:30,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:30,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:31,141 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:31,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:31,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838289404] [2022-11-18 20:08:31,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838289404] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:08:31,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177656226] [2022-11-18 20:08:31,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:31,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:31,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:31,144 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:31,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:08:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:31,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:08:31,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:31,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:31,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177656226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:31,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:08:31,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:08:31,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632324723] [2022-11-18 20:08:31,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:31,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:08:31,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:31,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:08:31,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:08:31,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 219 [2022-11-18 20:08:31,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 200 transitions, 510 flow. Second operand has 6 states, 6 states have (on average 194.33333333333334) internal successors, (1166), 6 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:31,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:31,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 219 [2022-11-18 20:08:31,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:31,630 INFO L130 PetriNetUnfolder]: 31/723 cut-off events. [2022-11-18 20:08:31,630 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-11-18 20:08:31,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 865 conditions, 723 events. 31/723 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3697 event pairs, 0 based on Foata normal form. 4/612 useless extension candidates. Maximal degree in co-relation 676. Up to 36 conditions per place. [2022-11-18 20:08:31,638 INFO L137 encePairwiseOnDemand]: 214/219 looper letters, 27 selfloop transitions, 11 changer transitions 0/206 dead transitions. [2022-11-18 20:08:31,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 206 transitions, 587 flow [2022-11-18 20:08:31,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:08:31,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:08:31,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1374 transitions. [2022-11-18 20:08:31,642 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8962818003913894 [2022-11-18 20:08:31,643 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1374 transitions. [2022-11-18 20:08:31,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1374 transitions. [2022-11-18 20:08:31,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:31,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1374 transitions. [2022-11-18 20:08:31,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 196.28571428571428) internal successors, (1374), 7 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:31,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 219.0) internal successors, (1752), 8 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:31,652 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 219.0) internal successors, (1752), 8 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:31,653 INFO L175 Difference]: Start difference. First operand has 210 places, 200 transitions, 510 flow. Second operand 7 states and 1374 transitions. [2022-11-18 20:08:31,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 206 transitions, 587 flow [2022-11-18 20:08:31,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 206 transitions, 555 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 20:08:31,663 INFO L231 Difference]: Finished difference. Result has 206 places, 196 transitions, 473 flow [2022-11-18 20:08:31,664 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=473, PETRI_PLACES=206, PETRI_TRANSITIONS=196} [2022-11-18 20:08:31,666 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 15 predicate places. [2022-11-18 20:08:31,666 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 196 transitions, 473 flow [2022-11-18 20:08:31,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 194.33333333333334) internal successors, (1166), 6 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:31,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:31,667 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:31,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 20:08:31,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:31,873 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:08:31,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:31,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1356593606, now seen corresponding path program 1 times [2022-11-18 20:08:31,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:31,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737186931] [2022-11-18 20:08:31,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:31,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:31,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:31,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:31,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737186931] [2022-11-18 20:08:31,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737186931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:31,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:31,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:08:31,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301473812] [2022-11-18 20:08:31,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:31,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:08:31,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:31,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:08:31,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:08:31,962 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 219 [2022-11-18 20:08:31,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 196 transitions, 473 flow. Second operand has 4 states, 4 states have (on average 187.25) internal successors, (749), 4 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:31,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:31,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 219 [2022-11-18 20:08:31,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:32,535 INFO L130 PetriNetUnfolder]: 376/2403 cut-off events. [2022-11-18 20:08:32,535 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2022-11-18 20:08:32,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3153 conditions, 2403 events. 376/2403 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 19282 event pairs, 225 based on Foata normal form. 0/1808 useless extension candidates. Maximal degree in co-relation 2514. Up to 604 conditions per place. [2022-11-18 20:08:32,564 INFO L137 encePairwiseOnDemand]: 214/219 looper letters, 19 selfloop transitions, 3 changer transitions 0/194 dead transitions. [2022-11-18 20:08:32,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 194 transitions, 513 flow [2022-11-18 20:08:32,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:08:32,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:08:32,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 764 transitions. [2022-11-18 20:08:32,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8721461187214612 [2022-11-18 20:08:32,567 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 764 transitions. [2022-11-18 20:08:32,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 764 transitions. [2022-11-18 20:08:32,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:32,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 764 transitions. [2022-11-18 20:08:32,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:32,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:32,571 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:32,571 INFO L175 Difference]: Start difference. First operand has 206 places, 196 transitions, 473 flow. Second operand 4 states and 764 transitions. [2022-11-18 20:08:32,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 194 transitions, 513 flow [2022-11-18 20:08:32,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 194 transitions, 499 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:08:32,578 INFO L231 Difference]: Finished difference. Result has 202 places, 194 transitions, 461 flow [2022-11-18 20:08:32,578 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=461, PETRI_PLACES=202, PETRI_TRANSITIONS=194} [2022-11-18 20:08:32,580 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 11 predicate places. [2022-11-18 20:08:32,580 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 194 transitions, 461 flow [2022-11-18 20:08:32,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.25) internal successors, (749), 4 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:32,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:32,583 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:32,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:08:32,583 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:08:32,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:32,583 INFO L85 PathProgramCache]: Analyzing trace with hash -895270640, now seen corresponding path program 1 times [2022-11-18 20:08:32,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:32,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964697684] [2022-11-18 20:08:32,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:32,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:32,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:32,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964697684] [2022-11-18 20:08:32,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964697684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:32,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:32,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:08:32,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770508503] [2022-11-18 20:08:32,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:32,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:08:32,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:32,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:08:32,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:08:32,869 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 219 [2022-11-18 20:08:32,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 194 transitions, 461 flow. Second operand has 8 states, 8 states have (on average 166.75) internal successors, (1334), 8 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:32,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:32,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 219 [2022-11-18 20:08:32,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:33,463 INFO L130 PetriNetUnfolder]: 296/2138 cut-off events. [2022-11-18 20:08:33,464 INFO L131 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2022-11-18 20:08:33,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2752 conditions, 2138 events. 296/2138 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 16746 event pairs, 160 based on Foata normal form. 0/1683 useless extension candidates. Maximal degree in co-relation 2712. Up to 481 conditions per place. [2022-11-18 20:08:33,488 INFO L137 encePairwiseOnDemand]: 210/219 looper letters, 26 selfloop transitions, 7 changer transitions 0/192 dead transitions. [2022-11-18 20:08:33,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 192 transitions, 523 flow [2022-11-18 20:08:33,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:08:33,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:08:33,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1347 transitions. [2022-11-18 20:08:33,493 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7688356164383562 [2022-11-18 20:08:33,493 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1347 transitions. [2022-11-18 20:08:33,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1347 transitions. [2022-11-18 20:08:33,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:33,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1347 transitions. [2022-11-18 20:08:33,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 168.375) internal successors, (1347), 8 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:33,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 219.0) internal successors, (1971), 9 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:33,503 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 219.0) internal successors, (1971), 9 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:33,503 INFO L175 Difference]: Start difference. First operand has 202 places, 194 transitions, 461 flow. Second operand 8 states and 1347 transitions. [2022-11-18 20:08:33,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 192 transitions, 523 flow [2022-11-18 20:08:33,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 192 transitions, 517 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:08:33,510 INFO L231 Difference]: Finished difference. Result has 204 places, 192 transitions, 465 flow [2022-11-18 20:08:33,510 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=465, PETRI_PLACES=204, PETRI_TRANSITIONS=192} [2022-11-18 20:08:33,513 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 13 predicate places. [2022-11-18 20:08:33,513 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 192 transitions, 465 flow [2022-11-18 20:08:33,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 166.75) internal successors, (1334), 8 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:33,514 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:33,515 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:33,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:08:33,515 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:08:33,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:33,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2011731603, now seen corresponding path program 1 times [2022-11-18 20:08:33,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:33,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069348750] [2022-11-18 20:08:33,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:33,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:33,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:33,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:33,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069348750] [2022-11-18 20:08:33,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069348750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:33,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:33,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:08:33,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552474453] [2022-11-18 20:08:33,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:33,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:08:33,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:33,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:08:33,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:08:33,606 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 219 [2022-11-18 20:08:33,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 192 transitions, 465 flow. Second operand has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:33,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:33,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 219 [2022-11-18 20:08:33,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:34,162 INFO L130 PetriNetUnfolder]: 316/2563 cut-off events. [2022-11-18 20:08:34,162 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-11-18 20:08:34,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3407 conditions, 2563 events. 316/2563 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 21974 event pairs, 115 based on Foata normal form. 0/2133 useless extension candidates. Maximal degree in co-relation 3355. Up to 296 conditions per place. [2022-11-18 20:08:34,189 INFO L137 encePairwiseOnDemand]: 215/219 looper letters, 26 selfloop transitions, 2 changer transitions 0/204 dead transitions. [2022-11-18 20:08:34,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 204 transitions, 550 flow [2022-11-18 20:08:34,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:08:34,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:08:34,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 609 transitions. [2022-11-18 20:08:34,191 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9269406392694064 [2022-11-18 20:08:34,191 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 609 transitions. [2022-11-18 20:08:34,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 609 transitions. [2022-11-18 20:08:34,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:34,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 609 transitions. [2022-11-18 20:08:34,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:34,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:34,195 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:34,195 INFO L175 Difference]: Start difference. First operand has 204 places, 192 transitions, 465 flow. Second operand 3 states and 609 transitions. [2022-11-18 20:08:34,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 204 transitions, 550 flow [2022-11-18 20:08:34,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 204 transitions, 537 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 20:08:34,200 INFO L231 Difference]: Finished difference. Result has 201 places, 193 transitions, 466 flow [2022-11-18 20:08:34,200 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=466, PETRI_PLACES=201, PETRI_TRANSITIONS=193} [2022-11-18 20:08:34,201 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 10 predicate places. [2022-11-18 20:08:34,201 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 193 transitions, 466 flow [2022-11-18 20:08:34,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:34,202 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:34,202 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:34,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:08:34,202 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:08:34,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:34,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1444544622, now seen corresponding path program 1 times [2022-11-18 20:08:34,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:34,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161496760] [2022-11-18 20:08:34,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:34,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:34,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:34,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:34,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161496760] [2022-11-18 20:08:34,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161496760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:34,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:34,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:08:34,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736715230] [2022-11-18 20:08:34,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:34,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:08:34,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:34,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:08:34,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:08:34,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 219 [2022-11-18 20:08:34,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 193 transitions, 466 flow. Second operand has 4 states, 4 states have (on average 189.25) internal successors, (757), 4 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:34,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:34,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 219 [2022-11-18 20:08:34,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:34,678 INFO L130 PetriNetUnfolder]: 326/1618 cut-off events. [2022-11-18 20:08:34,679 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-18 20:08:34,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2862 conditions, 1618 events. 326/1618 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 12624 event pairs, 150 based on Foata normal form. 0/1443 useless extension candidates. Maximal degree in co-relation 2815. Up to 416 conditions per place. [2022-11-18 20:08:34,697 INFO L137 encePairwiseOnDemand]: 213/219 looper letters, 36 selfloop transitions, 4 changer transitions 0/211 dead transitions. [2022-11-18 20:08:34,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 211 transitions, 593 flow [2022-11-18 20:08:34,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:08:34,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:08:34,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 982 transitions. [2022-11-18 20:08:34,700 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8968036529680365 [2022-11-18 20:08:34,700 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 982 transitions. [2022-11-18 20:08:34,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 982 transitions. [2022-11-18 20:08:34,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:34,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 982 transitions. [2022-11-18 20:08:34,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 196.4) internal successors, (982), 5 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:34,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 219.0) internal successors, (1314), 6 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:34,706 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 219.0) internal successors, (1314), 6 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:34,707 INFO L175 Difference]: Start difference. First operand has 201 places, 193 transitions, 466 flow. Second operand 5 states and 982 transitions. [2022-11-18 20:08:34,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 211 transitions, 593 flow [2022-11-18 20:08:34,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 211 transitions, 591 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:08:34,712 INFO L231 Difference]: Finished difference. Result has 207 places, 195 transitions, 490 flow [2022-11-18 20:08:34,712 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=490, PETRI_PLACES=207, PETRI_TRANSITIONS=195} [2022-11-18 20:08:34,713 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 16 predicate places. [2022-11-18 20:08:34,713 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 195 transitions, 490 flow [2022-11-18 20:08:34,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 189.25) internal successors, (757), 4 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:34,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:34,714 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:34,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:08:34,714 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:08:34,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:34,714 INFO L85 PathProgramCache]: Analyzing trace with hash 455247221, now seen corresponding path program 1 times [2022-11-18 20:08:34,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:34,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369252541] [2022-11-18 20:08:34,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:34,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:34,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:34,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:34,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369252541] [2022-11-18 20:08:34,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369252541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:34,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:34,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:08:34,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95880957] [2022-11-18 20:08:34,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:34,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:08:34,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:34,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:08:34,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:08:34,794 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 219 [2022-11-18 20:08:34,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 195 transitions, 490 flow. Second operand has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:34,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:34,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 219 [2022-11-18 20:08:34,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:35,364 INFO L130 PetriNetUnfolder]: 356/1978 cut-off events. [2022-11-18 20:08:35,364 INFO L131 PetriNetUnfolder]: For 262/317 co-relation queries the response was YES. [2022-11-18 20:08:35,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3000 conditions, 1978 events. 356/1978 cut-off events. For 262/317 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 17643 event pairs, 150 based on Foata normal form. 0/1613 useless extension candidates. Maximal degree in co-relation 2950. Up to 406 conditions per place. [2022-11-18 20:08:35,389 INFO L137 encePairwiseOnDemand]: 215/219 looper letters, 25 selfloop transitions, 2 changer transitions 0/206 dead transitions. [2022-11-18 20:08:35,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 206 transitions, 570 flow [2022-11-18 20:08:35,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:08:35,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:08:35,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2022-11-18 20:08:35,392 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9254185692541856 [2022-11-18 20:08:35,392 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2022-11-18 20:08:35,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2022-11-18 20:08:35,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:35,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2022-11-18 20:08:35,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:35,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:35,397 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:35,397 INFO L175 Difference]: Start difference. First operand has 207 places, 195 transitions, 490 flow. Second operand 3 states and 608 transitions. [2022-11-18 20:08:35,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 206 transitions, 570 flow [2022-11-18 20:08:35,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 206 transitions, 566 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:08:35,407 INFO L231 Difference]: Finished difference. Result has 208 places, 196 transitions, 500 flow [2022-11-18 20:08:35,407 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=500, PETRI_PLACES=208, PETRI_TRANSITIONS=196} [2022-11-18 20:08:35,410 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 17 predicate places. [2022-11-18 20:08:35,410 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 196 transitions, 500 flow [2022-11-18 20:08:35,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:35,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:35,411 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:35,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:08:35,411 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:08:35,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:35,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1249936986, now seen corresponding path program 1 times [2022-11-18 20:08:35,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:35,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147327299] [2022-11-18 20:08:35,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:35,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:35,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:35,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147327299] [2022-11-18 20:08:35,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147327299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:35,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:35,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:08:35,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201907124] [2022-11-18 20:08:35,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:35,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:08:35,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:35,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:08:35,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:08:35,516 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 219 [2022-11-18 20:08:35,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 196 transitions, 500 flow. Second operand has 4 states, 4 states have (on average 189.5) internal successors, (758), 4 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:35,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:35,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 219 [2022-11-18 20:08:35,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:36,049 INFO L130 PetriNetUnfolder]: 476/2078 cut-off events. [2022-11-18 20:08:36,049 INFO L131 PetriNetUnfolder]: For 372/442 co-relation queries the response was YES. [2022-11-18 20:08:36,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3571 conditions, 2078 events. 476/2078 cut-off events. For 372/442 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 18936 event pairs, 225 based on Foata normal form. 10/1763 useless extension candidates. Maximal degree in co-relation 3520. Up to 581 conditions per place. [2022-11-18 20:08:36,078 INFO L137 encePairwiseOnDemand]: 213/219 looper letters, 35 selfloop transitions, 4 changer transitions 0/213 dead transitions. [2022-11-18 20:08:36,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 213 transitions, 622 flow [2022-11-18 20:08:36,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:08:36,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:08:36,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 981 transitions. [2022-11-18 20:08:36,081 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8958904109589041 [2022-11-18 20:08:36,081 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 981 transitions. [2022-11-18 20:08:36,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 981 transitions. [2022-11-18 20:08:36,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:36,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 981 transitions. [2022-11-18 20:08:36,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:36,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 219.0) internal successors, (1314), 6 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:36,087 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 219.0) internal successors, (1314), 6 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:36,087 INFO L175 Difference]: Start difference. First operand has 208 places, 196 transitions, 500 flow. Second operand 5 states and 981 transitions. [2022-11-18 20:08:36,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 213 transitions, 622 flow [2022-11-18 20:08:36,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 213 transitions, 620 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:08:36,093 INFO L231 Difference]: Finished difference. Result has 214 places, 198 transitions, 524 flow [2022-11-18 20:08:36,094 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=524, PETRI_PLACES=214, PETRI_TRANSITIONS=198} [2022-11-18 20:08:36,095 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 23 predicate places. [2022-11-18 20:08:36,095 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 198 transitions, 524 flow [2022-11-18 20:08:36,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 189.5) internal successors, (758), 4 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:36,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:36,096 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:36,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:08:36,096 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:08:36,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:36,097 INFO L85 PathProgramCache]: Analyzing trace with hash -2086822956, now seen corresponding path program 1 times [2022-11-18 20:08:36,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:36,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416705889] [2022-11-18 20:08:36,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:36,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:36,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:36,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:36,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416705889] [2022-11-18 20:08:36,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416705889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:36,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:36,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:08:36,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509869520] [2022-11-18 20:08:36,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:36,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:08:36,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:36,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:08:36,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:08:36,165 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 219 [2022-11-18 20:08:36,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 198 transitions, 524 flow. Second operand has 4 states, 4 states have (on average 182.25) internal successors, (729), 4 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:36,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:36,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 219 [2022-11-18 20:08:36,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:37,154 INFO L130 PetriNetUnfolder]: 1146/4568 cut-off events. [2022-11-18 20:08:37,154 INFO L131 PetriNetUnfolder]: For 512/732 co-relation queries the response was YES. [2022-11-18 20:08:37,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7117 conditions, 4568 events. 1146/4568 cut-off events. For 512/732 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 43319 event pairs, 395 based on Foata normal form. 5/3743 useless extension candidates. Maximal degree in co-relation 7060. Up to 1015 conditions per place. [2022-11-18 20:08:37,212 INFO L137 encePairwiseOnDemand]: 212/219 looper letters, 30 selfloop transitions, 6 changer transitions 0/208 dead transitions. [2022-11-18 20:08:37,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 208 transitions, 621 flow [2022-11-18 20:08:37,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:08:37,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:08:37,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 753 transitions. [2022-11-18 20:08:37,215 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595890410958904 [2022-11-18 20:08:37,215 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 753 transitions. [2022-11-18 20:08:37,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 753 transitions. [2022-11-18 20:08:37,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:37,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 753 transitions. [2022-11-18 20:08:37,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 188.25) internal successors, (753), 4 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:37,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:37,221 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:37,222 INFO L175 Difference]: Start difference. First operand has 214 places, 198 transitions, 524 flow. Second operand 4 states and 753 transitions. [2022-11-18 20:08:37,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 208 transitions, 621 flow [2022-11-18 20:08:37,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 208 transitions, 617 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:08:37,229 INFO L231 Difference]: Finished difference. Result has 215 places, 199 transitions, 542 flow [2022-11-18 20:08:37,230 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=542, PETRI_PLACES=215, PETRI_TRANSITIONS=199} [2022-11-18 20:08:37,231 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 24 predicate places. [2022-11-18 20:08:37,231 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 199 transitions, 542 flow [2022-11-18 20:08:37,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 182.25) internal successors, (729), 4 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:37,232 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:37,232 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:37,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:08:37,233 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:08:37,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:37,233 INFO L85 PathProgramCache]: Analyzing trace with hash -267001590, now seen corresponding path program 1 times [2022-11-18 20:08:37,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:37,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527292777] [2022-11-18 20:08:37,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:37,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:37,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:37,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:37,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527292777] [2022-11-18 20:08:37,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527292777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:37,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:37,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:08:37,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884984255] [2022-11-18 20:08:37,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:37,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:08:37,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:37,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:08:37,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:08:37,358 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 219 [2022-11-18 20:08:37,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 199 transitions, 542 flow. Second operand has 5 states, 5 states have (on average 187.8) internal successors, (939), 5 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:37,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:37,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 219 [2022-11-18 20:08:37,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:40,139 INFO L130 PetriNetUnfolder]: 3911/13493 cut-off events. [2022-11-18 20:08:40,139 INFO L131 PetriNetUnfolder]: For 2093/2113 co-relation queries the response was YES. [2022-11-18 20:08:40,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21297 conditions, 13493 events. 3911/13493 cut-off events. For 2093/2113 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 156411 event pairs, 1720 based on Foata normal form. 0/11218 useless extension candidates. Maximal degree in co-relation 21235. Up to 3393 conditions per place. [2022-11-18 20:08:40,308 INFO L137 encePairwiseOnDemand]: 213/219 looper letters, 30 selfloop transitions, 5 changer transitions 0/211 dead transitions. [2022-11-18 20:08:40,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 211 transitions, 642 flow [2022-11-18 20:08:40,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:08:40,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:08:40,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 961 transitions. [2022-11-18 20:08:40,312 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8776255707762557 [2022-11-18 20:08:40,312 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 961 transitions. [2022-11-18 20:08:40,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 961 transitions. [2022-11-18 20:08:40,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:40,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 961 transitions. [2022-11-18 20:08:40,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 192.2) internal successors, (961), 5 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:40,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 219.0) internal successors, (1314), 6 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:40,327 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 219.0) internal successors, (1314), 6 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:40,327 INFO L175 Difference]: Start difference. First operand has 215 places, 199 transitions, 542 flow. Second operand 5 states and 961 transitions. [2022-11-18 20:08:40,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 211 transitions, 642 flow [2022-11-18 20:08:40,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 211 transitions, 630 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:08:40,337 INFO L231 Difference]: Finished difference. Result has 218 places, 200 transitions, 552 flow [2022-11-18 20:08:40,337 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=552, PETRI_PLACES=218, PETRI_TRANSITIONS=200} [2022-11-18 20:08:40,338 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 27 predicate places. [2022-11-18 20:08:40,338 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 200 transitions, 552 flow [2022-11-18 20:08:40,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.8) internal successors, (939), 5 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:40,338 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:40,339 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:40,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:08:40,339 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:08:40,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:40,340 INFO L85 PathProgramCache]: Analyzing trace with hash -182680418, now seen corresponding path program 1 times [2022-11-18 20:08:40,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:40,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355495896] [2022-11-18 20:08:40,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:40,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:40,641 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:40,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:40,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355495896] [2022-11-18 20:08:40,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355495896] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:08:40,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015788166] [2022-11-18 20:08:40,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:40,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:40,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:40,644 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:40,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:08:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:40,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:08:40,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:40,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:08:40,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:40,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015788166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:40,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:08:40,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 10 [2022-11-18 20:08:40,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510315235] [2022-11-18 20:08:40,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:40,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:08:40,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:40,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:08:40,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:08:40,913 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 219 [2022-11-18 20:08:40,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 200 transitions, 552 flow. Second operand has 7 states, 7 states have (on average 171.28571428571428) internal successors, (1199), 7 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:40,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:40,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 219 [2022-11-18 20:08:40,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:42,901 INFO L130 PetriNetUnfolder]: 1587/8435 cut-off events. [2022-11-18 20:08:42,901 INFO L131 PetriNetUnfolder]: For 1183/1183 co-relation queries the response was YES. [2022-11-18 20:08:42,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12779 conditions, 8435 events. 1587/8435 cut-off events. For 1183/1183 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 92461 event pairs, 1120 based on Foata normal form. 0/7129 useless extension candidates. Maximal degree in co-relation 12712. Up to 2413 conditions per place. [2022-11-18 20:08:43,030 INFO L137 encePairwiseOnDemand]: 210/219 looper letters, 67 selfloop transitions, 8 changer transitions 0/226 dead transitions. [2022-11-18 20:08:43,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 226 transitions, 778 flow [2022-11-18 20:08:43,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:08:43,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:08:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1407 transitions. [2022-11-18 20:08:43,034 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.803082191780822 [2022-11-18 20:08:43,034 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1407 transitions. [2022-11-18 20:08:43,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1407 transitions. [2022-11-18 20:08:43,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:43,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1407 transitions. [2022-11-18 20:08:43,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 175.875) internal successors, (1407), 8 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:43,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 219.0) internal successors, (1971), 9 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:43,042 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 219.0) internal successors, (1971), 9 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:43,043 INFO L175 Difference]: Start difference. First operand has 218 places, 200 transitions, 552 flow. Second operand 8 states and 1407 transitions. [2022-11-18 20:08:43,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 226 transitions, 778 flow [2022-11-18 20:08:43,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 226 transitions, 770 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:08:43,050 INFO L231 Difference]: Finished difference. Result has 225 places, 202 transitions, 579 flow [2022-11-18 20:08:43,050 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=579, PETRI_PLACES=225, PETRI_TRANSITIONS=202} [2022-11-18 20:08:43,051 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 34 predicate places. [2022-11-18 20:08:43,051 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 202 transitions, 579 flow [2022-11-18 20:08:43,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 171.28571428571428) internal successors, (1199), 7 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:43,052 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:43,052 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:43,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:43,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:43,259 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:08:43,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:43,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1045331791, now seen corresponding path program 2 times [2022-11-18 20:08:43,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:43,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245635955] [2022-11-18 20:08:43,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:43,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:43,483 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:43,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:43,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245635955] [2022-11-18 20:08:43,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245635955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:08:43,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475685166] [2022-11-18 20:08:43,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:08:43,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:43,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:43,487 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:43,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:08:43,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:08:43,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:08:43,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:08:43,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:43,788 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:08:43,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:08:43,932 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:08:43,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475685166] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:08:43,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:08:43,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 20:08:43,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560831060] [2022-11-18 20:08:43,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:08:43,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:08:43,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:43,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:08:43,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:08:43,940 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 219 [2022-11-18 20:08:43,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 202 transitions, 579 flow. Second operand has 18 states, 18 states have (on average 172.61111111111111) internal successors, (3107), 18 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:43,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:43,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 219 [2022-11-18 20:08:43,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:46,193 INFO L130 PetriNetUnfolder]: 1189/7388 cut-off events. [2022-11-18 20:08:46,194 INFO L131 PetriNetUnfolder]: For 883/913 co-relation queries the response was YES. [2022-11-18 20:08:46,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10640 conditions, 7388 events. 1189/7388 cut-off events. For 883/913 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 78536 event pairs, 766 based on Foata normal form. 2/6342 useless extension candidates. Maximal degree in co-relation 10566. Up to 388 conditions per place. [2022-11-18 20:08:46,267 INFO L137 encePairwiseOnDemand]: 208/219 looper letters, 148 selfloop transitions, 25 changer transitions 0/325 dead transitions. [2022-11-18 20:08:46,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 325 transitions, 1289 flow [2022-11-18 20:08:46,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:08:46,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 20:08:46,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4217 transitions. [2022-11-18 20:08:46,285 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8023211567732116 [2022-11-18 20:08:46,285 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4217 transitions. [2022-11-18 20:08:46,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4217 transitions. [2022-11-18 20:08:46,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:46,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4217 transitions. [2022-11-18 20:08:46,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 175.70833333333334) internal successors, (4217), 24 states have internal predecessors, (4217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:46,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 219.0) internal successors, (5475), 25 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:46,319 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 219.0) internal successors, (5475), 25 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:46,320 INFO L175 Difference]: Start difference. First operand has 225 places, 202 transitions, 579 flow. Second operand 24 states and 4217 transitions. [2022-11-18 20:08:46,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 325 transitions, 1289 flow [2022-11-18 20:08:46,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 325 transitions, 1271 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-18 20:08:46,329 INFO L231 Difference]: Finished difference. Result has 240 places, 206 transitions, 630 flow [2022-11-18 20:08:46,330 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=630, PETRI_PLACES=240, PETRI_TRANSITIONS=206} [2022-11-18 20:08:46,331 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 49 predicate places. [2022-11-18 20:08:46,331 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 206 transitions, 630 flow [2022-11-18 20:08:46,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 172.61111111111111) internal successors, (3107), 18 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:46,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:46,333 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:46,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:46,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:08:46,538 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:08:46,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:46,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1602991479, now seen corresponding path program 1 times [2022-11-18 20:08:46,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:46,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152044245] [2022-11-18 20:08:46,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:46,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:46,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:46,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:46,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152044245] [2022-11-18 20:08:46,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152044245] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:08:46,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272644717] [2022-11-18 20:08:46,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:46,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:46,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:46,633 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:46,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:08:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:46,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:08:46,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:46,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:08:46,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:46,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272644717] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:08:46,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:08:46,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-18 20:08:46,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209047727] [2022-11-18 20:08:46,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:08:46,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:08:46,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:46,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:08:46,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:08:46,836 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 219 [2022-11-18 20:08:46,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 206 transitions, 630 flow. Second operand has 10 states, 10 states have (on average 190.8) internal successors, (1908), 10 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:46,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:46,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 219 [2022-11-18 20:08:46,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:48,303 INFO L130 PetriNetUnfolder]: 1207/5224 cut-off events. [2022-11-18 20:08:48,304 INFO L131 PetriNetUnfolder]: For 998/1094 co-relation queries the response was YES. [2022-11-18 20:08:48,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9256 conditions, 5224 events. 1207/5224 cut-off events. For 998/1094 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 55190 event pairs, 212 based on Foata normal form. 99/4624 useless extension candidates. Maximal degree in co-relation 9193. Up to 624 conditions per place. [2022-11-18 20:08:48,402 INFO L137 encePairwiseOnDemand]: 210/219 looper letters, 66 selfloop transitions, 14 changer transitions 0/262 dead transitions. [2022-11-18 20:08:48,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 262 transitions, 956 flow [2022-11-18 20:08:48,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:08:48,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:08:48,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2527 transitions. [2022-11-18 20:08:48,410 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8876009834913945 [2022-11-18 20:08:48,410 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2527 transitions. [2022-11-18 20:08:48,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2527 transitions. [2022-11-18 20:08:48,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:48,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2527 transitions. [2022-11-18 20:08:48,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 194.3846153846154) internal successors, (2527), 13 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:48,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 219.0) internal successors, (3066), 14 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:48,426 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 219.0) internal successors, (3066), 14 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:48,427 INFO L175 Difference]: Start difference. First operand has 240 places, 206 transitions, 630 flow. Second operand 13 states and 2527 transitions. [2022-11-18 20:08:48,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 262 transitions, 956 flow [2022-11-18 20:08:48,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 262 transitions, 898 flow, removed 2 selfloop flow, removed 17 redundant places. [2022-11-18 20:08:48,436 INFO L231 Difference]: Finished difference. Result has 240 places, 214 transitions, 661 flow [2022-11-18 20:08:48,437 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=661, PETRI_PLACES=240, PETRI_TRANSITIONS=214} [2022-11-18 20:08:48,438 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 49 predicate places. [2022-11-18 20:08:48,438 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 214 transitions, 661 flow [2022-11-18 20:08:48,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 190.8) internal successors, (1908), 10 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:48,439 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:48,439 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:48,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:48,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:48,644 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:08:48,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:48,645 INFO L85 PathProgramCache]: Analyzing trace with hash 952755449, now seen corresponding path program 1 times [2022-11-18 20:08:48,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:48,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070897850] [2022-11-18 20:08:48,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:48,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:48,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:48,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:48,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070897850] [2022-11-18 20:08:48,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070897850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:48,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:48,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:08:48,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180401593] [2022-11-18 20:08:48,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:48,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:08:48,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:48,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:08:48,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:08:48,807 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 219 [2022-11-18 20:08:48,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 214 transitions, 661 flow. Second operand has 8 states, 8 states have (on average 165.5) internal successors, (1324), 8 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:48,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:48,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 219 [2022-11-18 20:08:48,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:52,088 INFO L130 PetriNetUnfolder]: 4032/11902 cut-off events. [2022-11-18 20:08:52,088 INFO L131 PetriNetUnfolder]: For 3224/7311 co-relation queries the response was YES. [2022-11-18 20:08:52,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22027 conditions, 11902 events. 4032/11902 cut-off events. For 3224/7311 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 136281 event pairs, 2919 based on Foata normal form. 7/9532 useless extension candidates. Maximal degree in co-relation 21958. Up to 6464 conditions per place. [2022-11-18 20:08:52,277 INFO L137 encePairwiseOnDemand]: 205/219 looper letters, 99 selfloop transitions, 14 changer transitions 0/271 dead transitions. [2022-11-18 20:08:52,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 271 transitions, 1049 flow [2022-11-18 20:08:52,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:08:52,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:08:52,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2055 transitions. [2022-11-18 20:08:52,283 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7819634703196348 [2022-11-18 20:08:52,284 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2055 transitions. [2022-11-18 20:08:52,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2055 transitions. [2022-11-18 20:08:52,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:52,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2055 transitions. [2022-11-18 20:08:52,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 171.25) internal successors, (2055), 12 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:52,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 219.0) internal successors, (2847), 13 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:52,297 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 219.0) internal successors, (2847), 13 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:52,297 INFO L175 Difference]: Start difference. First operand has 240 places, 214 transitions, 661 flow. Second operand 12 states and 2055 transitions. [2022-11-18 20:08:52,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 271 transitions, 1049 flow [2022-11-18 20:08:52,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 271 transitions, 1029 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-18 20:08:52,307 INFO L231 Difference]: Finished difference. Result has 253 places, 221 transitions, 721 flow [2022-11-18 20:08:52,308 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=721, PETRI_PLACES=253, PETRI_TRANSITIONS=221} [2022-11-18 20:08:52,308 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 62 predicate places. [2022-11-18 20:08:52,309 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 221 transitions, 721 flow [2022-11-18 20:08:52,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.5) internal successors, (1324), 8 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:52,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:52,310 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:52,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:08:52,310 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:08:52,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:52,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1846872278, now seen corresponding path program 1 times [2022-11-18 20:08:52,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:52,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244514350] [2022-11-18 20:08:52,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:52,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:52,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:52,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:52,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244514350] [2022-11-18 20:08:52,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244514350] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:08:52,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222490915] [2022-11-18 20:08:52,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:52,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:52,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:52,410 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:52,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:08:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:52,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:08:52,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:52,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:52,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222490915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:52,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:08:52,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-18 20:08:52,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813255678] [2022-11-18 20:08:52,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:52,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:08:52,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:52,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:08:52,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:08:52,565 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 219 [2022-11-18 20:08:52,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 221 transitions, 721 flow. Second operand has 4 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:52,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:52,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 219 [2022-11-18 20:08:52,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:54,417 INFO L130 PetriNetUnfolder]: 1186/6081 cut-off events. [2022-11-18 20:08:54,417 INFO L131 PetriNetUnfolder]: For 1649/1889 co-relation queries the response was YES. [2022-11-18 20:08:54,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10950 conditions, 6081 events. 1186/6081 cut-off events. For 1649/1889 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 66881 event pairs, 524 based on Foata normal form. 141/5621 useless extension candidates. Maximal degree in co-relation 10877. Up to 1301 conditions per place. [2022-11-18 20:08:54,493 INFO L137 encePairwiseOnDemand]: 214/219 looper letters, 24 selfloop transitions, 7 changer transitions 0/220 dead transitions. [2022-11-18 20:08:54,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 220 transitions, 768 flow [2022-11-18 20:08:54,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:08:54,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:08:54,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 777 transitions. [2022-11-18 20:08:54,496 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.886986301369863 [2022-11-18 20:08:54,496 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 777 transitions. [2022-11-18 20:08:54,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 777 transitions. [2022-11-18 20:08:54,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:54,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 777 transitions. [2022-11-18 20:08:54,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 194.25) internal successors, (777), 4 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:54,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:54,503 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:54,504 INFO L175 Difference]: Start difference. First operand has 253 places, 221 transitions, 721 flow. Second operand 4 states and 777 transitions. [2022-11-18 20:08:54,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 220 transitions, 768 flow [2022-11-18 20:08:54,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 220 transitions, 758 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:08:54,521 INFO L231 Difference]: Finished difference. Result has 246 places, 216 transitions, 696 flow [2022-11-18 20:08:54,521 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=696, PETRI_PLACES=246, PETRI_TRANSITIONS=216} [2022-11-18 20:08:54,521 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 55 predicate places. [2022-11-18 20:08:54,522 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 216 transitions, 696 flow [2022-11-18 20:08:54,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:54,522 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:54,523 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:54,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-18 20:08:54,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:08:54,728 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:08:54,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:54,728 INFO L85 PathProgramCache]: Analyzing trace with hash -529351538, now seen corresponding path program 1 times [2022-11-18 20:08:54,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:54,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306336170] [2022-11-18 20:08:54,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:54,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:54,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:54,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:54,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306336170] [2022-11-18 20:08:54,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306336170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:54,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:54,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:08:54,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092872191] [2022-11-18 20:08:54,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:54,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:08:54,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:54,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:08:54,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:08:54,844 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 219 [2022-11-18 20:08:54,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 216 transitions, 696 flow. Second operand has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:54,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:54,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 219 [2022-11-18 20:08:54,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:09:01,390 INFO L130 PetriNetUnfolder]: 12456/34236 cut-off events. [2022-11-18 20:09:01,390 INFO L131 PetriNetUnfolder]: For 9583/9619 co-relation queries the response was YES. [2022-11-18 20:09:01,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62042 conditions, 34236 events. 12456/34236 cut-off events. For 9583/9619 co-relation queries the response was YES. Maximal size of possible extension queue 1264. Compared 426093 event pairs, 664 based on Foata normal form. 1047/29750 useless extension candidates. Maximal degree in co-relation 61967. Up to 11195 conditions per place. [2022-11-18 20:09:01,719 INFO L137 encePairwiseOnDemand]: 211/219 looper letters, 32 selfloop transitions, 8 changer transitions 0/220 dead transitions. [2022-11-18 20:09:01,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 220 transitions, 774 flow [2022-11-18 20:09:01,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:09:01,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:09:01,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1116 transitions. [2022-11-18 20:09:01,722 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8493150684931506 [2022-11-18 20:09:01,722 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1116 transitions. [2022-11-18 20:09:01,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1116 transitions. [2022-11-18 20:09:01,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:09:01,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1116 transitions. [2022-11-18 20:09:01,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:01,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 219.0) internal successors, (1533), 7 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:01,729 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 219.0) internal successors, (1533), 7 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:01,729 INFO L175 Difference]: Start difference. First operand has 246 places, 216 transitions, 696 flow. Second operand 6 states and 1116 transitions. [2022-11-18 20:09:01,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 220 transitions, 774 flow [2022-11-18 20:09:01,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 220 transitions, 754 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:09:01,906 INFO L231 Difference]: Finished difference. Result has 242 places, 212 transitions, 670 flow [2022-11-18 20:09:01,907 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=670, PETRI_PLACES=242, PETRI_TRANSITIONS=212} [2022-11-18 20:09:01,907 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 51 predicate places. [2022-11-18 20:09:01,907 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 212 transitions, 670 flow [2022-11-18 20:09:01,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:01,908 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:01,908 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:01,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:09:01,909 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:09:01,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:01,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1290546775, now seen corresponding path program 1 times [2022-11-18 20:09:01,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:01,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854278860] [2022-11-18 20:09:01,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:01,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:02,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:09:02,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:02,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854278860] [2022-11-18 20:09:02,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854278860] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:09:02,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610120824] [2022-11-18 20:09:02,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:02,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:02,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:09:02,038 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:09:02,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:09:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:02,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:09:02,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:09:02,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:09:02,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:09:02,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610120824] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:09:02,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:09:02,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 18 [2022-11-18 20:09:02,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305858732] [2022-11-18 20:09:02,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:09:02,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:09:02,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:02,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:09:02,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:09:02,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 219 [2022-11-18 20:09:02,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 212 transitions, 670 flow. Second operand has 18 states, 18 states have (on average 162.61111111111111) internal successors, (2927), 18 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:02,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:09:02,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 219 [2022-11-18 20:09:02,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:09:06,832 INFO L130 PetriNetUnfolder]: 3545/13772 cut-off events. [2022-11-18 20:09:06,832 INFO L131 PetriNetUnfolder]: For 3583/10453 co-relation queries the response was YES. [2022-11-18 20:09:06,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25533 conditions, 13772 events. 3545/13772 cut-off events. For 3583/10453 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 155671 event pairs, 1198 based on Foata normal form. 98/12873 useless extension candidates. Maximal degree in co-relation 25456. Up to 1709 conditions per place. [2022-11-18 20:09:07,037 INFO L137 encePairwiseOnDemand]: 201/219 looper letters, 167 selfloop transitions, 28 changer transitions 0/337 dead transitions. [2022-11-18 20:09:07,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 337 transitions, 1448 flow [2022-11-18 20:09:07,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:09:07,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:09:07,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3494 transitions. [2022-11-18 20:09:07,041 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7597303761687323 [2022-11-18 20:09:07,041 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3494 transitions. [2022-11-18 20:09:07,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3494 transitions. [2022-11-18 20:09:07,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:09:07,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3494 transitions. [2022-11-18 20:09:07,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 166.38095238095238) internal successors, (3494), 21 states have internal predecessors, (3494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:07,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 219.0) internal successors, (4818), 22 states have internal predecessors, (4818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:07,056 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 219.0) internal successors, (4818), 22 states have internal predecessors, (4818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:07,056 INFO L175 Difference]: Start difference. First operand has 242 places, 212 transitions, 670 flow. Second operand 21 states and 3494 transitions. [2022-11-18 20:09:07,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 337 transitions, 1448 flow [2022-11-18 20:09:07,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 337 transitions, 1432 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:09:07,083 INFO L231 Difference]: Finished difference. Result has 261 places, 221 transitions, 778 flow [2022-11-18 20:09:07,084 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=778, PETRI_PLACES=261, PETRI_TRANSITIONS=221} [2022-11-18 20:09:07,084 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 70 predicate places. [2022-11-18 20:09:07,085 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 221 transitions, 778 flow [2022-11-18 20:09:07,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 162.61111111111111) internal successors, (2927), 18 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:07,086 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:07,086 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:07,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-18 20:09:07,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:09:07,292 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:09:07,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:07,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1445075780, now seen corresponding path program 1 times [2022-11-18 20:09:07,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:07,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664245488] [2022-11-18 20:09:07,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:07,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:07,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:07,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:07,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664245488] [2022-11-18 20:09:07,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664245488] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:09:07,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292818745] [2022-11-18 20:09:07,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:07,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:07,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:09:07,495 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:09:07,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:09:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:07,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:09:07,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:07,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:09:07,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:09:07,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292818745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:09:07,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:09:07,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-18 20:09:07,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065181937] [2022-11-18 20:09:07,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:09:07,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:09:07,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:07,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:09:07,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:09:07,775 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 219 [2022-11-18 20:09:07,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 221 transitions, 778 flow. Second operand has 6 states, 6 states have (on average 173.66666666666666) internal successors, (1042), 6 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:07,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:09:07,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 219 [2022-11-18 20:09:07,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:09:11,595 INFO L130 PetriNetUnfolder]: 4592/15503 cut-off events. [2022-11-18 20:09:11,595 INFO L131 PetriNetUnfolder]: For 6128/23030 co-relation queries the response was YES. [2022-11-18 20:09:11,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29476 conditions, 15503 events. 4592/15503 cut-off events. For 6128/23030 co-relation queries the response was YES. Maximal size of possible extension queue 822. Compared 186630 event pairs, 1291 based on Foata normal form. 305/13936 useless extension candidates. Maximal degree in co-relation 29394. Up to 3090 conditions per place. [2022-11-18 20:09:12,182 INFO L137 encePairwiseOnDemand]: 211/219 looper letters, 56 selfloop transitions, 13 changer transitions 5/250 dead transitions. [2022-11-18 20:09:12,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 250 transitions, 1038 flow [2022-11-18 20:09:12,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:09:12,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:09:12,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1246 transitions. [2022-11-18 20:09:12,184 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8127853881278538 [2022-11-18 20:09:12,185 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1246 transitions. [2022-11-18 20:09:12,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1246 transitions. [2022-11-18 20:09:12,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:09:12,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1246 transitions. [2022-11-18 20:09:12,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:12,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 219.0) internal successors, (1752), 8 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:12,190 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 219.0) internal successors, (1752), 8 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:12,190 INFO L175 Difference]: Start difference. First operand has 261 places, 221 transitions, 778 flow. Second operand 7 states and 1246 transitions. [2022-11-18 20:09:12,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 250 transitions, 1038 flow [2022-11-18 20:09:12,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 250 transitions, 998 flow, removed 3 selfloop flow, removed 13 redundant places. [2022-11-18 20:09:12,217 INFO L231 Difference]: Finished difference. Result has 253 places, 218 transitions, 756 flow [2022-11-18 20:09:12,217 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=756, PETRI_PLACES=253, PETRI_TRANSITIONS=218} [2022-11-18 20:09:12,218 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 62 predicate places. [2022-11-18 20:09:12,218 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 218 transitions, 756 flow [2022-11-18 20:09:12,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 173.66666666666666) internal successors, (1042), 6 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:12,219 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:12,219 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:12,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-18 20:09:12,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:12,424 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:09:12,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:12,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1626259074, now seen corresponding path program 1 times [2022-11-18 20:09:12,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:12,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402824726] [2022-11-18 20:09:12,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:12,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:12,577 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:12,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:12,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402824726] [2022-11-18 20:09:12,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402824726] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:09:12,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763600318] [2022-11-18 20:09:12,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:12,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:12,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:09:12,579 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:09:12,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:09:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:12,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:09:12,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:12,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:09:12,844 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:12,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763600318] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:09:12,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:09:12,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 20:09:12,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175142198] [2022-11-18 20:09:12,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:09:12,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:09:12,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:12,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:09:12,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:09:12,850 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 219 [2022-11-18 20:09:12,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 218 transitions, 756 flow. Second operand has 16 states, 16 states have (on average 190.5) internal successors, (3048), 16 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:12,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:09:12,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 219 [2022-11-18 20:09:12,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:09:16,041 INFO L130 PetriNetUnfolder]: 2502/10520 cut-off events. [2022-11-18 20:09:16,041 INFO L131 PetriNetUnfolder]: For 4500/5075 co-relation queries the response was YES. [2022-11-18 20:09:16,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20154 conditions, 10520 events. 2502/10520 cut-off events. For 4500/5075 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 125401 event pairs, 286 based on Foata normal form. 335/9455 useless extension candidates. Maximal degree in co-relation 20079. Up to 1445 conditions per place. [2022-11-18 20:09:16,206 INFO L137 encePairwiseOnDemand]: 211/219 looper letters, 103 selfloop transitions, 24 changer transitions 0/318 dead transitions. [2022-11-18 20:09:16,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 318 transitions, 1338 flow [2022-11-18 20:09:16,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:09:16,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 20:09:16,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3891 transitions. [2022-11-18 20:09:16,212 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8883561643835617 [2022-11-18 20:09:16,212 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3891 transitions. [2022-11-18 20:09:16,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3891 transitions. [2022-11-18 20:09:16,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:09:16,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3891 transitions. [2022-11-18 20:09:16,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 194.55) internal successors, (3891), 20 states have internal predecessors, (3891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:16,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 219.0) internal successors, (4599), 21 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:16,232 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 219.0) internal successors, (4599), 21 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:16,232 INFO L175 Difference]: Start difference. First operand has 253 places, 218 transitions, 756 flow. Second operand 20 states and 3891 transitions. [2022-11-18 20:09:16,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 318 transitions, 1338 flow [2022-11-18 20:09:16,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 318 transitions, 1312 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 20:09:16,257 INFO L231 Difference]: Finished difference. Result has 272 places, 233 transitions, 908 flow [2022-11-18 20:09:16,258 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=908, PETRI_PLACES=272, PETRI_TRANSITIONS=233} [2022-11-18 20:09:16,258 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 81 predicate places. [2022-11-18 20:09:16,258 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 233 transitions, 908 flow [2022-11-18 20:09:16,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.5) internal successors, (3048), 16 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:16,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:16,260 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:16,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:09:16,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:16,465 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:09:16,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:16,466 INFO L85 PathProgramCache]: Analyzing trace with hash -734715674, now seen corresponding path program 1 times [2022-11-18 20:09:16,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:16,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491220330] [2022-11-18 20:09:16,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:16,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:16,612 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:09:16,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:16,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491220330] [2022-11-18 20:09:16,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491220330] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:09:16,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769739224] [2022-11-18 20:09:16,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:16,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:16,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:09:16,614 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:09:16,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:09:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:16,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:09:16,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:09:16,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:09:16,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769739224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:09:16,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:09:16,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-18 20:09:16,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344684818] [2022-11-18 20:09:16,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:09:16,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:09:16,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:16,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:09:16,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:09:16,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 219 [2022-11-18 20:09:16,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 233 transitions, 908 flow. Second operand has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:16,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:09:16,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 219 [2022-11-18 20:09:16,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:09:18,516 INFO L130 PetriNetUnfolder]: 581/4296 cut-off events. [2022-11-18 20:09:18,516 INFO L131 PetriNetUnfolder]: For 1775/6000 co-relation queries the response was YES. [2022-11-18 20:09:18,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7848 conditions, 4296 events. 581/4296 cut-off events. For 1775/6000 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 41990 event pairs, 20 based on Foata normal form. 120/4124 useless extension candidates. Maximal degree in co-relation 7769. Up to 706 conditions per place. [2022-11-18 20:09:18,592 INFO L137 encePairwiseOnDemand]: 214/219 looper letters, 26 selfloop transitions, 7 changer transitions 0/234 dead transitions. [2022-11-18 20:09:18,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 234 transitions, 970 flow [2022-11-18 20:09:18,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:09:18,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:09:18,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 777 transitions. [2022-11-18 20:09:18,593 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.886986301369863 [2022-11-18 20:09:18,594 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 777 transitions. [2022-11-18 20:09:18,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 777 transitions. [2022-11-18 20:09:18,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:09:18,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 777 transitions. [2022-11-18 20:09:18,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 194.25) internal successors, (777), 4 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:18,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:18,597 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:18,597 INFO L175 Difference]: Start difference. First operand has 272 places, 233 transitions, 908 flow. Second operand 4 states and 777 transitions. [2022-11-18 20:09:18,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 234 transitions, 970 flow [2022-11-18 20:09:18,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 234 transitions, 906 flow, removed 23 selfloop flow, removed 9 redundant places. [2022-11-18 20:09:18,613 INFO L231 Difference]: Finished difference. Result has 264 places, 230 transitions, 840 flow [2022-11-18 20:09:18,614 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=840, PETRI_PLACES=264, PETRI_TRANSITIONS=230} [2022-11-18 20:09:18,614 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 73 predicate places. [2022-11-18 20:09:18,614 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 230 transitions, 840 flow [2022-11-18 20:09:18,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:18,615 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:18,615 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:18,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-18 20:09:18,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:18,823 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:09:18,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:18,824 INFO L85 PathProgramCache]: Analyzing trace with hash 156329635, now seen corresponding path program 1 times [2022-11-18 20:09:18,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:18,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739532896] [2022-11-18 20:09:18,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:18,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:09:18,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:18,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739532896] [2022-11-18 20:09:18,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739532896] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:09:18,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877745796] [2022-11-18 20:09:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:18,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:18,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:09:18,923 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:09:18,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:09:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:19,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:09:19,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:19,357 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:19,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:09:19,742 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:19,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877745796] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:09:19,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:09:19,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 27 [2022-11-18 20:09:19,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712004405] [2022-11-18 20:09:19,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:09:19,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 20:09:19,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:19,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 20:09:19,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:09:19,749 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 219 [2022-11-18 20:09:19,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 230 transitions, 840 flow. Second operand has 27 states, 27 states have (on average 161.88888888888889) internal successors, (4371), 27 states have internal predecessors, (4371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:19,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:09:19,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 219 [2022-11-18 20:09:19,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:09:24,876 INFO L130 PetriNetUnfolder]: 3292/11549 cut-off events. [2022-11-18 20:09:24,876 INFO L131 PetriNetUnfolder]: For 5300/172335 co-relation queries the response was YES. [2022-11-18 20:09:25,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23297 conditions, 11549 events. 3292/11549 cut-off events. For 5300/172335 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 124777 event pairs, 750 based on Foata normal form. 230/10528 useless extension candidates. Maximal degree in co-relation 23214. Up to 1284 conditions per place. [2022-11-18 20:09:25,686 INFO L137 encePairwiseOnDemand]: 202/219 looper letters, 243 selfloop transitions, 39 changer transitions 0/436 dead transitions. [2022-11-18 20:09:25,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 436 transitions, 2079 flow [2022-11-18 20:09:25,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:09:25,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:09:25,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5635 transitions. [2022-11-18 20:09:25,693 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7567821649207628 [2022-11-18 20:09:25,693 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5635 transitions. [2022-11-18 20:09:25,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5635 transitions. [2022-11-18 20:09:25,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:09:25,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5635 transitions. [2022-11-18 20:09:25,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 165.73529411764707) internal successors, (5635), 34 states have internal predecessors, (5635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:25,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 219.0) internal successors, (7665), 35 states have internal predecessors, (7665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:25,712 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 219.0) internal successors, (7665), 35 states have internal predecessors, (7665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:25,712 INFO L175 Difference]: Start difference. First operand has 264 places, 230 transitions, 840 flow. Second operand 34 states and 5635 transitions. [2022-11-18 20:09:25,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 436 transitions, 2079 flow [2022-11-18 20:09:25,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 436 transitions, 2055 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:09:25,738 INFO L231 Difference]: Finished difference. Result has 300 places, 240 transitions, 995 flow [2022-11-18 20:09:25,738 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=995, PETRI_PLACES=300, PETRI_TRANSITIONS=240} [2022-11-18 20:09:25,739 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 109 predicate places. [2022-11-18 20:09:25,739 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 240 transitions, 995 flow [2022-11-18 20:09:25,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 161.88888888888889) internal successors, (4371), 27 states have internal predecessors, (4371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:25,740 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:25,740 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:25,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-18 20:09:25,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:25,946 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:09:25,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:25,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1616155782, now seen corresponding path program 2 times [2022-11-18 20:09:25,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:25,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552796203] [2022-11-18 20:09:25,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:25,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:26,032 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-18 20:09:26,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:26,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552796203] [2022-11-18 20:09:26,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552796203] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:09:26,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486674963] [2022-11-18 20:09:26,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:09:26,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:26,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:09:26,034 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:09:26,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:09:26,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:09:26,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:09:26,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:09:26,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:26,170 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-18 20:09:26,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:09:26,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486674963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:09:26,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:09:26,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2022-11-18 20:09:26,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819877386] [2022-11-18 20:09:26,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:09:26,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:09:26,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:26,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:09:26,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:09:26,173 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 219 [2022-11-18 20:09:26,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 240 transitions, 995 flow. Second operand has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:26,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:09:26,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 219 [2022-11-18 20:09:26,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:09:30,891 INFO L130 PetriNetUnfolder]: 3123/13431 cut-off events. [2022-11-18 20:09:30,891 INFO L131 PetriNetUnfolder]: For 7451/130138 co-relation queries the response was YES. [2022-11-18 20:09:31,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25534 conditions, 13431 events. 3123/13431 cut-off events. For 7451/130138 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 156138 event pairs, 1566 based on Foata normal form. 98/12080 useless extension candidates. Maximal degree in co-relation 25444. Up to 3200 conditions per place. [2022-11-18 20:09:31,233 INFO L137 encePairwiseOnDemand]: 211/219 looper letters, 45 selfloop transitions, 18 changer transitions 0/260 dead transitions. [2022-11-18 20:09:31,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 260 transitions, 1216 flow [2022-11-18 20:09:31,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:09:31,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:09:31,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 940 transitions. [2022-11-18 20:09:31,235 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8584474885844748 [2022-11-18 20:09:31,235 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 940 transitions. [2022-11-18 20:09:31,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 940 transitions. [2022-11-18 20:09:31,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:09:31,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 940 transitions. [2022-11-18 20:09:31,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:31,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 219.0) internal successors, (1314), 6 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:31,238 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 219.0) internal successors, (1314), 6 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:31,238 INFO L175 Difference]: Start difference. First operand has 300 places, 240 transitions, 995 flow. Second operand 5 states and 940 transitions. [2022-11-18 20:09:31,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 260 transitions, 1216 flow [2022-11-18 20:09:31,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 260 transitions, 1150 flow, removed 6 selfloop flow, removed 18 redundant places. [2022-11-18 20:09:31,265 INFO L231 Difference]: Finished difference. Result has 286 places, 245 transitions, 1023 flow [2022-11-18 20:09:31,266 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1023, PETRI_PLACES=286, PETRI_TRANSITIONS=245} [2022-11-18 20:09:31,266 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 95 predicate places. [2022-11-18 20:09:31,266 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 245 transitions, 1023 flow [2022-11-18 20:09:31,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:31,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:31,267 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:31,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:09:31,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511fde7b-43d6-4f23-b0f5-c2d61da26d15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 20:09:31,472 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 20:09:31,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:31,473 INFO L85 PathProgramCache]: Analyzing trace with hash -195022049, now seen corresponding path program 2 times [2022-11-18 20:09:31,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:31,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400908682] [2022-11-18 20:09:31,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:31,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat