/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:55:08,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:55:08,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:55:08,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:55:08,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:55:08,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:55:08,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:55:08,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:55:08,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:55:08,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:55:08,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:55:08,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:55:08,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:55:08,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:55:08,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:55:08,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:55:08,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:55:08,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:55:08,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:55:08,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:55:08,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:55:08,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:55:08,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:55:08,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:55:08,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:55:08,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:55:08,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:55:08,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:55:08,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:55:08,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:55:08,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:55:08,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:55:08,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:55:08,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:55:08,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:55:08,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:55:08,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:55:08,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:55:08,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:55:08,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:55:08,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:55:08,488 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:55:08,505 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:55:08,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:55:08,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:55:08,506 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:55:08,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:55:08,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:55:08,506 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:55:08,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:55:08,506 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:55:08,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:55:08,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:55:08,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:55:08,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:55:08,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:55:08,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:55:08,507 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:55:08,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:55:08,507 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:55:08,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:55:08,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:55:08,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:55:08,508 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:55:08,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:55:08,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:55:08,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:55:08,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:55:08,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:55:08,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:55:08,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:55:08,509 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:55:08,509 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:55:08,509 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:55:08,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:55:08,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:55:08,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:55:08,717 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:55:08,719 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:55:08,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c [2022-09-16 11:55:08,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2257d8865/af8b344599724dafb58be82c345d3be7/FLAGf1b65339e [2022-09-16 11:55:09,114 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:55:09,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c [2022-09-16 11:55:09,127 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2257d8865/af8b344599724dafb58be82c345d3be7/FLAGf1b65339e [2022-09-16 11:55:09,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2257d8865/af8b344599724dafb58be82c345d3be7 [2022-09-16 11:55:09,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:55:09,541 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:55:09,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:55:09,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:55:09,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:55:09,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:55:09" (1/1) ... [2022-09-16 11:55:09,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9981b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:09, skipping insertion in model container [2022-09-16 11:55:09,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:55:09" (1/1) ... [2022-09-16 11:55:09,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:55:09,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:55:09,783 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c[2507,2520] [2022-09-16 11:55:09,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:55:09,792 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:55:09,822 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c[2507,2520] [2022-09-16 11:55:09,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:55:09,834 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:55:09,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:09 WrapperNode [2022-09-16 11:55:09,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:55:09,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:55:09,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:55:09,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:55:09,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:09" (1/1) ... [2022-09-16 11:55:09,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:09" (1/1) ... [2022-09-16 11:55:09,875 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 128 [2022-09-16 11:55:09,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:55:09,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:55:09,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:55:09,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:55:09,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:09" (1/1) ... [2022-09-16 11:55:09,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:09" (1/1) ... [2022-09-16 11:55:09,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:09" (1/1) ... [2022-09-16 11:55:09,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:09" (1/1) ... [2022-09-16 11:55:09,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:09" (1/1) ... [2022-09-16 11:55:09,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:09" (1/1) ... [2022-09-16 11:55:09,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:09" (1/1) ... [2022-09-16 11:55:09,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:55:09,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:55:09,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:55:09,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:55:09,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:09" (1/1) ... [2022-09-16 11:55:09,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:55:09,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:09,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-16 11:55:09,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-16 11:55:09,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:55:09,967 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:55:09,967 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:55:09,967 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:55:09,967 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:55:09,967 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:55:09,967 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:55:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-16 11:55:09,968 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-16 11:55:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:55:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:55:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:55:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:55:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:55:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:55:09,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:55:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:55:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:55:09,970 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:55:10,074 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:55:10,075 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:55:10,298 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:55:10,355 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:55:10,355 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-16 11:55:10,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:55:10 BoogieIcfgContainer [2022-09-16 11:55:10,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:55:10,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:55:10,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:55:10,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:55:10,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:55:09" (1/3) ... [2022-09-16 11:55:10,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7a3fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:55:10, skipping insertion in model container [2022-09-16 11:55:10,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:55:09" (2/3) ... [2022-09-16 11:55:10,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7a3fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:55:10, skipping insertion in model container [2022-09-16 11:55:10,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:55:10" (3/3) ... [2022-09-16 11:55:10,363 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2022-09-16 11:55:10,375 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:55:10,375 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-09-16 11:55:10,375 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:55:10,436 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-16 11:55:10,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 151 transitions, 334 flow [2022-09-16 11:55:10,526 INFO L130 PetriNetUnfolder]: 9/147 cut-off events. [2022-09-16 11:55:10,526 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-16 11:55:10,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 147 events. 9/147 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 191 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-09-16 11:55:10,535 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 151 transitions, 334 flow [2022-09-16 11:55:10,540 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 124 transitions, 269 flow [2022-09-16 11:55:10,548 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:55:10,556 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=false, 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;@53a9a234, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:55:10,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-09-16 11:55:10,571 INFO L130 PetriNetUnfolder]: 1/36 cut-off events. [2022-09-16 11:55:10,572 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:55:10,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:10,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:10,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:10,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:10,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1668384648, now seen corresponding path program 1 times [2022-09-16 11:55:10,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:10,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447664037] [2022-09-16 11:55:10,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:10,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:10,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:10,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:10,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447664037] [2022-09-16 11:55:10,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447664037] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:10,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:10,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:55:10,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593062277] [2022-09-16 11:55:10,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:10,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:55:10,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:10,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:55:10,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:55:10,832 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 151 [2022-09-16 11:55:10,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 124 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:10,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:10,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 151 [2022-09-16 11:55:10,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:11,204 INFO L130 PetriNetUnfolder]: 795/2231 cut-off events. [2022-09-16 11:55:11,205 INFO L131 PetriNetUnfolder]: For 343/344 co-relation queries the response was YES. [2022-09-16 11:55:11,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3489 conditions, 2231 events. 795/2231 cut-off events. For 343/344 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 17026 event pairs, 137 based on Foata normal form. 398/1743 useless extension candidates. Maximal degree in co-relation 3209. Up to 908 conditions per place. [2022-09-16 11:55:11,228 INFO L137 encePairwiseOnDemand]: 139/151 looper letters, 28 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2022-09-16 11:55:11,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 130 transitions, 359 flow [2022-09-16 11:55:11,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:55:11,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:55:11,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 415 transitions. [2022-09-16 11:55:11,242 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9161147902869757 [2022-09-16 11:55:11,243 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 415 transitions. [2022-09-16 11:55:11,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 415 transitions. [2022-09-16 11:55:11,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:11,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 415 transitions. [2022-09-16 11:55:11,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:11,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:11,256 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:11,257 INFO L175 Difference]: Start difference. First operand has 129 places, 124 transitions, 269 flow. Second operand 3 states and 415 transitions. [2022-09-16 11:55:11,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 130 transitions, 359 flow [2022-09-16 11:55:11,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 130 transitions, 335 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-16 11:55:11,267 INFO L231 Difference]: Finished difference. Result has 123 places, 119 transitions, 262 flow [2022-09-16 11:55:11,269 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=123, PETRI_TRANSITIONS=119} [2022-09-16 11:55:11,272 INFO L287 CegarLoopForPetriNet]: 129 programPoint places, -6 predicate places. [2022-09-16 11:55:11,273 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 119 transitions, 262 flow [2022-09-16 11:55:11,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:11,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:11,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:11,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:55:11,274 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:11,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:11,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1294830726, now seen corresponding path program 1 times [2022-09-16 11:55:11,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:11,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733212352] [2022-09-16 11:55:11,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:11,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:11,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:11,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:11,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733212352] [2022-09-16 11:55:11,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733212352] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:11,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:11,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:55:11,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200218403] [2022-09-16 11:55:11,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:11,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:55:11,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:11,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:55:11,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:55:11,327 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 151 [2022-09-16 11:55:11,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 119 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:11,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:11,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 151 [2022-09-16 11:55:11,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:12,045 INFO L130 PetriNetUnfolder]: 3366/7182 cut-off events. [2022-09-16 11:55:12,046 INFO L131 PetriNetUnfolder]: For 743/755 co-relation queries the response was YES. [2022-09-16 11:55:12,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13442 conditions, 7182 events. 3366/7182 cut-off events. For 743/755 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 59582 event pairs, 1104 based on Foata normal form. 1/4259 useless extension candidates. Maximal degree in co-relation 9608. Up to 3019 conditions per place. [2022-09-16 11:55:12,148 INFO L137 encePairwiseOnDemand]: 145/151 looper letters, 64 selfloop transitions, 4 changer transitions 0/159 dead transitions. [2022-09-16 11:55:12,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 159 transitions, 505 flow [2022-09-16 11:55:12,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:55:12,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:55:12,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 645 transitions. [2022-09-16 11:55:12,150 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8543046357615894 [2022-09-16 11:55:12,150 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 645 transitions. [2022-09-16 11:55:12,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 645 transitions. [2022-09-16 11:55:12,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:12,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 645 transitions. [2022-09-16 11:55:12,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:12,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:12,153 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:12,154 INFO L175 Difference]: Start difference. First operand has 123 places, 119 transitions, 262 flow. Second operand 5 states and 645 transitions. [2022-09-16 11:55:12,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 159 transitions, 505 flow [2022-09-16 11:55:12,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 159 transitions, 503 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:55:12,156 INFO L231 Difference]: Finished difference. Result has 129 places, 122 transitions, 290 flow [2022-09-16 11:55:12,157 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=290, PETRI_PLACES=129, PETRI_TRANSITIONS=122} [2022-09-16 11:55:12,157 INFO L287 CegarLoopForPetriNet]: 129 programPoint places, 0 predicate places. [2022-09-16 11:55:12,157 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 122 transitions, 290 flow [2022-09-16 11:55:12,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:12,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:12,158 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:12,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:55:12,158 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:12,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:12,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1746367031, now seen corresponding path program 1 times [2022-09-16 11:55:12,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:12,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736935145] [2022-09-16 11:55:12,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:12,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:12,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:12,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736935145] [2022-09-16 11:55:12,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736935145] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:12,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:12,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:55:12,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710081103] [2022-09-16 11:55:12,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:12,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:55:12,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:12,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:55:12,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:55:12,196 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 151 [2022-09-16 11:55:12,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 122 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:12,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:12,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 151 [2022-09-16 11:55:12,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:12,386 INFO L130 PetriNetUnfolder]: 752/2122 cut-off events. [2022-09-16 11:55:12,386 INFO L131 PetriNetUnfolder]: For 288/355 co-relation queries the response was YES. [2022-09-16 11:55:12,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3693 conditions, 2122 events. 752/2122 cut-off events. For 288/355 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 16270 event pairs, 435 based on Foata normal form. 0/1282 useless extension candidates. Maximal degree in co-relation 2747. Up to 994 conditions per place. [2022-09-16 11:55:12,403 INFO L137 encePairwiseOnDemand]: 149/151 looper letters, 17 selfloop transitions, 1 changer transitions 0/121 dead transitions. [2022-09-16 11:55:12,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 121 transitions, 322 flow [2022-09-16 11:55:12,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:55:12,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:55:12,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2022-09-16 11:55:12,405 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8543046357615894 [2022-09-16 11:55:12,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2022-09-16 11:55:12,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2022-09-16 11:55:12,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:12,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2022-09-16 11:55:12,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:12,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:12,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:12,407 INFO L175 Difference]: Start difference. First operand has 129 places, 122 transitions, 290 flow. Second operand 3 states and 387 transitions. [2022-09-16 11:55:12,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 121 transitions, 322 flow [2022-09-16 11:55:12,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 121 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:55:12,410 INFO L231 Difference]: Finished difference. Result has 129 places, 121 transitions, 286 flow [2022-09-16 11:55:12,410 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=129, PETRI_TRANSITIONS=121} [2022-09-16 11:55:12,410 INFO L287 CegarLoopForPetriNet]: 129 programPoint places, 0 predicate places. [2022-09-16 11:55:12,411 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 121 transitions, 286 flow [2022-09-16 11:55:12,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:12,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:12,411 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:12,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:55:12,411 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:12,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:12,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1746367030, now seen corresponding path program 1 times [2022-09-16 11:55:12,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:12,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758966741] [2022-09-16 11:55:12,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:12,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:12,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:12,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:12,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758966741] [2022-09-16 11:55:12,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758966741] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:12,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872891205] [2022-09-16 11:55:12,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:12,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:12,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:12,456 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:55:12,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:55:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:12,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:55:12,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:12,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:12,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:55:12,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:12,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872891205] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:55:12,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:55:12,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-09-16 11:55:12,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388856750] [2022-09-16 11:55:12,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:55:12,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:55:12,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:12,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:55:12,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:55:12,613 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 151 [2022-09-16 11:55:12,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 121 transitions, 286 flow. Second operand has 7 states, 7 states have (on average 124.57142857142857) internal successors, (872), 7 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:12,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:12,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 151 [2022-09-16 11:55:12,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:13,015 INFO L130 PetriNetUnfolder]: 1427/4399 cut-off events. [2022-09-16 11:55:13,015 INFO L131 PetriNetUnfolder]: For 699/784 co-relation queries the response was YES. [2022-09-16 11:55:13,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7694 conditions, 4399 events. 1427/4399 cut-off events. For 699/784 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 38984 event pairs, 172 based on Foata normal form. 29/3304 useless extension candidates. Maximal degree in co-relation 7673. Up to 702 conditions per place. [2022-09-16 11:55:13,051 INFO L137 encePairwiseOnDemand]: 146/151 looper letters, 61 selfloop transitions, 8 changer transitions 0/172 dead transitions. [2022-09-16 11:55:13,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 172 transitions, 568 flow [2022-09-16 11:55:13,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:55:13,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:55:13,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 815 transitions. [2022-09-16 11:55:13,054 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8995584988962473 [2022-09-16 11:55:13,054 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 815 transitions. [2022-09-16 11:55:13,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 815 transitions. [2022-09-16 11:55:13,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:13,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 815 transitions. [2022-09-16 11:55:13,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 135.83333333333334) internal successors, (815), 6 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:13,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 151.0) internal successors, (1057), 7 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:13,057 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 151.0) internal successors, (1057), 7 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:13,057 INFO L175 Difference]: Start difference. First operand has 129 places, 121 transitions, 286 flow. Second operand 6 states and 815 transitions. [2022-09-16 11:55:13,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 172 transitions, 568 flow [2022-09-16 11:55:13,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 172 transitions, 567 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:55:13,096 INFO L231 Difference]: Finished difference. Result has 137 places, 127 transitions, 363 flow [2022-09-16 11:55:13,097 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=363, PETRI_PLACES=137, PETRI_TRANSITIONS=127} [2022-09-16 11:55:13,097 INFO L287 CegarLoopForPetriNet]: 129 programPoint places, 8 predicate places. [2022-09-16 11:55:13,097 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 127 transitions, 363 flow [2022-09-16 11:55:13,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 124.57142857142857) internal successors, (872), 7 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:13,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:13,098 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:13,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:55:13,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:13,299 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:13,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:13,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1073481351, now seen corresponding path program 1 times [2022-09-16 11:55:13,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:13,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805903096] [2022-09-16 11:55:13,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:13,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:13,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:13,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805903096] [2022-09-16 11:55:13,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805903096] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:13,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697818337] [2022-09-16 11:55:13,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:13,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:13,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:13,395 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:55:13,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:55:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:13,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:55:13,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:13,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:13,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:55:13,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:13,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697818337] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:55:13,541 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:55:13,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:55:13,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496616509] [2022-09-16 11:55:13,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:55:13,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:55:13,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:13,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:55:13,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:55:13,544 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 151 [2022-09-16 11:55:13,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 127 transitions, 363 flow. Second operand has 12 states, 12 states have (on average 117.66666666666667) internal successors, (1412), 12 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:13,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:13,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 151 [2022-09-16 11:55:13,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:16,121 INFO L130 PetriNetUnfolder]: 11408/21347 cut-off events. [2022-09-16 11:55:16,122 INFO L131 PetriNetUnfolder]: For 30087/30490 co-relation queries the response was YES. [2022-09-16 11:55:16,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53880 conditions, 21347 events. 11408/21347 cut-off events. For 30087/30490 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 178271 event pairs, 1656 based on Foata normal form. 355/15466 useless extension candidates. Maximal degree in co-relation 53855. Up to 3720 conditions per place. [2022-09-16 11:55:16,435 INFO L137 encePairwiseOnDemand]: 144/151 looper letters, 237 selfloop transitions, 18 changer transitions 0/346 dead transitions. [2022-09-16 11:55:16,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 346 transitions, 1766 flow [2022-09-16 11:55:16,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:55:16,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:55:16,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2294 transitions. [2022-09-16 11:55:16,440 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8440029433406917 [2022-09-16 11:55:16,440 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2294 transitions. [2022-09-16 11:55:16,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2294 transitions. [2022-09-16 11:55:16,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:16,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2294 transitions. [2022-09-16 11:55:16,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 127.44444444444444) internal successors, (2294), 18 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:16,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 151.0) internal successors, (2869), 19 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:16,449 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 151.0) internal successors, (2869), 19 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:16,449 INFO L175 Difference]: Start difference. First operand has 137 places, 127 transitions, 363 flow. Second operand 18 states and 2294 transitions. [2022-09-16 11:55:16,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 346 transitions, 1766 flow [2022-09-16 11:55:16,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 346 transitions, 1700 flow, removed 33 selfloop flow, removed 0 redundant places. [2022-09-16 11:55:16,464 INFO L231 Difference]: Finished difference. Result has 158 places, 139 transitions, 461 flow [2022-09-16 11:55:16,464 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=461, PETRI_PLACES=158, PETRI_TRANSITIONS=139} [2022-09-16 11:55:16,465 INFO L287 CegarLoopForPetriNet]: 129 programPoint places, 29 predicate places. [2022-09-16 11:55:16,465 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 139 transitions, 461 flow [2022-09-16 11:55:16,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 117.66666666666667) internal successors, (1412), 12 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:16,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:16,466 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:16,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:55:16,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:16,679 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:16,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:16,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1081816947, now seen corresponding path program 1 times [2022-09-16 11:55:16,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:16,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015295717] [2022-09-16 11:55:16,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:16,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:16,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:16,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015295717] [2022-09-16 11:55:16,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015295717] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:16,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797118179] [2022-09-16 11:55:16,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:16,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:16,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:16,723 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:55:16,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:55:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:16,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:55:16,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:16,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:16,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:55:16,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797118179] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:16,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:55:16,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:55:16,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465089744] [2022-09-16 11:55:16,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:16,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:55:16,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:16,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:55:16,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:55:16,839 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 151 [2022-09-16 11:55:16,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 139 transitions, 461 flow. Second operand has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:16,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:16,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 151 [2022-09-16 11:55:16,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:18,806 INFO L130 PetriNetUnfolder]: 10255/18639 cut-off events. [2022-09-16 11:55:18,807 INFO L131 PetriNetUnfolder]: For 25985/26469 co-relation queries the response was YES. [2022-09-16 11:55:18,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48736 conditions, 18639 events. 10255/18639 cut-off events. For 25985/26469 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 152324 event pairs, 791 based on Foata normal form. 524/13742 useless extension candidates. Maximal degree in co-relation 48707. Up to 6763 conditions per place. [2022-09-16 11:55:19,041 INFO L137 encePairwiseOnDemand]: 146/151 looper letters, 87 selfloop transitions, 11 changer transitions 0/189 dead transitions. [2022-09-16 11:55:19,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 189 transitions, 801 flow [2022-09-16 11:55:19,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:55:19,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:55:19,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 887 transitions. [2022-09-16 11:55:19,059 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8391674550614948 [2022-09-16 11:55:19,060 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 887 transitions. [2022-09-16 11:55:19,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 887 transitions. [2022-09-16 11:55:19,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:19,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 887 transitions. [2022-09-16 11:55:19,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 126.71428571428571) internal successors, (887), 7 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:19,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 151.0) internal successors, (1208), 8 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:19,063 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 151.0) internal successors, (1208), 8 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:19,063 INFO L175 Difference]: Start difference. First operand has 158 places, 139 transitions, 461 flow. Second operand 7 states and 887 transitions. [2022-09-16 11:55:19,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 189 transitions, 801 flow [2022-09-16 11:55:19,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 189 transitions, 769 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 11:55:19,085 INFO L231 Difference]: Finished difference. Result has 154 places, 135 transitions, 424 flow [2022-09-16 11:55:19,086 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=154, PETRI_TRANSITIONS=135} [2022-09-16 11:55:19,086 INFO L287 CegarLoopForPetriNet]: 129 programPoint places, 25 predicate places. [2022-09-16 11:55:19,086 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 135 transitions, 424 flow [2022-09-16 11:55:19,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:19,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:19,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:19,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 11:55:19,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:19,306 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:19,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:19,307 INFO L85 PathProgramCache]: Analyzing trace with hash -147609849, now seen corresponding path program 1 times [2022-09-16 11:55:19,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:19,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147322615] [2022-09-16 11:55:19,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:19,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:19,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:19,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:19,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147322615] [2022-09-16 11:55:19,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147322615] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:19,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:19,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:55:19,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447500596] [2022-09-16 11:55:19,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:19,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:55:19,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:19,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:55:19,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:55:19,359 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 151 [2022-09-16 11:55:19,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 135 transitions, 424 flow. Second operand has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:19,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:19,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 151 [2022-09-16 11:55:19,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:22,790 INFO L130 PetriNetUnfolder]: 19538/31723 cut-off events. [2022-09-16 11:55:22,791 INFO L131 PetriNetUnfolder]: For 26915/33855 co-relation queries the response was YES. [2022-09-16 11:55:22,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74979 conditions, 31723 events. 19538/31723 cut-off events. For 26915/33855 co-relation queries the response was YES. Maximal size of possible extension queue 1464. Compared 270276 event pairs, 9823 based on Foata normal form. 88/19148 useless extension candidates. Maximal degree in co-relation 74951. Up to 18916 conditions per place. [2022-09-16 11:55:23,295 INFO L137 encePairwiseOnDemand]: 145/151 looper letters, 85 selfloop transitions, 4 changer transitions 0/191 dead transitions. [2022-09-16 11:55:23,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 191 transitions, 859 flow [2022-09-16 11:55:23,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:55:23,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:55:23,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 644 transitions. [2022-09-16 11:55:23,298 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8529801324503311 [2022-09-16 11:55:23,298 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 644 transitions. [2022-09-16 11:55:23,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 644 transitions. [2022-09-16 11:55:23,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:23,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 644 transitions. [2022-09-16 11:55:23,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:23,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:23,301 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:23,301 INFO L175 Difference]: Start difference. First operand has 154 places, 135 transitions, 424 flow. Second operand 5 states and 644 transitions. [2022-09-16 11:55:23,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 191 transitions, 859 flow [2022-09-16 11:55:23,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 191 transitions, 845 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:55:23,326 INFO L231 Difference]: Finished difference. Result has 156 places, 138 transitions, 440 flow [2022-09-16 11:55:23,327 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=440, PETRI_PLACES=156, PETRI_TRANSITIONS=138} [2022-09-16 11:55:23,327 INFO L287 CegarLoopForPetriNet]: 129 programPoint places, 27 predicate places. [2022-09-16 11:55:23,327 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 138 transitions, 440 flow [2022-09-16 11:55:23,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:23,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:23,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:23,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:55:23,328 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:23,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:23,328 INFO L85 PathProgramCache]: Analyzing trace with hash 825674972, now seen corresponding path program 1 times [2022-09-16 11:55:23,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:23,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958609212] [2022-09-16 11:55:23,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:23,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:23,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:23,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958609212] [2022-09-16 11:55:23,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958609212] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:23,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:23,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:55:23,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650802519] [2022-09-16 11:55:23,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:23,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:55:23,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:23,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:55:23,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:55:23,366 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 151 [2022-09-16 11:55:23,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 138 transitions, 440 flow. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:23,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:23,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 151 [2022-09-16 11:55:23,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:24,355 INFO L130 PetriNetUnfolder]: 2883/9327 cut-off events. [2022-09-16 11:55:24,355 INFO L131 PetriNetUnfolder]: For 8915/9069 co-relation queries the response was YES. [2022-09-16 11:55:24,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18077 conditions, 9327 events. 2883/9327 cut-off events. For 8915/9069 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 97160 event pairs, 482 based on Foata normal form. 107/6820 useless extension candidates. Maximal degree in co-relation 18046. Up to 3581 conditions per place. [2022-09-16 11:55:24,449 INFO L137 encePairwiseOnDemand]: 145/151 looper letters, 37 selfloop transitions, 2 changer transitions 1/154 dead transitions. [2022-09-16 11:55:24,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 154 transitions, 622 flow [2022-09-16 11:55:24,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:55:24,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:55:24,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2022-09-16 11:55:24,453 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8807947019867549 [2022-09-16 11:55:24,453 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2022-09-16 11:55:24,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2022-09-16 11:55:24,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:24,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2022-09-16 11:55:24,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:24,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:24,460 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:24,460 INFO L175 Difference]: Start difference. First operand has 156 places, 138 transitions, 440 flow. Second operand 3 states and 399 transitions. [2022-09-16 11:55:24,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 154 transitions, 622 flow [2022-09-16 11:55:24,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 154 transitions, 620 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:55:24,470 INFO L231 Difference]: Finished difference. Result has 158 places, 139 transitions, 456 flow [2022-09-16 11:55:24,471 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=456, PETRI_PLACES=158, PETRI_TRANSITIONS=139} [2022-09-16 11:55:24,473 INFO L287 CegarLoopForPetriNet]: 129 programPoint places, 29 predicate places. [2022-09-16 11:55:24,473 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 139 transitions, 456 flow [2022-09-16 11:55:24,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:24,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:24,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:24,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:55:24,474 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:24,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:24,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1095285089, now seen corresponding path program 1 times [2022-09-16 11:55:24,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:24,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482825490] [2022-09-16 11:55:24,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:24,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:24,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:24,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:24,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482825490] [2022-09-16 11:55:24,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482825490] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:24,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:24,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:55:24,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831013131] [2022-09-16 11:55:24,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:24,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:55:24,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:24,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:55:24,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:55:24,514 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 151 [2022-09-16 11:55:24,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 139 transitions, 456 flow. Second operand has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:24,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:24,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 151 [2022-09-16 11:55:24,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:27,515 INFO L130 PetriNetUnfolder]: 15173/24013 cut-off events. [2022-09-16 11:55:27,516 INFO L131 PetriNetUnfolder]: For 47572/48032 co-relation queries the response was YES. [2022-09-16 11:55:27,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73450 conditions, 24013 events. 15173/24013 cut-off events. For 47572/48032 co-relation queries the response was YES. Maximal size of possible extension queue 1357. Compared 198191 event pairs, 4738 based on Foata normal form. 9/17709 useless extension candidates. Maximal degree in co-relation 73418. Up to 14099 conditions per place. [2022-09-16 11:55:27,873 INFO L137 encePairwiseOnDemand]: 145/151 looper letters, 85 selfloop transitions, 4 changer transitions 1/195 dead transitions. [2022-09-16 11:55:27,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 195 transitions, 968 flow [2022-09-16 11:55:27,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:55:27,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:55:27,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 639 transitions. [2022-09-16 11:55:27,875 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8463576158940397 [2022-09-16 11:55:27,875 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 639 transitions. [2022-09-16 11:55:27,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 639 transitions. [2022-09-16 11:55:27,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:27,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 639 transitions. [2022-09-16 11:55:27,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:27,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:27,878 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:27,878 INFO L175 Difference]: Start difference. First operand has 158 places, 139 transitions, 456 flow. Second operand 5 states and 639 transitions. [2022-09-16 11:55:27,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 195 transitions, 968 flow [2022-09-16 11:55:27,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 195 transitions, 966 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:55:27,893 INFO L231 Difference]: Finished difference. Result has 164 places, 142 transitions, 484 flow [2022-09-16 11:55:27,894 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=484, PETRI_PLACES=164, PETRI_TRANSITIONS=142} [2022-09-16 11:55:27,894 INFO L287 CegarLoopForPetriNet]: 129 programPoint places, 35 predicate places. [2022-09-16 11:55:27,894 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 142 transitions, 484 flow [2022-09-16 11:55:27,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:27,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:27,895 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:27,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:55:27,895 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:27,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:27,895 INFO L85 PathProgramCache]: Analyzing trace with hash 2050213458, now seen corresponding path program 1 times [2022-09-16 11:55:27,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:27,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666686141] [2022-09-16 11:55:27,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:27,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:27,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:27,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:27,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666686141] [2022-09-16 11:55:27,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666686141] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:27,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:27,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:55:27,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864029501] [2022-09-16 11:55:27,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:27,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:55:27,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:27,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:55:27,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:55:27,918 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 151 [2022-09-16 11:55:27,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 142 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:27,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:27,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 151 [2022-09-16 11:55:27,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:29,056 INFO L130 PetriNetUnfolder]: 2687/9660 cut-off events. [2022-09-16 11:55:29,056 INFO L131 PetriNetUnfolder]: For 8935/9641 co-relation queries the response was YES. [2022-09-16 11:55:29,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21250 conditions, 9660 events. 2687/9660 cut-off events. For 8935/9641 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 105277 event pairs, 1637 based on Foata normal form. 6/7453 useless extension candidates. Maximal degree in co-relation 21215. Up to 3669 conditions per place. [2022-09-16 11:55:29,168 INFO L137 encePairwiseOnDemand]: 149/151 looper letters, 23 selfloop transitions, 1 changer transitions 0/141 dead transitions. [2022-09-16 11:55:29,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 141 transitions, 528 flow [2022-09-16 11:55:29,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:55:29,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:55:29,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2022-09-16 11:55:29,170 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8520971302428256 [2022-09-16 11:55:29,170 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2022-09-16 11:55:29,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2022-09-16 11:55:29,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:29,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2022-09-16 11:55:29,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:29,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:29,174 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:29,174 INFO L175 Difference]: Start difference. First operand has 164 places, 142 transitions, 484 flow. Second operand 3 states and 386 transitions. [2022-09-16 11:55:29,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 141 transitions, 528 flow [2022-09-16 11:55:29,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 141 transitions, 526 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:55:29,185 INFO L231 Difference]: Finished difference. Result has 164 places, 141 transitions, 480 flow [2022-09-16 11:55:29,186 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=480, PETRI_PLACES=164, PETRI_TRANSITIONS=141} [2022-09-16 11:55:29,187 INFO L287 CegarLoopForPetriNet]: 129 programPoint places, 35 predicate places. [2022-09-16 11:55:29,188 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 141 transitions, 480 flow [2022-09-16 11:55:29,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:29,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:29,188 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:29,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:55:29,188 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:29,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:29,189 INFO L85 PathProgramCache]: Analyzing trace with hash 2050213457, now seen corresponding path program 1 times [2022-09-16 11:55:29,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:29,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359921903] [2022-09-16 11:55:29,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:29,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:29,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:29,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:29,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359921903] [2022-09-16 11:55:29,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359921903] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:29,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594854722] [2022-09-16 11:55:29,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:29,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:29,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:29,245 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:55:29,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:55:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:29,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:55:29,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:29,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:29,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:55:29,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:29,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594854722] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:55:29,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:55:29,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-09-16 11:55:29,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036083944] [2022-09-16 11:55:29,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:55:29,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:55:29,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:29,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:55:29,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:55:29,393 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 151 [2022-09-16 11:55:29,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 141 transitions, 480 flow. Second operand has 7 states, 7 states have (on average 125.42857142857143) internal successors, (878), 7 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:29,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:29,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 151 [2022-09-16 11:55:29,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:31,584 INFO L130 PetriNetUnfolder]: 4048/17449 cut-off events. [2022-09-16 11:55:31,584 INFO L131 PetriNetUnfolder]: For 14940/15535 co-relation queries the response was YES. [2022-09-16 11:55:31,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36492 conditions, 17449 events. 4048/17449 cut-off events. For 14940/15535 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 218390 event pairs, 436 based on Foata normal form. 171/15264 useless extension candidates. Maximal degree in co-relation 36457. Up to 2793 conditions per place. [2022-09-16 11:55:31,854 INFO L137 encePairwiseOnDemand]: 146/151 looper letters, 83 selfloop transitions, 8 changer transitions 0/208 dead transitions. [2022-09-16 11:55:31,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 208 transitions, 1090 flow [2022-09-16 11:55:31,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:55:31,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:55:31,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 802 transitions. [2022-09-16 11:55:31,856 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8852097130242825 [2022-09-16 11:55:31,857 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 802 transitions. [2022-09-16 11:55:31,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 802 transitions. [2022-09-16 11:55:31,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:31,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 802 transitions. [2022-09-16 11:55:31,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 133.66666666666666) internal successors, (802), 6 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:31,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 151.0) internal successors, (1057), 7 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:31,860 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 151.0) internal successors, (1057), 7 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:31,860 INFO L175 Difference]: Start difference. First operand has 164 places, 141 transitions, 480 flow. Second operand 6 states and 802 transitions. [2022-09-16 11:55:31,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 208 transitions, 1090 flow [2022-09-16 11:55:31,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 208 transitions, 1089 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:55:31,871 INFO L231 Difference]: Finished difference. Result has 172 places, 147 transitions, 557 flow [2022-09-16 11:55:31,872 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=557, PETRI_PLACES=172, PETRI_TRANSITIONS=147} [2022-09-16 11:55:31,872 INFO L287 CegarLoopForPetriNet]: 129 programPoint places, 43 predicate places. [2022-09-16 11:55:31,872 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 147 transitions, 557 flow [2022-09-16 11:55:31,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 125.42857142857143) internal successors, (878), 7 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:31,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:31,873 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:31,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 11:55:32,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:32,091 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:32,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:32,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1134840108, now seen corresponding path program 1 times [2022-09-16 11:55:32,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:32,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685383070] [2022-09-16 11:55:32,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:32,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:32,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:32,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:32,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685383070] [2022-09-16 11:55:32,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685383070] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:32,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541716161] [2022-09-16 11:55:32,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:32,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:32,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:32,141 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:55:32,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:55:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:32,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:55:32,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:32,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:32,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:55:32,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:32,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541716161] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:55:32,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:55:32,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:55:32,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619872939] [2022-09-16 11:55:32,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:55:32,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:55:32,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:32,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:55:32,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:55:32,258 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 151 [2022-09-16 11:55:32,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 147 transitions, 557 flow. Second operand has 12 states, 12 states have (on average 117.83333333333333) internal successors, (1414), 12 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:32,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:32,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 151 [2022-09-16 11:55:32,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:46,830 INFO L130 PetriNetUnfolder]: 47360/83606 cut-off events. [2022-09-16 11:55:46,830 INFO L131 PetriNetUnfolder]: For 293727/294052 co-relation queries the response was YES. [2022-09-16 11:55:48,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293379 conditions, 83606 events. 47360/83606 cut-off events. For 293727/294052 co-relation queries the response was YES. Maximal size of possible extension queue 3568. Compared 867767 event pairs, 5174 based on Foata normal form. 1441/79148 useless extension candidates. Maximal degree in co-relation 293340. Up to 17069 conditions per place. [2022-09-16 11:55:48,689 INFO L137 encePairwiseOnDemand]: 144/151 looper letters, 330 selfloop transitions, 18 changer transitions 1/454 dead transitions. [2022-09-16 11:55:48,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 454 transitions, 3356 flow [2022-09-16 11:55:48,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:55:48,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:55:48,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2269 transitions. [2022-09-16 11:55:48,710 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8348050036791759 [2022-09-16 11:55:48,719 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2269 transitions. [2022-09-16 11:55:48,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2269 transitions. [2022-09-16 11:55:48,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:48,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2269 transitions. [2022-09-16 11:55:48,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 126.05555555555556) internal successors, (2269), 18 states have internal predecessors, (2269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:48,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 151.0) internal successors, (2869), 19 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:48,728 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 151.0) internal successors, (2869), 19 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:48,728 INFO L175 Difference]: Start difference. First operand has 172 places, 147 transitions, 557 flow. Second operand 18 states and 2269 transitions. [2022-09-16 11:55:48,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 454 transitions, 3356 flow [2022-09-16 11:55:48,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 454 transitions, 3290 flow, removed 33 selfloop flow, removed 0 redundant places. [2022-09-16 11:55:48,835 INFO L231 Difference]: Finished difference. Result has 193 places, 159 transitions, 655 flow [2022-09-16 11:55:48,835 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=655, PETRI_PLACES=193, PETRI_TRANSITIONS=159} [2022-09-16 11:55:48,837 INFO L287 CegarLoopForPetriNet]: 129 programPoint places, 64 predicate places. [2022-09-16 11:55:48,837 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 159 transitions, 655 flow [2022-09-16 11:55:48,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 117.83333333333333) internal successors, (1414), 12 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:48,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:48,837 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:48,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-09-16 11:55:49,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-09-16 11:55:49,057 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:49,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:49,057 INFO L85 PathProgramCache]: Analyzing trace with hash -820304488, now seen corresponding path program 1 times [2022-09-16 11:55:49,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:49,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306446733] [2022-09-16 11:55:49,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:49,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:49,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:49,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306446733] [2022-09-16 11:55:49,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306446733] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:49,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879732053] [2022-09-16 11:55:49,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:49,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:49,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:49,219 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:55:49,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:55:49,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:49,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:55:49,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:49,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:55:49,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879732053] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:49,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:55:49,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:55:49,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256161409] [2022-09-16 11:55:49,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:49,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:55:49,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:49,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:55:49,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:55:49,330 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 151 [2022-09-16 11:55:49,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 159 transitions, 655 flow. Second operand has 6 states, 6 states have (on average 117.66666666666667) internal successors, (706), 6 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:49,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:49,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 151 [2022-09-16 11:55:49,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:02,400 INFO L130 PetriNetUnfolder]: 42181/77351 cut-off events. [2022-09-16 11:56:02,401 INFO L131 PetriNetUnfolder]: For 270825/275806 co-relation queries the response was YES. [2022-09-16 11:56:03,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269833 conditions, 77351 events. 42181/77351 cut-off events. For 270825/275806 co-relation queries the response was YES. Maximal size of possible extension queue 3359. Compared 841419 event pairs, 2487 based on Foata normal form. 2859/73732 useless extension candidates. Maximal degree in co-relation 269790. Up to 29401 conditions per place. [2022-09-16 11:56:04,079 INFO L137 encePairwiseOnDemand]: 146/151 looper letters, 120 selfloop transitions, 11 changer transitions 1/237 dead transitions. [2022-09-16 11:56:04,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 237 transitions, 1442 flow [2022-09-16 11:56:04,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:56:04,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:56:04,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 879 transitions. [2022-09-16 11:56:04,101 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8315988647114475 [2022-09-16 11:56:04,101 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 879 transitions. [2022-09-16 11:56:04,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 879 transitions. [2022-09-16 11:56:04,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:04,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 879 transitions. [2022-09-16 11:56:04,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 125.57142857142857) internal successors, (879), 7 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:04,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 151.0) internal successors, (1208), 8 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:04,104 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 151.0) internal successors, (1208), 8 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:04,104 INFO L175 Difference]: Start difference. First operand has 193 places, 159 transitions, 655 flow. Second operand 7 states and 879 transitions. [2022-09-16 11:56:04,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 237 transitions, 1442 flow [2022-09-16 11:56:04,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 237 transitions, 1410 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 11:56:04,341 INFO L231 Difference]: Finished difference. Result has 189 places, 155 transitions, 618 flow [2022-09-16 11:56:04,341 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=618, PETRI_PLACES=189, PETRI_TRANSITIONS=155} [2022-09-16 11:56:04,341 INFO L287 CegarLoopForPetriNet]: 129 programPoint places, 60 predicate places. [2022-09-16 11:56:04,342 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 155 transitions, 618 flow [2022-09-16 11:56:04,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.66666666666667) internal successors, (706), 6 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:04,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:04,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:56:04,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-16 11:56:04,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:56:04,556 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:56:04,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:04,556 INFO L85 PathProgramCache]: Analyzing trace with hash -725933095, now seen corresponding path program 1 times [2022-09-16 11:56:04,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:04,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41053380] [2022-09-16 11:56:04,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:04,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:04,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:04,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:04,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41053380] [2022-09-16 11:56:04,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41053380] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:56:04,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:56:04,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:56:04,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971929624] [2022-09-16 11:56:04,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:56:04,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:56:04,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:04,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:56:04,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:56:04,577 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 151 [2022-09-16 11:56:04,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 155 transitions, 618 flow. Second operand has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:04,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:04,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 151 [2022-09-16 11:56:04,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:23,891 INFO L130 PetriNetUnfolder]: 54929/100137 cut-off events. [2022-09-16 11:56:23,891 INFO L131 PetriNetUnfolder]: For 290081/305724 co-relation queries the response was YES. [2022-09-16 11:56:25,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320979 conditions, 100137 events. 54929/100137 cut-off events. For 290081/305724 co-relation queries the response was YES. Maximal size of possible extension queue 4828. Compared 1145490 event pairs, 24747 based on Foata normal form. 289/85752 useless extension candidates. Maximal degree in co-relation 320937. Up to 57807 conditions per place. [2022-09-16 11:56:26,131 INFO L137 encePairwiseOnDemand]: 145/151 looper letters, 107 selfloop transitions, 4 changer transitions 0/227 dead transitions. [2022-09-16 11:56:26,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 227 transitions, 1319 flow [2022-09-16 11:56:26,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:56:26,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:56:26,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 638 transitions. [2022-09-16 11:56:26,134 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8450331125827815 [2022-09-16 11:56:26,134 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 638 transitions. [2022-09-16 11:56:26,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 638 transitions. [2022-09-16 11:56:26,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:26,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 638 transitions. [2022-09-16 11:56:26,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.6) internal successors, (638), 5 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:26,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:26,137 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:26,137 INFO L175 Difference]: Start difference. First operand has 189 places, 155 transitions, 618 flow. Second operand 5 states and 638 transitions. [2022-09-16 11:56:26,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 227 transitions, 1319 flow [2022-09-16 11:56:26,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 227 transitions, 1305 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:56:26,453 INFO L231 Difference]: Finished difference. Result has 191 places, 158 transitions, 634 flow [2022-09-16 11:56:26,453 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=634, PETRI_PLACES=191, PETRI_TRANSITIONS=158} [2022-09-16 11:56:26,454 INFO L287 CegarLoopForPetriNet]: 129 programPoint places, 62 predicate places. [2022-09-16 11:56:26,454 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 158 transitions, 634 flow [2022-09-16 11:56:26,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:26,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:26,455 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:56:26,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 11:56:26,455 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:56:26,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:26,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1386168841, now seen corresponding path program 1 times [2022-09-16 11:56:26,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:26,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200797100] [2022-09-16 11:56:26,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:26,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:26,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:26,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:26,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200797100] [2022-09-16 11:56:26,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200797100] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:56:26,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100276421] [2022-09-16 11:56:26,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:26,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:56:26,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:56:26,521 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:56:26,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 11:56:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:26,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:56:26,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:56:26,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:26,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:56:26,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:26,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100276421] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:56:26,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:56:26,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:56:26,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350773956] [2022-09-16 11:56:26,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:56:26,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:56:26,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:26,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:56:26,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:56:26,639 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 151 [2022-09-16 11:56:26,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 158 transitions, 634 flow. Second operand has 12 states, 12 states have (on average 118.0) internal successors, (1416), 12 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:26,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:26,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 151 [2022-09-16 11:56:26,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:10,378 INFO L130 PetriNetUnfolder]: 99994/175154 cut-off events. [2022-09-16 11:57:10,378 INFO L131 PetriNetUnfolder]: For 606356/617008 co-relation queries the response was YES. [2022-09-16 11:57:13,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628248 conditions, 175154 events. 99994/175154 cut-off events. For 606356/617008 co-relation queries the response was YES. Maximal size of possible extension queue 6598. Compared 1988945 event pairs, 11480 based on Foata normal form. 3547/163875 useless extension candidates. Maximal degree in co-relation 628203. Up to 44038 conditions per place.