/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/parallel-parallel-sum-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:50:24,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:50:24,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:50:24,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:50:24,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:50:24,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:50:24,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:50:24,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:50:24,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:50:24,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:50:24,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:50:24,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:50:24,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:50:24,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:50:24,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:50:24,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:50:24,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:50:24,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:50:24,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:50:24,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:50:24,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:50:24,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:50:24,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:50:24,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:50:24,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:50:24,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:50:24,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:50:24,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:50:24,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:50:24,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:50:24,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:50:24,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:50:24,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:50:24,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:50:24,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:50:24,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:50:24,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:50:24,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:50:24,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:50:24,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:50:24,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:50:24,433 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 11:50:24,470 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:50:24,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:50:24,477 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:50:24,477 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:50:24,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:50:24,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:50:24,478 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:50:24,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:50:24,478 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:50:24,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:50:24,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:50:24,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:50:24,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:50:24,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:50:24,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:50:24,480 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:50:24,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:50:24,480 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:50:24,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:50:24,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:50:24,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:50:24,481 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:50:24,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:50:24,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:50:24,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:50:24,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:50:24,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:50:24,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:50:24,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:50:24,483 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:50:24,483 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:50:24,484 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:50:24,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:50:24,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:50:24,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:50:24,771 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:50:24,771 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:50:24,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c [2022-09-16 11:50:24,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63429942f/e415b330ebdc4c5bb89a3e7dd9d2df00/FLAGfac50fc08 [2022-09-16 11:50:25,299 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:50:25,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c [2022-09-16 11:50:25,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63429942f/e415b330ebdc4c5bb89a3e7dd9d2df00/FLAGfac50fc08 [2022-09-16 11:50:25,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63429942f/e415b330ebdc4c5bb89a3e7dd9d2df00 [2022-09-16 11:50:25,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:50:25,326 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:50:25,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:50:25,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:50:25,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:50:25,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:50:25" (1/1) ... [2022-09-16 11:50:25,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25f375a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:25, skipping insertion in model container [2022-09-16 11:50:25,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:50:25" (1/1) ... [2022-09-16 11:50:25,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:50:25,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:50:25,547 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/parallel-parallel-sum-1.wvr.c[3642,3655] [2022-09-16 11:50:25,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:50:25,561 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:50:25,589 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/parallel-parallel-sum-1.wvr.c[3642,3655] [2022-09-16 11:50:25,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:50:25,611 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:50:25,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:25 WrapperNode [2022-09-16 11:50:25,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:50:25,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:50:25,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:50:25,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:50:25,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:25" (1/1) ... [2022-09-16 11:50:25,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:25" (1/1) ... [2022-09-16 11:50:25,671 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 365 [2022-09-16 11:50:25,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:50:25,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:50:25,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:50:25,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:50:25,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:25" (1/1) ... [2022-09-16 11:50:25,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:25" (1/1) ... [2022-09-16 11:50:25,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:25" (1/1) ... [2022-09-16 11:50:25,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:25" (1/1) ... [2022-09-16 11:50:25,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:25" (1/1) ... [2022-09-16 11:50:25,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:25" (1/1) ... [2022-09-16 11:50:25,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:25" (1/1) ... [2022-09-16 11:50:25,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:50:25,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:50:25,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:50:25,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:50:25,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:25" (1/1) ... [2022-09-16 11:50:25,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:50:25,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:25,749 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 11:50:25,779 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 11:50:25,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:50:25,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:50:25,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:50:25,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:50:25,795 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:50:25,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:50:25,795 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:50:25,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:50:25,795 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:50:25,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:50:25,795 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-16 11:50:25,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-16 11:50:25,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:50:25,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:50:25,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:50:25,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:50:25,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:50:25,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:50:25,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:50:25,798 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 11:50:25,905 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:50:25,921 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:50:26,390 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:50:26,811 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:50:26,811 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-09-16 11:50:26,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:50:26 BoogieIcfgContainer [2022-09-16 11:50:26,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:50:26,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:50:26,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:50:26,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:50:26,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:50:25" (1/3) ... [2022-09-16 11:50:26,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57952f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:50:26, skipping insertion in model container [2022-09-16 11:50:26,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:25" (2/3) ... [2022-09-16 11:50:26,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57952f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:50:26, skipping insertion in model container [2022-09-16 11:50:26,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:50:26" (3/3) ... [2022-09-16 11:50:26,821 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2022-09-16 11:50:26,837 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:50:26,838 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-09-16 11:50:26,838 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:50:26,984 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-16 11:50:27,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 245 transitions, 522 flow [2022-09-16 11:50:27,135 INFO L130 PetriNetUnfolder]: 15/241 cut-off events. [2022-09-16 11:50:27,135 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-16 11:50:27,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 241 events. 15/241 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 264 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 194. Up to 2 conditions per place. [2022-09-16 11:50:27,142 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 245 transitions, 522 flow [2022-09-16 11:50:27,152 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 218 transitions, 457 flow [2022-09-16 11:50:27,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:50:27,172 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;@619d9a49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:50:27,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2022-09-16 11:50:27,188 INFO L130 PetriNetUnfolder]: 1/61 cut-off events. [2022-09-16 11:50:27,189 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:50:27,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:27,190 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] [2022-09-16 11:50:27,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2022-09-16 11:50:27,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:27,195 INFO L85 PathProgramCache]: Analyzing trace with hash 84806038, now seen corresponding path program 1 times [2022-09-16 11:50:27,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:27,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523664199] [2022-09-16 11:50:27,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:27,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:27,492 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 11:50:27,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:27,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523664199] [2022-09-16 11:50:27,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523664199] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:27,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:27,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:50:27,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646553343] [2022-09-16 11:50:27,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:27,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:50:27,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:27,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:50:27,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:50:27,556 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 245 [2022-09-16 11:50:27,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 218 transitions, 457 flow. Second operand has 5 states, 5 states have (on average 155.4) internal successors, (777), 5 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:27,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:27,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 245 [2022-09-16 11:50:27,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:30,717 INFO L130 PetriNetUnfolder]: 9473/12832 cut-off events. [2022-09-16 11:50:30,718 INFO L131 PetriNetUnfolder]: For 1597/1599 co-relation queries the response was YES. [2022-09-16 11:50:30,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26734 conditions, 12832 events. 9473/12832 cut-off events. For 1597/1599 co-relation queries the response was YES. Maximal size of possible extension queue 1361. Compared 76164 event pairs, 7776 based on Foata normal form. 1701/5999 useless extension candidates. Maximal degree in co-relation 26156. Up to 12692 conditions per place. [2022-09-16 11:50:30,868 INFO L137 encePairwiseOnDemand]: 218/245 looper letters, 52 selfloop transitions, 5 changer transitions 4/196 dead transitions. [2022-09-16 11:50:30,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 196 transitions, 535 flow [2022-09-16 11:50:30,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:50:30,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:50:30,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 853 transitions. [2022-09-16 11:50:30,883 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6963265306122449 [2022-09-16 11:50:30,884 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 853 transitions. [2022-09-16 11:50:30,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 853 transitions. [2022-09-16 11:50:30,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:30,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 853 transitions. [2022-09-16 11:50:30,893 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 11:50:30,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 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 11:50:30,900 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 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 11:50:30,902 INFO L175 Difference]: Start difference. First operand has 217 places, 218 transitions, 457 flow. Second operand 5 states and 853 transitions. [2022-09-16 11:50:30,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 196 transitions, 535 flow [2022-09-16 11:50:30,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 196 transitions, 522 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-16 11:50:30,910 INFO L231 Difference]: Finished difference. Result has 201 places, 192 transitions, 402 flow [2022-09-16 11:50:30,912 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=402, PETRI_PLACES=201, PETRI_TRANSITIONS=192} [2022-09-16 11:50:30,915 INFO L287 CegarLoopForPetriNet]: 217 programPoint places, -16 predicate places. [2022-09-16 11:50:30,915 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 192 transitions, 402 flow [2022-09-16 11:50:30,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.4) internal successors, (777), 5 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:30,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:30,916 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] [2022-09-16 11:50:30,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:50:30,917 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2022-09-16 11:50:30,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:30,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1665979051, now seen corresponding path program 1 times [2022-09-16 11:50:30,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:30,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284201136] [2022-09-16 11:50:30,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:30,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:30,995 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 11:50:30,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:30,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284201136] [2022-09-16 11:50:30,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284201136] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:30,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:30,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:50:30,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252002989] [2022-09-16 11:50:30,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:30,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:50:30,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:30,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:50:30,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:50:30,999 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 245 [2022-09-16 11:50:31,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 192 transitions, 402 flow. Second operand has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:31,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:31,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 245 [2022-09-16 11:50:31,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:33,508 INFO L130 PetriNetUnfolder]: 9473/12827 cut-off events. [2022-09-16 11:50:33,508 INFO L131 PetriNetUnfolder]: For 401/403 co-relation queries the response was YES. [2022-09-16 11:50:33,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26258 conditions, 12827 events. 9473/12827 cut-off events. For 401/403 co-relation queries the response was YES. Maximal size of possible extension queue 1361. Compared 75642 event pairs, 7776 based on Foata normal form. 0/4298 useless extension candidates. Maximal degree in co-relation 26186. Up to 12678 conditions per place. [2022-09-16 11:50:33,611 INFO L137 encePairwiseOnDemand]: 241/245 looper letters, 41 selfloop transitions, 3 changer transitions 0/191 dead transitions. [2022-09-16 11:50:33,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 191 transitions, 488 flow [2022-09-16 11:50:33,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:50:33,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:50:33,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 741 transitions. [2022-09-16 11:50:33,614 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7561224489795918 [2022-09-16 11:50:33,615 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 741 transitions. [2022-09-16 11:50:33,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 741 transitions. [2022-09-16 11:50:33,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:33,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 741 transitions. [2022-09-16 11:50:33,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 185.25) internal successors, (741), 4 states have internal predecessors, (741), 0 states have call successors, (0), 0 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 11:50:33,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 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 11:50:33,620 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 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 11:50:33,620 INFO L175 Difference]: Start difference. First operand has 201 places, 192 transitions, 402 flow. Second operand 4 states and 741 transitions. [2022-09-16 11:50:33,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 191 transitions, 488 flow [2022-09-16 11:50:33,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 191 transitions, 478 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:50:33,624 INFO L231 Difference]: Finished difference. Result has 195 places, 191 transitions, 396 flow [2022-09-16 11:50:33,625 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=396, PETRI_PLACES=195, PETRI_TRANSITIONS=191} [2022-09-16 11:50:33,626 INFO L287 CegarLoopForPetriNet]: 217 programPoint places, -22 predicate places. [2022-09-16 11:50:33,627 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 191 transitions, 396 flow [2022-09-16 11:50:33,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:33,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:33,627 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] [2022-09-16 11:50:33,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:50:33,628 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2022-09-16 11:50:33,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:33,628 INFO L85 PathProgramCache]: Analyzing trace with hash 567859042, now seen corresponding path program 1 times [2022-09-16 11:50:33,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:33,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013681098] [2022-09-16 11:50:33,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:33,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:33,717 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 11:50:33,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:33,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013681098] [2022-09-16 11:50:33,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013681098] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:33,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:33,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:50:33,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556525261] [2022-09-16 11:50:33,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:33,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:50:33,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:33,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:50:33,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:50:33,720 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 245 [2022-09-16 11:50:33,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 191 transitions, 396 flow. Second operand has 4 states, 4 states have (on average 175.5) internal successors, (702), 4 states have internal predecessors, (702), 0 states have call successors, (0), 0 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 11:50:33,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:33,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 245 [2022-09-16 11:50:33,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:37,408 INFO L130 PetriNetUnfolder]: 18945/25570 cut-off events. [2022-09-16 11:50:37,408 INFO L131 PetriNetUnfolder]: For 798/802 co-relation queries the response was YES. [2022-09-16 11:50:37,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52424 conditions, 25570 events. 18945/25570 cut-off events. For 798/802 co-relation queries the response was YES. Maximal size of possible extension queue 1657. Compared 158825 event pairs, 15552 based on Foata normal form. 0/8514 useless extension candidates. Maximal degree in co-relation 52365. Up to 12684 conditions per place. [2022-09-16 11:50:37,624 INFO L137 encePairwiseOnDemand]: 239/245 looper letters, 86 selfloop transitions, 4 changer transitions 0/234 dead transitions. [2022-09-16 11:50:37,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 234 transitions, 670 flow [2022-09-16 11:50:37,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:50:37,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:50:37,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 962 transitions. [2022-09-16 11:50:37,628 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7853061224489796 [2022-09-16 11:50:37,628 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 962 transitions. [2022-09-16 11:50:37,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 962 transitions. [2022-09-16 11:50:37,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:37,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 962 transitions. [2022-09-16 11:50:37,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 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 11:50:37,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 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 11:50:37,636 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 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 11:50:37,636 INFO L175 Difference]: Start difference. First operand has 195 places, 191 transitions, 396 flow. Second operand 5 states and 962 transitions. [2022-09-16 11:50:37,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 234 transitions, 670 flow [2022-09-16 11:50:37,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 234 transitions, 664 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:50:37,641 INFO L231 Difference]: Finished difference. Result has 199 places, 194 transitions, 420 flow [2022-09-16 11:50:37,642 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=199, PETRI_TRANSITIONS=194} [2022-09-16 11:50:37,644 INFO L287 CegarLoopForPetriNet]: 217 programPoint places, -18 predicate places. [2022-09-16 11:50:37,644 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 194 transitions, 420 flow [2022-09-16 11:50:37,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.5) internal successors, (702), 4 states have internal predecessors, (702), 0 states have call successors, (0), 0 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 11:50:37,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:37,645 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, 1, 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 11:50:37,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:50:37,645 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2022-09-16 11:50:37,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:37,646 INFO L85 PathProgramCache]: Analyzing trace with hash -790888362, now seen corresponding path program 1 times [2022-09-16 11:50:37,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:37,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851839557] [2022-09-16 11:50:37,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:37,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:37,782 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 11:50:37,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:37,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851839557] [2022-09-16 11:50:37,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851839557] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:37,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952408487] [2022-09-16 11:50:37,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:37,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:37,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:37,785 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 11:50:37,812 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 11:50:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:37,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:50:37,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:50:38,082 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 11:50:38,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:50:38,167 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 11:50:38,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952408487] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:50:38,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:50:38,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:50:38,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944440764] [2022-09-16 11:50:38,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:50:38,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:50:38,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:38,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:50:38,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:50:38,294 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 245 [2022-09-16 11:50:38,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 194 transitions, 420 flow. Second operand has 12 states, 12 states have (on average 176.66666666666666) internal successors, (2120), 12 states have internal predecessors, (2120), 0 states have call successors, (0), 0 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 11:50:38,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:38,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 245 [2022-09-16 11:50:38,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:48,220 INFO L130 PetriNetUnfolder]: 47361/63801 cut-off events. [2022-09-16 11:50:48,220 INFO L131 PetriNetUnfolder]: For 2006/2016 co-relation queries the response was YES. [2022-09-16 11:50:48,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130946 conditions, 63801 events. 47361/63801 cut-off events. For 2006/2016 co-relation queries the response was YES. Maximal size of possible extension queue 1790. Compared 410727 event pairs, 38880 based on Foata normal form. 3/21169 useless extension candidates. Maximal degree in co-relation 104684. Up to 12679 conditions per place. [2022-09-16 11:50:48,788 INFO L137 encePairwiseOnDemand]: 238/245 looper letters, 203 selfloop transitions, 18 changer transitions 0/365 dead transitions. [2022-09-16 11:50:48,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 365 transitions, 1258 flow [2022-09-16 11:50:48,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:50:48,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:50:48,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3356 transitions. [2022-09-16 11:50:48,805 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7609977324263039 [2022-09-16 11:50:48,810 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3356 transitions. [2022-09-16 11:50:48,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3356 transitions. [2022-09-16 11:50:48,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:48,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3356 transitions. [2022-09-16 11:50:48,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 186.44444444444446) internal successors, (3356), 18 states have internal predecessors, (3356), 0 states have call successors, (0), 0 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 11:50:48,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 245.0) internal successors, (4655), 19 states have internal predecessors, (4655), 0 states have call successors, (0), 0 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 11:50:48,831 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 245.0) internal successors, (4655), 19 states have internal predecessors, (4655), 0 states have call successors, (0), 0 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 11:50:48,831 INFO L175 Difference]: Start difference. First operand has 199 places, 194 transitions, 420 flow. Second operand 18 states and 3356 transitions. [2022-09-16 11:50:48,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 365 transitions, 1258 flow [2022-09-16 11:50:48,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 365 transitions, 1256 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:50:48,838 INFO L231 Difference]: Finished difference. Result has 219 places, 206 transitions, 524 flow [2022-09-16 11:50:48,839 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=524, PETRI_PLACES=219, PETRI_TRANSITIONS=206} [2022-09-16 11:50:48,840 INFO L287 CegarLoopForPetriNet]: 217 programPoint places, 2 predicate places. [2022-09-16 11:50:48,840 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 206 transitions, 524 flow [2022-09-16 11:50:48,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.66666666666666) internal successors, (2120), 12 states have internal predecessors, (2120), 0 states have call successors, (0), 0 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 11:50:48,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:48,842 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, 1, 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 11:50:48,867 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 11:50:49,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:49,056 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2022-09-16 11:50:49,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:49,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1252265737, now seen corresponding path program 1 times [2022-09-16 11:50:49,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:49,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175836571] [2022-09-16 11:50:49,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:49,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:49,153 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 11:50:49,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:49,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175836571] [2022-09-16 11:50:49,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175836571] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:49,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914177192] [2022-09-16 11:50:49,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:49,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:49,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:49,161 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 11:50:49,162 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 11:50:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:49,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:50:49,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:50:49,358 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 11:50:49,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:50:49,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914177192] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:49,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:50:49,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:50:49,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66677391] [2022-09-16 11:50:49,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:49,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:50:49,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:49,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:50:49,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:50:49,362 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 245 [2022-09-16 11:50:49,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 206 transitions, 524 flow. Second operand has 6 states, 6 states have (on average 176.33333333333334) internal successors, (1058), 6 states have internal predecessors, (1058), 0 states have call successors, (0), 0 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 11:50:49,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:49,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 245 [2022-09-16 11:50:49,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:59,095 INFO L130 PetriNetUnfolder]: 47361/63797 cut-off events. [2022-09-16 11:50:59,095 INFO L131 PetriNetUnfolder]: For 2042/2052 co-relation queries the response was YES. [2022-09-16 11:50:59,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130964 conditions, 63797 events. 47361/63797 cut-off events. For 2042/2052 co-relation queries the response was YES. Maximal size of possible extension queue 1791. Compared 410594 event pairs, 38880 based on Foata normal form. 4/21166 useless extension candidates. Maximal degree in co-relation 104762. Up to 50700 conditions per place. [2022-09-16 11:50:59,616 INFO L137 encePairwiseOnDemand]: 240/245 looper letters, 87 selfloop transitions, 11 changer transitions 0/242 dead transitions. [2022-09-16 11:50:59,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 242 transitions, 783 flow [2022-09-16 11:50:59,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:50:59,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:50:59,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1308 transitions. [2022-09-16 11:50:59,620 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7626822157434402 [2022-09-16 11:50:59,620 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1308 transitions. [2022-09-16 11:50:59,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1308 transitions. [2022-09-16 11:50:59,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:59,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1308 transitions. [2022-09-16 11:50:59,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 186.85714285714286) internal successors, (1308), 7 states have internal predecessors, (1308), 0 states have call successors, (0), 0 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 11:50:59,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 0 states have call successors, (0), 0 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 11:50:59,627 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 0 states have call successors, (0), 0 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 11:50:59,627 INFO L175 Difference]: Start difference. First operand has 219 places, 206 transitions, 524 flow. Second operand 7 states and 1308 transitions. [2022-09-16 11:50:59,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 242 transitions, 783 flow [2022-09-16 11:50:59,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 242 transitions, 751 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 11:50:59,633 INFO L231 Difference]: Finished difference. Result has 215 places, 202 transitions, 487 flow [2022-09-16 11:50:59,634 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=487, PETRI_PLACES=215, PETRI_TRANSITIONS=202} [2022-09-16 11:50:59,635 INFO L287 CegarLoopForPetriNet]: 217 programPoint places, -2 predicate places. [2022-09-16 11:50:59,635 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 202 transitions, 487 flow [2022-09-16 11:50:59,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.33333333333334) internal successors, (1058), 6 states have internal predecessors, (1058), 0 states have call successors, (0), 0 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 11:50:59,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:59,636 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] [2022-09-16 11:50:59,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-09-16 11:50:59,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:59,859 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2022-09-16 11:50:59,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:59,860 INFO L85 PathProgramCache]: Analyzing trace with hash -894364531, now seen corresponding path program 1 times [2022-09-16 11:50:59,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:59,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437036081] [2022-09-16 11:50:59,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:59,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:59,942 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 11:50:59,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:59,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437036081] [2022-09-16 11:50:59,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437036081] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:59,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:59,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:50:59,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350140927] [2022-09-16 11:50:59,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:59,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:50:59,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:59,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:50:59,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:50:59,950 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 245 [2022-09-16 11:50:59,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 202 transitions, 487 flow. Second operand has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 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 11:50:59,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:59,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 245 [2022-09-16 11:50:59,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:06,533 INFO L130 PetriNetUnfolder]: 35571/48052 cut-off events. [2022-09-16 11:51:06,533 INFO L131 PetriNetUnfolder]: For 1772/1777 co-relation queries the response was YES. [2022-09-16 11:51:06,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98456 conditions, 48052 events. 35571/48052 cut-off events. For 1772/1777 co-relation queries the response was YES. Maximal size of possible extension queue 1250. Compared 295761 event pairs, 28705 based on Foata normal form. 0/17192 useless extension candidates. Maximal degree in co-relation 78763. Up to 47618 conditions per place. [2022-09-16 11:51:06,912 INFO L137 encePairwiseOnDemand]: 240/245 looper letters, 36 selfloop transitions, 3 changer transitions 0/200 dead transitions. [2022-09-16 11:51:06,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 200 transitions, 561 flow [2022-09-16 11:51:06,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:51:06,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:51:06,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 757 transitions. [2022-09-16 11:51:06,914 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7724489795918368 [2022-09-16 11:51:06,914 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 757 transitions. [2022-09-16 11:51:06,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 757 transitions. [2022-09-16 11:51:06,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:06,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 757 transitions. [2022-09-16 11:51:06,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 189.25) internal successors, (757), 4 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:06,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 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 11:51:06,919 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 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 11:51:06,919 INFO L175 Difference]: Start difference. First operand has 215 places, 202 transitions, 487 flow. Second operand 4 states and 757 transitions. [2022-09-16 11:51:06,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 200 transitions, 561 flow [2022-09-16 11:51:06,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 200 transitions, 547 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:51:06,924 INFO L231 Difference]: Finished difference. Result has 211 places, 200 transitions, 475 flow [2022-09-16 11:51:06,925 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=475, PETRI_PLACES=211, PETRI_TRANSITIONS=200} [2022-09-16 11:51:06,925 INFO L287 CegarLoopForPetriNet]: 217 programPoint places, -6 predicate places. [2022-09-16 11:51:06,926 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 200 transitions, 475 flow [2022-09-16 11:51:06,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 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 11:51:06,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:06,926 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] [2022-09-16 11:51:06,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:51:06,926 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2022-09-16 11:51:06,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:06,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1955495448, now seen corresponding path program 1 times [2022-09-16 11:51:06,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:06,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591459157] [2022-09-16 11:51:06,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:06,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:07,000 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 11:51:07,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:07,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591459157] [2022-09-16 11:51:07,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591459157] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:07,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:07,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:51:07,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442083965] [2022-09-16 11:51:07,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:07,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:51:07,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:07,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:51:07,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:51:07,003 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 245 [2022-09-16 11:51:07,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 200 transitions, 475 flow. Second operand has 4 states, 4 states have (on average 181.25) internal successors, (725), 4 states have internal predecessors, (725), 0 states have call successors, (0), 0 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 11:51:07,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:07,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 245 [2022-09-16 11:51:07,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:11,796 INFO L130 PetriNetUnfolder]: 25481/34577 cut-off events. [2022-09-16 11:51:11,796 INFO L131 PetriNetUnfolder]: For 1522/1527 co-relation queries the response was YES. [2022-09-16 11:51:11,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70672 conditions, 34577 events. 25481/34577 cut-off events. For 1522/1527 co-relation queries the response was YES. Maximal size of possible extension queue 921. Compared 208769 event pairs, 20080 based on Foata normal form. 0/13597 useless extension candidates. Maximal degree in co-relation 70630. Up to 34143 conditions per place. [2022-09-16 11:51:12,118 INFO L137 encePairwiseOnDemand]: 240/245 looper letters, 34 selfloop transitions, 3 changer transitions 0/198 dead transitions. [2022-09-16 11:51:12,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 198 transitions, 545 flow [2022-09-16 11:51:12,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:51:12,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:51:12,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 755 transitions. [2022-09-16 11:51:12,120 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7704081632653061 [2022-09-16 11:51:12,120 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 755 transitions. [2022-09-16 11:51:12,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 755 transitions. [2022-09-16 11:51:12,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:12,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 755 transitions. [2022-09-16 11:51:12,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 0 states have call successors, (0), 0 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 11:51:12,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 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 11:51:12,124 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 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 11:51:12,124 INFO L175 Difference]: Start difference. First operand has 211 places, 200 transitions, 475 flow. Second operand 4 states and 755 transitions. [2022-09-16 11:51:12,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 198 transitions, 545 flow [2022-09-16 11:51:12,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 198 transitions, 539 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:51:12,133 INFO L231 Difference]: Finished difference. Result has 209 places, 198 transitions, 471 flow [2022-09-16 11:51:12,134 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=471, PETRI_PLACES=209, PETRI_TRANSITIONS=198} [2022-09-16 11:51:12,135 INFO L287 CegarLoopForPetriNet]: 217 programPoint places, -8 predicate places. [2022-09-16 11:51:12,135 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 198 transitions, 471 flow [2022-09-16 11:51:12,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.25) internal successors, (725), 4 states have internal predecessors, (725), 0 states have call successors, (0), 0 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 11:51:12,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:12,137 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] [2022-09-16 11:51:12,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:51:12,137 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2022-09-16 11:51:12,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:12,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1955495453, now seen corresponding path program 1 times [2022-09-16 11:51:12,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:12,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745017265] [2022-09-16 11:51:12,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:12,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:12,279 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 11:51:12,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:12,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745017265] [2022-09-16 11:51:12,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745017265] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:12,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:12,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-16 11:51:12,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039797810] [2022-09-16 11:51:12,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:12,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-16 11:51:12,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:12,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-16 11:51:12,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:51:12,282 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 245 [2022-09-16 11:51:12,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 198 transitions, 471 flow. Second operand has 9 states, 9 states have (on average 146.44444444444446) internal successors, (1318), 9 states have internal predecessors, (1318), 0 states have call successors, (0), 0 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 11:51:12,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:12,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 245 [2022-09-16 11:51:12,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:16,442 INFO L130 PetriNetUnfolder]: 20645/28173 cut-off events. [2022-09-16 11:51:16,442 INFO L131 PetriNetUnfolder]: For 1345/1349 co-relation queries the response was YES. [2022-09-16 11:51:16,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57558 conditions, 28173 events. 20645/28173 cut-off events. For 1345/1349 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 169992 event pairs, 16280 based on Foata normal form. 164/11318 useless extension candidates. Maximal degree in co-relation 57497. Up to 27355 conditions per place. [2022-09-16 11:51:16,654 INFO L137 encePairwiseOnDemand]: 235/245 looper letters, 91 selfloop transitions, 8 changer transitions 0/226 dead transitions. [2022-09-16 11:51:16,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 226 transitions, 733 flow [2022-09-16 11:51:16,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:51:16,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:51:16,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1382 transitions. [2022-09-16 11:51:16,657 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6267573696145124 [2022-09-16 11:51:16,657 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1382 transitions. [2022-09-16 11:51:16,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1382 transitions. [2022-09-16 11:51:16,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:16,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1382 transitions. [2022-09-16 11:51:16,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 153.55555555555554) internal successors, (1382), 9 states have internal predecessors, (1382), 0 states have call successors, (0), 0 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 11:51:16,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 245.0) internal successors, (2450), 10 states have internal predecessors, (2450), 0 states have call successors, (0), 0 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 11:51:16,665 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 245.0) internal successors, (2450), 10 states have internal predecessors, (2450), 0 states have call successors, (0), 0 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 11:51:16,665 INFO L175 Difference]: Start difference. First operand has 209 places, 198 transitions, 471 flow. Second operand 9 states and 1382 transitions. [2022-09-16 11:51:16,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 226 transitions, 733 flow [2022-09-16 11:51:16,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 226 transitions, 727 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:51:16,669 INFO L231 Difference]: Finished difference. Result has 219 places, 202 transitions, 511 flow [2022-09-16 11:51:16,670 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=511, PETRI_PLACES=219, PETRI_TRANSITIONS=202} [2022-09-16 11:51:16,670 INFO L287 CegarLoopForPetriNet]: 217 programPoint places, 2 predicate places. [2022-09-16 11:51:16,671 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 202 transitions, 511 flow [2022-09-16 11:51:16,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 146.44444444444446) internal successors, (1318), 9 states have internal predecessors, (1318), 0 states have call successors, (0), 0 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 11:51:16,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:16,671 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, 1, 1] [2022-09-16 11:51:16,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:51:16,672 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2022-09-16 11:51:16,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:16,672 INFO L85 PathProgramCache]: Analyzing trace with hash 653258711, now seen corresponding path program 1 times [2022-09-16 11:51:16,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:16,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592358923] [2022-09-16 11:51:16,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:16,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:16,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:16,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:16,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592358923] [2022-09-16 11:51:16,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592358923] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:51:16,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417264743] [2022-09-16 11:51:16,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:16,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:51:16,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:51:16,801 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 11:51:16,804 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 11:51:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:16,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 16 conjunts are in the unsatisfiable core [2022-09-16 11:51:16,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:51:17,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:17,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:51:17,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:17,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417264743] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:51:17,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:51:17,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-09-16 11:51:17,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791410765] [2022-09-16 11:51:17,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:51:17,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-09-16 11:51:17,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:17,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-09-16 11:51:17,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2022-09-16 11:51:17,359 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 245 [2022-09-16 11:51:17,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 202 transitions, 511 flow. Second operand has 22 states, 22 states have (on average 141.36363636363637) internal successors, (3110), 22 states have internal predecessors, (3110), 0 states have call successors, (0), 0 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 11:51:17,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:17,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 245 [2022-09-16 11:51:17,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:21,012 INFO L130 PetriNetUnfolder]: 15809/21769 cut-off events. [2022-09-16 11:51:21,012 INFO L131 PetriNetUnfolder]: For 3141/3144 co-relation queries the response was YES. [2022-09-16 11:51:21,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46292 conditions, 21769 events. 15809/21769 cut-off events. For 3141/3144 co-relation queries the response was YES. Maximal size of possible extension queue 920. Compared 130534 event pairs, 12480 based on Foata normal form. 164/8880 useless extension candidates. Maximal degree in co-relation 45210. Up to 20513 conditions per place. [2022-09-16 11:51:21,225 INFO L137 encePairwiseOnDemand]: 230/245 looper letters, 118 selfloop transitions, 21 changer transitions 0/258 dead transitions. [2022-09-16 11:51:21,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 258 transitions, 929 flow [2022-09-16 11:51:21,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:51:21,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:51:21,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2618 transitions. [2022-09-16 11:51:21,231 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5936507936507937 [2022-09-16 11:51:21,231 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2618 transitions. [2022-09-16 11:51:21,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2618 transitions. [2022-09-16 11:51:21,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:21,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2618 transitions. [2022-09-16 11:51:21,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 145.44444444444446) internal successors, (2618), 18 states have internal predecessors, (2618), 0 states have call successors, (0), 0 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 11:51:21,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 245.0) internal successors, (4655), 19 states have internal predecessors, (4655), 0 states have call successors, (0), 0 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 11:51:21,245 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 245.0) internal successors, (4655), 19 states have internal predecessors, (4655), 0 states have call successors, (0), 0 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 11:51:21,245 INFO L175 Difference]: Start difference. First operand has 219 places, 202 transitions, 511 flow. Second operand 18 states and 2618 transitions. [2022-09-16 11:51:21,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 258 transitions, 929 flow [2022-09-16 11:51:21,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 258 transitions, 923 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:51:21,251 INFO L231 Difference]: Finished difference. Result has 239 places, 207 transitions, 596 flow [2022-09-16 11:51:21,252 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=596, PETRI_PLACES=239, PETRI_TRANSITIONS=207} [2022-09-16 11:51:21,253 INFO L287 CegarLoopForPetriNet]: 217 programPoint places, 22 predicate places. [2022-09-16 11:51:21,253 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 207 transitions, 596 flow [2022-09-16 11:51:21,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 141.36363636363637) internal successors, (3110), 22 states have internal predecessors, (3110), 0 states have call successors, (0), 0 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 11:51:21,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:21,254 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, 1, 1, 1, 1] [2022-09-16 11:51:21,281 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 11:51:21,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:51:21,480 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2022-09-16 11:51:21,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:21,480 INFO L85 PathProgramCache]: Analyzing trace with hash 452384663, now seen corresponding path program 1 times [2022-09-16 11:51:21,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:21,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146278759] [2022-09-16 11:51:21,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:21,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:21,537 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 11:51:21,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:21,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146278759] [2022-09-16 11:51:21,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146278759] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:21,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:21,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:51:21,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122450266] [2022-09-16 11:51:21,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:21,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:51:21,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:21,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:51:21,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:51:21,540 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 245 [2022-09-16 11:51:21,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 207 transitions, 596 flow. Second operand has 4 states, 4 states have (on average 181.5) internal successors, (726), 4 states have internal predecessors, (726), 0 states have call successors, (0), 0 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 11:51:21,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:21,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 245 [2022-09-16 11:51:21,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:24,201 INFO L130 PetriNetUnfolder]: 11859/16450 cut-off events. [2022-09-16 11:51:24,201 INFO L131 PetriNetUnfolder]: For 4543/4546 co-relation queries the response was YES. [2022-09-16 11:51:24,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36418 conditions, 16450 events. 11859/16450 cut-off events. For 4543/4546 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 92744 event pairs, 9187 based on Foata normal form. 0/7049 useless extension candidates. Maximal degree in co-relation 35561. Up to 16016 conditions per place. [2022-09-16 11:51:24,322 INFO L137 encePairwiseOnDemand]: 240/245 looper letters, 34 selfloop transitions, 3 changer transitions 0/205 dead transitions. [2022-09-16 11:51:24,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 205 transitions, 666 flow [2022-09-16 11:51:24,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:51:24,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:51:24,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 753 transitions. [2022-09-16 11:51:24,324 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7683673469387755 [2022-09-16 11:51:24,324 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 753 transitions. [2022-09-16 11:51:24,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 753 transitions. [2022-09-16 11:51:24,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:24,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 753 transitions. [2022-09-16 11:51:24,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 188.25) internal successors, (753), 4 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:24,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 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 11:51:24,328 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 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 11:51:24,328 INFO L175 Difference]: Start difference. First operand has 239 places, 207 transitions, 596 flow. Second operand 4 states and 753 transitions. [2022-09-16 11:51:24,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 205 transitions, 666 flow [2022-09-16 11:51:24,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 205 transitions, 636 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-09-16 11:51:24,334 INFO L231 Difference]: Finished difference. Result has 230 places, 205 transitions, 568 flow [2022-09-16 11:51:24,334 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=568, PETRI_PLACES=230, PETRI_TRANSITIONS=205} [2022-09-16 11:51:24,335 INFO L287 CegarLoopForPetriNet]: 217 programPoint places, 13 predicate places. [2022-09-16 11:51:24,335 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 205 transitions, 568 flow [2022-09-16 11:51:24,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.5) internal successors, (726), 4 states have internal predecessors, (726), 0 states have call successors, (0), 0 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 11:51:24,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:24,336 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, 1, 1, 1, 1, 1] [2022-09-16 11:51:24,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:51:24,336 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2022-09-16 11:51:24,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:24,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1139023931, now seen corresponding path program 1 times [2022-09-16 11:51:24,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:24,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544363710] [2022-09-16 11:51:24,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:24,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:24,433 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 11:51:24,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:24,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544363710] [2022-09-16 11:51:24,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544363710] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:24,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:24,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-16 11:51:24,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125437667] [2022-09-16 11:51:24,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:24,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-16 11:51:24,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:24,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-16 11:51:24,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:51:24,436 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 245 [2022-09-16 11:51:24,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 205 transitions, 568 flow. Second operand has 9 states, 9 states have (on average 146.66666666666666) internal successors, (1320), 9 states have internal predecessors, (1320), 0 states have call successors, (0), 0 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 11:51:24,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:24,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 245 [2022-09-16 11:51:24,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand