/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-more-dec-subseq.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:57:56,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:57:56,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:57:56,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:57:56,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:57:56,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:57:56,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:57:56,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:57:56,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:57:56,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:57:56,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:57:56,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:57:56,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:57:56,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:57:56,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:57:56,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:57:56,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:57:56,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:57:56,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:57:56,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:57:56,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:57:56,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:57:56,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:57:56,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:57:56,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:57:56,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:57:56,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:57:56,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:57:56,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:57:56,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:57:56,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:57:56,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:57:56,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:57:56,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:57:56,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:57:56,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:57:56,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:57:56,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:57:56,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:57:56,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:57:56,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:57:56,480 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 11:57:56,497 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:57:56,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:57:56,498 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:57:56,498 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:57:56,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:57:56,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:57:56,499 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:57:56,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:57:56,499 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:57:56,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:57:56,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:57:56,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:57:56,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:57:56,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:57:56,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:57:56,500 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:57:56,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:57:56,500 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:57:56,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:57:56,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:57:56,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:57:56,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:57:56,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:57:56,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:57:56,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:57:56,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:57:56,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:57:56,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:57:56,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:57:56,501 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:57:56,502 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:57:56,502 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:57:56,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:57:56,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:57:56,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:57:56,719 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:57:56,720 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:57:56,721 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c [2022-09-16 11:57:56,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8775c5d6/6b9a7ff9437f43aeb4b2e63c5dd8f47c/FLAG70ffa1024 [2022-09-16 11:57:57,146 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:57:57,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c [2022-09-16 11:57:57,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8775c5d6/6b9a7ff9437f43aeb4b2e63c5dd8f47c/FLAG70ffa1024 [2022-09-16 11:57:57,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8775c5d6/6b9a7ff9437f43aeb4b2e63c5dd8f47c [2022-09-16 11:57:57,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:57:57,179 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:57:57,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:57:57,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:57:57,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:57:57,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:57:57" (1/1) ... [2022-09-16 11:57:57,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b6f285c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:57, skipping insertion in model container [2022-09-16 11:57:57,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:57:57" (1/1) ... [2022-09-16 11:57:57,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:57:57,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:57:57,405 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-more-dec-subseq.wvr.c[2924,2937] [2022-09-16 11:57:57,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:57:57,423 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:57:57,454 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-more-dec-subseq.wvr.c[2924,2937] [2022-09-16 11:57:57,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:57:57,474 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:57:57,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:57 WrapperNode [2022-09-16 11:57:57,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:57:57,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:57:57,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:57:57,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:57:57,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:57" (1/1) ... [2022-09-16 11:57:57,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:57" (1/1) ... [2022-09-16 11:57:57,513 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 201 [2022-09-16 11:57:57,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:57:57,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:57:57,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:57:57,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:57:57,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:57" (1/1) ... [2022-09-16 11:57:57,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:57" (1/1) ... [2022-09-16 11:57:57,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:57" (1/1) ... [2022-09-16 11:57:57,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:57" (1/1) ... [2022-09-16 11:57:57,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:57" (1/1) ... [2022-09-16 11:57:57,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:57" (1/1) ... [2022-09-16 11:57:57,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:57" (1/1) ... [2022-09-16 11:57:57,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:57:57,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:57:57,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:57:57,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:57:57,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:57" (1/1) ... [2022-09-16 11:57:57,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:57:57,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:57:57,580 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 11:57:57,615 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 11:57:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:57:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:57:57,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:57:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:57:57,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:57:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:57:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:57:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:57:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:57:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:57:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:57:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:57:57,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:57:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:57:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:57:57,628 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 11:57:57,724 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:57:57,726 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:57:58,036 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:57:58,114 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:57:58,114 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-16 11:57:58,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:57:58 BoogieIcfgContainer [2022-09-16 11:57:58,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:57:58,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:57:58,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:57:58,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:57:58,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:57:57" (1/3) ... [2022-09-16 11:57:58,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cf9635a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:57:58, skipping insertion in model container [2022-09-16 11:57:58,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:57" (2/3) ... [2022-09-16 11:57:58,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cf9635a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:57:58, skipping insertion in model container [2022-09-16 11:57:58,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:57:58" (3/3) ... [2022-09-16 11:57:58,122 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-dec-subseq.wvr.c [2022-09-16 11:57:58,134 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:57:58,134 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-09-16 11:57:58,134 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:57:58,186 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 11:57:58,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 202 transitions, 420 flow [2022-09-16 11:57:58,273 INFO L130 PetriNetUnfolder]: 15/200 cut-off events. [2022-09-16 11:57:58,274 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 11:57:58,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 200 events. 15/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 154 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 164. Up to 2 conditions per place. [2022-09-16 11:57:58,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 202 transitions, 420 flow [2022-09-16 11:57:58,280 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 181 transitions, 371 flow [2022-09-16 11:57:58,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:57:58,291 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;@6623702, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:57:58,292 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-09-16 11:57:58,303 INFO L130 PetriNetUnfolder]: 3/73 cut-off events. [2022-09-16 11:57:58,303 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:57:58,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:58,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:57:58,312 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:57:58,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:58,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1028364021, now seen corresponding path program 1 times [2022-09-16 11:57:58,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:58,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829346326] [2022-09-16 11:57:58,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:58,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:58,555 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 11:57:58,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:58,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829346326] [2022-09-16 11:57:58,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829346326] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:57:58,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:57:58,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:57:58,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162491260] [2022-09-16 11:57:58,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:57:58,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:57:58,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:58,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:57:58,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:57:58,604 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 202 [2022-09-16 11:57:58,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 181 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 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 11:57:58,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:58,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 202 [2022-09-16 11:57:58,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:58,847 INFO L130 PetriNetUnfolder]: 65/374 cut-off events. [2022-09-16 11:57:58,848 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-09-16 11:57:58,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553 conditions, 374 events. 65/374 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1067 event pairs, 28 based on Foata normal form. 28/326 useless extension candidates. Maximal degree in co-relation 281. Up to 78 conditions per place. [2022-09-16 11:57:58,854 INFO L137 encePairwiseOnDemand]: 178/202 looper letters, 52 selfloop transitions, 9 changer transitions 5/197 dead transitions. [2022-09-16 11:57:58,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 197 transitions, 534 flow [2022-09-16 11:57:58,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:57:58,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:57:58,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 853 transitions. [2022-09-16 11:57:58,874 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8445544554455445 [2022-09-16 11:57:58,875 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 853 transitions. [2022-09-16 11:57:58,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 853 transitions. [2022-09-16 11:57:58,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:58,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 853 transitions. [2022-09-16 11:57:58,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.6) internal successors, (853), 5 states have internal predecessors, (853), 0 states have call successors, (0), 0 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 11:57:58,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 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 11:57:58,896 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 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 11:57:58,897 INFO L175 Difference]: Start difference. First operand has 174 places, 181 transitions, 371 flow. Second operand 5 states and 853 transitions. [2022-09-16 11:57:58,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 197 transitions, 534 flow [2022-09-16 11:57:58,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 197 transitions, 524 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:57:58,906 INFO L231 Difference]: Finished difference. Result has 176 places, 172 transitions, 401 flow [2022-09-16 11:57:58,908 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=401, PETRI_PLACES=176, PETRI_TRANSITIONS=172} [2022-09-16 11:57:58,912 INFO L287 CegarLoopForPetriNet]: 174 programPoint places, 2 predicate places. [2022-09-16 11:57:58,912 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 172 transitions, 401 flow [2022-09-16 11:57:58,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 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 11:57:58,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:58,913 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:57:58,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:57:58,914 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:57:58,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:58,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1880780099, now seen corresponding path program 1 times [2022-09-16 11:57:58,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:58,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217922711] [2022-09-16 11:57:58,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:58,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:59,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:59,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:59,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217922711] [2022-09-16 11:57:59,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217922711] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:57:59,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761176316] [2022-09-16 11:57:59,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:59,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:57:59,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:57:59,035 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 11:57:59,036 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 11:57:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:59,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:57:59,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:57:59,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:59,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:57:59,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:59,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761176316] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:57:59,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:57:59,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:57:59,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939410674] [2022-09-16 11:57:59,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:57:59,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:57:59,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:59,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:57:59,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:57:59,286 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 202 [2022-09-16 11:57:59,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 172 transitions, 401 flow. Second operand has 12 states, 12 states have (on average 156.66666666666666) internal successors, (1880), 12 states have internal predecessors, (1880), 0 states have call successors, (0), 0 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 11:57:59,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:59,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 202 [2022-09-16 11:57:59,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:59,650 INFO L130 PetriNetUnfolder]: 161/807 cut-off events. [2022-09-16 11:57:59,650 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-09-16 11:57:59,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1276 conditions, 807 events. 161/807 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3514 event pairs, 70 based on Foata normal form. 6/648 useless extension candidates. Maximal degree in co-relation 812. Up to 71 conditions per place. [2022-09-16 11:57:59,657 INFO L137 encePairwiseOnDemand]: 187/202 looper letters, 106 selfloop transitions, 40 changer transitions 0/277 dead transitions. [2022-09-16 11:57:59,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 277 transitions, 969 flow [2022-09-16 11:57:59,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:57:59,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:57:59,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2924 transitions. [2022-09-16 11:57:59,662 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8041804180418042 [2022-09-16 11:57:59,662 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2924 transitions. [2022-09-16 11:57:59,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2924 transitions. [2022-09-16 11:57:59,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:59,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2924 transitions. [2022-09-16 11:57:59,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 162.44444444444446) internal successors, (2924), 18 states have internal predecessors, (2924), 0 states have call successors, (0), 0 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 11:57:59,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 202.0) internal successors, (3838), 19 states have internal predecessors, (3838), 0 states have call successors, (0), 0 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 11:57:59,674 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 202.0) internal successors, (3838), 19 states have internal predecessors, (3838), 0 states have call successors, (0), 0 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 11:57:59,674 INFO L175 Difference]: Start difference. First operand has 176 places, 172 transitions, 401 flow. Second operand 18 states and 2924 transitions. [2022-09-16 11:57:59,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 277 transitions, 969 flow [2022-09-16 11:57:59,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 277 transitions, 964 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:57:59,682 INFO L231 Difference]: Finished difference. Result has 191 places, 199 transitions, 634 flow [2022-09-16 11:57:59,683 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=634, PETRI_PLACES=191, PETRI_TRANSITIONS=199} [2022-09-16 11:57:59,683 INFO L287 CegarLoopForPetriNet]: 174 programPoint places, 17 predicate places. [2022-09-16 11:57:59,683 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 199 transitions, 634 flow [2022-09-16 11:57:59,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 156.66666666666666) internal successors, (1880), 12 states have internal predecessors, (1880), 0 states have call successors, (0), 0 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 11:57:59,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:59,685 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:57:59,705 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 11:57:59,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:57:59,897 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:57:59,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:59,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1825358548, now seen corresponding path program 1 times [2022-09-16 11:57:59,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:59,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000520161] [2022-09-16 11:57:59,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:59,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:59,972 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:59,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:59,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000520161] [2022-09-16 11:57:59,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000520161] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:57:59,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139757555] [2022-09-16 11:57:59,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:59,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:57:59,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:57:59,989 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 11:57:59,990 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 11:58:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:00,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:58:00,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:00,097 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:00,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:58:00,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139757555] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:00,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:58:00,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:58:00,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850148243] [2022-09-16 11:58:00,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:00,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:58:00,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:00,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:58:00,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:58:00,105 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 202 [2022-09-16 11:58:00,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 199 transitions, 634 flow. Second operand has 6 states, 6 states have (on average 156.33333333333334) internal successors, (938), 6 states have internal predecessors, (938), 0 states have call successors, (0), 0 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 11:58:00,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:00,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 202 [2022-09-16 11:58:00,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:00,294 INFO L130 PetriNetUnfolder]: 161/799 cut-off events. [2022-09-16 11:58:00,294 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2022-09-16 11:58:00,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1313 conditions, 799 events. 161/799 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3473 event pairs, 70 based on Foata normal form. 8/642 useless extension candidates. Maximal degree in co-relation 1021. Up to 240 conditions per place. [2022-09-16 11:58:00,300 INFO L137 encePairwiseOnDemand]: 191/202 looper letters, 53 selfloop transitions, 27 changer transitions 0/211 dead transitions. [2022-09-16 11:58:00,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 211 transitions, 788 flow [2022-09-16 11:58:00,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:58:00,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:58:00,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1139 transitions. [2022-09-16 11:58:00,303 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8055162659123055 [2022-09-16 11:58:00,303 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1139 transitions. [2022-09-16 11:58:00,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1139 transitions. [2022-09-16 11:58:00,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:00,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1139 transitions. [2022-09-16 11:58:00,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 162.71428571428572) internal successors, (1139), 7 states have internal predecessors, (1139), 0 states have call successors, (0), 0 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 11:58:00,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 202.0) internal successors, (1616), 8 states have internal predecessors, (1616), 0 states have call successors, (0), 0 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 11:58:00,307 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 202.0) internal successors, (1616), 8 states have internal predecessors, (1616), 0 states have call successors, (0), 0 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 11:58:00,307 INFO L175 Difference]: Start difference. First operand has 191 places, 199 transitions, 634 flow. Second operand 7 states and 1139 transitions. [2022-09-16 11:58:00,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 211 transitions, 788 flow [2022-09-16 11:58:00,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 211 transitions, 714 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-09-16 11:58:00,317 INFO L231 Difference]: Finished difference. Result has 186 places, 191 transitions, 560 flow [2022-09-16 11:58:00,317 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=560, PETRI_PLACES=186, PETRI_TRANSITIONS=191} [2022-09-16 11:58:00,319 INFO L287 CegarLoopForPetriNet]: 174 programPoint places, 12 predicate places. [2022-09-16 11:58:00,319 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 191 transitions, 560 flow [2022-09-16 11:58:00,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 156.33333333333334) internal successors, (938), 6 states have internal predecessors, (938), 0 states have call successors, (0), 0 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 11:58:00,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:00,320 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:00,345 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 11:58:00,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 11:58:00,536 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:58:00,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:00,536 INFO L85 PathProgramCache]: Analyzing trace with hash 648881931, now seen corresponding path program 2 times [2022-09-16 11:58:00,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:00,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376331347] [2022-09-16 11:58:00,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:00,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:00,672 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:00,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:00,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376331347] [2022-09-16 11:58:00,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376331347] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:00,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010587621] [2022-09-16 11:58:00,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:58:00,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:00,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:00,674 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 11:58:00,675 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 11:58:00,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:58:00,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:58:00,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:58:00,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:00,849 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:58:00,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:58:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:58:00,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010587621] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:58:00,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:58:00,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:58:00,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361102787] [2022-09-16 11:58:00,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:58:00,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:58:00,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:00,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:58:00,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:58:00,959 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 202 [2022-09-16 11:58:00,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 191 transitions, 560 flow. Second operand has 18 states, 18 states have (on average 142.61111111111111) internal successors, (2567), 18 states have internal predecessors, (2567), 0 states have call successors, (0), 0 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 11:58:00,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:00,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 202 [2022-09-16 11:58:00,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:01,786 INFO L130 PetriNetUnfolder]: 141/913 cut-off events. [2022-09-16 11:58:01,787 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2022-09-16 11:58:01,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1453 conditions, 913 events. 141/913 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4038 event pairs, 49 based on Foata normal form. 4/798 useless extension candidates. Maximal degree in co-relation 942. Up to 51 conditions per place. [2022-09-16 11:58:01,792 INFO L137 encePairwiseOnDemand]: 180/202 looper letters, 128 selfloop transitions, 65 changer transitions 2/309 dead transitions. [2022-09-16 11:58:01,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 309 transitions, 1265 flow [2022-09-16 11:58:01,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-09-16 11:58:01,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-09-16 11:58:01,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 7022 transitions. [2022-09-16 11:58:01,804 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7094362497474237 [2022-09-16 11:58:01,804 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 7022 transitions. [2022-09-16 11:58:01,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 7022 transitions. [2022-09-16 11:58:01,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:01,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 7022 transitions. [2022-09-16 11:58:01,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 143.30612244897958) internal successors, (7022), 49 states have internal predecessors, (7022), 0 states have call successors, (0), 0 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 11:58:01,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 202.0) internal successors, (10100), 50 states have internal predecessors, (10100), 0 states have call successors, (0), 0 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 11:58:01,838 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 202.0) internal successors, (10100), 50 states have internal predecessors, (10100), 0 states have call successors, (0), 0 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 11:58:01,838 INFO L175 Difference]: Start difference. First operand has 186 places, 191 transitions, 560 flow. Second operand 49 states and 7022 transitions. [2022-09-16 11:58:01,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 309 transitions, 1265 flow [2022-09-16 11:58:01,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 309 transitions, 1222 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:58:01,846 INFO L231 Difference]: Finished difference. Result has 230 places, 212 transitions, 767 flow [2022-09-16 11:58:01,846 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=767, PETRI_PLACES=230, PETRI_TRANSITIONS=212} [2022-09-16 11:58:01,847 INFO L287 CegarLoopForPetriNet]: 174 programPoint places, 56 predicate places. [2022-09-16 11:58:01,848 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 212 transitions, 767 flow [2022-09-16 11:58:01,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 142.61111111111111) internal successors, (2567), 18 states have internal predecessors, (2567), 0 states have call successors, (0), 0 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 11:58:01,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:01,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:01,880 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 11:58:02,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:02,060 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:58:02,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:02,060 INFO L85 PathProgramCache]: Analyzing trace with hash -200794340, now seen corresponding path program 1 times [2022-09-16 11:58:02,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:02,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168291678] [2022-09-16 11:58:02,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:02,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:02,109 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 11:58:02,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:02,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168291678] [2022-09-16 11:58:02,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168291678] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:02,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:58:02,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:58:02,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560866620] [2022-09-16 11:58:02,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:02,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:58:02,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:02,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:58:02,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:58:02,111 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 202 [2022-09-16 11:58:02,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 212 transitions, 767 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 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 11:58:02,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:02,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 202 [2022-09-16 11:58:02,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:02,297 INFO L130 PetriNetUnfolder]: 491/1956 cut-off events. [2022-09-16 11:58:02,297 INFO L131 PetriNetUnfolder]: For 194/243 co-relation queries the response was YES. [2022-09-16 11:58:02,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3225 conditions, 1956 events. 491/1956 cut-off events. For 194/243 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 12106 event pairs, 119 based on Foata normal form. 0/1711 useless extension candidates. Maximal degree in co-relation 2948. Up to 519 conditions per place. [2022-09-16 11:58:02,307 INFO L137 encePairwiseOnDemand]: 198/202 looper letters, 20 selfloop transitions, 2 changer transitions 6/223 dead transitions. [2022-09-16 11:58:02,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 223 transitions, 844 flow [2022-09-16 11:58:02,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:58:02,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:58:02,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2022-09-16 11:58:02,310 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8927392739273927 [2022-09-16 11:58:02,310 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2022-09-16 11:58:02,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2022-09-16 11:58:02,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:02,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2022-09-16 11:58:02,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 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 11:58:02,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:02,313 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:02,313 INFO L175 Difference]: Start difference. First operand has 230 places, 212 transitions, 767 flow. Second operand 3 states and 541 transitions. [2022-09-16 11:58:02,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 223 transitions, 844 flow [2022-09-16 11:58:02,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 223 transitions, 761 flow, removed 9 selfloop flow, removed 15 redundant places. [2022-09-16 11:58:02,318 INFO L231 Difference]: Finished difference. Result has 216 places, 209 transitions, 689 flow [2022-09-16 11:58:02,318 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=689, PETRI_PLACES=216, PETRI_TRANSITIONS=209} [2022-09-16 11:58:02,320 INFO L287 CegarLoopForPetriNet]: 174 programPoint places, 42 predicate places. [2022-09-16 11:58:02,320 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 209 transitions, 689 flow [2022-09-16 11:58:02,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 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 11:58:02,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:02,320 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:02,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:58:02,321 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:58:02,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:02,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1961196920, now seen corresponding path program 1 times [2022-09-16 11:58:02,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:02,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170741842] [2022-09-16 11:58:02,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:02,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:02,401 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 11:58:02,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:02,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170741842] [2022-09-16 11:58:02,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170741842] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:02,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474889712] [2022-09-16 11:58:02,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:02,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:02,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:02,404 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 11:58:02,405 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 11:58:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:02,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:58:02,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-16 11:58:02,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:58:02,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474889712] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:02,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:58:02,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3] total 9 [2022-09-16 11:58:02,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432490177] [2022-09-16 11:58:02,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:02,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:58:02,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:02,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:58:02,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:58:02,698 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 202 [2022-09-16 11:58:02,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 209 transitions, 689 flow. Second operand has 7 states, 7 states have (on average 147.71428571428572) internal successors, (1034), 7 states have internal predecessors, (1034), 0 states have call successors, (0), 0 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 11:58:02,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:02,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 202 [2022-09-16 11:58:02,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:02,896 INFO L130 PetriNetUnfolder]: 303/1536 cut-off events. [2022-09-16 11:58:02,896 INFO L131 PetriNetUnfolder]: For 227/227 co-relation queries the response was YES. [2022-09-16 11:58:02,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2568 conditions, 1536 events. 303/1536 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 8800 event pairs, 180 based on Foata normal form. 4/1389 useless extension candidates. Maximal degree in co-relation 2261. Up to 575 conditions per place. [2022-09-16 11:58:02,904 INFO L137 encePairwiseOnDemand]: 192/202 looper letters, 69 selfloop transitions, 13 changer transitions 7/216 dead transitions. [2022-09-16 11:58:02,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 216 transitions, 882 flow [2022-09-16 11:58:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:58:02,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:58:02,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1204 transitions. [2022-09-16 11:58:02,907 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.745049504950495 [2022-09-16 11:58:02,907 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1204 transitions. [2022-09-16 11:58:02,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1204 transitions. [2022-09-16 11:58:02,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:02,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1204 transitions. [2022-09-16 11:58:02,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 150.5) internal successors, (1204), 8 states have internal predecessors, (1204), 0 states have call successors, (0), 0 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 11:58:02,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 202.0) internal successors, (1818), 9 states have internal predecessors, (1818), 0 states have call successors, (0), 0 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 11:58:02,913 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 202.0) internal successors, (1818), 9 states have internal predecessors, (1818), 0 states have call successors, (0), 0 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 11:58:02,913 INFO L175 Difference]: Start difference. First operand has 216 places, 209 transitions, 689 flow. Second operand 8 states and 1204 transitions. [2022-09-16 11:58:02,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 216 transitions, 882 flow [2022-09-16 11:58:02,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 216 transitions, 880 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:58:02,918 INFO L231 Difference]: Finished difference. Result has 218 places, 207 transitions, 707 flow [2022-09-16 11:58:02,918 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=707, PETRI_PLACES=218, PETRI_TRANSITIONS=207} [2022-09-16 11:58:02,919 INFO L287 CegarLoopForPetriNet]: 174 programPoint places, 44 predicate places. [2022-09-16 11:58:02,919 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 207 transitions, 707 flow [2022-09-16 11:58:02,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 147.71428571428572) internal successors, (1034), 7 states have internal predecessors, (1034), 0 states have call successors, (0), 0 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 11:58:02,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:02,920 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:02,945 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 11:58:03,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:03,135 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:58:03,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:03,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1232119876, now seen corresponding path program 1 times [2022-09-16 11:58:03,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:03,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872411584] [2022-09-16 11:58:03,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:03,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:03,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:58:03,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:03,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872411584] [2022-09-16 11:58:03,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872411584] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:03,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574888523] [2022-09-16 11:58:03,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:03,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:03,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:03,173 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 11:58:03,174 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 11:58:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:03,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 9 conjunts are in the unsatisfiable core [2022-09-16 11:58:03,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:03,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:03,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:58:03,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:03,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574888523] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:58:03,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:58:03,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 10, 10] total 19 [2022-09-16 11:58:03,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582429015] [2022-09-16 11:58:03,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:58:03,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 11:58:03,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:03,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 11:58:03,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-09-16 11:58:03,672 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 202 [2022-09-16 11:58:03,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 207 transitions, 707 flow. Second operand has 19 states, 19 states have (on average 138.68421052631578) internal successors, (2635), 19 states have internal predecessors, (2635), 0 states have call successors, (0), 0 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 11:58:03,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:03,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 202 [2022-09-16 11:58:03,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:04,112 INFO L130 PetriNetUnfolder]: 406/1606 cut-off events. [2022-09-16 11:58:04,113 INFO L131 PetriNetUnfolder]: For 258/258 co-relation queries the response was YES. [2022-09-16 11:58:04,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2928 conditions, 1606 events. 406/1606 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8888 event pairs, 72 based on Foata normal form. 4/1484 useless extension candidates. Maximal degree in co-relation 2593. Up to 260 conditions per place. [2022-09-16 11:58:04,121 INFO L137 encePairwiseOnDemand]: 186/202 looper letters, 92 selfloop transitions, 32 changer transitions 16/247 dead transitions. [2022-09-16 11:58:04,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 247 transitions, 1090 flow [2022-09-16 11:58:04,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-16 11:58:04,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-16 11:58:04,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2239 transitions. [2022-09-16 11:58:04,124 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.692759900990099 [2022-09-16 11:58:04,125 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2239 transitions. [2022-09-16 11:58:04,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2239 transitions. [2022-09-16 11:58:04,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:04,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2239 transitions. [2022-09-16 11:58:04,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 139.9375) internal successors, (2239), 16 states have internal predecessors, (2239), 0 states have call successors, (0), 0 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 11:58:04,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 202.0) internal successors, (3434), 17 states have internal predecessors, (3434), 0 states have call successors, (0), 0 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 11:58:04,133 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 202.0) internal successors, (3434), 17 states have internal predecessors, (3434), 0 states have call successors, (0), 0 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 11:58:04,133 INFO L175 Difference]: Start difference. First operand has 218 places, 207 transitions, 707 flow. Second operand 16 states and 2239 transitions. [2022-09-16 11:58:04,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 247 transitions, 1090 flow [2022-09-16 11:58:04,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 247 transitions, 1056 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-09-16 11:58:04,138 INFO L231 Difference]: Finished difference. Result has 228 places, 208 transitions, 765 flow [2022-09-16 11:58:04,138 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=765, PETRI_PLACES=228, PETRI_TRANSITIONS=208} [2022-09-16 11:58:04,139 INFO L287 CegarLoopForPetriNet]: 174 programPoint places, 54 predicate places. [2022-09-16 11:58:04,139 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 208 transitions, 765 flow [2022-09-16 11:58:04,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 138.68421052631578) internal successors, (2635), 19 states have internal predecessors, (2635), 0 states have call successors, (0), 0 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 11:58:04,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:04,140 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:04,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 11:58:04,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:04,356 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:58:04,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:04,356 INFO L85 PathProgramCache]: Analyzing trace with hash -976529380, now seen corresponding path program 2 times [2022-09-16 11:58:04,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:04,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51008252] [2022-09-16 11:58:04,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:04,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:04,421 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:58:04,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:04,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51008252] [2022-09-16 11:58:04,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51008252] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:04,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626500306] [2022-09-16 11:58:04,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:58:04,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:04,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:04,428 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 11:58:04,429 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 11:58:04,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:58:04,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:58:04,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:58:04,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:04,599 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-09-16 11:58:04,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:58:04,716 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-09-16 11:58:04,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626500306] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:58:04,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:58:04,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-09-16 11:58:04,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158728133] [2022-09-16 11:58:04,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:58:04,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:58:04,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:04,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:58:04,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:58:04,719 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 202 [2022-09-16 11:58:04,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 208 transitions, 765 flow. Second operand has 8 states, 8 states have (on average 168.125) internal successors, (1345), 8 states have internal predecessors, (1345), 0 states have call successors, (0), 0 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 11:58:04,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:04,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 202 [2022-09-16 11:58:04,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:04,952 INFO L130 PetriNetUnfolder]: 503/1812 cut-off events. [2022-09-16 11:58:04,952 INFO L131 PetriNetUnfolder]: For 464/464 co-relation queries the response was YES. [2022-09-16 11:58:04,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3391 conditions, 1812 events. 503/1812 cut-off events. For 464/464 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 10670 event pairs, 60 based on Foata normal form. 0/1697 useless extension candidates. Maximal degree in co-relation 3100. Up to 220 conditions per place. [2022-09-16 11:58:04,959 INFO L137 encePairwiseOnDemand]: 195/202 looper letters, 9 selfloop transitions, 4 changer transitions 85/237 dead transitions. [2022-09-16 11:58:04,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 237 transitions, 951 flow [2022-09-16 11:58:04,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:58:04,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:58:04,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1528 transitions. [2022-09-16 11:58:04,963 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8404840484048405 [2022-09-16 11:58:04,963 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1528 transitions. [2022-09-16 11:58:04,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1528 transitions. [2022-09-16 11:58:04,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:04,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1528 transitions. [2022-09-16 11:58:04,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 169.77777777777777) internal successors, (1528), 9 states have internal predecessors, (1528), 0 states have call successors, (0), 0 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 11:58:04,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 202.0) internal successors, (2020), 10 states have internal predecessors, (2020), 0 states have call successors, (0), 0 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 11:58:04,968 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 202.0) internal successors, (2020), 10 states have internal predecessors, (2020), 0 states have call successors, (0), 0 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 11:58:04,968 INFO L175 Difference]: Start difference. First operand has 228 places, 208 transitions, 765 flow. Second operand 9 states and 1528 transitions. [2022-09-16 11:58:04,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 237 transitions, 951 flow [2022-09-16 11:58:04,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 237 transitions, 892 flow, removed 6 selfloop flow, removed 11 redundant places. [2022-09-16 11:58:04,973 INFO L231 Difference]: Finished difference. Result has 222 places, 152 transitions, 581 flow [2022-09-16 11:58:04,973 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=581, PETRI_PLACES=222, PETRI_TRANSITIONS=152} [2022-09-16 11:58:04,974 INFO L287 CegarLoopForPetriNet]: 174 programPoint places, 48 predicate places. [2022-09-16 11:58:04,975 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 152 transitions, 581 flow [2022-09-16 11:58:04,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 168.125) internal successors, (1345), 8 states have internal predecessors, (1345), 0 states have call successors, (0), 0 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 11:58:04,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:04,975 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:04,994 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 11:58:05,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:05,188 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:58:05,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:05,188 INFO L85 PathProgramCache]: Analyzing trace with hash -387241114, now seen corresponding path program 1 times [2022-09-16 11:58:05,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:05,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892820389] [2022-09-16 11:58:05,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:05,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:05,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:05,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892820389] [2022-09-16 11:58:05,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892820389] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:05,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124698117] [2022-09-16 11:58:05,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:05,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:05,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:05,315 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 11:58:05,316 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 11:58:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:05,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 15 conjunts are in the unsatisfiable core [2022-09-16 11:58:05,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:05,450 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:05,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:58:05,648 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:05,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124698117] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:58:05,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:58:05,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-09-16 11:58:05,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621817655] [2022-09-16 11:58:05,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:58:05,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-09-16 11:58:05,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:05,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-09-16 11:58:05,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-09-16 11:58:05,652 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 202 [2022-09-16 11:58:05,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 152 transitions, 581 flow. Second operand has 32 states, 32 states have (on average 157.28125) internal successors, (5033), 32 states have internal predecessors, (5033), 0 states have call successors, (0), 0 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 11:58:05,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:05,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 202 [2022-09-16 11:58:05,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:06,285 INFO L130 PetriNetUnfolder]: 16/493 cut-off events. [2022-09-16 11:58:06,285 INFO L131 PetriNetUnfolder]: For 454/454 co-relation queries the response was YES. [2022-09-16 11:58:06,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1102 conditions, 493 events. 16/493 cut-off events. For 454/454 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 795 event pairs, 0 based on Foata normal form. 8/501 useless extension candidates. Maximal degree in co-relation 1087. Up to 37 conditions per place. [2022-09-16 11:58:06,288 INFO L137 encePairwiseOnDemand]: 190/202 looper letters, 140 selfloop transitions, 102 changer transitions 0/331 dead transitions. [2022-09-16 11:58:06,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 331 transitions, 1844 flow [2022-09-16 11:58:06,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-09-16 11:58:06,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-09-16 11:58:06,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7026 transitions. [2022-09-16 11:58:06,294 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7905040504050405 [2022-09-16 11:58:06,294 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7026 transitions. [2022-09-16 11:58:06,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7026 transitions. [2022-09-16 11:58:06,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:06,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7026 transitions. [2022-09-16 11:58:06,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.6818181818182) internal successors, (7026), 44 states have internal predecessors, (7026), 0 states have call successors, (0), 0 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 11:58:06,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 202.0) internal successors, (9090), 45 states have internal predecessors, (9090), 0 states have call successors, (0), 0 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 11:58:06,315 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 202.0) internal successors, (9090), 45 states have internal predecessors, (9090), 0 states have call successors, (0), 0 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 11:58:06,315 INFO L175 Difference]: Start difference. First operand has 222 places, 152 transitions, 581 flow. Second operand 44 states and 7026 transitions. [2022-09-16 11:58:06,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 331 transitions, 1844 flow [2022-09-16 11:58:06,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 331 transitions, 1835 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:58:06,325 INFO L231 Difference]: Finished difference. Result has 214 places, 212 transitions, 1241 flow [2022-09-16 11:58:06,325 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1241, PETRI_PLACES=214, PETRI_TRANSITIONS=212} [2022-09-16 11:58:06,326 INFO L287 CegarLoopForPetriNet]: 174 programPoint places, 40 predicate places. [2022-09-16 11:58:06,326 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 212 transitions, 1241 flow [2022-09-16 11:58:06,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 157.28125) internal successors, (5033), 32 states have internal predecessors, (5033), 0 states have call successors, (0), 0 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 11:58:06,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:06,328 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:06,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-16 11:58:06,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:06,544 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:58:06,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:06,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1952033434, now seen corresponding path program 2 times [2022-09-16 11:58:06,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:06,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187257028] [2022-09-16 11:58:06,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:06,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:06,909 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:06,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:06,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187257028] [2022-09-16 11:58:06,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187257028] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:06,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321072919] [2022-09-16 11:58:06,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:58:06,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:06,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:06,911 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:58:06,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-16 11:58:06,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:58:06,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:58:06,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:58:07,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:07,224 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-09-16 11:58:07,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:58:07,491 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-09-16 11:58:07,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321072919] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:58:07,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:58:07,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 7, 7] total 37 [2022-09-16 11:58:07,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113560145] [2022-09-16 11:58:07,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:58:07,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-09-16 11:58:07,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:07,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-09-16 11:58:07,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1093, Unknown=0, NotChecked=0, Total=1406 [2022-09-16 11:58:07,496 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 202 [2022-09-16 11:58:07,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 212 transitions, 1241 flow. Second operand has 38 states, 38 states have (on average 137.97368421052633) internal successors, (5243), 38 states have internal predecessors, (5243), 0 states have call successors, (0), 0 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 11:58:07,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:07,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 202 [2022-09-16 11:58:07,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:09,864 INFO L130 PetriNetUnfolder]: 18/541 cut-off events. [2022-09-16 11:58:09,864 INFO L131 PetriNetUnfolder]: For 984/984 co-relation queries the response was YES. [2022-09-16 11:58:09,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 541 events. 18/541 cut-off events. For 984/984 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 905 event pairs, 0 based on Foata normal form. 2/543 useless extension candidates. Maximal degree in co-relation 1386. Up to 42 conditions per place. [2022-09-16 11:58:09,866 INFO L137 encePairwiseOnDemand]: 184/202 looper letters, 0 selfloop transitions, 0 changer transitions 367/367 dead transitions. [2022-09-16 11:58:09,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 367 transitions, 2456 flow [2022-09-16 11:58:09,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-09-16 11:58:09,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2022-09-16 11:58:09,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 16113 transitions. [2022-09-16 11:58:09,881 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6759942943446887 [2022-09-16 11:58:09,881 INFO L72 ComplementDD]: Start complementDD. Operand 118 states and 16113 transitions. [2022-09-16 11:58:09,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 16113 transitions. [2022-09-16 11:58:09,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:09,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 118 states and 16113 transitions. [2022-09-16 11:58:09,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 119 states, 118 states have (on average 136.55084745762713) internal successors, (16113), 118 states have internal predecessors, (16113), 0 states have call successors, (0), 0 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 11:58:09,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 119 states, 119 states have (on average 202.0) internal successors, (24038), 119 states have internal predecessors, (24038), 0 states have call successors, (0), 0 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 11:58:09,936 INFO L81 ComplementDD]: Finished complementDD. Result has 119 states, 119 states have (on average 202.0) internal successors, (24038), 119 states have internal predecessors, (24038), 0 states have call successors, (0), 0 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 11:58:09,937 INFO L175 Difference]: Start difference. First operand has 214 places, 212 transitions, 1241 flow. Second operand 118 states and 16113 transitions. [2022-09-16 11:58:09,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 367 transitions, 2456 flow [2022-09-16 11:58:09,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 367 transitions, 2333 flow, removed 3 selfloop flow, removed 29 redundant places. [2022-09-16 11:58:09,944 INFO L231 Difference]: Finished difference. Result has 301 places, 0 transitions, 0 flow [2022-09-16 11:58:09,945 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=118, PETRI_FLOW=0, PETRI_PLACES=301, PETRI_TRANSITIONS=0} [2022-09-16 11:58:09,945 INFO L287 CegarLoopForPetriNet]: 174 programPoint places, 127 predicate places. [2022-09-16 11:58:09,946 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 0 transitions, 0 flow [2022-09-16 11:58:09,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 137.97368421052633) internal successors, (5243), 38 states have internal predecessors, (5243), 0 states have call successors, (0), 0 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 11:58:09,949 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-09-16 11:58:09,949 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-09-16 11:58:09,949 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-09-16 11:58:09,949 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-09-16 11:58:09,949 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-09-16 11:58:09,949 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-09-16 11:58:09,949 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-09-16 11:58:09,949 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-09-16 11:58:09,949 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-09-16 11:58:09,949 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-09-16 11:58:09,950 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2022-09-16 11:58:09,950 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2022-09-16 11:58:09,950 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-09-16 11:58:09,950 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-09-16 11:58:09,950 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-09-16 11:58:09,950 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-09-16 11:58:09,950 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-09-16 11:58:09,950 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-09-16 11:58:09,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-16 11:58:10,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-09-16 11:58:10,164 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1] [2022-09-16 11:58:10,168 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:58:10,168 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:58:10,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:58:10 BasicIcfg [2022-09-16 11:58:10,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:58:10,172 INFO L158 Benchmark]: Toolchain (without parser) took 12992.65ms. Allocated memory was 181.4MB in the beginning and 342.9MB in the end (delta: 161.5MB). Free memory was 125.0MB in the beginning and 126.1MB in the end (delta: -1.2MB). Peak memory consumption was 160.6MB. Max. memory is 8.0GB. [2022-09-16 11:58:10,172 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory was 141.6MB in the beginning and 141.5MB in the end (delta: 81.0kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:58:10,172 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.89ms. Allocated memory is still 181.4MB. Free memory was 124.8MB in the beginning and 155.8MB in the end (delta: -31.0MB). Peak memory consumption was 14.3MB. Max. memory is 8.0GB. [2022-09-16 11:58:10,172 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.25ms. Allocated memory is still 181.4MB. Free memory was 155.8MB in the beginning and 153.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:58:10,173 INFO L158 Benchmark]: Boogie Preprocessor took 38.39ms. Allocated memory is still 181.4MB. Free memory was 153.4MB in the beginning and 151.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 11:58:10,173 INFO L158 Benchmark]: RCFGBuilder took 563.86ms. Allocated memory is still 181.4MB. Free memory was 151.9MB in the beginning and 124.8MB in the end (delta: 27.1MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2022-09-16 11:58:10,173 INFO L158 Benchmark]: TraceAbstraction took 12053.93ms. Allocated memory was 181.4MB in the beginning and 342.9MB in the end (delta: 161.5MB). Free memory was 124.3MB in the beginning and 126.1MB in the end (delta: -1.8MB). Peak memory consumption was 159.9MB. Max. memory is 8.0GB. [2022-09-16 11:58:10,174 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory was 141.6MB in the beginning and 141.5MB in the end (delta: 81.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 292.89ms. Allocated memory is still 181.4MB. Free memory was 124.8MB in the beginning and 155.8MB in the end (delta: -31.0MB). Peak memory consumption was 14.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.25ms. Allocated memory is still 181.4MB. Free memory was 155.8MB in the beginning and 153.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.39ms. Allocated memory is still 181.4MB. Free memory was 153.4MB in the beginning and 151.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 563.86ms. Allocated memory is still 181.4MB. Free memory was 151.9MB in the beginning and 124.8MB in the end (delta: 27.1MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * TraceAbstraction took 12053.93ms. Allocated memory was 181.4MB in the beginning and 342.9MB in the end (delta: 161.5MB). Free memory was 124.3MB in the beginning and 126.1MB in the end (delta: -1.8MB). Peak memory consumption was 159.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 218 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.0s, OverallIterations: 10, TraceHistogramMax: 15, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2550 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2550 mSDsluCounter, 519 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 636 mSDsCounter, 637 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2028 IncrementalHoareTripleChecker+Invalid, 2665 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 637 mSolverCounterUnsat, 111 mSDtfsCounter, 2028 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2080 GetRequests, 1712 SyntacticMatches, 14 SemanticMatches, 354 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10300 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1241occurred in iteration=9, InterpolantAutomatonStates: 277, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 2128 NumberOfCodeBlocks, 1938 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 2895 ConstructedInterpolants, 0 QuantifiedInterpolants, 7387 SizeOfPredicates, 47 NumberOfNonLiveVariables, 1740 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 24 InterpolantComputations, 4 PerfectInterpolantSequences, 1852/3594 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:58:10,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...