./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/test-context1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-context1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8 --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 a6c10414fe2617d00008bf9d366bc6ac1618cf93ea0f6ae08bc6c5a126364bce --- 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-2329fc7 [2022-12-13 17:57:06,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:57:06,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:57:06,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:57:06,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:57:06,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:57:06,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:57:06,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:57:06,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:57:06,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:57:06,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:57:06,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:57:06,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:57:06,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:57:06,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:57:06,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:57:06,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:57:06,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:57:06,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:57:06,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:57:06,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:57:06,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:57:06,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:57:06,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:57:06,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:57:06,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:57:06,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:57:06,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:57:06,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:57:06,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:57:06,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:57:06,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:57:06,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:57:06,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:57:06,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:57:06,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:57:06,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:57:06,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:57:06,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:57:06,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:57:06,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:57:06,130 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 17:57:06,149 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:57:06,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:57:06,149 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:57:06,149 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:57:06,150 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:57:06,150 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:57:06,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:57:06,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:57:06,157 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:57:06,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:57:06,157 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:57:06,157 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 17:57:06,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:57:06,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:57:06,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:57:06,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:57:06,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:57:06,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:57:06,159 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 17:57:06,159 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:57:06,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:57:06,159 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:57:06,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:57:06,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:57:06,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:57:06,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:57:06,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:57:06,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:57:06,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:57:06,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:57:06,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:57:06,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:57:06,161 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:57:06,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:57:06,162 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:57:06,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:57:06,162 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:57:06,162 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6c10414fe2617d00008bf9d366bc6ac1618cf93ea0f6ae08bc6c5a126364bce [2022-12-13 17:57:06,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:57:06,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:57:06,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:57:06,352 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:57:06,352 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:57:06,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/test-context1.wvr.c [2022-12-13 17:57:08,870 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:57:09,060 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:57:09,061 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/sv-benchmarks/c/weaver/test-context1.wvr.c [2022-12-13 17:57:09,066 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/data/185eb256b/70cfe34017c14b2da676a356233b2cc9/FLAGb37208db9 [2022-12-13 17:57:09,459 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/data/185eb256b/70cfe34017c14b2da676a356233b2cc9 [2022-12-13 17:57:09,461 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:57:09,462 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:57:09,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:57:09,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:57:09,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:57:09,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:57:09" (1/1) ... [2022-12-13 17:57:09,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bcbf740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:57:09, skipping insertion in model container [2022-12-13 17:57:09,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:57:09" (1/1) ... [2022-12-13 17:57:09,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:57:09,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:57:09,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:57:09,614 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:57:09,617 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:57:09,618 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:57:09,623 WARN L237 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_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/sv-benchmarks/c/weaver/test-context1.wvr.c[2433,2446] [2022-12-13 17:57:09,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:57:09,635 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:57:09,645 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:57:09,646 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:57:09,647 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:57:09,648 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:57:09,651 WARN L237 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_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/sv-benchmarks/c/weaver/test-context1.wvr.c[2433,2446] [2022-12-13 17:57:09,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:57:09,664 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:57:09,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:57:09 WrapperNode [2022-12-13 17:57:09,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:57:09,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:57:09,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:57:09,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:57:09,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:57:09" (1/1) ... [2022-12-13 17:57:09,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:57:09" (1/1) ... [2022-12-13 17:57:09,696 INFO L138 Inliner]: procedures = 24, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 149 [2022-12-13 17:57:09,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:57:09,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:57:09,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:57:09,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:57:09,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:57:09" (1/1) ... [2022-12-13 17:57:09,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:57:09" (1/1) ... [2022-12-13 17:57:09,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:57:09" (1/1) ... [2022-12-13 17:57:09,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:57:09" (1/1) ... [2022-12-13 17:57:09,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:57:09" (1/1) ... [2022-12-13 17:57:09,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:57:09" (1/1) ... [2022-12-13 17:57:09,720 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:57:09" (1/1) ... [2022-12-13 17:57:09,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:57:09" (1/1) ... [2022-12-13 17:57:09,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:57:09,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:57:09,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:57:09,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:57:09,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:57:09" (1/1) ... [2022-12-13 17:57:09,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:57:09,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:57:09,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:57:09,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:57:09,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:57:09,784 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 17:57:09,784 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 17:57:09,785 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 17:57:09,785 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 17:57:09,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:57:09,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:57:09,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:57:09,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 17:57:09,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 17:57:09,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 17:57:09,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:57:09,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:57:09,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 17:57:09,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:57:09,787 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 17:57:09,866 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:57:09,868 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:57:10,075 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:57:10,230 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:57:10,230 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 17:57:10,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:57:10 BoogieIcfgContainer [2022-12-13 17:57:10,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:57:10,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:57:10,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:57:10,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:57:10,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:57:09" (1/3) ... [2022-12-13 17:57:10,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@142909e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:57:10, skipping insertion in model container [2022-12-13 17:57:10,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:57:09" (2/3) ... [2022-12-13 17:57:10,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@142909e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:57:10, skipping insertion in model container [2022-12-13 17:57:10,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:57:10" (3/3) ... [2022-12-13 17:57:10,239 INFO L112 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2022-12-13 17:57:10,245 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 17:57:10,253 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:57:10,253 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-12-13 17:57:10,253 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 17:57:10,302 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 17:57:10,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 131 transitions, 278 flow [2022-12-13 17:57:10,364 INFO L130 PetriNetUnfolder]: 9/129 cut-off events. [2022-12-13 17:57:10,364 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 17:57:10,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 129 events. 9/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 137 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-12-13 17:57:10,368 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 131 transitions, 278 flow [2022-12-13 17:57:10,371 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 110 transitions, 229 flow [2022-12-13 17:57:10,374 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:57:10,381 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 110 transitions, 229 flow [2022-12-13 17:57:10,383 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 110 transitions, 229 flow [2022-12-13 17:57:10,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 110 transitions, 229 flow [2022-12-13 17:57:10,402 INFO L130 PetriNetUnfolder]: 8/110 cut-off events. [2022-12-13 17:57:10,402 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 17:57:10,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 110 events. 8/110 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 129 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-12-13 17:57:10,403 INFO L119 LiptonReduction]: Number of co-enabled transitions 816 [2022-12-13 17:57:14,240 INFO L134 LiptonReduction]: Checked pairs total: 1126 [2022-12-13 17:57:14,241 INFO L136 LiptonReduction]: Total number of compositions: 122 [2022-12-13 17:57:14,251 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:57:14,255 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;@355a7521, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:57:14,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-12-13 17:57:14,257 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2022-12-13 17:57:14,257 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:57:14,257 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:57:14,258 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 17:57:14,258 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-13 17:57:14,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:57:14,262 INFO L85 PathProgramCache]: Analyzing trace with hash 21176, now seen corresponding path program 1 times [2022-12-13 17:57:14,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:57:14,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726314379] [2022-12-13 17:57:14,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:14,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:57:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:14,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:57:14,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:57:14,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726314379] [2022-12-13 17:57:14,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726314379] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:57:14,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:57:14,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:57:14,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246329148] [2022-12-13 17:57:14,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:57:14,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:57:14,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:57:14,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:57:14,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:57:14,481 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 253 [2022-12-13 17:57:14,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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) [2022-12-13 17:57:14,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:57:14,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 253 [2022-12-13 17:57:14,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:57:14,596 INFO L130 PetriNetUnfolder]: 187/329 cut-off events. [2022-12-13 17:57:14,596 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-12-13 17:57:14,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 329 events. 187/329 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1279 event pairs, 138 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 300. Up to 167 conditions per place. [2022-12-13 17:57:14,600 INFO L137 encePairwiseOnDemand]: 243/253 looper letters, 37 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2022-12-13 17:57:14,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 39 transitions, 174 flow [2022-12-13 17:57:14,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:57:14,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:57:14,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 365 transitions. [2022-12-13 17:57:14,610 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48089591567852435 [2022-12-13 17:57:14,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 365 transitions. [2022-12-13 17:57:14,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 365 transitions. [2022-12-13 17:57:14,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:57:14,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 365 transitions. [2022-12-13 17:57:14,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 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) [2022-12-13 17:57:14,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2022-12-13 17:57:14,620 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2022-12-13 17:57:14,621 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 63 flow. Second operand 3 states and 365 transitions. [2022-12-13 17:57:14,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 39 transitions, 174 flow [2022-12-13 17:57:14,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 39 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 17:57:14,625 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 60 flow [2022-12-13 17:57:14,627 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=25, PETRI_TRANSITIONS=22} [2022-12-13 17:57:14,629 INFO L288 CegarLoopForPetriNet]: 31 programPoint places, -6 predicate places. [2022-12-13 17:57:14,629 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 60 flow [2022-12-13 17:57:14,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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) [2022-12-13 17:57:14,630 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:57:14,630 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:57:14,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:57:14,630 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-13 17:57:14,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:57:14,631 INFO L85 PathProgramCache]: Analyzing trace with hash 657048, now seen corresponding path program 1 times [2022-12-13 17:57:14,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:57:14,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208199377] [2022-12-13 17:57:14,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:14,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:57:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:57:14,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:57:14,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208199377] [2022-12-13 17:57:14,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208199377] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:57:14,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375219495] [2022-12-13 17:57:14,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:14,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:57:14,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:57:14,701 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:57:14,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:57:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:14,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:57:14,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:57:14,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:57:14,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:57:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:57:14,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375219495] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:57:14,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:57:14,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 17:57:14,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604206113] [2022-12-13 17:57:14,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:57:14,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:57:14,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:57:14,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:57:14,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:57:14,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 253 [2022-12-13 17:57:14,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 60 flow. Second operand has 7 states, 7 states have (on average 105.14285714285714) internal successors, (736), 7 states have internal predecessors, (736), 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) [2022-12-13 17:57:14,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:57:14,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 253 [2022-12-13 17:57:14,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:57:15,070 INFO L130 PetriNetUnfolder]: 469/821 cut-off events. [2022-12-13 17:57:15,070 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-12-13 17:57:15,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1723 conditions, 821 events. 469/821 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3694 event pairs, 345 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 1375. Up to 166 conditions per place. [2022-12-13 17:57:15,075 INFO L137 encePairwiseOnDemand]: 249/253 looper letters, 87 selfloop transitions, 9 changer transitions 0/96 dead transitions. [2022-12-13 17:57:15,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 96 transitions, 428 flow [2022-12-13 17:57:15,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:57:15,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 17:57:15,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 827 transitions. [2022-12-13 17:57:15,080 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46696781479390176 [2022-12-13 17:57:15,080 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 827 transitions. [2022-12-13 17:57:15,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 827 transitions. [2022-12-13 17:57:15,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:57:15,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 827 transitions. [2022-12-13 17:57:15,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 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) [2022-12-13 17:57:15,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 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) [2022-12-13 17:57:15,089 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 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) [2022-12-13 17:57:15,089 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 60 flow. Second operand 7 states and 827 transitions. [2022-12-13 17:57:15,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 96 transitions, 428 flow [2022-12-13 17:57:15,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 96 transitions, 426 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:57:15,091 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 117 flow [2022-12-13 17:57:15,092 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=117, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2022-12-13 17:57:15,092 INFO L288 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2022-12-13 17:57:15,092 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 117 flow [2022-12-13 17:57:15,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.14285714285714) internal successors, (736), 7 states have internal predecessors, (736), 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) [2022-12-13 17:57:15,093 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:57:15,093 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2022-12-13 17:57:15,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:57:15,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:57:15,294 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-13 17:57:15,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:57:15,295 INFO L85 PathProgramCache]: Analyzing trace with hash 20369078, now seen corresponding path program 1 times [2022-12-13 17:57:15,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:57:15,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001924965] [2022-12-13 17:57:15,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:15,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:57:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:15,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:57:15,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:57:15,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001924965] [2022-12-13 17:57:15,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001924965] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:57:15,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:57:15,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:57:15,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320965148] [2022-12-13 17:57:15,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:57:15,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:57:15,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:57:15,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:57:15,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:57:15,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 253 [2022-12-13 17:57:15,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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) [2022-12-13 17:57:15,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:57:15,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 253 [2022-12-13 17:57:15,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:57:15,462 INFO L130 PetriNetUnfolder]: 466/817 cut-off events. [2022-12-13 17:57:15,462 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 17:57:15,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1725 conditions, 817 events. 466/817 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3869 event pairs, 345 based on Foata normal form. 2/359 useless extension candidates. Maximal degree in co-relation 1025. Up to 817 conditions per place. [2022-12-13 17:57:15,466 INFO L137 encePairwiseOnDemand]: 251/253 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2022-12-13 17:57:15,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 138 flow [2022-12-13 17:57:15,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:57:15,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:57:15,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2022-12-13 17:57:15,468 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43873517786561267 [2022-12-13 17:57:15,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2022-12-13 17:57:15,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2022-12-13 17:57:15,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:57:15,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2022-12-13 17:57:15,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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) [2022-12-13 17:57:15,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2022-12-13 17:57:15,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2022-12-13 17:57:15,472 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 117 flow. Second operand 3 states and 333 transitions. [2022-12-13 17:57:15,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 138 flow [2022-12-13 17:57:15,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 130 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 17:57:15,474 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 84 flow [2022-12-13 17:57:15,474 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2022-12-13 17:57:15,475 INFO L288 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2022-12-13 17:57:15,475 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 84 flow [2022-12-13 17:57:15,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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) [2022-12-13 17:57:15,475 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:57:15,476 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 17:57:15,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 17:57:15,476 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-13 17:57:15,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:57:15,477 INFO L85 PathProgramCache]: Analyzing trace with hash 20368319, now seen corresponding path program 1 times [2022-12-13 17:57:15,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:57:15,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387874175] [2022-12-13 17:57:15,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:15,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:57:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:57:15,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:57:15,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387874175] [2022-12-13 17:57:15,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387874175] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:57:15,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:57:15,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:57:15,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148257095] [2022-12-13 17:57:15,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:57:15,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:57:15,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:57:15,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:57:15,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:57:15,539 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 253 [2022-12-13 17:57:15,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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) [2022-12-13 17:57:15,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:57:15,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 253 [2022-12-13 17:57:15,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:57:15,660 INFO L130 PetriNetUnfolder]: 536/967 cut-off events. [2022-12-13 17:57:15,660 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-12-13 17:57:15,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2043 conditions, 967 events. 536/967 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5199 event pairs, 165 based on Foata normal form. 0/477 useless extension candidates. Maximal degree in co-relation 2031. Up to 831 conditions per place. [2022-12-13 17:57:15,663 INFO L137 encePairwiseOnDemand]: 244/253 looper letters, 27 selfloop transitions, 2 changer transitions 3/32 dead transitions. [2022-12-13 17:57:15,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 167 flow [2022-12-13 17:57:15,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:57:15,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:57:15,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2022-12-13 17:57:15,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4650856389986825 [2022-12-13 17:57:15,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2022-12-13 17:57:15,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2022-12-13 17:57:15,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:57:15,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2022-12-13 17:57:15,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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) [2022-12-13 17:57:15,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2022-12-13 17:57:15,666 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2022-12-13 17:57:15,666 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 84 flow. Second operand 3 states and 353 transitions. [2022-12-13 17:57:15,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 167 flow [2022-12-13 17:57:15,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:57:15,667 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 107 flow [2022-12-13 17:57:15,667 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2022-12-13 17:57:15,668 INFO L288 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2022-12-13 17:57:15,668 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 107 flow [2022-12-13 17:57:15,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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) [2022-12-13 17:57:15,668 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:57:15,668 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 17:57:15,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 17:57:15,669 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-13 17:57:15,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:57:15,669 INFO L85 PathProgramCache]: Analyzing trace with hash 631418371, now seen corresponding path program 1 times [2022-12-13 17:57:15,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:57:15,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332285530] [2022-12-13 17:57:15,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:15,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:57:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:15,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:57:15,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:57:15,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332285530] [2022-12-13 17:57:15,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332285530] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:57:15,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274272450] [2022-12-13 17:57:15,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:15,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:57:15,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:57:15,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:57:15,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:57:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:15,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:57:15,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:57:15,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:57:15,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:57:15,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274272450] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:57:15,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:57:15,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2022-12-13 17:57:15,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649099011] [2022-12-13 17:57:15,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:57:15,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:57:15,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:57:15,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:57:15,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:57:15,873 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 253 [2022-12-13 17:57:15,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 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) [2022-12-13 17:57:15,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:57:15,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 253 [2022-12-13 17:57:15,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:57:16,025 INFO L130 PetriNetUnfolder]: 438/801 cut-off events. [2022-12-13 17:57:16,025 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2022-12-13 17:57:16,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2117 conditions, 801 events. 438/801 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3957 event pairs, 341 based on Foata normal form. 6/535 useless extension candidates. Maximal degree in co-relation 2103. Up to 775 conditions per place. [2022-12-13 17:57:16,031 INFO L137 encePairwiseOnDemand]: 249/253 looper letters, 23 selfloop transitions, 2 changer transitions 9/34 dead transitions. [2022-12-13 17:57:16,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 34 transitions, 197 flow [2022-12-13 17:57:16,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:57:16,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:57:16,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 431 transitions. [2022-12-13 17:57:16,033 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4258893280632411 [2022-12-13 17:57:16,033 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 431 transitions. [2022-12-13 17:57:16,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 431 transitions. [2022-12-13 17:57:16,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:57:16,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 431 transitions. [2022-12-13 17:57:16,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 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) [2022-12-13 17:57:16,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 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) [2022-12-13 17:57:16,037 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 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) [2022-12-13 17:57:16,038 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 107 flow. Second operand 4 states and 431 transitions. [2022-12-13 17:57:16,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 34 transitions, 197 flow [2022-12-13 17:57:16,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:57:16,040 INFO L231 Difference]: Finished difference. Result has 38 places, 25 transitions, 115 flow [2022-12-13 17:57:16,040 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=38, PETRI_TRANSITIONS=25} [2022-12-13 17:57:16,041 INFO L288 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2022-12-13 17:57:16,041 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 25 transitions, 115 flow [2022-12-13 17:57:16,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 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) [2022-12-13 17:57:16,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:57:16,041 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 17:57:16,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 17:57:16,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:57:16,242 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-13 17:57:16,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:57:16,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1900155357, now seen corresponding path program 1 times [2022-12-13 17:57:16,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:57:16,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142048153] [2022-12-13 17:57:16,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:16,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:57:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:16,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:57:16,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:57:16,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142048153] [2022-12-13 17:57:16,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142048153] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:57:16,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408168364] [2022-12-13 17:57:16,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:16,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:57:16,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:57:16,293 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:57:16,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:57:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:16,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:57:16,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:57:16,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:57:16,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:57:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:57:16,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408168364] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:57:16,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:57:16,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-12-13 17:57:16,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493530432] [2022-12-13 17:57:16,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:57:16,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:57:16,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:57:16,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:57:16,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:57:16,403 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 253 [2022-12-13 17:57:16,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 25 transitions, 115 flow. Second operand has 8 states, 8 states have (on average 106.25) internal successors, (850), 8 states have internal predecessors, (850), 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) [2022-12-13 17:57:16,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:57:16,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 253 [2022-12-13 17:57:16,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:57:16,654 INFO L130 PetriNetUnfolder]: 805/1415 cut-off events. [2022-12-13 17:57:16,654 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2022-12-13 17:57:16,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3701 conditions, 1415 events. 805/1415 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7652 event pairs, 84 based on Foata normal form. 8/1031 useless extension candidates. Maximal degree in co-relation 3684. Up to 673 conditions per place. [2022-12-13 17:57:16,659 INFO L137 encePairwiseOnDemand]: 244/253 looper letters, 47 selfloop transitions, 11 changer transitions 12/70 dead transitions. [2022-12-13 17:57:16,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 70 transitions, 385 flow [2022-12-13 17:57:16,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:57:16,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 17:57:16,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 808 transitions. [2022-12-13 17:57:16,663 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4562394127611519 [2022-12-13 17:57:16,663 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 808 transitions. [2022-12-13 17:57:16,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 808 transitions. [2022-12-13 17:57:16,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:57:16,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 808 transitions. [2022-12-13 17:57:16,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 115.42857142857143) internal successors, (808), 7 states have internal predecessors, (808), 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) [2022-12-13 17:57:16,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 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) [2022-12-13 17:57:16,669 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 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) [2022-12-13 17:57:16,669 INFO L175 Difference]: Start difference. First operand has 38 places, 25 transitions, 115 flow. Second operand 7 states and 808 transitions. [2022-12-13 17:57:16,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 70 transitions, 385 flow [2022-12-13 17:57:16,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 70 transitions, 377 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-13 17:57:16,672 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 223 flow [2022-12-13 17:57:16,672 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=223, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2022-12-13 17:57:16,672 INFO L288 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2022-12-13 17:57:16,673 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 223 flow [2022-12-13 17:57:16,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 106.25) internal successors, (850), 8 states have internal predecessors, (850), 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) [2022-12-13 17:57:16,673 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:57:16,673 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 17:57:16,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:57:16,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:57:16,874 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-13 17:57:16,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:57:16,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1900155356, now seen corresponding path program 1 times [2022-12-13 17:57:16,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:57:16,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630632751] [2022-12-13 17:57:16,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:16,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:57:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:16,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:57:16,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:57:16,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630632751] [2022-12-13 17:57:16,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630632751] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:57:16,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497725423] [2022-12-13 17:57:16,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:16,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:57:16,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:57:16,932 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:57:16,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:57:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:17,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:57:17,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:57:17,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:57:17,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:57:17,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497725423] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:57:17,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:57:17,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-12-13 17:57:17,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631102014] [2022-12-13 17:57:17,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:57:17,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:57:17,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:57:17,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:57:17,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:57:17,042 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 253 [2022-12-13 17:57:17,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 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) [2022-12-13 17:57:17,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:57:17,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 253 [2022-12-13 17:57:17,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:57:17,222 INFO L130 PetriNetUnfolder]: 941/1615 cut-off events. [2022-12-13 17:57:17,222 INFO L131 PetriNetUnfolder]: For 2596/2596 co-relation queries the response was YES. [2022-12-13 17:57:17,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5767 conditions, 1615 events. 941/1615 cut-off events. For 2596/2596 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8593 event pairs, 204 based on Foata normal form. 160/1711 useless extension candidates. Maximal degree in co-relation 5746. Up to 1008 conditions per place. [2022-12-13 17:57:17,228 INFO L137 encePairwiseOnDemand]: 245/253 looper letters, 33 selfloop transitions, 11 changer transitions 0/44 dead transitions. [2022-12-13 17:57:17,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 362 flow [2022-12-13 17:57:17,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:57:17,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:57:17,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2022-12-13 17:57:17,229 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44960474308300397 [2022-12-13 17:57:17,229 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 455 transitions. [2022-12-13 17:57:17,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 455 transitions. [2022-12-13 17:57:17,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:57:17,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 455 transitions. [2022-12-13 17:57:17,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 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) [2022-12-13 17:57:17,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 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) [2022-12-13 17:57:17,231 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 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) [2022-12-13 17:57:17,231 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 223 flow. Second operand 4 states and 455 transitions. [2022-12-13 17:57:17,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 362 flow [2022-12-13 17:57:17,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 344 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-12-13 17:57:17,235 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 288 flow [2022-12-13 17:57:17,235 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2022-12-13 17:57:17,235 INFO L288 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2022-12-13 17:57:17,236 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 288 flow [2022-12-13 17:57:17,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 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) [2022-12-13 17:57:17,236 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:57:17,236 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 17:57:17,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 17:57:17,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 17:57:17,436 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-13 17:57:17,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:57:17,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1900131656, now seen corresponding path program 2 times [2022-12-13 17:57:17,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:57:17,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932523983] [2022-12-13 17:57:17,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:17,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:57:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:17,498 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:57:17,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:57:17,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932523983] [2022-12-13 17:57:17,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932523983] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:57:17,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903424405] [2022-12-13 17:57:17,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:57:17,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:57:17,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:57:17,500 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:57:17,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:57:17,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 17:57:17,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:57:17,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:57:17,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:57:17,567 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 17:57:17,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:57:17,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903424405] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:57:17,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:57:17,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 17:57:17,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323719363] [2022-12-13 17:57:17,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:57:17,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:57:17,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:57:17,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:57:17,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:57:17,578 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 253 [2022-12-13 17:57:17,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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) [2022-12-13 17:57:17,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:57:17,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 253 [2022-12-13 17:57:17,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:57:17,738 INFO L130 PetriNetUnfolder]: 941/1614 cut-off events. [2022-12-13 17:57:17,738 INFO L131 PetriNetUnfolder]: For 3464/3464 co-relation queries the response was YES. [2022-12-13 17:57:17,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6339 conditions, 1614 events. 941/1614 cut-off events. For 3464/3464 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 8431 event pairs, 596 based on Foata normal form. 1/1551 useless extension candidates. Maximal degree in co-relation 6316. Up to 1614 conditions per place. [2022-12-13 17:57:17,745 INFO L137 encePairwiseOnDemand]: 251/253 looper letters, 34 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2022-12-13 17:57:17,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 35 transitions, 348 flow [2022-12-13 17:57:17,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:57:17,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:57:17,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2022-12-13 17:57:17,747 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43873517786561267 [2022-12-13 17:57:17,747 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2022-12-13 17:57:17,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2022-12-13 17:57:17,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:57:17,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2022-12-13 17:57:17,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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) [2022-12-13 17:57:17,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2022-12-13 17:57:17,749 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2022-12-13 17:57:17,749 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 288 flow. Second operand 3 states and 333 transitions. [2022-12-13 17:57:17,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 35 transitions, 348 flow [2022-12-13 17:57:17,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 35 transitions, 337 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-12-13 17:57:17,752 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 269 flow [2022-12-13 17:57:17,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2022-12-13 17:57:17,753 INFO L288 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2022-12-13 17:57:17,753 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 269 flow [2022-12-13 17:57:17,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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) [2022-12-13 17:57:17,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:57:17,753 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-12-13 17:57:17,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 17:57:17,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 17:57:17,955 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-13 17:57:17,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:57:17,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1224726562, now seen corresponding path program 1 times [2022-12-13 17:57:17,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:57:17,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491096833] [2022-12-13 17:57:17,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:17,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:57:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:18,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:57:18,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:57:18,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491096833] [2022-12-13 17:57:18,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491096833] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:57:18,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112240175] [2022-12-13 17:57:18,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:18,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:57:18,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:57:18,173 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:57:18,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:57:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:18,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 17:57:18,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:57:18,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:57:18,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:57:18,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:57:18,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112240175] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:57:18,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:57:18,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-12-13 17:57:18,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168057172] [2022-12-13 17:57:18,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:57:18,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 17:57:18,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:57:18,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 17:57:18,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:57:18,418 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 253 [2022-12-13 17:57:18,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 269 flow. Second operand has 14 states, 14 states have (on average 97.35714285714286) internal successors, (1363), 14 states have internal predecessors, (1363), 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) [2022-12-13 17:57:18,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:57:18,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 253 [2022-12-13 17:57:18,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:57:18,645 INFO L130 PetriNetUnfolder]: 747/1298 cut-off events. [2022-12-13 17:57:18,645 INFO L131 PetriNetUnfolder]: For 2768/2768 co-relation queries the response was YES. [2022-12-13 17:57:18,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5005 conditions, 1298 events. 747/1298 cut-off events. For 2768/2768 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6470 event pairs, 456 based on Foata normal form. 14/1264 useless extension candidates. Maximal degree in co-relation 4985. Up to 1211 conditions per place. [2022-12-13 17:57:18,651 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 32 selfloop transitions, 3 changer transitions 24/59 dead transitions. [2022-12-13 17:57:18,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 467 flow [2022-12-13 17:57:18,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:57:18,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 17:57:18,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 718 transitions. [2022-12-13 17:57:18,653 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4054206662902315 [2022-12-13 17:57:18,653 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 718 transitions. [2022-12-13 17:57:18,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 718 transitions. [2022-12-13 17:57:18,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:57:18,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 718 transitions. [2022-12-13 17:57:18,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 102.57142857142857) internal successors, (718), 7 states have internal predecessors, (718), 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) [2022-12-13 17:57:18,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 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) [2022-12-13 17:57:18,656 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 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) [2022-12-13 17:57:18,657 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 269 flow. Second operand 7 states and 718 transitions. [2022-12-13 17:57:18,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 467 flow [2022-12-13 17:57:18,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 59 transitions, 466 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:57:18,659 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 288 flow [2022-12-13 17:57:18,659 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=288, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2022-12-13 17:57:18,659 INFO L288 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2022-12-13 17:57:18,660 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 288 flow [2022-12-13 17:57:18,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 97.35714285714286) internal successors, (1363), 14 states have internal predecessors, (1363), 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) [2022-12-13 17:57:18,660 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:57:18,660 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2022-12-13 17:57:18,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 17:57:18,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:57:18,862 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-13 17:57:18,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:57:18,863 INFO L85 PathProgramCache]: Analyzing trace with hash -666136510, now seen corresponding path program 2 times [2022-12-13 17:57:18,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:57:18,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922426754] [2022-12-13 17:57:18,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:18,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:57:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 17:57:18,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:57:18,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922426754] [2022-12-13 17:57:18,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922426754] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:57:18,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528980567] [2022-12-13 17:57:18,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:57:18,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:57:18,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:57:18,972 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:57:18,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 17:57:19,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 17:57:19,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:57:19,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 17:57:19,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:57:19,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 17:57:19,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:57:19,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528980567] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:57:19,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:57:19,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-12-13 17:57:19,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369125739] [2022-12-13 17:57:19,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:57:19,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:57:19,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:57:19,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:57:19,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:57:19,076 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 253 [2022-12-13 17:57:19,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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) [2022-12-13 17:57:19,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:57:19,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 253 [2022-12-13 17:57:19,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:57:19,182 INFO L130 PetriNetUnfolder]: 529/939 cut-off events. [2022-12-13 17:57:19,182 INFO L131 PetriNetUnfolder]: For 2555/2555 co-relation queries the response was YES. [2022-12-13 17:57:19,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3442 conditions, 939 events. 529/939 cut-off events. For 2555/2555 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4515 event pairs, 366 based on Foata normal form. 96/1035 useless extension candidates. Maximal degree in co-relation 3417. Up to 939 conditions per place. [2022-12-13 17:57:19,185 INFO L137 encePairwiseOnDemand]: 250/253 looper letters, 28 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2022-12-13 17:57:19,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 29 transitions, 274 flow [2022-12-13 17:57:19,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:57:19,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:57:19,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 335 transitions. [2022-12-13 17:57:19,187 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4413702239789196 [2022-12-13 17:57:19,187 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 335 transitions. [2022-12-13 17:57:19,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 335 transitions. [2022-12-13 17:57:19,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:57:19,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 335 transitions. [2022-12-13 17:57:19,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2022-12-13 17:57:19,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2022-12-13 17:57:19,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2022-12-13 17:57:19,188 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 288 flow. Second operand 3 states and 335 transitions. [2022-12-13 17:57:19,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 29 transitions, 274 flow [2022-12-13 17:57:19,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 29 transitions, 255 flow, removed 5 selfloop flow, removed 7 redundant places. [2022-12-13 17:57:19,190 INFO L231 Difference]: Finished difference. Result has 40 places, 29 transitions, 199 flow [2022-12-13 17:57:19,191 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2022-12-13 17:57:19,191 INFO L288 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2022-12-13 17:57:19,191 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 199 flow [2022-12-13 17:57:19,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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) [2022-12-13 17:57:19,191 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:57:19,191 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1] [2022-12-13 17:57:19,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 17:57:19,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:57:19,393 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-13 17:57:19,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:57:19,394 INFO L85 PathProgramCache]: Analyzing trace with hash -207046465, now seen corresponding path program 2 times [2022-12-13 17:57:19,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:57:19,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471849668] [2022-12-13 17:57:19,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:19,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:57:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:57:19,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:57:19,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471849668] [2022-12-13 17:57:19,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471849668] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:57:19,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63088631] [2022-12-13 17:57:19,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:57:19,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:57:19,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:57:19,570 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:57:19,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 17:57:19,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:57:19,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:57:19,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 17:57:19,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:57:19,753 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:57:19,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:57:19,846 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:57:19,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63088631] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:57:19,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:57:19,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2022-12-13 17:57:19,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81743519] [2022-12-13 17:57:19,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:57:19,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 17:57:19,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:57:19,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 17:57:19,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2022-12-13 17:57:19,974 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 253 [2022-12-13 17:57:19,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 199 flow. Second operand has 20 states, 20 states have (on average 97.3) internal successors, (1946), 20 states have internal predecessors, (1946), 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) [2022-12-13 17:57:19,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:57:19,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 253 [2022-12-13 17:57:19,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:57:20,307 INFO L130 PetriNetUnfolder]: 466/850 cut-off events. [2022-12-13 17:57:20,308 INFO L131 PetriNetUnfolder]: For 1612/1612 co-relation queries the response was YES. [2022-12-13 17:57:20,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2917 conditions, 850 events. 466/850 cut-off events. For 1612/1612 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4138 event pairs, 253 based on Foata normal form. 22/872 useless extension candidates. Maximal degree in co-relation 2896. Up to 626 conditions per place. [2022-12-13 17:57:20,312 INFO L137 encePairwiseOnDemand]: 248/253 looper letters, 25 selfloop transitions, 4 changer transitions 47/76 dead transitions. [2022-12-13 17:57:20,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 76 transitions, 526 flow [2022-12-13 17:57:20,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 17:57:20,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 17:57:20,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1123 transitions. [2022-12-13 17:57:20,315 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4035213798059648 [2022-12-13 17:57:20,315 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1123 transitions. [2022-12-13 17:57:20,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1123 transitions. [2022-12-13 17:57:20,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:57:20,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1123 transitions. [2022-12-13 17:57:20,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 102.0909090909091) internal successors, (1123), 11 states have internal predecessors, (1123), 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) [2022-12-13 17:57:20,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 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) [2022-12-13 17:57:20,319 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 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) [2022-12-13 17:57:20,319 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 199 flow. Second operand 11 states and 1123 transitions. [2022-12-13 17:57:20,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 76 transitions, 526 flow [2022-12-13 17:57:20,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 76 transitions, 525 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:57:20,321 INFO L231 Difference]: Finished difference. Result has 56 places, 29 transitions, 234 flow [2022-12-13 17:57:20,321 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=234, PETRI_PLACES=56, PETRI_TRANSITIONS=29} [2022-12-13 17:57:20,321 INFO L288 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2022-12-13 17:57:20,321 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 29 transitions, 234 flow [2022-12-13 17:57:20,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 97.3) internal successors, (1946), 20 states have internal predecessors, (1946), 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) [2022-12-13 17:57:20,322 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:57:20,322 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1] [2022-12-13 17:57:20,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 17:57:20,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 17:57:20,524 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-13 17:57:20,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:57:20,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1882229919, now seen corresponding path program 3 times [2022-12-13 17:57:20,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:57:20,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303662417] [2022-12-13 17:57:20,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:20,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:57:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:20,638 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 17:57:20,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:57:20,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303662417] [2022-12-13 17:57:20,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303662417] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:57:20,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431719511] [2022-12-13 17:57:20,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 17:57:20,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:57:20,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:57:20,639 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:57:20,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 17:57:20,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 17:57:20,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:57:20,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:57:20,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:57:20,740 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 17:57:20,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:57:20,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431719511] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:57:20,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:57:20,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2022-12-13 17:57:20,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677675018] [2022-12-13 17:57:20,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:57:20,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:57:20,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:57:20,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:57:20,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:57:20,745 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 253 [2022-12-13 17:57:20,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 29 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 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) [2022-12-13 17:57:20,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:57:20,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 253 [2022-12-13 17:57:20,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:57:20,844 INFO L130 PetriNetUnfolder]: 413/732 cut-off events. [2022-12-13 17:57:20,844 INFO L131 PetriNetUnfolder]: For 2428/2428 co-relation queries the response was YES. [2022-12-13 17:57:20,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2880 conditions, 732 events. 413/732 cut-off events. For 2428/2428 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3322 event pairs, 174 based on Foata normal form. 24/756 useless extension candidates. Maximal degree in co-relation 2851. Up to 423 conditions per place. [2022-12-13 17:57:20,847 INFO L137 encePairwiseOnDemand]: 249/253 looper letters, 33 selfloop transitions, 3 changer transitions 1/37 dead transitions. [2022-12-13 17:57:20,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 37 transitions, 352 flow [2022-12-13 17:57:20,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:57:20,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:57:20,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 339 transitions. [2022-12-13 17:57:20,848 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44664031620553357 [2022-12-13 17:57:20,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 339 transitions. [2022-12-13 17:57:20,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 339 transitions. [2022-12-13 17:57:20,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:57:20,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 339 transitions. [2022-12-13 17:57:20,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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) [2022-12-13 17:57:20,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2022-12-13 17:57:20,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2022-12-13 17:57:20,850 INFO L175 Difference]: Start difference. First operand has 56 places, 29 transitions, 234 flow. Second operand 3 states and 339 transitions. [2022-12-13 17:57:20,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 37 transitions, 352 flow [2022-12-13 17:57:20,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 37 transitions, 312 flow, removed 16 selfloop flow, removed 10 redundant places. [2022-12-13 17:57:20,852 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 225 flow [2022-12-13 17:57:20,853 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2022-12-13 17:57:20,853 INFO L288 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2022-12-13 17:57:20,853 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 225 flow [2022-12-13 17:57:20,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 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) [2022-12-13 17:57:20,853 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:57:20,853 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:57:20,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 17:57:21,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:57:21,055 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-13 17:57:21,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:57:21,056 INFO L85 PathProgramCache]: Analyzing trace with hash -642267870, now seen corresponding path program 1 times [2022-12-13 17:57:21,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:57:21,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269978367] [2022-12-13 17:57:21,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:21,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:57:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:21,182 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 17:57:21,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:57:21,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269978367] [2022-12-13 17:57:21,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269978367] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:57:21,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:57:21,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:57:21,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050092502] [2022-12-13 17:57:21,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:57:21,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:57:21,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:57:21,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:57:21,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:57:21,187 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 253 [2022-12-13 17:57:21,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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) [2022-12-13 17:57:21,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:57:21,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 253 [2022-12-13 17:57:21,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:57:21,271 INFO L130 PetriNetUnfolder]: 375/678 cut-off events. [2022-12-13 17:57:21,271 INFO L131 PetriNetUnfolder]: For 1842/1842 co-relation queries the response was YES. [2022-12-13 17:57:21,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2431 conditions, 678 events. 375/678 cut-off events. For 1842/1842 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3077 event pairs, 258 based on Foata normal form. 32/710 useless extension candidates. Maximal degree in co-relation 2407. Up to 678 conditions per place. [2022-12-13 17:57:21,273 INFO L137 encePairwiseOnDemand]: 251/253 looper letters, 24 selfloop transitions, 1 changer transitions 3/28 dead transitions. [2022-12-13 17:57:21,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 28 transitions, 253 flow [2022-12-13 17:57:21,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:57:21,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:57:21,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2022-12-13 17:57:21,275 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43873517786561267 [2022-12-13 17:57:21,275 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2022-12-13 17:57:21,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2022-12-13 17:57:21,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:57:21,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2022-12-13 17:57:21,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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) [2022-12-13 17:57:21,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2022-12-13 17:57:21,276 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2022-12-13 17:57:21,276 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 225 flow. Second operand 3 states and 333 transitions. [2022-12-13 17:57:21,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 28 transitions, 253 flow [2022-12-13 17:57:21,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 28 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:57:21,278 INFO L231 Difference]: Finished difference. Result has 43 places, 25 transitions, 189 flow [2022-12-13 17:57:21,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=43, PETRI_TRANSITIONS=25} [2022-12-13 17:57:21,278 INFO L288 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2022-12-13 17:57:21,278 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 25 transitions, 189 flow [2022-12-13 17:57:21,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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) [2022-12-13 17:57:21,279 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:57:21,279 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:57:21,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 17:57:21,279 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-13 17:57:21,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:57:21,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1585336101, now seen corresponding path program 1 times [2022-12-13 17:57:21,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:57:21,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040617311] [2022-12-13 17:57:21,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:21,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:57:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:21,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 17:57:21,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:57:21,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040617311] [2022-12-13 17:57:21,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040617311] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:57:21,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897450181] [2022-12-13 17:57:21,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:21,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:57:21,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:57:21,366 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:57:21,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 17:57:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:21,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 17:57:21,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:57:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 17:57:21,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:57:21,566 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 17:57:21,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897450181] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:57:21,566 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:57:21,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 14 [2022-12-13 17:57:21,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723384852] [2022-12-13 17:57:21,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:57:21,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 17:57:21,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:57:21,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 17:57:21,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=126, Unknown=0, NotChecked=0, Total=240 [2022-12-13 17:57:21,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 253 [2022-12-13 17:57:21,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 25 transitions, 189 flow. Second operand has 16 states, 16 states have (on average 106.0625) internal successors, (1697), 16 states have internal predecessors, (1697), 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) [2022-12-13 17:57:21,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:57:21,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 253 [2022-12-13 17:57:21,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:57:21,773 INFO L130 PetriNetUnfolder]: 391/674 cut-off events. [2022-12-13 17:57:21,773 INFO L131 PetriNetUnfolder]: For 1774/1774 co-relation queries the response was YES. [2022-12-13 17:57:21,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2912 conditions, 674 events. 391/674 cut-off events. For 1774/1774 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2743 event pairs, 6 based on Foata normal form. 92/766 useless extension candidates. Maximal degree in co-relation 2887. Up to 373 conditions per place. [2022-12-13 17:57:21,779 INFO L137 encePairwiseOnDemand]: 249/253 looper letters, 70 selfloop transitions, 25 changer transitions 3/98 dead transitions. [2022-12-13 17:57:21,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 98 transitions, 815 flow [2022-12-13 17:57:21,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 17:57:21,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 17:57:21,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1536 transitions. [2022-12-13 17:57:21,781 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43365330321852064 [2022-12-13 17:57:21,782 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1536 transitions. [2022-12-13 17:57:21,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1536 transitions. [2022-12-13 17:57:21,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:57:21,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1536 transitions. [2022-12-13 17:57:21,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.71428571428571) internal successors, (1536), 14 states have internal predecessors, (1536), 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) [2022-12-13 17:57:21,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 253.0) internal successors, (3795), 15 states have internal predecessors, (3795), 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) [2022-12-13 17:57:21,787 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 253.0) internal successors, (3795), 15 states have internal predecessors, (3795), 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) [2022-12-13 17:57:21,787 INFO L175 Difference]: Start difference. First operand has 43 places, 25 transitions, 189 flow. Second operand 14 states and 1536 transitions. [2022-12-13 17:57:21,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 98 transitions, 815 flow [2022-12-13 17:57:21,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 98 transitions, 798 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-12-13 17:57:21,790 INFO L231 Difference]: Finished difference. Result has 61 places, 42 transitions, 450 flow [2022-12-13 17:57:21,790 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=450, PETRI_PLACES=61, PETRI_TRANSITIONS=42} [2022-12-13 17:57:21,790 INFO L288 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2022-12-13 17:57:21,790 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 450 flow [2022-12-13 17:57:21,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 106.0625) internal successors, (1697), 16 states have internal predecessors, (1697), 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) [2022-12-13 17:57:21,791 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:57:21,791 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:57:21,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 17:57:21,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 17:57:21,992 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-13 17:57:21,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:57:21,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1656215081, now seen corresponding path program 2 times [2022-12-13 17:57:21,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:57:21,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513608564] [2022-12-13 17:57:21,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:21,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:57:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:22,133 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 17:57:22,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:57:22,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513608564] [2022-12-13 17:57:22,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513608564] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:57:22,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848154728] [2022-12-13 17:57:22,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:57:22,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:57:22,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:57:22,134 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:57:22,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 17:57:22,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:57:22,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:57:22,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 17:57:22,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:57:22,354 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 17:57:22,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:57:22,475 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 17:57:22,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848154728] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:57:22,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:57:22,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 24 [2022-12-13 17:57:22,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788969271] [2022-12-13 17:57:22,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:57:22,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 17:57:22,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:57:22,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 17:57:22,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2022-12-13 17:57:22,718 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 253 [2022-12-13 17:57:22,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 450 flow. Second operand has 25 states, 25 states have (on average 97.6) internal successors, (2440), 25 states have internal predecessors, (2440), 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) [2022-12-13 17:57:22,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:57:22,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 253 [2022-12-13 17:57:22,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:57:23,139 INFO L130 PetriNetUnfolder]: 267/492 cut-off events. [2022-12-13 17:57:23,139 INFO L131 PetriNetUnfolder]: For 1950/1950 co-relation queries the response was YES. [2022-12-13 17:57:23,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2460 conditions, 492 events. 267/492 cut-off events. For 1950/1950 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1928 event pairs, 20 based on Foata normal form. 42/534 useless extension candidates. Maximal degree in co-relation 2425. Up to 309 conditions per place. [2022-12-13 17:57:23,141 INFO L137 encePairwiseOnDemand]: 248/253 looper letters, 41 selfloop transitions, 8 changer transitions 51/100 dead transitions. [2022-12-13 17:57:23,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 100 transitions, 996 flow [2022-12-13 17:57:23,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 17:57:23,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-13 17:57:23,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1802 transitions. [2022-12-13 17:57:23,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3956960913482653 [2022-12-13 17:57:23,145 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1802 transitions. [2022-12-13 17:57:23,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1802 transitions. [2022-12-13 17:57:23,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:57:23,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1802 transitions. [2022-12-13 17:57:23,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 100.11111111111111) internal successors, (1802), 18 states have internal predecessors, (1802), 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) [2022-12-13 17:57:23,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 253.0) internal successors, (4807), 19 states have internal predecessors, (4807), 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) [2022-12-13 17:57:23,156 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 253.0) internal successors, (4807), 19 states have internal predecessors, (4807), 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) [2022-12-13 17:57:23,156 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 450 flow. Second operand 18 states and 1802 transitions. [2022-12-13 17:57:23,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 100 transitions, 996 flow [2022-12-13 17:57:23,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 100 transitions, 887 flow, removed 50 selfloop flow, removed 2 redundant places. [2022-12-13 17:57:23,166 INFO L231 Difference]: Finished difference. Result has 85 places, 42 transitions, 441 flow [2022-12-13 17:57:23,166 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=441, PETRI_PLACES=85, PETRI_TRANSITIONS=42} [2022-12-13 17:57:23,166 INFO L288 CegarLoopForPetriNet]: 31 programPoint places, 54 predicate places. [2022-12-13 17:57:23,166 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 42 transitions, 441 flow [2022-12-13 17:57:23,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 97.6) internal successors, (2440), 25 states have internal predecessors, (2440), 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) [2022-12-13 17:57:23,168 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:57:23,168 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:57:23,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 17:57:23,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 17:57:23,369 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-12-13 17:57:23,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:57:23,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1952593399, now seen corresponding path program 3 times [2022-12-13 17:57:23,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:57:23,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317858095] [2022-12-13 17:57:23,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:23,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:57:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:23,582 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 17:57:23,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:57:23,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317858095] [2022-12-13 17:57:23,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317858095] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:57:23,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845912695] [2022-12-13 17:57:23,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 17:57:23,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:57:23,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:57:23,584 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:57:23,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 17:57:23,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 17:57:23,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:57:23,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:57:23,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:57:23,690 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 17:57:23,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:57:23,719 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 17:57:23,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845912695] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:57:23,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:57:23,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2, 2] total 10 [2022-12-13 17:57:23,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891590930] [2022-12-13 17:57:23,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:57:23,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 17:57:23,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:57:23,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 17:57:23,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-13 17:57:23,780 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 253 [2022-12-13 17:57:23,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 42 transitions, 441 flow. Second operand has 12 states, 12 states have (on average 99.0) internal successors, (1188), 12 states have internal predecessors, (1188), 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) [2022-12-13 17:57:23,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:57:23,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 253 [2022-12-13 17:57:23,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:57:23,952 INFO L130 PetriNetUnfolder]: 367/635 cut-off events. [2022-12-13 17:57:23,953 INFO L131 PetriNetUnfolder]: For 3602/3602 co-relation queries the response was YES. [2022-12-13 17:57:23,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3266 conditions, 635 events. 367/635 cut-off events. For 3602/3602 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2524 event pairs, 120 based on Foata normal form. 16/651 useless extension candidates. Maximal degree in co-relation 3221. Up to 314 conditions per place. [2022-12-13 17:57:23,954 INFO L137 encePairwiseOnDemand]: 248/253 looper letters, 0 selfloop transitions, 0 changer transitions 85/85 dead transitions. [2022-12-13 17:57:23,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 85 transitions, 980 flow [2022-12-13 17:57:23,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 17:57:23,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 17:57:23,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1103 transitions. [2022-12-13 17:57:23,956 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39633489040603664 [2022-12-13 17:57:23,956 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1103 transitions. [2022-12-13 17:57:23,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1103 transitions. [2022-12-13 17:57:23,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:57:23,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1103 transitions. [2022-12-13 17:57:23,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 100.27272727272727) internal successors, (1103), 11 states have internal predecessors, (1103), 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) [2022-12-13 17:57:23,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 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) [2022-12-13 17:57:23,960 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 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) [2022-12-13 17:57:23,960 INFO L175 Difference]: Start difference. First operand has 85 places, 42 transitions, 441 flow. Second operand 11 states and 1103 transitions. [2022-12-13 17:57:23,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 85 transitions, 980 flow [2022-12-13 17:57:23,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 85 transitions, 746 flow, removed 67 selfloop flow, removed 21 redundant places. [2022-12-13 17:57:23,972 INFO L231 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2022-12-13 17:57:23,972 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=63, PETRI_TRANSITIONS=0} [2022-12-13 17:57:23,973 INFO L288 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2022-12-13 17:57:23,973 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2022-12-13 17:57:23,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 99.0) internal successors, (1188), 12 states have internal predecessors, (1188), 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) [2022-12-13 17:57:23,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 28 remaining) [2022-12-13 17:57:23,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 28 remaining) [2022-12-13 17:57:23,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 28 remaining) [2022-12-13 17:57:23,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 28 remaining) [2022-12-13 17:57:23,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 28 remaining) [2022-12-13 17:57:23,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 28 remaining) [2022-12-13 17:57:23,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 28 remaining) [2022-12-13 17:57:23,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 28 remaining) [2022-12-13 17:57:23,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 28 remaining) [2022-12-13 17:57:23,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 28 remaining) [2022-12-13 17:57:23,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 28 remaining) [2022-12-13 17:57:23,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 28 remaining) [2022-12-13 17:57:23,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 28 remaining) [2022-12-13 17:57:23,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 28 remaining) [2022-12-13 17:57:23,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 28 remaining) [2022-12-13 17:57:23,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 28 remaining) [2022-12-13 17:57:23,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 28 remaining) [2022-12-13 17:57:23,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 28 remaining) [2022-12-13 17:57:23,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 28 remaining) [2022-12-13 17:57:23,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 28 remaining) [2022-12-13 17:57:23,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 28 remaining) [2022-12-13 17:57:23,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 28 remaining) [2022-12-13 17:57:23,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 28 remaining) [2022-12-13 17:57:23,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 28 remaining) [2022-12-13 17:57:23,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 28 remaining) [2022-12-13 17:57:23,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 28 remaining) [2022-12-13 17:57:23,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 28 remaining) [2022-12-13 17:57:23,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 28 remaining) [2022-12-13 17:57:23,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 17:57:24,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 17:57:24,181 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 17:57:24,195 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 17:57:24,195 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 17:57:24,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 05:57:24 BasicIcfg [2022-12-13 17:57:24,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 17:57:24,204 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 17:57:24,204 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 17:57:24,205 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 17:57:24,206 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:57:10" (3/4) ... [2022-12-13 17:57:24,212 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 17:57:24,221 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 17:57:24,221 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 17:57:24,225 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-12-13 17:57:24,225 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 17:57:24,226 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 17:57:24,226 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 17:57:24,251 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 17:57:24,251 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 17:57:24,251 INFO L158 Benchmark]: Toolchain (without parser) took 14789.16ms. Allocated memory was 111.1MB in the beginning and 161.5MB in the end (delta: 50.3MB). Free memory was 76.5MB in the beginning and 68.8MB in the end (delta: 7.7MB). Peak memory consumption was 60.3MB. Max. memory is 16.1GB. [2022-12-13 17:57:24,251 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 111.1MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:57:24,252 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.21ms. Allocated memory is still 111.1MB. Free memory was 76.5MB in the beginning and 64.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 17:57:24,252 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.13ms. Allocated memory is still 111.1MB. Free memory was 64.8MB in the beginning and 62.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 17:57:24,252 INFO L158 Benchmark]: Boogie Preprocessor took 26.10ms. Allocated memory is still 111.1MB. Free memory was 62.8MB in the beginning and 61.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:57:24,252 INFO L158 Benchmark]: RCFGBuilder took 508.34ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 61.2MB in the beginning and 91.7MB in the end (delta: -30.5MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2022-12-13 17:57:24,252 INFO L158 Benchmark]: TraceAbstraction took 13969.01ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 91.0MB in the beginning and 71.9MB in the end (delta: 19.1MB). Peak memory consumption was 84.1MB. Max. memory is 16.1GB. [2022-12-13 17:57:24,252 INFO L158 Benchmark]: Witness Printer took 46.75ms. Allocated memory is still 161.5MB. Free memory was 71.9MB in the beginning and 68.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 17:57:24,254 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 111.1MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 202.21ms. Allocated memory is still 111.1MB. Free memory was 76.5MB in the beginning and 64.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.13ms. Allocated memory is still 111.1MB. Free memory was 64.8MB in the beginning and 62.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.10ms. Allocated memory is still 111.1MB. Free memory was 62.8MB in the beginning and 61.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 508.34ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 61.2MB in the beginning and 91.7MB in the end (delta: -30.5MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. * TraceAbstraction took 13969.01ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 91.0MB in the beginning and 71.9MB in the end (delta: 19.1MB). Peak memory consumption was 84.1MB. Max. memory is 16.1GB. * Witness Printer took 46.75ms. Allocated memory is still 161.5MB. Free memory was 71.9MB in the beginning and 68.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 109 PlacesBefore, 31 PlacesAfterwards, 110 TransitionsBefore, 27 TransitionsAfterwards, 816 CoEnabledTransitionPairs, 7 FixpointIterations, 66 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 122 TotalNumberOfCompositions, 1126 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1080, independent: 1073, independent conditional: 0, independent unconditional: 1073, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 403, independent: 400, independent conditional: 0, independent unconditional: 400, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1080, independent: 673, independent conditional: 0, independent unconditional: 673, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 403, unknown conditional: 0, unknown unconditional: 403] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 151 locations, 28 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 13.9s, OverallIterations: 16, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1374 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1214 mSDsluCounter, 479 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 441 mSDsCounter, 215 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2748 IncrementalHoareTripleChecker+Invalid, 2963 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 215 mSolverCounterUnsat, 38 mSDtfsCounter, 2748 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 265 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=450occurred in iteration=14, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 248 NumberOfCodeBlocks, 229 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 289 ConstructedInterpolants, 0 QuantifiedInterpolants, 1578 SizeOfPredicates, 25 NumberOfNonLiveVariables, 1857 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 35 InterpolantComputations, 9 PerfectInterpolantSequences, 308/446 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 17:57:24,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe0a995-4149-47fe-8ba0-94e1ccd5caf6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE