/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:59:07,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:59:07,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:59:07,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:59:07,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:59:07,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:59:07,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:59:07,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:59:07,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:59:07,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:59:07,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:59:07,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:59:07,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:59:07,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:59:07,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:59:07,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:59:07,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:59:07,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:59:07,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:59:07,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:59:07,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:59:07,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:59:07,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:59:07,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:59:07,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:59:07,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:59:07,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:59:07,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:59:07,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:59:07,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:59:07,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:59:07,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:59:07,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:59:07,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:59:07,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:59:07,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:59:07,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:59:07,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:59:07,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:59:07,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:59:07,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:59:07,488 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:59:07,519 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:59:07,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:59:07,520 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:59:07,520 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:59:07,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:59:07,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:59:07,521 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:59:07,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:59:07,522 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:59:07,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:59:07,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:59:07,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:59:07,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:59:07,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:59:07,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:59:07,523 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:59:07,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:59:07,524 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:59:07,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:59:07,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:59:07,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:59:07,524 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:59:07,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:59:07,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:59:07,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:59:07,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:59:07,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:59:07,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:59:07,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:59:07,527 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:59:07,527 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:59:07,527 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:59:07,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:59:07,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:59:07,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:59:07,803 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:59:07,807 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:59:07,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c [2022-09-16 11:59:07,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94883adb6/48f98691de634e61a251ec217b1e0dcf/FLAG9b44cd463 [2022-09-16 11:59:08,285 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:59:08,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c [2022-09-16 11:59:08,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94883adb6/48f98691de634e61a251ec217b1e0dcf/FLAG9b44cd463 [2022-09-16 11:59:08,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94883adb6/48f98691de634e61a251ec217b1e0dcf [2022-09-16 11:59:08,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:59:08,308 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:59:08,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:59:08,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:59:08,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:59:08,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:59:08" (1/1) ... [2022-09-16 11:59:08,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a9539fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:08, skipping insertion in model container [2022-09-16 11:59:08,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:59:08" (1/1) ... [2022-09-16 11:59:08,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:59:08,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:59:08,528 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2022-09-16 11:59:08,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:59:08,539 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:59:08,569 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2022-09-16 11:59:08,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:59:08,586 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:59:08,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:08 WrapperNode [2022-09-16 11:59:08,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:59:08,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:59:08,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:59:08,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:59:08,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:08" (1/1) ... [2022-09-16 11:59:08,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:08" (1/1) ... [2022-09-16 11:59:08,638 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 277 [2022-09-16 11:59:08,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:59:08,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:59:08,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:59:08,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:59:08,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:08" (1/1) ... [2022-09-16 11:59:08,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:08" (1/1) ... [2022-09-16 11:59:08,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:08" (1/1) ... [2022-09-16 11:59:08,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:08" (1/1) ... [2022-09-16 11:59:08,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:08" (1/1) ... [2022-09-16 11:59:08,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:08" (1/1) ... [2022-09-16 11:59:08,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:08" (1/1) ... [2022-09-16 11:59:08,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:59:08,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:59:08,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:59:08,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:59:08,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:08" (1/1) ... [2022-09-16 11:59:08,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:59:08,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:08,707 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 11:59:08,712 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 11:59:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:59:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:59:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:59:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:59:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:59:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:59:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:59:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:59:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:59:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:59:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:59:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:59:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:59:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:59:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:59:08,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:59:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:59:08,742 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 11:59:08,827 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:59:08,829 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:59:09,269 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:59:09,455 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:59:09,455 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-09-16 11:59:09,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:59:09 BoogieIcfgContainer [2022-09-16 11:59:09,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:59:09,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:59:09,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:59:09,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:59:09,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:59:08" (1/3) ... [2022-09-16 11:59:09,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1997639b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:59:09, skipping insertion in model container [2022-09-16 11:59:09,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:08" (2/3) ... [2022-09-16 11:59:09,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1997639b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:59:09, skipping insertion in model container [2022-09-16 11:59:09,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:59:09" (3/3) ... [2022-09-16 11:59:09,468 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2022-09-16 11:59:09,487 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:59:09,487 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-09-16 11:59:09,487 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:59:09,577 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:59:09,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 252 transitions, 528 flow [2022-09-16 11:59:09,735 INFO L130 PetriNetUnfolder]: 18/249 cut-off events. [2022-09-16 11:59:09,736 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:59:09,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 249 events. 18/249 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 236 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 204. Up to 3 conditions per place. [2022-09-16 11:59:09,741 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 252 transitions, 528 flow [2022-09-16 11:59:09,755 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 228 transitions, 471 flow [2022-09-16 11:59:09,770 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:59:09,776 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;@43fe3942, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:59:09,777 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-09-16 11:59:09,807 INFO L130 PetriNetUnfolder]: 3/85 cut-off events. [2022-09-16 11:59:09,807 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:59:09,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:09,809 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] [2022-09-16 11:59:09,809 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:59:09,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:09,814 INFO L85 PathProgramCache]: Analyzing trace with hash -688142939, now seen corresponding path program 1 times [2022-09-16 11:59:09,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:09,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422203271] [2022-09-16 11:59:09,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:09,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:10,117 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 11:59:10,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:10,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422203271] [2022-09-16 11:59:10,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422203271] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:10,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:10,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:59:10,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415317712] [2022-09-16 11:59:10,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:10,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:59:10,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:10,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:59:10,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:59:10,158 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 252 [2022-09-16 11:59:10,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 228 transitions, 471 flow. Second operand has 4 states, 4 states have (on average 194.5) internal successors, (778), 4 states have internal predecessors, (778), 0 states have call successors, (0), 0 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 11:59:10,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:10,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 252 [2022-09-16 11:59:10,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:10,760 INFO L130 PetriNetUnfolder]: 585/1775 cut-off events. [2022-09-16 11:59:10,760 INFO L131 PetriNetUnfolder]: For 170/170 co-relation queries the response was YES. [2022-09-16 11:59:10,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2803 conditions, 1775 events. 585/1775 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 11859 event pairs, 328 based on Foata normal form. 212/1329 useless extension candidates. Maximal degree in co-relation 1220. Up to 437 conditions per place. [2022-09-16 11:59:10,787 INFO L137 encePairwiseOnDemand]: 222/252 looper letters, 62 selfloop transitions, 9 changer transitions 5/243 dead transitions. [2022-09-16 11:59:10,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 243 transitions, 658 flow [2022-09-16 11:59:10,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:59:10,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:59:10,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1070 transitions. [2022-09-16 11:59:10,808 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8492063492063492 [2022-09-16 11:59:10,809 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1070 transitions. [2022-09-16 11:59:10,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1070 transitions. [2022-09-16 11:59:10,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:10,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1070 transitions. [2022-09-16 11:59:10,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 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 11:59:10,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 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 11:59:10,833 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 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 11:59:10,835 INFO L175 Difference]: Start difference. First operand has 221 places, 228 transitions, 471 flow. Second operand 5 states and 1070 transitions. [2022-09-16 11:59:10,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 243 transitions, 658 flow [2022-09-16 11:59:10,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 243 transitions, 640 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:59:10,849 INFO L231 Difference]: Finished difference. Result has 218 places, 213 transitions, 485 flow [2022-09-16 11:59:10,851 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=485, PETRI_PLACES=218, PETRI_TRANSITIONS=213} [2022-09-16 11:59:10,857 INFO L287 CegarLoopForPetriNet]: 221 programPoint places, -3 predicate places. [2022-09-16 11:59:10,858 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 213 transitions, 485 flow [2022-09-16 11:59:10,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.5) internal successors, (778), 4 states have internal predecessors, (778), 0 states have call successors, (0), 0 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 11:59:10,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:10,860 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] [2022-09-16 11:59:10,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:59:10,860 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:59:10,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:10,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1157477657, now seen corresponding path program 1 times [2022-09-16 11:59:10,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:10,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998994194] [2022-09-16 11:59:10,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:10,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:10,967 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 11:59:10,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:10,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998994194] [2022-09-16 11:59:10,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998994194] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:10,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104980778] [2022-09-16 11:59:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:10,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:10,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:10,975 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 11:59:10,983 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 11:59:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:11,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:11,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:11,201 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 11:59:11,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:11,253 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 11:59:11,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104980778] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:11,253 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:11,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:59:11,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425008864] [2022-09-16 11:59:11,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:11,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:59:11,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:11,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:59:11,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:59:11,259 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 252 [2022-09-16 11:59:11,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 213 transitions, 485 flow. Second operand has 12 states, 12 states have (on average 195.66666666666666) internal successors, (2348), 12 states have internal predecessors, (2348), 0 states have call successors, (0), 0 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 11:59:11,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:11,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 252 [2022-09-16 11:59:11,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:12,304 INFO L130 PetriNetUnfolder]: 1461/4290 cut-off events. [2022-09-16 11:59:12,304 INFO L131 PetriNetUnfolder]: For 117/117 co-relation queries the response was YES. [2022-09-16 11:59:12,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6779 conditions, 4290 events. 1461/4290 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 33536 event pairs, 820 based on Foata normal form. 6/2676 useless extension candidates. Maximal degree in co-relation 5204. Up to 430 conditions per place. [2022-09-16 11:59:12,352 INFO L137 encePairwiseOnDemand]: 237/252 looper letters, 131 selfloop transitions, 40 changer transitions 0/338 dead transitions. [2022-09-16 11:59:12,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 338 transitions, 1151 flow [2022-09-16 11:59:12,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:59:12,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:59:12,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3651 transitions. [2022-09-16 11:59:12,361 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8048941798941799 [2022-09-16 11:59:12,361 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3651 transitions. [2022-09-16 11:59:12,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3651 transitions. [2022-09-16 11:59:12,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:12,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3651 transitions. [2022-09-16 11:59:12,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 202.83333333333334) internal successors, (3651), 18 states have internal predecessors, (3651), 0 states have call successors, (0), 0 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 11:59:12,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 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 11:59:12,384 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 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 11:59:12,384 INFO L175 Difference]: Start difference. First operand has 218 places, 213 transitions, 485 flow. Second operand 18 states and 3651 transitions. [2022-09-16 11:59:12,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 338 transitions, 1151 flow [2022-09-16 11:59:12,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 338 transitions, 1146 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:59:12,395 INFO L231 Difference]: Finished difference. Result has 233 places, 240 transitions, 718 flow [2022-09-16 11:59:12,396 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=718, PETRI_PLACES=233, PETRI_TRANSITIONS=240} [2022-09-16 11:59:12,397 INFO L287 CegarLoopForPetriNet]: 221 programPoint places, 12 predicate places. [2022-09-16 11:59:12,397 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 240 transitions, 718 flow [2022-09-16 11:59:12,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 195.66666666666666) internal successors, (2348), 12 states have internal predecessors, (2348), 0 states have call successors, (0), 0 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 11:59:12,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:12,400 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] [2022-09-16 11:59:12,428 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 11:59:12,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:12,625 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:59:12,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:12,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1522069764, now seen corresponding path program 1 times [2022-09-16 11:59:12,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:12,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445140215] [2022-09-16 11:59:12,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:12,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:12,763 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 11:59:12,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:12,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445140215] [2022-09-16 11:59:12,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445140215] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:12,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886202008] [2022-09-16 11:59:12,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:12,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:12,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:12,766 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 11:59:12,784 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 11:59:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:12,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:12,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:12,941 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 11:59:12,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:12,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886202008] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:12,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:12,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:59:12,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361157142] [2022-09-16 11:59:12,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:12,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:12,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:12,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:12,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:59:12,950 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 252 [2022-09-16 11:59:12,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 240 transitions, 718 flow. Second operand has 6 states, 6 states have (on average 195.33333333333334) internal successors, (1172), 6 states have internal predecessors, (1172), 0 states have call successors, (0), 0 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 11:59:12,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:12,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 252 [2022-09-16 11:59:12,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:13,729 INFO L130 PetriNetUnfolder]: 1461/4282 cut-off events. [2022-09-16 11:59:13,729 INFO L131 PetriNetUnfolder]: For 211/211 co-relation queries the response was YES. [2022-09-16 11:59:13,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6816 conditions, 4282 events. 1461/4282 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 33507 event pairs, 820 based on Foata normal form. 8/2670 useless extension candidates. Maximal degree in co-relation 5426. Up to 1676 conditions per place. [2022-09-16 11:59:13,778 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 63 selfloop transitions, 27 changer transitions 0/257 dead transitions. [2022-09-16 11:59:13,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 257 transitions, 904 flow [2022-09-16 11:59:13,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:59:13,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:59:13,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1422 transitions. [2022-09-16 11:59:13,782 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8061224489795918 [2022-09-16 11:59:13,782 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1422 transitions. [2022-09-16 11:59:13,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1422 transitions. [2022-09-16 11:59:13,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:13,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1422 transitions. [2022-09-16 11:59:13,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 203.14285714285714) internal successors, (1422), 7 states have internal predecessors, (1422), 0 states have call successors, (0), 0 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 11:59:13,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 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 11:59:13,791 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 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 11:59:13,791 INFO L175 Difference]: Start difference. First operand has 233 places, 240 transitions, 718 flow. Second operand 7 states and 1422 transitions. [2022-09-16 11:59:13,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 257 transitions, 904 flow [2022-09-16 11:59:13,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 257 transitions, 830 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-09-16 11:59:13,799 INFO L231 Difference]: Finished difference. Result has 228 places, 232 transitions, 644 flow [2022-09-16 11:59:13,800 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=644, PETRI_PLACES=228, PETRI_TRANSITIONS=232} [2022-09-16 11:59:13,801 INFO L287 CegarLoopForPetriNet]: 221 programPoint places, 7 predicate places. [2022-09-16 11:59:13,801 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 232 transitions, 644 flow [2022-09-16 11:59:13,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 195.33333333333334) internal successors, (1172), 6 states have internal predecessors, (1172), 0 states have call successors, (0), 0 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 11:59:13,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:13,802 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:13,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:14,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 11:59:14,028 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:59:14,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:14,028 INFO L85 PathProgramCache]: Analyzing trace with hash -97490267, now seen corresponding path program 2 times [2022-09-16 11:59:14,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:14,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589415391] [2022-09-16 11:59:14,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:14,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:14,187 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:14,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:14,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589415391] [2022-09-16 11:59:14,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589415391] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:14,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316099029] [2022-09-16 11:59:14,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:59:14,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:14,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:14,190 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 11:59:14,192 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 11:59:14,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:59:14,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:59:14,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:59:14,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:59:14,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:14,564 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:59:14,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316099029] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:14,565 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:14,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:59:14,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704218429] [2022-09-16 11:59:14,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:14,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:59:14,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:14,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:59:14,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:59:14,571 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 252 [2022-09-16 11:59:14,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 232 transitions, 644 flow. Second operand has 18 states, 18 states have (on average 181.61111111111111) internal successors, (3269), 18 states have internal predecessors, (3269), 0 states have call successors, (0), 0 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 11:59:14,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:14,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 252 [2022-09-16 11:59:14,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:16,110 INFO L130 PetriNetUnfolder]: 897/3698 cut-off events. [2022-09-16 11:59:16,111 INFO L131 PetriNetUnfolder]: For 245/245 co-relation queries the response was YES. [2022-09-16 11:59:16,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5484 conditions, 3698 events. 897/3698 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 29144 event pairs, 546 based on Foata normal form. 4/2771 useless extension candidates. Maximal degree in co-relation 4386. Up to 231 conditions per place. [2022-09-16 11:59:16,144 INFO L137 encePairwiseOnDemand]: 229/252 looper letters, 156 selfloop transitions, 65 changer transitions 0/373 dead transitions. [2022-09-16 11:59:16,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 373 transitions, 1463 flow [2022-09-16 11:59:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-09-16 11:59:16,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-09-16 11:59:16,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 8968 transitions. [2022-09-16 11:59:16,163 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7262714609653386 [2022-09-16 11:59:16,164 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 8968 transitions. [2022-09-16 11:59:16,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 8968 transitions. [2022-09-16 11:59:16,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:16,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 8968 transitions. [2022-09-16 11:59:16,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 183.0204081632653) internal successors, (8968), 49 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 11:59:16,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 252.0) internal successors, (12600), 50 states have internal predecessors, (12600), 0 states have call successors, (0), 0 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 11:59:16,220 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 252.0) internal successors, (12600), 50 states have internal predecessors, (12600), 0 states have call successors, (0), 0 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 11:59:16,221 INFO L175 Difference]: Start difference. First operand has 228 places, 232 transitions, 644 flow. Second operand 49 states and 8968 transitions. [2022-09-16 11:59:16,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 373 transitions, 1463 flow [2022-09-16 11:59:16,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 373 transitions, 1420 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:59:16,229 INFO L231 Difference]: Finished difference. Result has 271 places, 254 transitions, 853 flow [2022-09-16 11:59:16,229 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=853, PETRI_PLACES=271, PETRI_TRANSITIONS=254} [2022-09-16 11:59:16,230 INFO L287 CegarLoopForPetriNet]: 221 programPoint places, 50 predicate places. [2022-09-16 11:59:16,230 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 254 transitions, 853 flow [2022-09-16 11:59:16,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 181.61111111111111) internal successors, (3269), 18 states have internal predecessors, (3269), 0 states have call successors, (0), 0 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 11:59:16,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:16,232 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, 1, 1, 1, 1, 1] [2022-09-16 11:59:16,261 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 11:59:16,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:16,448 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:59:16,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:16,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1256211469, now seen corresponding path program 1 times [2022-09-16 11:59:16,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:16,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724015889] [2022-09-16 11:59:16,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:16,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:16,529 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 11:59:16,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:16,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724015889] [2022-09-16 11:59:16,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724015889] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:16,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:16,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:59:16,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318014400] [2022-09-16 11:59:16,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:16,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:59:16,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:16,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:59:16,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:59:16,532 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 252 [2022-09-16 11:59:16,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 254 transitions, 853 flow. Second operand has 4 states, 4 states have (on average 208.5) internal successors, (834), 4 states have internal predecessors, (834), 0 states have call successors, (0), 0 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 11:59:16,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:16,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 252 [2022-09-16 11:59:16,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:18,187 INFO L130 PetriNetUnfolder]: 4530/10397 cut-off events. [2022-09-16 11:59:18,187 INFO L131 PetriNetUnfolder]: For 362/362 co-relation queries the response was YES. [2022-09-16 11:59:18,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19134 conditions, 10397 events. 4530/10397 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 90605 event pairs, 2121 based on Foata normal form. 0/7807 useless extension candidates. Maximal degree in co-relation 18845. Up to 4124 conditions per place. [2022-09-16 11:59:18,278 INFO L137 encePairwiseOnDemand]: 246/252 looper letters, 50 selfloop transitions, 4 changer transitions 0/286 dead transitions. [2022-09-16 11:59:18,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 286 transitions, 1036 flow [2022-09-16 11:59:18,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:59:18,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:59:18,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1091 transitions. [2022-09-16 11:59:18,281 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8658730158730159 [2022-09-16 11:59:18,281 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1091 transitions. [2022-09-16 11:59:18,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1091 transitions. [2022-09-16 11:59:18,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:18,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1091 transitions. [2022-09-16 11:59:18,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 218.2) internal successors, (1091), 5 states have internal predecessors, (1091), 0 states have call successors, (0), 0 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 11:59:18,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 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 11:59:18,286 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 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 11:59:18,286 INFO L175 Difference]: Start difference. First operand has 271 places, 254 transitions, 853 flow. Second operand 5 states and 1091 transitions. [2022-09-16 11:59:18,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 286 transitions, 1036 flow [2022-09-16 11:59:18,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 286 transitions, 953 flow, removed 9 selfloop flow, removed 15 redundant places. [2022-09-16 11:59:18,293 INFO L231 Difference]: Finished difference. Result has 263 places, 257 transitions, 800 flow [2022-09-16 11:59:18,294 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=800, PETRI_PLACES=263, PETRI_TRANSITIONS=257} [2022-09-16 11:59:18,295 INFO L287 CegarLoopForPetriNet]: 221 programPoint places, 42 predicate places. [2022-09-16 11:59:18,295 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 257 transitions, 800 flow [2022-09-16 11:59:18,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 208.5) internal successors, (834), 4 states have internal predecessors, (834), 0 states have call successors, (0), 0 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 11:59:18,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:18,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:18,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:59:18,296 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:59:18,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:18,296 INFO L85 PathProgramCache]: Analyzing trace with hash -710039529, now seen corresponding path program 1 times [2022-09-16 11:59:18,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:18,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440420087] [2022-09-16 11:59:18,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:18,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:18,355 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 11:59:18,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:18,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440420087] [2022-09-16 11:59:18,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440420087] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:18,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:18,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:59:18,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628474586] [2022-09-16 11:59:18,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:18,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:18,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:18,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:18,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:59:18,358 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 252 [2022-09-16 11:59:18,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 257 transitions, 800 flow. Second operand has 6 states, 6 states have (on average 194.66666666666666) internal successors, (1168), 6 states have internal predecessors, (1168), 0 states have call successors, (0), 0 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 11:59:18,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:18,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 252 [2022-09-16 11:59:18,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:19,195 INFO L130 PetriNetUnfolder]: 1115/5106 cut-off events. [2022-09-16 11:59:19,196 INFO L131 PetriNetUnfolder]: For 447/447 co-relation queries the response was YES. [2022-09-16 11:59:19,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7878 conditions, 5106 events. 1115/5106 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 47228 event pairs, 905 based on Foata normal form. 24/4054 useless extension candidates. Maximal degree in co-relation 7558. Up to 1757 conditions per place. [2022-09-16 11:59:19,330 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 73 selfloop transitions, 13 changer transitions 2/266 dead transitions. [2022-09-16 11:59:19,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 266 transitions, 999 flow [2022-09-16 11:59:19,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:59:19,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:59:19,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1391 transitions. [2022-09-16 11:59:19,336 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7885487528344671 [2022-09-16 11:59:19,337 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1391 transitions. [2022-09-16 11:59:19,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1391 transitions. [2022-09-16 11:59:19,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:19,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1391 transitions. [2022-09-16 11:59:19,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 198.71428571428572) internal successors, (1391), 7 states have internal predecessors, (1391), 0 states have call successors, (0), 0 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 11:59:19,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 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 11:59:19,343 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 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 11:59:19,343 INFO L175 Difference]: Start difference. First operand has 263 places, 257 transitions, 800 flow. Second operand 7 states and 1391 transitions. [2022-09-16 11:59:19,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 266 transitions, 999 flow [2022-09-16 11:59:19,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 266 transitions, 997 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:59:19,351 INFO L231 Difference]: Finished difference. Result has 269 places, 257 transitions, 833 flow [2022-09-16 11:59:19,352 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=833, PETRI_PLACES=269, PETRI_TRANSITIONS=257} [2022-09-16 11:59:19,355 INFO L287 CegarLoopForPetriNet]: 221 programPoint places, 48 predicate places. [2022-09-16 11:59:19,355 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 257 transitions, 833 flow [2022-09-16 11:59:19,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 194.66666666666666) internal successors, (1168), 6 states have internal predecessors, (1168), 0 states have call successors, (0), 0 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 11:59:19,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:19,356 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:19,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:59:19,356 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:59:19,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:19,357 INFO L85 PathProgramCache]: Analyzing trace with hash -284393048, now seen corresponding path program 1 times [2022-09-16 11:59:19,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:19,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966360943] [2022-09-16 11:59:19,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:19,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:19,497 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:19,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:19,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966360943] [2022-09-16 11:59:19,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966360943] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:19,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324800806] [2022-09-16 11:59:19,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:19,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:19,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:19,500 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:19,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:59:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:19,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:19,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 11:59:19,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:19,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324800806] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:19,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:19,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2022-09-16 11:59:19,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809082642] [2022-09-16 11:59:19,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:19,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:19,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:19,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:19,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:59:19,717 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 252 [2022-09-16 11:59:19,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 257 transitions, 833 flow. Second operand has 6 states, 6 states have (on average 194.5) internal successors, (1167), 6 states have internal predecessors, (1167), 0 states have call successors, (0), 0 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 11:59:19,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:19,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 252 [2022-09-16 11:59:19,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:20,413 INFO L130 PetriNetUnfolder]: 1121/5538 cut-off events. [2022-09-16 11:59:20,413 INFO L131 PetriNetUnfolder]: For 659/659 co-relation queries the response was YES. [2022-09-16 11:59:20,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9148 conditions, 5538 events. 1121/5538 cut-off events. For 659/659 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 51515 event pairs, 905 based on Foata normal form. 92/4523 useless extension candidates. Maximal degree in co-relation 8211. Up to 1822 conditions per place. [2022-09-16 11:59:20,520 INFO L137 encePairwiseOnDemand]: 240/252 looper letters, 93 selfloop transitions, 21 changer transitions 1/293 dead transitions. [2022-09-16 11:59:20,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 293 transitions, 1224 flow [2022-09-16 11:59:20,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:59:20,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:59:20,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1782 transitions. [2022-09-16 11:59:20,526 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2022-09-16 11:59:20,526 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1782 transitions. [2022-09-16 11:59:20,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1782 transitions. [2022-09-16 11:59:20,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:20,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1782 transitions. [2022-09-16 11:59:20,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 198.0) internal successors, (1782), 9 states have internal predecessors, (1782), 0 states have call successors, (0), 0 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 11:59:20,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 252.0) internal successors, (2520), 10 states have internal predecessors, (2520), 0 states have call successors, (0), 0 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 11:59:20,535 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 252.0) internal successors, (2520), 10 states have internal predecessors, (2520), 0 states have call successors, (0), 0 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 11:59:20,535 INFO L175 Difference]: Start difference. First operand has 269 places, 257 transitions, 833 flow. Second operand 9 states and 1782 transitions. [2022-09-16 11:59:20,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 293 transitions, 1224 flow [2022-09-16 11:59:20,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 293 transitions, 1192 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:59:20,545 INFO L231 Difference]: Finished difference. Result has 274 places, 258 transitions, 866 flow [2022-09-16 11:59:20,546 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=866, PETRI_PLACES=274, PETRI_TRANSITIONS=258} [2022-09-16 11:59:20,546 INFO L287 CegarLoopForPetriNet]: 221 programPoint places, 53 predicate places. [2022-09-16 11:59:20,546 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 258 transitions, 866 flow [2022-09-16 11:59:20,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 194.5) internal successors, (1167), 6 states have internal predecessors, (1167), 0 states have call successors, (0), 0 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 11:59:20,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:20,547 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:20,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:20,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:20,772 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:59:20,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:20,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1504716212, now seen corresponding path program 1 times [2022-09-16 11:59:20,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:20,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183783243] [2022-09-16 11:59:20,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:20,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:20,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:59:20,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:20,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183783243] [2022-09-16 11:59:20,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183783243] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:20,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776328031] [2022-09-16 11:59:20,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:20,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:20,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:20,844 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:20,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:59:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:20,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 9 conjunts are in the unsatisfiable core [2022-09-16 11:59:20,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:21,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:21,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:21,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:21,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776328031] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:21,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:21,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-09-16 11:59:21,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661750682] [2022-09-16 11:59:21,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:21,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 11:59:21,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:21,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 11:59:21,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2022-09-16 11:59:21,408 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 252 [2022-09-16 11:59:21,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 258 transitions, 866 flow. Second operand has 19 states, 19 states have (on average 174.21052631578948) internal successors, (3310), 19 states have internal predecessors, (3310), 0 states have call successors, (0), 0 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 11:59:21,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:21,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 252 [2022-09-16 11:59:21,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:25,179 INFO L130 PetriNetUnfolder]: 8175/20680 cut-off events. [2022-09-16 11:59:25,179 INFO L131 PetriNetUnfolder]: For 6201/6559 co-relation queries the response was YES. [2022-09-16 11:59:25,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47170 conditions, 20680 events. 8175/20680 cut-off events. For 6201/6559 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 211090 event pairs, 1915 based on Foata normal form. 469/16563 useless extension candidates. Maximal degree in co-relation 39580. Up to 4657 conditions per place. [2022-09-16 11:59:25,342 INFO L137 encePairwiseOnDemand]: 229/252 looper letters, 279 selfloop transitions, 57 changer transitions 2/481 dead transitions. [2022-09-16 11:59:25,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 481 transitions, 2466 flow [2022-09-16 11:59:25,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-16 11:59:25,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-09-16 11:59:25,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5318 transitions. [2022-09-16 11:59:25,351 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7034391534391534 [2022-09-16 11:59:25,352 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5318 transitions. [2022-09-16 11:59:25,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5318 transitions. [2022-09-16 11:59:25,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:25,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5318 transitions. [2022-09-16 11:59:25,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 177.26666666666668) internal successors, (5318), 30 states have internal predecessors, (5318), 0 states have call successors, (0), 0 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 11:59:25,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 252.0) internal successors, (7812), 31 states have internal predecessors, (7812), 0 states have call successors, (0), 0 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 11:59:25,374 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 252.0) internal successors, (7812), 31 states have internal predecessors, (7812), 0 states have call successors, (0), 0 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 11:59:25,375 INFO L175 Difference]: Start difference. First operand has 274 places, 258 transitions, 866 flow. Second operand 30 states and 5318 transitions. [2022-09-16 11:59:25,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 481 transitions, 2466 flow [2022-09-16 11:59:25,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 481 transitions, 2438 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:59:25,416 INFO L231 Difference]: Finished difference. Result has 309 places, 282 transitions, 1173 flow [2022-09-16 11:59:25,417 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1173, PETRI_PLACES=309, PETRI_TRANSITIONS=282} [2022-09-16 11:59:25,417 INFO L287 CegarLoopForPetriNet]: 221 programPoint places, 88 predicate places. [2022-09-16 11:59:25,418 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 282 transitions, 1173 flow [2022-09-16 11:59:25,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 174.21052631578948) internal successors, (3310), 19 states have internal predecessors, (3310), 0 states have call successors, (0), 0 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 11:59:25,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:25,419 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, 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 11:59:25,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:25,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:25,635 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:59:25,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:25,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1188161977, now seen corresponding path program 1 times [2022-09-16 11:59:25,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:25,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548674450] [2022-09-16 11:59:25,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:25,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:59:25,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:25,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548674450] [2022-09-16 11:59:25,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548674450] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:25,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:25,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:59:25,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109329197] [2022-09-16 11:59:25,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:25,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:59:25,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:25,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:59:25,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:59:25,747 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 252 [2022-09-16 11:59:25,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 282 transitions, 1173 flow. Second operand has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 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 11:59:25,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:25,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 252 [2022-09-16 11:59:25,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:27,711 INFO L130 PetriNetUnfolder]: 2698/11071 cut-off events. [2022-09-16 11:59:27,711 INFO L131 PetriNetUnfolder]: For 11786/12338 co-relation queries the response was YES. [2022-09-16 11:59:27,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24778 conditions, 11071 events. 2698/11071 cut-off events. For 11786/12338 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 116057 event pairs, 871 based on Foata normal form. 401/8658 useless extension candidates. Maximal degree in co-relation 20810. Up to 3262 conditions per place. [2022-09-16 11:59:27,787 INFO L137 encePairwiseOnDemand]: 248/252 looper letters, 25 selfloop transitions, 2 changer transitions 1/289 dead transitions. [2022-09-16 11:59:27,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 289 transitions, 1270 flow [2022-09-16 11:59:27,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:59:27,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:59:27,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 664 transitions. [2022-09-16 11:59:27,788 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8783068783068783 [2022-09-16 11:59:27,789 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 664 transitions. [2022-09-16 11:59:27,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 664 transitions. [2022-09-16 11:59:27,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:27,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 664 transitions. [2022-09-16 11:59:27,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 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 11:59:27,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 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 11:59:27,792 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 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 11:59:27,792 INFO L175 Difference]: Start difference. First operand has 309 places, 282 transitions, 1173 flow. Second operand 3 states and 664 transitions. [2022-09-16 11:59:27,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 289 transitions, 1270 flow [2022-09-16 11:59:27,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 289 transitions, 1203 flow, removed 8 selfloop flow, removed 13 redundant places. [2022-09-16 11:59:27,812 INFO L231 Difference]: Finished difference. Result has 299 places, 282 transitions, 1117 flow [2022-09-16 11:59:27,813 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1117, PETRI_PLACES=299, PETRI_TRANSITIONS=282} [2022-09-16 11:59:27,814 INFO L287 CegarLoopForPetriNet]: 221 programPoint places, 78 predicate places. [2022-09-16 11:59:27,814 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 282 transitions, 1117 flow [2022-09-16 11:59:27,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 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 11:59:27,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:27,814 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, 1, 1, 1, 1, 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 11:59:27,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:59:27,815 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:59:27,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:27,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1920625647, now seen corresponding path program 1 times [2022-09-16 11:59:27,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:27,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014663761] [2022-09-16 11:59:27,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:27,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:59:27,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:27,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014663761] [2022-09-16 11:59:27,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014663761] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:27,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747788021] [2022-09-16 11:59:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:27,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:27,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:27,889 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:27,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:59:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:27,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:27,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:28,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:59:28,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:28,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747788021] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:28,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:28,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-09-16 11:59:28,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652650937] [2022-09-16 11:59:28,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:28,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:59:28,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:28,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:59:28,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:59:28,126 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 252 [2022-09-16 11:59:28,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 282 transitions, 1117 flow. Second operand has 4 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 0 states have call successors, (0), 0 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 11:59:28,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:28,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 252 [2022-09-16 11:59:28,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:29,454 INFO L130 PetriNetUnfolder]: 1366/9022 cut-off events. [2022-09-16 11:59:29,454 INFO L131 PetriNetUnfolder]: For 8319/8409 co-relation queries the response was YES. [2022-09-16 11:59:29,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18323 conditions, 9022 events. 1366/9022 cut-off events. For 8319/8409 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 97179 event pairs, 859 based on Foata normal form. 492/8036 useless extension candidates. Maximal degree in co-relation 18050. Up to 2300 conditions per place. [2022-09-16 11:59:29,517 INFO L137 encePairwiseOnDemand]: 247/252 looper letters, 24 selfloop transitions, 3 changer transitions 0/280 dead transitions. [2022-09-16 11:59:29,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 280 transitions, 1161 flow [2022-09-16 11:59:29,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:59:29,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:59:29,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 862 transitions. [2022-09-16 11:59:29,519 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8551587301587301 [2022-09-16 11:59:29,519 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 862 transitions. [2022-09-16 11:59:29,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 862 transitions. [2022-09-16 11:59:29,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:29,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 862 transitions. [2022-09-16 11:59:29,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 215.5) internal successors, (862), 4 states have internal predecessors, (862), 0 states have call successors, (0), 0 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 11:59:29,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 11:59:29,523 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 11:59:29,523 INFO L175 Difference]: Start difference. First operand has 299 places, 282 transitions, 1117 flow. Second operand 4 states and 862 transitions. [2022-09-16 11:59:29,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 280 transitions, 1161 flow [2022-09-16 11:59:29,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 280 transitions, 1152 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-09-16 11:59:29,546 INFO L231 Difference]: Finished difference. Result has 297 places, 280 transitions, 1104 flow [2022-09-16 11:59:29,546 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1104, PETRI_PLACES=297, PETRI_TRANSITIONS=280} [2022-09-16 11:59:29,547 INFO L287 CegarLoopForPetriNet]: 221 programPoint places, 76 predicate places. [2022-09-16 11:59:29,547 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 280 transitions, 1104 flow [2022-09-16 11:59:29,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 0 states have call successors, (0), 0 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 11:59:29,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:29,548 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, 1, 1, 1, 1, 1, 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 11:59:29,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:29,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:29,776 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:59:29,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:29,776 INFO L85 PathProgramCache]: Analyzing trace with hash -590146177, now seen corresponding path program 1 times [2022-09-16 11:59:29,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:29,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064674333] [2022-09-16 11:59:29,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:29,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:29,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:59:29,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:29,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064674333] [2022-09-16 11:59:29,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064674333] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:29,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:29,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:59:29,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374664392] [2022-09-16 11:59:29,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:29,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:59:29,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:29,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:59:29,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:59:29,889 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 252 [2022-09-16 11:59:29,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 280 transitions, 1104 flow. Second operand has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 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 11:59:29,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:29,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 252 [2022-09-16 11:59:29,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:30,970 INFO L130 PetriNetUnfolder]: 1073/7283 cut-off events. [2022-09-16 11:59:30,970 INFO L131 PetriNetUnfolder]: For 5954/6364 co-relation queries the response was YES. [2022-09-16 11:59:31,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14002 conditions, 7283 events. 1073/7283 cut-off events. For 5954/6364 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 74507 event pairs, 420 based on Foata normal form. 132/6246 useless extension candidates. Maximal degree in co-relation 13920. Up to 1816 conditions per place. [2022-09-16 11:59:31,021 INFO L137 encePairwiseOnDemand]: 248/252 looper letters, 16 selfloop transitions, 5 changer transitions 0/281 dead transitions. [2022-09-16 11:59:31,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 281 transitions, 1156 flow [2022-09-16 11:59:31,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:59:31,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:59:31,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2022-09-16 11:59:31,023 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8703703703703703 [2022-09-16 11:59:31,023 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2022-09-16 11:59:31,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2022-09-16 11:59:31,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:31,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2022-09-16 11:59:31,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 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 11:59:31,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 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 11:59:31,026 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 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 11:59:31,026 INFO L175 Difference]: Start difference. First operand has 297 places, 280 transitions, 1104 flow. Second operand 3 states and 658 transitions. [2022-09-16 11:59:31,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 281 transitions, 1156 flow [2022-09-16 11:59:31,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 281 transitions, 1139 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-09-16 11:59:31,043 INFO L231 Difference]: Finished difference. Result has 295 places, 279 transitions, 1111 flow [2022-09-16 11:59:31,043 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1111, PETRI_PLACES=295, PETRI_TRANSITIONS=279} [2022-09-16 11:59:31,044 INFO L287 CegarLoopForPetriNet]: 221 programPoint places, 74 predicate places. [2022-09-16 11:59:31,044 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 279 transitions, 1111 flow [2022-09-16 11:59:31,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 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 11:59:31,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:31,045 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:59:31,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:59:31,045 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:59:31,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:31,045 INFO L85 PathProgramCache]: Analyzing trace with hash 343120182, now seen corresponding path program 1 times [2022-09-16 11:59:31,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:31,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191719262] [2022-09-16 11:59:31,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:31,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:59:31,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:31,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191719262] [2022-09-16 11:59:31,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191719262] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:31,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954875717] [2022-09-16 11:59:31,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:31,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:31,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:31,104 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:31,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 11:59:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:31,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:31,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:59:31,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:31,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954875717] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:31,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:31,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:59:31,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356740142] [2022-09-16 11:59:31,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:31,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:31,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:31,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:31,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:59:31,254 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 252 [2022-09-16 11:59:31,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 279 transitions, 1111 flow. Second operand has 6 states, 6 states have (on average 209.33333333333334) internal successors, (1256), 6 states have internal predecessors, (1256), 0 states have call successors, (0), 0 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 11:59:31,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:31,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 252 [2022-09-16 11:59:31,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:33,004 INFO L130 PetriNetUnfolder]: 4301/10817 cut-off events. [2022-09-16 11:59:33,005 INFO L131 PetriNetUnfolder]: For 17051/17051 co-relation queries the response was YES. [2022-09-16 11:59:33,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31193 conditions, 10817 events. 4301/10817 cut-off events. For 17051/17051 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 99431 event pairs, 110 based on Foata normal form. 142/10016 useless extension candidates. Maximal degree in co-relation 30929. Up to 2787 conditions per place. [2022-09-16 11:59:33,098 INFO L137 encePairwiseOnDemand]: 247/252 looper letters, 54 selfloop transitions, 12 changer transitions 0/309 dead transitions. [2022-09-16 11:59:33,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 309 transitions, 1374 flow [2022-09-16 11:59:33,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:59:33,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:59:33,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1502 transitions. [2022-09-16 11:59:33,100 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8514739229024944 [2022-09-16 11:59:33,100 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1502 transitions. [2022-09-16 11:59:33,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1502 transitions. [2022-09-16 11:59:33,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:33,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1502 transitions. [2022-09-16 11:59:33,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 214.57142857142858) internal successors, (1502), 7 states have internal predecessors, (1502), 0 states have call successors, (0), 0 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 11:59:33,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 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 11:59:33,105 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 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 11:59:33,106 INFO L175 Difference]: Start difference. First operand has 295 places, 279 transitions, 1111 flow. Second operand 7 states and 1502 transitions. [2022-09-16 11:59:33,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 309 transitions, 1374 flow [2022-09-16 11:59:33,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 309 transitions, 1337 flow, removed 15 selfloop flow, removed 2 redundant places. [2022-09-16 11:59:33,150 INFO L231 Difference]: Finished difference. Result has 298 places, 277 transitions, 1100 flow [2022-09-16 11:59:33,150 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1100, PETRI_PLACES=298, PETRI_TRANSITIONS=277} [2022-09-16 11:59:33,151 INFO L287 CegarLoopForPetriNet]: 221 programPoint places, 77 predicate places. [2022-09-16 11:59:33,151 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 277 transitions, 1100 flow [2022-09-16 11:59:33,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 209.33333333333334) internal successors, (1256), 6 states have internal predecessors, (1256), 0 states have call successors, (0), 0 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 11:59:33,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:33,153 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:59:33,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:33,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:33,368 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:59:33,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:33,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1545751041, now seen corresponding path program 1 times [2022-09-16 11:59:33,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:33,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724899381] [2022-09-16 11:59:33,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:33,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:59:34,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:34,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724899381] [2022-09-16 11:59:34,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724899381] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:34,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118212263] [2022-09-16 11:59:34,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:34,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:34,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:34,116 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:34,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-16 11:59:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:34,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 37 conjunts are in the unsatisfiable core [2022-09-16 11:59:34,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:34,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:59:35,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:59:35,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:59:35,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:59:35,368 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:59:35,556 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:59:35,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-09-16 11:59:35,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:59:35,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:36,473 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:59:36,474 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-09-16 11:59:36,486 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:59:36,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 146 [2022-09-16 11:59:36,575 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2022-09-16 11:59:36,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 94 [2022-09-16 11:59:37,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:59:37,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118212263] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:37,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:37,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 55 [2022-09-16 11:59:37,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986845435] [2022-09-16 11:59:37,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:37,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-09-16 11:59:37,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:37,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-09-16 11:59:37,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2831, Unknown=40, NotChecked=0, Total=3080 [2022-09-16 11:59:37,578 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 252 [2022-09-16 11:59:37,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 277 transitions, 1100 flow. Second operand has 56 states, 56 states have (on average 137.82142857142858) internal successors, (7718), 56 states have internal predecessors, (7718), 0 states have call successors, (0), 0 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 11:59:37,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:37,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 252 [2022-09-16 11:59:37,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:44,955 INFO L130 PetriNetUnfolder]: 10666/38187 cut-off events. [2022-09-16 11:59:44,956 INFO L131 PetriNetUnfolder]: For 24029/26557 co-relation queries the response was YES. [2022-09-16 11:59:45,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75726 conditions, 38187 events. 10666/38187 cut-off events. For 24029/26557 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 481564 event pairs, 5483 based on Foata normal form. 728/32162 useless extension candidates. Maximal degree in co-relation 75379. Up to 13684 conditions per place. [2022-09-16 11:59:45,621 INFO L137 encePairwiseOnDemand]: 220/252 looper letters, 161 selfloop transitions, 79 changer transitions 12/374 dead transitions. [2022-09-16 11:59:45,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 374 transitions, 2077 flow [2022-09-16 11:59:45,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-09-16 11:59:45,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-09-16 11:59:45,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 4756 transitions. [2022-09-16 11:59:45,625 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5550887021475257 [2022-09-16 11:59:45,625 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 4756 transitions. [2022-09-16 11:59:45,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 4756 transitions. [2022-09-16 11:59:45,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:45,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 4756 transitions. [2022-09-16 11:59:45,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 139.88235294117646) internal successors, (4756), 34 states have internal predecessors, (4756), 0 states have call successors, (0), 0 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 11:59:45,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 252.0) internal successors, (8820), 35 states have internal predecessors, (8820), 0 states have call successors, (0), 0 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 11:59:45,642 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 252.0) internal successors, (8820), 35 states have internal predecessors, (8820), 0 states have call successors, (0), 0 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 11:59:45,642 INFO L175 Difference]: Start difference. First operand has 298 places, 277 transitions, 1100 flow. Second operand 34 states and 4756 transitions. [2022-09-16 11:59:45,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 374 transitions, 2077 flow [2022-09-16 11:59:46,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 374 transitions, 2051 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-09-16 11:59:46,506 INFO L231 Difference]: Finished difference. Result has 335 places, 341 transitions, 1693 flow [2022-09-16 11:59:46,507 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1693, PETRI_PLACES=335, PETRI_TRANSITIONS=341} [2022-09-16 11:59:46,508 INFO L287 CegarLoopForPetriNet]: 221 programPoint places, 114 predicate places. [2022-09-16 11:59:46,509 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 341 transitions, 1693 flow [2022-09-16 11:59:46,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 137.82142857142858) internal successors, (7718), 56 states have internal predecessors, (7718), 0 states have call successors, (0), 0 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 11:59:46,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:46,515 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:59:46,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:46,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-09-16 11:59:46,716 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:59:46,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:46,717 INFO L85 PathProgramCache]: Analyzing trace with hash -818757729, now seen corresponding path program 1 times [2022-09-16 11:59:46,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:46,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904606850] [2022-09-16 11:59:46,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:46,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:47,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:59:47,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:47,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904606850] [2022-09-16 11:59:47,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904606850] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:47,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376034202] [2022-09-16 11:59:47,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:47,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:47,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:47,604 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:47,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-16 11:59:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:47,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 37 conjunts are in the unsatisfiable core [2022-09-16 11:59:47,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:48,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:59:48,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:59:48,651 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:59:48,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:59:48,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:59:48,905 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:59:48,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-09-16 11:59:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:59:48,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:49,780 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:59:49,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-09-16 11:59:49,789 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:59:49,789 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 76 [2022-09-16 11:59:49,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-09-16 11:59:49,799 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2022-09-16 11:59:50,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:59:50,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376034202] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:50,808 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:50,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20, 20] total 54 [2022-09-16 11:59:50,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257417560] [2022-09-16 11:59:50,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:50,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-09-16 11:59:50,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:50,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-09-16 11:59:50,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=2753, Unknown=36, NotChecked=0, Total=2970 [2022-09-16 11:59:50,814 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 252 [2022-09-16 11:59:50,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 341 transitions, 1693 flow. Second operand has 55 states, 55 states have (on average 131.74545454545455) internal successors, (7246), 55 states have internal predecessors, (7246), 0 states have call successors, (0), 0 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 11:59:50,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:50,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 252 [2022-09-16 11:59:50,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:00:00,542 INFO L130 PetriNetUnfolder]: 10488/34943 cut-off events. [2022-09-16 12:00:00,543 INFO L131 PetriNetUnfolder]: For 38087/44853 co-relation queries the response was YES. [2022-09-16 12:00:00,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78218 conditions, 34943 events. 10488/34943 cut-off events. For 38087/44853 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 425336 event pairs, 5378 based on Foata normal form. 1249/31199 useless extension candidates. Maximal degree in co-relation 77841. Up to 13339 conditions per place. [2022-09-16 12:00:01,006 INFO L137 encePairwiseOnDemand]: 200/252 looper letters, 230 selfloop transitions, 147 changer transitions 14/506 dead transitions. [2022-09-16 12:00:01,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 506 transitions, 3228 flow [2022-09-16 12:00:01,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-09-16 12:00:01,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2022-09-16 12:00:01,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 11940 transitions. [2022-09-16 12:00:01,018 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5206698063840921 [2022-09-16 12:00:01,018 INFO L72 ComplementDD]: Start complementDD. Operand 91 states and 11940 transitions. [2022-09-16 12:00:01,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 11940 transitions. [2022-09-16 12:00:01,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:00:01,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 91 states and 11940 transitions. [2022-09-16 12:00:01,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 92 states, 91 states have (on average 131.2087912087912) internal successors, (11940), 91 states have internal predecessors, (11940), 0 states have call successors, (0), 0 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 12:00:01,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 92 states, 92 states have (on average 252.0) internal successors, (23184), 92 states have internal predecessors, (23184), 0 states have call successors, (0), 0 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 12:00:01,066 INFO L81 ComplementDD]: Finished complementDD. Result has 92 states, 92 states have (on average 252.0) internal successors, (23184), 92 states have internal predecessors, (23184), 0 states have call successors, (0), 0 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 12:00:01,066 INFO L175 Difference]: Start difference. First operand has 335 places, 341 transitions, 1693 flow. Second operand 91 states and 11940 transitions. [2022-09-16 12:00:01,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 506 transitions, 3228 flow [2022-09-16 12:00:01,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 506 transitions, 3139 flow, removed 21 selfloop flow, removed 10 redundant places. [2022-09-16 12:00:01,162 INFO L231 Difference]: Finished difference. Result has 430 places, 416 transitions, 2474 flow [2022-09-16 12:00:01,163 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=1625, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=91, PETRI_FLOW=2474, PETRI_PLACES=430, PETRI_TRANSITIONS=416} [2022-09-16 12:00:01,163 INFO L287 CegarLoopForPetriNet]: 221 programPoint places, 209 predicate places. [2022-09-16 12:00:01,164 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 416 transitions, 2474 flow [2022-09-16 12:00:01,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 131.74545454545455) internal successors, (7246), 55 states have internal predecessors, (7246), 0 states have call successors, (0), 0 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 12:00:01,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:00:01,165 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:01,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-09-16 12:00:01,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-09-16 12:00:01,367 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 12:00:01,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:00:01,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1009207415, now seen corresponding path program 2 times [2022-09-16 12:00:01,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:00:01,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110565685] [2022-09-16 12:00:01,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:00:01,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:00:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:00:02,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:00:02,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:00:02,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110565685] [2022-09-16 12:00:02,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110565685] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:00:02,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572376400] [2022-09-16 12:00:02,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 12:00:02,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:00:02,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:00:02,080 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:00:02,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-09-16 12:00:02,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 12:00:02,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:00:02,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 19 conjunts are in the unsatisfiable core [2022-09-16 12:00:02,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:00:02,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 12:00:02,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 12:00:02,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-16 12:00:02,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 12:00:02,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:00:02,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572376400] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:00:02,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:00:02,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [21] total 32 [2022-09-16 12:00:02,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649716844] [2022-09-16 12:00:02,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:00:02,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 12:00:02,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:00:02,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 12:00:02,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=970, Unknown=0, NotChecked=0, Total=1056 [2022-09-16 12:00:02,721 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 252 [2022-09-16 12:00:02,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 416 transitions, 2474 flow. Second operand has 13 states, 13 states have (on average 172.15384615384616) internal successors, (2238), 13 states have internal predecessors, (2238), 0 states have call successors, (0), 0 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 12:00:02,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:00:02,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 252 [2022-09-16 12:00:02,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:00:12,251 INFO L130 PetriNetUnfolder]: 12669/50055 cut-off events. [2022-09-16 12:00:12,251 INFO L131 PetriNetUnfolder]: For 60490/67395 co-relation queries the response was YES. [2022-09-16 12:00:12,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109163 conditions, 50055 events. 12669/50055 cut-off events. For 60490/67395 co-relation queries the response was YES. Maximal size of possible extension queue 1051. Compared 683052 event pairs, 4844 based on Foata normal form. 909/43595 useless extension candidates. Maximal degree in co-relation 109094. Up to 16070 conditions per place. [2022-09-16 12:00:13,119 INFO L137 encePairwiseOnDemand]: 231/252 looper letters, 155 selfloop transitions, 79 changer transitions 0/459 dead transitions. [2022-09-16 12:00:13,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 459 transitions, 3160 flow [2022-09-16 12:00:13,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 12:00:13,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 12:00:13,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3140 transitions. [2022-09-16 12:00:13,124 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6922398589065256 [2022-09-16 12:00:13,124 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3140 transitions. [2022-09-16 12:00:13,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3140 transitions. [2022-09-16 12:00:13,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:00:13,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3140 transitions. [2022-09-16 12:00:13,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 174.44444444444446) internal successors, (3140), 18 states have internal predecessors, (3140), 0 states have call successors, (0), 0 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 12:00:13,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 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 12:00:13,132 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 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 12:00:13,132 INFO L175 Difference]: Start difference. First operand has 430 places, 416 transitions, 2474 flow. Second operand 18 states and 3140 transitions. [2022-09-16 12:00:13,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 459 transitions, 3160 flow [2022-09-16 12:00:13,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 459 transitions, 2885 flow, removed 65 selfloop flow, removed 42 redundant places. [2022-09-16 12:00:13,533 INFO L231 Difference]: Finished difference. Result has 401 places, 423 transitions, 2463 flow [2022-09-16 12:00:13,534 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=2199, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2463, PETRI_PLACES=401, PETRI_TRANSITIONS=423} [2022-09-16 12:00:13,534 INFO L287 CegarLoopForPetriNet]: 221 programPoint places, 180 predicate places. [2022-09-16 12:00:13,534 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 423 transitions, 2463 flow [2022-09-16 12:00:13,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 172.15384615384616) internal successors, (2238), 13 states have internal predecessors, (2238), 0 states have call successors, (0), 0 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 12:00:13,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:00:13,535 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:13,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-09-16 12:00:13,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-09-16 12:00:13,736 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 12:00:13,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:00:13,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1692479367, now seen corresponding path program 3 times [2022-09-16 12:00:13,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:00:13,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000463350] [2022-09-16 12:00:13,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:00:13,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:00:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:00:14,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:00:14,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:00:14,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000463350] [2022-09-16 12:00:14,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000463350] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:00:14,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85549562] [2022-09-16 12:00:14,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 12:00:14,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:00:14,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:00:14,170 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:00:14,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-09-16 12:00:14,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-09-16 12:00:14,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:00:14,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 12:00:14,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:00:14,634 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 12:00:14,634 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-09-16 12:00:14,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 12:00:14,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:00:14,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85549562] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:00:14,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:00:14,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-09-16 12:00:14,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397466972] [2022-09-16 12:00:14,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:00:14,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:00:14,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:00:14,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:00:14,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-09-16 12:00:14,661 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 252 [2022-09-16 12:00:14,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 423 transitions, 2463 flow. Second operand has 6 states, 6 states have (on average 194.5) internal successors, (1167), 6 states have internal predecessors, (1167), 0 states have call successors, (0), 0 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 12:00:14,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:00:14,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 252 [2022-09-16 12:00:14,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:00:24,946 INFO L130 PetriNetUnfolder]: 14140/53495 cut-off events. [2022-09-16 12:00:24,947 INFO L131 PetriNetUnfolder]: For 77584/84997 co-relation queries the response was YES. [2022-09-16 12:00:25,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122222 conditions, 53495 events. 14140/53495 cut-off events. For 77584/84997 co-relation queries the response was YES. Maximal size of possible extension queue 1142. Compared 728965 event pairs, 6008 based on Foata normal form. 924/46940 useless extension candidates. Maximal degree in co-relation 122090. Up to 19352 conditions per place. [2022-09-16 12:00:25,851 INFO L137 encePairwiseOnDemand]: 245/252 looper letters, 157 selfloop transitions, 42 changer transitions 0/467 dead transitions. [2022-09-16 12:00:25,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 467 transitions, 3161 flow [2022-09-16 12:00:25,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 12:00:25,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 12:00:25,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1219 transitions. [2022-09-16 12:00:25,853 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8062169312169312 [2022-09-16 12:00:25,853 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1219 transitions. [2022-09-16 12:00:25,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1219 transitions. [2022-09-16 12:00:25,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:00:25,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1219 transitions. [2022-09-16 12:00:25,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 203.16666666666666) internal successors, (1219), 6 states have internal predecessors, (1219), 0 states have call successors, (0), 0 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 12:00:25,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 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 12:00:25,856 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 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 12:00:25,856 INFO L175 Difference]: Start difference. First operand has 401 places, 423 transitions, 2463 flow. Second operand 6 states and 1219 transitions. [2022-09-16 12:00:25,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 467 transitions, 3161 flow [2022-09-16 12:00:26,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 467 transitions, 3039 flow, removed 14 selfloop flow, removed 14 redundant places. [2022-09-16 12:00:26,388 INFO L231 Difference]: Finished difference. Result has 395 places, 435 transitions, 2617 flow [2022-09-16 12:00:26,389 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=2347, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2617, PETRI_PLACES=395, PETRI_TRANSITIONS=435} [2022-09-16 12:00:26,389 INFO L287 CegarLoopForPetriNet]: 221 programPoint places, 174 predicate places. [2022-09-16 12:00:26,389 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 435 transitions, 2617 flow [2022-09-16 12:00:26,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 194.5) internal successors, (1167), 6 states have internal predecessors, (1167), 0 states have call successors, (0), 0 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 12:00:26,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:00:26,390 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:26,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-09-16 12:00:26,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-16 12:00:26,602 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 12:00:26,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:00:26,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1693492261, now seen corresponding path program 2 times [2022-09-16 12:00:26,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:00:26,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315592402] [2022-09-16 12:00:26,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:00:26,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:00:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:00:27,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:00:27,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:00:27,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315592402] [2022-09-16 12:00:27,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315592402] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:00:27,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866503210] [2022-09-16 12:00:27,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 12:00:27,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:00:27,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:00:27,123 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:00:27,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-09-16 12:00:27,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 12:00:27,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:00:27,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 12:00:27,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:00:27,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-16 12:00:27,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 12:00:27,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:00:27,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866503210] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:00:27,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:00:27,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 20 [2022-09-16 12:00:27,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278932337] [2022-09-16 12:00:27,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:00:27,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:00:27,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:00:27,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:00:27,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-09-16 12:00:27,399 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 252 [2022-09-16 12:00:27,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 435 transitions, 2617 flow. Second operand has 6 states, 6 states have (on average 194.5) internal successors, (1167), 6 states have internal predecessors, (1167), 0 states have call successors, (0), 0 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 12:00:27,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:00:27,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 252 [2022-09-16 12:00:27,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:00:39,167 INFO L130 PetriNetUnfolder]: 18323/65211 cut-off events. [2022-09-16 12:00:39,167 INFO L131 PetriNetUnfolder]: For 109544/120910 co-relation queries the response was YES. [2022-09-16 12:00:40,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156916 conditions, 65211 events. 18323/65211 cut-off events. For 109544/120910 co-relation queries the response was YES. Maximal size of possible extension queue 1391. Compared 902020 event pairs, 7087 based on Foata normal form. 1523/57607 useless extension candidates. Maximal degree in co-relation 156605. Up to 23028 conditions per place.