/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/chl-simpl-str-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:47:11,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:47:11,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:47:11,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:47:11,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:47:11,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:47:11,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:47:11,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:47:11,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:47:11,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:47:11,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:47:11,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:47:11,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:47:11,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:47:11,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:47:11,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:47:11,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:47:11,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:47:11,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:47:11,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:47:11,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:47:11,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:47:11,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:47:11,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:47:11,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:47:11,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:47:11,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:47:11,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:47:11,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:47:11,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-09-16 11:47:11,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:47:11,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:47:11,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:47:11,373 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 11:47:11,391 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:47:11,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:47:11,392 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:47:11,392 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:47:11,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:47:11,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:47:11,393 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:47:11,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:47:11,393 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:47:11,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:47:11,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:47:11,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:47:11,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:47:11,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:47:11,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:47:11,394 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:47:11,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:47:11,394 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:47:11,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:47:11,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:47:11,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:47:11,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:47:11,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:47:11,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:47:11,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:47:11,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:47:11,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:47:11,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:47:11,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:47:11,396 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:47:11,396 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:47:11,396 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:47:11,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:47:11,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:47:11,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:47:11,590 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:47:11,591 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:47:11,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c [2022-09-16 11:47:11,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46c550323/a2e1cdbdd7264de589043967d7ce48da/FLAG380d6a7a2 [2022-09-16 11:47:12,004 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:47:12,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c [2022-09-16 11:47:12,010 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46c550323/a2e1cdbdd7264de589043967d7ce48da/FLAG380d6a7a2 [2022-09-16 11:47:12,021 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46c550323/a2e1cdbdd7264de589043967d7ce48da [2022-09-16 11:47:12,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:47:12,025 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:47:12,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:47:12,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:47:12,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:47:12,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:47:12" (1/1) ... [2022-09-16 11:47:12,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f32c93d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:12, skipping insertion in model container [2022-09-16 11:47:12,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:47:12" (1/1) ... [2022-09-16 11:47:12,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:47:12,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:47:12,225 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/chl-simpl-str-symm.wvr.c[2303,2316] [2022-09-16 11:47:12,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:47:12,238 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:47:12,266 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/chl-simpl-str-symm.wvr.c[2303,2316] [2022-09-16 11:47:12,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:47:12,277 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:47:12,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:12 WrapperNode [2022-09-16 11:47:12,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:47:12,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:47:12,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:47:12,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:47:12,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:12" (1/1) ... [2022-09-16 11:47:12,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:12" (1/1) ... [2022-09-16 11:47:12,319 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 158 [2022-09-16 11:47:12,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:47:12,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:47:12,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:47:12,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:47:12,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:12" (1/1) ... [2022-09-16 11:47:12,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:12" (1/1) ... [2022-09-16 11:47:12,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:12" (1/1) ... [2022-09-16 11:47:12,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:12" (1/1) ... [2022-09-16 11:47:12,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:12" (1/1) ... [2022-09-16 11:47:12,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:12" (1/1) ... [2022-09-16 11:47:12,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:12" (1/1) ... [2022-09-16 11:47:12,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:47:12,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:47:12,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:47:12,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:47:12,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:12" (1/1) ... [2022-09-16 11:47:12,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:47:12,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:47:12,380 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 11:47:12,383 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 11:47:12,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:47:12,407 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:47:12,407 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:47:12,407 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:47:12,407 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:47:12,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:47:12,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:47:12,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:47:12,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:47:12,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:47:12,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:47:12,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:47:12,408 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 11:47:12,509 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:47:12,510 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:47:12,786 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:47:12,792 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:47:12,792 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-16 11:47:12,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:47:12 BoogieIcfgContainer [2022-09-16 11:47:12,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:47:12,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:47:12,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:47:12,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:47:12,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:47:12" (1/3) ... [2022-09-16 11:47:12,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7286dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:47:12, skipping insertion in model container [2022-09-16 11:47:12,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:12" (2/3) ... [2022-09-16 11:47:12,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7286dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:47:12, skipping insertion in model container [2022-09-16 11:47:12,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:47:12" (3/3) ... [2022-09-16 11:47:12,803 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2022-09-16 11:47:12,815 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:47:12,815 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-09-16 11:47:12,815 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:47:12,882 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 11:47:12,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 219 transitions, 454 flow [2022-09-16 11:47:12,957 INFO L130 PetriNetUnfolder]: 17/217 cut-off events. [2022-09-16 11:47:12,957 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 11:47:12,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 217 events. 17/217 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 459 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 145. Up to 2 conditions per place. [2022-09-16 11:47:12,962 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 219 transitions, 454 flow [2022-09-16 11:47:12,968 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 182 transitions, 373 flow [2022-09-16 11:47:12,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:47:12,979 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;@77ce77c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:47:12,979 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-09-16 11:47:12,997 INFO L130 PetriNetUnfolder]: 4/87 cut-off events. [2022-09-16 11:47:12,997 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-16 11:47:12,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:12,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:12,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:47:13,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:13,002 INFO L85 PathProgramCache]: Analyzing trace with hash 792427284, now seen corresponding path program 1 times [2022-09-16 11:47:13,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:13,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194447954] [2022-09-16 11:47:13,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:13,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:13,208 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 11:47:13,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:13,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194447954] [2022-09-16 11:47:13,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194447954] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:13,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:13,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:13,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267531926] [2022-09-16 11:47:13,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:13,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:13,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:13,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:13,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:13,290 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 219 [2022-09-16 11:47:13,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 182 transitions, 373 flow. Second operand has 6 states, 6 states have (on average 182.83333333333334) internal successors, (1097), 6 states have internal predecessors, (1097), 0 states have call successors, (0), 0 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 11:47:13,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:13,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 219 [2022-09-16 11:47:13,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:13,519 INFO L130 PetriNetUnfolder]: 61/517 cut-off events. [2022-09-16 11:47:13,519 INFO L131 PetriNetUnfolder]: For 32/33 co-relation queries the response was YES. [2022-09-16 11:47:13,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 517 events. 61/517 cut-off events. For 32/33 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2689 event pairs, 3 based on Foata normal form. 33/469 useless extension candidates. Maximal degree in co-relation 545. Up to 84 conditions per place. [2022-09-16 11:47:13,526 INFO L137 encePairwiseOnDemand]: 209/219 looper letters, 28 selfloop transitions, 5 changer transitions 0/182 dead transitions. [2022-09-16 11:47:13,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 182 transitions, 448 flow [2022-09-16 11:47:13,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:47:13,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:47:13,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1128 transitions. [2022-09-16 11:47:13,545 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8584474885844748 [2022-09-16 11:47:13,546 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1128 transitions. [2022-09-16 11:47:13,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1128 transitions. [2022-09-16 11:47:13,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:13,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1128 transitions. [2022-09-16 11:47:13,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 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 11:47:13,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 219.0) internal successors, (1533), 7 states have internal predecessors, (1533), 0 states have call successors, (0), 0 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 11:47:13,566 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 219.0) internal successors, (1533), 7 states have internal predecessors, (1533), 0 states have call successors, (0), 0 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 11:47:13,567 INFO L175 Difference]: Start difference. First operand has 175 places, 182 transitions, 373 flow. Second operand 6 states and 1128 transitions. [2022-09-16 11:47:13,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 182 transitions, 448 flow [2022-09-16 11:47:13,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 182 transitions, 439 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:47:13,576 INFO L231 Difference]: Finished difference. Result has 176 places, 177 transitions, 368 flow [2022-09-16 11:47:13,578 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=368, PETRI_PLACES=176, PETRI_TRANSITIONS=177} [2022-09-16 11:47:13,581 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 1 predicate places. [2022-09-16 11:47:13,581 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 177 transitions, 368 flow [2022-09-16 11:47:13,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.83333333333334) internal successors, (1097), 6 states have internal predecessors, (1097), 0 states have call successors, (0), 0 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 11:47:13,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:13,583 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] [2022-09-16 11:47:13,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:47:13,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:47:13,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:13,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1204557404, now seen corresponding path program 1 times [2022-09-16 11:47:13,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:13,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033121571] [2022-09-16 11:47:13,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:13,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:13,674 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 11:47:13,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:13,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033121571] [2022-09-16 11:47:13,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033121571] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:13,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:13,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:13,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290001410] [2022-09-16 11:47:13,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:13,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:13,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:13,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:13,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:13,680 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 219 [2022-09-16 11:47:13,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 177 transitions, 368 flow. Second operand has 4 states, 4 states have (on average 185.75) internal successors, (743), 4 states have internal predecessors, (743), 0 states have call successors, (0), 0 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 11:47:13,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:13,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 219 [2022-09-16 11:47:13,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:13,767 INFO L130 PetriNetUnfolder]: 49/477 cut-off events. [2022-09-16 11:47:13,768 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-09-16 11:47:13,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 477 events. 49/477 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2567 event pairs, 12 based on Foata normal form. 0/409 useless extension candidates. Maximal degree in co-relation 413. Up to 43 conditions per place. [2022-09-16 11:47:13,773 INFO L137 encePairwiseOnDemand]: 213/219 looper letters, 32 selfloop transitions, 4 changer transitions 0/188 dead transitions. [2022-09-16 11:47:13,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 188 transitions, 467 flow [2022-09-16 11:47:13,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:13,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:13,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 774 transitions. [2022-09-16 11:47:13,779 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8835616438356164 [2022-09-16 11:47:13,779 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 774 transitions. [2022-09-16 11:47:13,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 774 transitions. [2022-09-16 11:47:13,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:13,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 774 transitions. [2022-09-16 11:47:13,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 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 11:47:13,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 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 11:47:13,783 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 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 11:47:13,783 INFO L175 Difference]: Start difference. First operand has 176 places, 177 transitions, 368 flow. Second operand 4 states and 774 transitions. [2022-09-16 11:47:13,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 188 transitions, 467 flow [2022-09-16 11:47:13,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 188 transitions, 458 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:13,787 INFO L231 Difference]: Finished difference. Result has 177 places, 178 transitions, 383 flow [2022-09-16 11:47:13,788 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=383, PETRI_PLACES=177, PETRI_TRANSITIONS=178} [2022-09-16 11:47:13,789 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 2 predicate places. [2022-09-16 11:47:13,789 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 178 transitions, 383 flow [2022-09-16 11:47:13,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 185.75) internal successors, (743), 4 states have internal predecessors, (743), 0 states have call successors, (0), 0 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 11:47:13,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:13,789 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] [2022-09-16 11:47:13,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:47:13,790 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:47:13,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:13,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1426974029, now seen corresponding path program 1 times [2022-09-16 11:47:13,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:13,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104118630] [2022-09-16 11:47:13,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:13,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:13,854 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 11:47:13,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:13,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104118630] [2022-09-16 11:47:13,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104118630] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:13,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:13,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:13,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522942279] [2022-09-16 11:47:13,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:13,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:13,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:13,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:13,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:13,857 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 219 [2022-09-16 11:47:13,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 178 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 0 states have call successors, (0), 0 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 11:47:13,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:13,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 219 [2022-09-16 11:47:13,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:13,974 INFO L130 PetriNetUnfolder]: 87/604 cut-off events. [2022-09-16 11:47:13,974 INFO L131 PetriNetUnfolder]: For 60/61 co-relation queries the response was YES. [2022-09-16 11:47:13,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 604 events. 87/604 cut-off events. For 60/61 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3684 event pairs, 1 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 651. Up to 145 conditions per place. [2022-09-16 11:47:13,978 INFO L137 encePairwiseOnDemand]: 213/219 looper letters, 27 selfloop transitions, 5 changer transitions 0/181 dead transitions. [2022-09-16 11:47:13,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 181 transitions, 455 flow [2022-09-16 11:47:13,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:47:13,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:47:13,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1119 transitions. [2022-09-16 11:47:13,980 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8515981735159818 [2022-09-16 11:47:13,980 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1119 transitions. [2022-09-16 11:47:13,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1119 transitions. [2022-09-16 11:47:13,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:13,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1119 transitions. [2022-09-16 11:47:13,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 186.5) internal successors, (1119), 6 states have internal predecessors, (1119), 0 states have call successors, (0), 0 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 11:47:13,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 219.0) internal successors, (1533), 7 states have internal predecessors, (1533), 0 states have call successors, (0), 0 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 11:47:13,986 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 219.0) internal successors, (1533), 7 states have internal predecessors, (1533), 0 states have call successors, (0), 0 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 11:47:13,986 INFO L175 Difference]: Start difference. First operand has 177 places, 178 transitions, 383 flow. Second operand 6 states and 1119 transitions. [2022-09-16 11:47:13,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 181 transitions, 455 flow [2022-09-16 11:47:13,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 181 transitions, 455 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:47:13,990 INFO L231 Difference]: Finished difference. Result has 181 places, 177 transitions, 391 flow [2022-09-16 11:47:13,991 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=391, PETRI_PLACES=181, PETRI_TRANSITIONS=177} [2022-09-16 11:47:13,992 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 6 predicate places. [2022-09-16 11:47:13,992 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 177 transitions, 391 flow [2022-09-16 11:47:13,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 0 states have call successors, (0), 0 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 11:47:13,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:13,993 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] [2022-09-16 11:47:13,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:47:13,993 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:47:13,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:13,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1286521304, now seen corresponding path program 1 times [2022-09-16 11:47:13,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:13,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973832496] [2022-09-16 11:47:13,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:13,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:14,077 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 11:47:14,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:14,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973832496] [2022-09-16 11:47:14,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973832496] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:14,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:14,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:14,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200234423] [2022-09-16 11:47:14,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:14,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:14,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:14,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:14,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:14,079 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 219 [2022-09-16 11:47:14,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 177 transitions, 391 flow. Second operand has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 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 11:47:14,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:14,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 219 [2022-09-16 11:47:14,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:14,183 INFO L130 PetriNetUnfolder]: 98/615 cut-off events. [2022-09-16 11:47:14,183 INFO L131 PetriNetUnfolder]: For 94/97 co-relation queries the response was YES. [2022-09-16 11:47:14,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 615 events. 98/615 cut-off events. For 94/97 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4242 event pairs, 36 based on Foata normal form. 0/494 useless extension candidates. Maximal degree in co-relation 797. Up to 95 conditions per place. [2022-09-16 11:47:14,190 INFO L137 encePairwiseOnDemand]: 213/219 looper letters, 31 selfloop transitions, 4 changer transitions 0/187 dead transitions. [2022-09-16 11:47:14,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 187 transitions, 483 flow [2022-09-16 11:47:14,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:14,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:14,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 773 transitions. [2022-09-16 11:47:14,192 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.882420091324201 [2022-09-16 11:47:14,192 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 773 transitions. [2022-09-16 11:47:14,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 773 transitions. [2022-09-16 11:47:14,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:14,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 773 transitions. [2022-09-16 11:47:14,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 193.25) internal successors, (773), 4 states have internal predecessors, (773), 0 states have call successors, (0), 0 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 11:47:14,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 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 11:47:14,196 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 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 11:47:14,196 INFO L175 Difference]: Start difference. First operand has 181 places, 177 transitions, 391 flow. Second operand 4 states and 773 transitions. [2022-09-16 11:47:14,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 187 transitions, 483 flow [2022-09-16 11:47:14,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 187 transitions, 474 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:14,199 INFO L231 Difference]: Finished difference. Result has 182 places, 178 transitions, 406 flow [2022-09-16 11:47:14,199 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=406, PETRI_PLACES=182, PETRI_TRANSITIONS=178} [2022-09-16 11:47:14,200 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 7 predicate places. [2022-09-16 11:47:14,201 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 178 transitions, 406 flow [2022-09-16 11:47:14,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 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 11:47:14,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:14,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:14,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:47:14,204 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:47:14,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:14,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1200796427, now seen corresponding path program 1 times [2022-09-16 11:47:14,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:14,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442393018] [2022-09-16 11:47:14,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:14,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:14,261 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 11:47:14,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:14,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442393018] [2022-09-16 11:47:14,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442393018] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:14,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:14,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:14,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374081799] [2022-09-16 11:47:14,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:14,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:14,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:14,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:14,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:14,264 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 219 [2022-09-16 11:47:14,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 178 transitions, 406 flow. Second operand has 4 states, 4 states have (on average 186.25) internal successors, (745), 4 states have internal predecessors, (745), 0 states have call successors, (0), 0 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 11:47:14,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:14,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 219 [2022-09-16 11:47:14,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:14,364 INFO L130 PetriNetUnfolder]: 44/604 cut-off events. [2022-09-16 11:47:14,364 INFO L131 PetriNetUnfolder]: For 34/35 co-relation queries the response was YES. [2022-09-16 11:47:14,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 604 events. 44/604 cut-off events. For 34/35 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3524 event pairs, 12 based on Foata normal form. 2/539 useless extension candidates. Maximal degree in co-relation 651. Up to 41 conditions per place. [2022-09-16 11:47:14,369 INFO L137 encePairwiseOnDemand]: 215/219 looper letters, 32 selfloop transitions, 3 changer transitions 0/187 dead transitions. [2022-09-16 11:47:14,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 187 transitions, 495 flow [2022-09-16 11:47:14,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:14,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:14,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 772 transitions. [2022-09-16 11:47:14,371 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8812785388127854 [2022-09-16 11:47:14,371 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 772 transitions. [2022-09-16 11:47:14,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 772 transitions. [2022-09-16 11:47:14,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:14,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 772 transitions. [2022-09-16 11:47:14,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 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 11:47:14,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 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 11:47:14,375 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 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 11:47:14,375 INFO L175 Difference]: Start difference. First operand has 182 places, 178 transitions, 406 flow. Second operand 4 states and 772 transitions. [2022-09-16 11:47:14,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 187 transitions, 495 flow [2022-09-16 11:47:14,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 187 transitions, 493 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:14,378 INFO L231 Difference]: Finished difference. Result has 184 places, 177 transitions, 404 flow [2022-09-16 11:47:14,378 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=404, PETRI_PLACES=184, PETRI_TRANSITIONS=177} [2022-09-16 11:47:14,380 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 9 predicate places. [2022-09-16 11:47:14,380 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 177 transitions, 404 flow [2022-09-16 11:47:14,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 186.25) internal successors, (745), 4 states have internal predecessors, (745), 0 states have call successors, (0), 0 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 11:47:14,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:14,381 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] [2022-09-16 11:47:14,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:47:14,381 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:47:14,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:14,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1430015842, now seen corresponding path program 1 times [2022-09-16 11:47:14,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:14,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491576689] [2022-09-16 11:47:14,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:14,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:14,451 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 11:47:14,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:14,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491576689] [2022-09-16 11:47:14,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491576689] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:14,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:14,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:14,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479100301] [2022-09-16 11:47:14,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:14,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:14,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:14,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:14,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:14,454 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 219 [2022-09-16 11:47:14,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 177 transitions, 404 flow. Second operand has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 0 states have call successors, (0), 0 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 11:47:14,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:14,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 219 [2022-09-16 11:47:14,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:14,584 INFO L130 PetriNetUnfolder]: 66/800 cut-off events. [2022-09-16 11:47:14,584 INFO L131 PetriNetUnfolder]: For 30/31 co-relation queries the response was YES. [2022-09-16 11:47:14,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1069 conditions, 800 events. 66/800 cut-off events. For 30/31 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5184 event pairs, 3 based on Foata normal form. 0/712 useless extension candidates. Maximal degree in co-relation 849. Up to 109 conditions per place. [2022-09-16 11:47:14,589 INFO L137 encePairwiseOnDemand]: 213/219 looper letters, 26 selfloop transitions, 5 changer transitions 0/181 dead transitions. [2022-09-16 11:47:14,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 181 transitions, 479 flow [2022-09-16 11:47:14,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:47:14,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:47:14,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1118 transitions. [2022-09-16 11:47:14,592 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8508371385083714 [2022-09-16 11:47:14,592 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1118 transitions. [2022-09-16 11:47:14,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1118 transitions. [2022-09-16 11:47:14,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:14,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1118 transitions. [2022-09-16 11:47:14,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 186.33333333333334) internal successors, (1118), 6 states have internal predecessors, (1118), 0 states have call successors, (0), 0 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 11:47:14,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 219.0) internal successors, (1533), 7 states have internal predecessors, (1533), 0 states have call successors, (0), 0 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 11:47:14,596 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 219.0) internal successors, (1533), 7 states have internal predecessors, (1533), 0 states have call successors, (0), 0 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 11:47:14,597 INFO L175 Difference]: Start difference. First operand has 184 places, 177 transitions, 404 flow. Second operand 6 states and 1118 transitions. [2022-09-16 11:47:14,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 181 transitions, 479 flow [2022-09-16 11:47:14,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 181 transitions, 474 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:47:14,599 INFO L231 Difference]: Finished difference. Result has 186 places, 176 transitions, 407 flow [2022-09-16 11:47:14,600 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=407, PETRI_PLACES=186, PETRI_TRANSITIONS=176} [2022-09-16 11:47:14,600 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 11 predicate places. [2022-09-16 11:47:14,600 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 176 transitions, 407 flow [2022-09-16 11:47:14,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 0 states have call successors, (0), 0 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 11:47:14,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:14,601 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] [2022-09-16 11:47:14,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:47:14,601 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:47:14,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:14,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1019657569, now seen corresponding path program 1 times [2022-09-16 11:47:14,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:14,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536464916] [2022-09-16 11:47:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:14,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:14,626 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 11:47:14,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:14,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536464916] [2022-09-16 11:47:14,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536464916] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:14,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:14,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:14,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88752523] [2022-09-16 11:47:14,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:14,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:14,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:14,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:14,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:14,628 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 219 [2022-09-16 11:47:14,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 176 transitions, 407 flow. Second operand has 4 states, 4 states have (on average 186.5) internal successors, (746), 4 states have internal predecessors, (746), 0 states have call successors, (0), 0 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 11:47:14,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:14,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 219 [2022-09-16 11:47:14,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:14,704 INFO L130 PetriNetUnfolder]: 50/661 cut-off events. [2022-09-16 11:47:14,704 INFO L131 PetriNetUnfolder]: For 18/19 co-relation queries the response was YES. [2022-09-16 11:47:14,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 661 events. 50/661 cut-off events. For 18/19 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4078 event pairs, 18 based on Foata normal form. 2/592 useless extension candidates. Maximal degree in co-relation 751. Up to 60 conditions per place. [2022-09-16 11:47:14,709 INFO L137 encePairwiseOnDemand]: 215/219 looper letters, 29 selfloop transitions, 3 changer transitions 0/185 dead transitions. [2022-09-16 11:47:14,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 185 transitions, 492 flow [2022-09-16 11:47:14,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:14,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:14,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 769 transitions. [2022-09-16 11:47:14,711 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8778538812785388 [2022-09-16 11:47:14,711 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 769 transitions. [2022-09-16 11:47:14,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 769 transitions. [2022-09-16 11:47:14,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:14,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 769 transitions. [2022-09-16 11:47:14,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 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 11:47:14,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 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 11:47:14,714 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 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 11:47:14,714 INFO L175 Difference]: Start difference. First operand has 186 places, 176 transitions, 407 flow. Second operand 4 states and 769 transitions. [2022-09-16 11:47:14,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 185 transitions, 492 flow [2022-09-16 11:47:14,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 185 transitions, 481 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:47:14,717 INFO L231 Difference]: Finished difference. Result has 184 places, 176 transitions, 405 flow [2022-09-16 11:47:14,717 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=405, PETRI_PLACES=184, PETRI_TRANSITIONS=176} [2022-09-16 11:47:14,718 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 9 predicate places. [2022-09-16 11:47:14,718 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 176 transitions, 405 flow [2022-09-16 11:47:14,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 186.5) internal successors, (746), 4 states have internal predecessors, (746), 0 states have call successors, (0), 0 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 11:47:14,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:14,719 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] [2022-09-16 11:47:14,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:47:14,719 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:47:14,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:14,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1002034447, now seen corresponding path program 1 times [2022-09-16 11:47:14,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:14,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672730700] [2022-09-16 11:47:14,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:14,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:14,744 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 11:47:14,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:14,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672730700] [2022-09-16 11:47:14,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672730700] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:14,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:14,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:14,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513919675] [2022-09-16 11:47:14,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:14,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:14,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:14,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:14,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:14,748 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 219 [2022-09-16 11:47:14,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 176 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 186.5) internal successors, (746), 4 states have internal predecessors, (746), 0 states have call successors, (0), 0 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 11:47:14,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:14,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 219 [2022-09-16 11:47:14,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:14,857 INFO L130 PetriNetUnfolder]: 121/750 cut-off events. [2022-09-16 11:47:14,857 INFO L131 PetriNetUnfolder]: For 168/172 co-relation queries the response was YES. [2022-09-16 11:47:14,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 750 events. 121/750 cut-off events. For 168/172 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5592 event pairs, 48 based on Foata normal form. 5/605 useless extension candidates. Maximal degree in co-relation 1039. Up to 116 conditions per place. [2022-09-16 11:47:14,863 INFO L137 encePairwiseOnDemand]: 215/219 looper letters, 31 selfloop transitions, 3 changer transitions 0/184 dead transitions. [2022-09-16 11:47:14,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 184 transitions, 487 flow [2022-09-16 11:47:14,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:14,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:14,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 771 transitions. [2022-09-16 11:47:14,865 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8801369863013698 [2022-09-16 11:47:14,865 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 771 transitions. [2022-09-16 11:47:14,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 771 transitions. [2022-09-16 11:47:14,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:14,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 771 transitions. [2022-09-16 11:47:14,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 0 states have call successors, (0), 0 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 11:47:14,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 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 11:47:14,888 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 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 11:47:14,888 INFO L175 Difference]: Start difference. First operand has 184 places, 176 transitions, 405 flow. Second operand 4 states and 771 transitions. [2022-09-16 11:47:14,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 184 transitions, 487 flow [2022-09-16 11:47:14,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 184 transitions, 483 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:47:14,890 INFO L231 Difference]: Finished difference. Result has 185 places, 175 transitions, 401 flow [2022-09-16 11:47:14,891 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=401, PETRI_PLACES=185, PETRI_TRANSITIONS=175} [2022-09-16 11:47:14,892 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 10 predicate places. [2022-09-16 11:47:14,893 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 175 transitions, 401 flow [2022-09-16 11:47:14,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 186.5) internal successors, (746), 4 states have internal predecessors, (746), 0 states have call successors, (0), 0 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 11:47:14,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:14,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:14,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:47:14,893 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:47:14,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:14,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1995441795, now seen corresponding path program 1 times [2022-09-16 11:47:14,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:14,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031043322] [2022-09-16 11:47:14,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:14,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:14,967 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 11:47:14,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:14,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031043322] [2022-09-16 11:47:14,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031043322] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:14,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:14,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:14,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585448091] [2022-09-16 11:47:14,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:14,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:14,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:14,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:14,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:14,970 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 219 [2022-09-16 11:47:14,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 175 transitions, 401 flow. Second operand has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 0 states have call successors, (0), 0 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 11:47:14,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:14,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 219 [2022-09-16 11:47:14,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:15,114 INFO L130 PetriNetUnfolder]: 88/899 cut-off events. [2022-09-16 11:47:15,114 INFO L131 PetriNetUnfolder]: For 31/32 co-relation queries the response was YES. [2022-09-16 11:47:15,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1284 conditions, 899 events. 88/899 cut-off events. For 31/32 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6272 event pairs, 3 based on Foata normal form. 0/813 useless extension candidates. Maximal degree in co-relation 1072. Up to 99 conditions per place. [2022-09-16 11:47:15,120 INFO L137 encePairwiseOnDemand]: 209/219 looper letters, 33 selfloop transitions, 9 changer transitions 0/186 dead transitions. [2022-09-16 11:47:15,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 186 transitions, 516 flow [2022-09-16 11:47:15,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:47:15,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:47:15,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1451 transitions. [2022-09-16 11:47:15,123 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8281963470319634 [2022-09-16 11:47:15,123 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1451 transitions. [2022-09-16 11:47:15,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1451 transitions. [2022-09-16 11:47:15,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:15,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1451 transitions. [2022-09-16 11:47:15,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 181.375) internal successors, (1451), 8 states have internal predecessors, (1451), 0 states have call successors, (0), 0 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 11:47:15,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 219.0) internal successors, (1971), 9 states have internal predecessors, (1971), 0 states have call successors, (0), 0 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 11:47:15,138 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 219.0) internal successors, (1971), 9 states have internal predecessors, (1971), 0 states have call successors, (0), 0 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 11:47:15,138 INFO L175 Difference]: Start difference. First operand has 185 places, 175 transitions, 401 flow. Second operand 8 states and 1451 transitions. [2022-09-16 11:47:15,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 186 transitions, 516 flow [2022-09-16 11:47:15,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 186 transitions, 511 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:47:15,145 INFO L231 Difference]: Finished difference. Result has 192 places, 176 transitions, 426 flow [2022-09-16 11:47:15,146 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=426, PETRI_PLACES=192, PETRI_TRANSITIONS=176} [2022-09-16 11:47:15,146 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 17 predicate places. [2022-09-16 11:47:15,146 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 176 transitions, 426 flow [2022-09-16 11:47:15,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 0 states have call successors, (0), 0 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 11:47:15,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:15,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:15,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:47:15,148 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:47:15,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:15,148 INFO L85 PathProgramCache]: Analyzing trace with hash 998297437, now seen corresponding path program 1 times [2022-09-16 11:47:15,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:15,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917765287] [2022-09-16 11:47:15,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:15,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:15,199 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 11:47:15,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:15,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917765287] [2022-09-16 11:47:15,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917765287] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:15,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:15,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:15,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328246223] [2022-09-16 11:47:15,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:15,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:15,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:15,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:15,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:15,204 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 219 [2022-09-16 11:47:15,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 176 transitions, 426 flow. Second operand has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 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 11:47:15,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:15,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 219 [2022-09-16 11:47:15,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:15,346 INFO L130 PetriNetUnfolder]: 121/950 cut-off events. [2022-09-16 11:47:15,346 INFO L131 PetriNetUnfolder]: For 148/149 co-relation queries the response was YES. [2022-09-16 11:47:15,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 950 events. 121/950 cut-off events. For 148/149 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6984 event pairs, 5 based on Foata normal form. 0/807 useless extension candidates. Maximal degree in co-relation 1165. Up to 226 conditions per place. [2022-09-16 11:47:15,352 INFO L137 encePairwiseOnDemand]: 213/219 looper letters, 25 selfloop transitions, 5 changer transitions 0/179 dead transitions. [2022-09-16 11:47:15,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 179 transitions, 498 flow [2022-09-16 11:47:15,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:47:15,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:47:15,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1117 transitions. [2022-09-16 11:47:15,354 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.850076103500761 [2022-09-16 11:47:15,354 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1117 transitions. [2022-09-16 11:47:15,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1117 transitions. [2022-09-16 11:47:15,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:15,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1117 transitions. [2022-09-16 11:47:15,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 186.16666666666666) internal successors, (1117), 6 states have internal predecessors, (1117), 0 states have call successors, (0), 0 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 11:47:15,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 219.0) internal successors, (1533), 7 states have internal predecessors, (1533), 0 states have call successors, (0), 0 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 11:47:15,360 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 219.0) internal successors, (1533), 7 states have internal predecessors, (1533), 0 states have call successors, (0), 0 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 11:47:15,360 INFO L175 Difference]: Start difference. First operand has 192 places, 176 transitions, 426 flow. Second operand 6 states and 1117 transitions. [2022-09-16 11:47:15,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 179 transitions, 498 flow [2022-09-16 11:47:15,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 179 transitions, 485 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:15,363 INFO L231 Difference]: Finished difference. Result has 192 places, 175 transitions, 425 flow [2022-09-16 11:47:15,363 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=425, PETRI_PLACES=192, PETRI_TRANSITIONS=175} [2022-09-16 11:47:15,364 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 17 predicate places. [2022-09-16 11:47:15,364 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 175 transitions, 425 flow [2022-09-16 11:47:15,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 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 11:47:15,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:15,365 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] [2022-09-16 11:47:15,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:47:15,365 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:47:15,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:15,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1729154098, now seen corresponding path program 1 times [2022-09-16 11:47:15,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:15,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881805537] [2022-09-16 11:47:15,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:15,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:15,434 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 11:47:15,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:15,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881805537] [2022-09-16 11:47:15,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881805537] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:15,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:15,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:15,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328355462] [2022-09-16 11:47:15,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:15,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:15,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:15,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:15,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:15,437 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 219 [2022-09-16 11:47:15,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 175 transitions, 425 flow. Second operand has 8 states, 8 states have (on average 178.125) internal successors, (1425), 8 states have internal predecessors, (1425), 0 states have call successors, (0), 0 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 11:47:15,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:15,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 219 [2022-09-16 11:47:15,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:15,589 INFO L130 PetriNetUnfolder]: 76/877 cut-off events. [2022-09-16 11:47:15,590 INFO L131 PetriNetUnfolder]: For 87/88 co-relation queries the response was YES. [2022-09-16 11:47:15,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1295 conditions, 877 events. 76/877 cut-off events. For 87/88 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5991 event pairs, 3 based on Foata normal form. 0/805 useless extension candidates. Maximal degree in co-relation 1089. Up to 89 conditions per place. [2022-09-16 11:47:15,595 INFO L137 encePairwiseOnDemand]: 209/219 looper letters, 36 selfloop transitions, 9 changer transitions 0/188 dead transitions. [2022-09-16 11:47:15,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 188 transitions, 565 flow [2022-09-16 11:47:15,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:47:15,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:47:15,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1453 transitions. [2022-09-16 11:47:15,598 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.829337899543379 [2022-09-16 11:47:15,598 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1453 transitions. [2022-09-16 11:47:15,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1453 transitions. [2022-09-16 11:47:15,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:15,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1453 transitions. [2022-09-16 11:47:15,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 181.625) internal successors, (1453), 8 states have internal predecessors, (1453), 0 states have call successors, (0), 0 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 11:47:15,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 219.0) internal successors, (1971), 9 states have internal predecessors, (1971), 0 states have call successors, (0), 0 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 11:47:15,603 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 219.0) internal successors, (1971), 9 states have internal predecessors, (1971), 0 states have call successors, (0), 0 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 11:47:15,603 INFO L175 Difference]: Start difference. First operand has 192 places, 175 transitions, 425 flow. Second operand 8 states and 1453 transitions. [2022-09-16 11:47:15,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 188 transitions, 565 flow [2022-09-16 11:47:15,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 188 transitions, 548 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:15,607 INFO L231 Difference]: Finished difference. Result has 197 places, 176 transitions, 446 flow [2022-09-16 11:47:15,607 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=446, PETRI_PLACES=197, PETRI_TRANSITIONS=176} [2022-09-16 11:47:15,608 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 22 predicate places. [2022-09-16 11:47:15,608 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 176 transitions, 446 flow [2022-09-16 11:47:15,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 178.125) internal successors, (1425), 8 states have internal predecessors, (1425), 0 states have call successors, (0), 0 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 11:47:15,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:15,618 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] [2022-09-16 11:47:15,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:47:15,618 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:47:15,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:15,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1833488192, now seen corresponding path program 1 times [2022-09-16 11:47:15,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:15,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226215839] [2022-09-16 11:47:15,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:15,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:15,652 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 11:47:15,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:15,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226215839] [2022-09-16 11:47:15,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226215839] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:15,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:15,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:15,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411427204] [2022-09-16 11:47:15,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:15,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:47:15,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:15,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:47:15,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:47:15,654 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 219 [2022-09-16 11:47:15,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 176 transitions, 446 flow. Second operand has 5 states, 5 states have (on average 182.8) internal successors, (914), 5 states have internal predecessors, (914), 0 states have call successors, (0), 0 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 11:47:15,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:15,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 219 [2022-09-16 11:47:15,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:15,754 INFO L130 PetriNetUnfolder]: 149/799 cut-off events. [2022-09-16 11:47:15,755 INFO L131 PetriNetUnfolder]: For 177/181 co-relation queries the response was YES. [2022-09-16 11:47:15,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 799 events. 149/799 cut-off events. For 177/181 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6178 event pairs, 60 based on Foata normal form. 0/645 useless extension candidates. Maximal degree in co-relation 1173. Up to 147 conditions per place. [2022-09-16 11:47:15,760 INFO L137 encePairwiseOnDemand]: 212/219 looper letters, 36 selfloop transitions, 7 changer transitions 0/191 dead transitions. [2022-09-16 11:47:15,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 191 transitions, 564 flow [2022-09-16 11:47:15,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:47:15,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:47:15,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1124 transitions. [2022-09-16 11:47:15,763 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8554033485540334 [2022-09-16 11:47:15,763 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1124 transitions. [2022-09-16 11:47:15,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1124 transitions. [2022-09-16 11:47:15,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:15,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1124 transitions. [2022-09-16 11:47:15,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 187.33333333333334) internal successors, (1124), 6 states have internal predecessors, (1124), 0 states have call successors, (0), 0 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 11:47:15,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 219.0) internal successors, (1533), 7 states have internal predecessors, (1533), 0 states have call successors, (0), 0 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 11:47:15,767 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 219.0) internal successors, (1533), 7 states have internal predecessors, (1533), 0 states have call successors, (0), 0 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 11:47:15,767 INFO L175 Difference]: Start difference. First operand has 197 places, 176 transitions, 446 flow. Second operand 6 states and 1124 transitions. [2022-09-16 11:47:15,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 191 transitions, 564 flow [2022-09-16 11:47:15,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 191 transitions, 550 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-09-16 11:47:15,770 INFO L231 Difference]: Finished difference. Result has 198 places, 179 transitions, 467 flow [2022-09-16 11:47:15,770 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=467, PETRI_PLACES=198, PETRI_TRANSITIONS=179} [2022-09-16 11:47:15,771 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 23 predicate places. [2022-09-16 11:47:15,771 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 179 transitions, 467 flow [2022-09-16 11:47:15,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.8) internal successors, (914), 5 states have internal predecessors, (914), 0 states have call successors, (0), 0 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 11:47:15,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:15,772 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] [2022-09-16 11:47:15,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 11:47:15,772 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:47:15,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:15,772 INFO L85 PathProgramCache]: Analyzing trace with hash -662288810, now seen corresponding path program 1 times [2022-09-16 11:47:15,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:15,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378211791] [2022-09-16 11:47:15,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:15,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:15,825 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 11:47:15,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:15,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378211791] [2022-09-16 11:47:15,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378211791] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:15,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:15,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:15,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032985409] [2022-09-16 11:47:15,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:15,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:15,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:15,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:15,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:15,829 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 219 [2022-09-16 11:47:15,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 179 transitions, 467 flow. Second operand has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 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 11:47:15,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:15,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 219 [2022-09-16 11:47:15,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:15,943 INFO L130 PetriNetUnfolder]: 62/567 cut-off events. [2022-09-16 11:47:15,943 INFO L131 PetriNetUnfolder]: For 60/61 co-relation queries the response was YES. [2022-09-16 11:47:15,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 567 events. 62/567 cut-off events. For 60/61 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3397 event pairs, 29 based on Foata normal form. 2/532 useless extension candidates. Maximal degree in co-relation 880. Up to 91 conditions per place. [2022-09-16 11:47:15,948 INFO L137 encePairwiseOnDemand]: 211/219 looper letters, 38 selfloop transitions, 7 changer transitions 0/189 dead transitions. [2022-09-16 11:47:15,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 189 transitions, 586 flow [2022-09-16 11:47:15,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:15,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:15,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1263 transitions. [2022-09-16 11:47:15,950 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8238747553816047 [2022-09-16 11:47:15,950 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1263 transitions. [2022-09-16 11:47:15,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1263 transitions. [2022-09-16 11:47:15,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:15,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1263 transitions. [2022-09-16 11:47:15,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 180.42857142857142) internal successors, (1263), 7 states have internal predecessors, (1263), 0 states have call successors, (0), 0 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 11:47:15,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 219.0) internal successors, (1752), 8 states have internal predecessors, (1752), 0 states have call successors, (0), 0 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 11:47:15,955 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 219.0) internal successors, (1752), 8 states have internal predecessors, (1752), 0 states have call successors, (0), 0 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 11:47:15,955 INFO L175 Difference]: Start difference. First operand has 198 places, 179 transitions, 467 flow. Second operand 7 states and 1263 transitions. [2022-09-16 11:47:15,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 189 transitions, 586 flow [2022-09-16 11:47:15,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 189 transitions, 581 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:47:15,958 INFO L231 Difference]: Finished difference. Result has 205 places, 182 transitions, 498 flow [2022-09-16 11:47:15,959 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=498, PETRI_PLACES=205, PETRI_TRANSITIONS=182} [2022-09-16 11:47:15,959 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 30 predicate places. [2022-09-16 11:47:15,959 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 182 transitions, 498 flow [2022-09-16 11:47:15,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 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 11:47:15,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:15,960 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] [2022-09-16 11:47:15,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:47:15,960 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:47:15,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:15,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1670914184, now seen corresponding path program 1 times [2022-09-16 11:47:15,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:15,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571441316] [2022-09-16 11:47:15,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:15,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:16,001 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 11:47:16,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:16,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571441316] [2022-09-16 11:47:16,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571441316] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:16,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:16,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:16,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409910663] [2022-09-16 11:47:16,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:16,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:16,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:16,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:16,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:16,003 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 219 [2022-09-16 11:47:16,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 182 transitions, 498 flow. Second operand has 6 states, 6 states have (on average 177.5) internal successors, (1065), 6 states have internal predecessors, (1065), 0 states have call successors, (0), 0 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 11:47:16,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:16,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 219 [2022-09-16 11:47:16,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:16,146 INFO L130 PetriNetUnfolder]: 58/561 cut-off events. [2022-09-16 11:47:16,147 INFO L131 PetriNetUnfolder]: For 76/77 co-relation queries the response was YES. [2022-09-16 11:47:16,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 561 events. 58/561 cut-off events. For 76/77 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3307 event pairs, 24 based on Foata normal form. 2/536 useless extension candidates. Maximal degree in co-relation 908. Up to 76 conditions per place. [2022-09-16 11:47:16,152 INFO L137 encePairwiseOnDemand]: 211/219 looper letters, 47 selfloop transitions, 8 changer transitions 0/199 dead transitions. [2022-09-16 11:47:16,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 199 transitions, 673 flow [2022-09-16 11:47:16,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:16,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:16,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1269 transitions. [2022-09-16 11:47:16,154 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8277886497064579 [2022-09-16 11:47:16,155 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1269 transitions. [2022-09-16 11:47:16,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1269 transitions. [2022-09-16 11:47:16,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:16,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1269 transitions. [2022-09-16 11:47:16,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 181.28571428571428) internal successors, (1269), 7 states have internal predecessors, (1269), 0 states have call successors, (0), 0 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 11:47:16,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 219.0) internal successors, (1752), 8 states have internal predecessors, (1752), 0 states have call successors, (0), 0 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 11:47:16,159 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 219.0) internal successors, (1752), 8 states have internal predecessors, (1752), 0 states have call successors, (0), 0 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 11:47:16,159 INFO L175 Difference]: Start difference. First operand has 205 places, 182 transitions, 498 flow. Second operand 7 states and 1269 transitions. [2022-09-16 11:47:16,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 199 transitions, 673 flow [2022-09-16 11:47:16,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 199 transitions, 671 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:16,163 INFO L231 Difference]: Finished difference. Result has 213 places, 186 transitions, 545 flow [2022-09-16 11:47:16,163 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=545, PETRI_PLACES=213, PETRI_TRANSITIONS=186} [2022-09-16 11:47:16,163 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 38 predicate places. [2022-09-16 11:47:16,164 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 186 transitions, 545 flow [2022-09-16 11:47:16,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.5) internal successors, (1065), 6 states have internal predecessors, (1065), 0 states have call successors, (0), 0 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 11:47:16,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:16,164 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] [2022-09-16 11:47:16,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 11:47:16,164 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:47:16,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:16,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1362547934, now seen corresponding path program 1 times [2022-09-16 11:47:16,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:16,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410558515] [2022-09-16 11:47:16,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:16,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:16,231 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 11:47:16,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:16,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410558515] [2022-09-16 11:47:16,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410558515] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:16,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:16,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:16,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840406855] [2022-09-16 11:47:16,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:16,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:16,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:16,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:16,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:16,233 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 219 [2022-09-16 11:47:16,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 186 transitions, 545 flow. Second operand has 8 states, 8 states have (on average 178.125) internal successors, (1425), 8 states have internal predecessors, (1425), 0 states have call successors, (0), 0 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 11:47:16,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:16,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 219 [2022-09-16 11:47:16,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:16,410 INFO L130 PetriNetUnfolder]: 166/1019 cut-off events. [2022-09-16 11:47:16,410 INFO L131 PetriNetUnfolder]: For 262/263 co-relation queries the response was YES. [2022-09-16 11:47:16,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1718 conditions, 1019 events. 166/1019 cut-off events. For 262/263 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7941 event pairs, 1 based on Foata normal form. 0/883 useless extension candidates. Maximal degree in co-relation 1446. Up to 160 conditions per place. [2022-09-16 11:47:16,417 INFO L137 encePairwiseOnDemand]: 209/219 looper letters, 33 selfloop transitions, 11 changer transitions 0/196 dead transitions. [2022-09-16 11:47:16,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 196 transitions, 657 flow [2022-09-16 11:47:16,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:47:16,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:47:16,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1450 transitions. [2022-09-16 11:47:16,419 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8276255707762558 [2022-09-16 11:47:16,420 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1450 transitions. [2022-09-16 11:47:16,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1450 transitions. [2022-09-16 11:47:16,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:16,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1450 transitions. [2022-09-16 11:47:16,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 181.25) internal successors, (1450), 8 states have internal predecessors, (1450), 0 states have call successors, (0), 0 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 11:47:16,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 219.0) internal successors, (1971), 9 states have internal predecessors, (1971), 0 states have call successors, (0), 0 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 11:47:16,425 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 219.0) internal successors, (1971), 9 states have internal predecessors, (1971), 0 states have call successors, (0), 0 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 11:47:16,425 INFO L175 Difference]: Start difference. First operand has 213 places, 186 transitions, 545 flow. Second operand 8 states and 1450 transitions. [2022-09-16 11:47:16,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 196 transitions, 657 flow [2022-09-16 11:47:16,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 196 transitions, 657 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:47:16,429 INFO L231 Difference]: Finished difference. Result has 222 places, 187 transitions, 581 flow [2022-09-16 11:47:16,430 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=581, PETRI_PLACES=222, PETRI_TRANSITIONS=187} [2022-09-16 11:47:16,430 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 47 predicate places. [2022-09-16 11:47:16,430 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 187 transitions, 581 flow [2022-09-16 11:47:16,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 178.125) internal successors, (1425), 8 states have internal predecessors, (1425), 0 states have call successors, (0), 0 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 11:47:16,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:16,431 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] [2022-09-16 11:47:16,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:47:16,431 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:47:16,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:16,431 INFO L85 PathProgramCache]: Analyzing trace with hash 710687670, now seen corresponding path program 1 times [2022-09-16 11:47:16,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:16,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442884917] [2022-09-16 11:47:16,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:16,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:16,480 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 11:47:16,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:16,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442884917] [2022-09-16 11:47:16,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442884917] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:16,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:16,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:16,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471118312] [2022-09-16 11:47:16,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:16,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:16,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:16,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:16,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:16,485 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 219 [2022-09-16 11:47:16,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 187 transitions, 581 flow. Second operand has 8 states, 8 states have (on average 178.25) internal successors, (1426), 8 states have internal predecessors, (1426), 0 states have call successors, (0), 0 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 11:47:16,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:16,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 219 [2022-09-16 11:47:16,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:16,645 INFO L130 PetriNetUnfolder]: 146/997 cut-off events. [2022-09-16 11:47:16,646 INFO L131 PetriNetUnfolder]: For 302/303 co-relation queries the response was YES. [2022-09-16 11:47:16,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1742 conditions, 997 events. 146/997 cut-off events. For 302/303 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7390 event pairs, 5 based on Foata normal form. 0/885 useless extension candidates. Maximal degree in co-relation 1464. Up to 149 conditions per place. [2022-09-16 11:47:16,655 INFO L137 encePairwiseOnDemand]: 209/219 looper letters, 35 selfloop transitions, 9 changer transitions 0/198 dead transitions. [2022-09-16 11:47:16,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 198 transitions, 697 flow [2022-09-16 11:47:16,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:47:16,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:47:16,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1452 transitions. [2022-09-16 11:47:16,658 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8287671232876712 [2022-09-16 11:47:16,658 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1452 transitions. [2022-09-16 11:47:16,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1452 transitions. [2022-09-16 11:47:16,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:16,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1452 transitions. [2022-09-16 11:47:16,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 181.5) internal successors, (1452), 8 states have internal predecessors, (1452), 0 states have call successors, (0), 0 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 11:47:16,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 219.0) internal successors, (1971), 9 states have internal predecessors, (1971), 0 states have call successors, (0), 0 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 11:47:16,663 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 219.0) internal successors, (1971), 9 states have internal predecessors, (1971), 0 states have call successors, (0), 0 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 11:47:16,663 INFO L175 Difference]: Start difference. First operand has 222 places, 187 transitions, 581 flow. Second operand 8 states and 1452 transitions. [2022-09-16 11:47:16,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 198 transitions, 697 flow [2022-09-16 11:47:16,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 198 transitions, 688 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:16,668 INFO L231 Difference]: Finished difference. Result has 227 places, 188 transitions, 602 flow [2022-09-16 11:47:16,669 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=602, PETRI_PLACES=227, PETRI_TRANSITIONS=188} [2022-09-16 11:47:16,669 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 52 predicate places. [2022-09-16 11:47:16,669 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 188 transitions, 602 flow [2022-09-16 11:47:16,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 178.25) internal successors, (1426), 8 states have internal predecessors, (1426), 0 states have call successors, (0), 0 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 11:47:16,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:16,670 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] [2022-09-16 11:47:16,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-16 11:47:16,670 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:47:16,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:16,670 INFO L85 PathProgramCache]: Analyzing trace with hash -155980486, now seen corresponding path program 1 times [2022-09-16 11:47:16,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:16,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428984409] [2022-09-16 11:47:16,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:16,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:16,719 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 11:47:16,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:16,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428984409] [2022-09-16 11:47:16,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428984409] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:16,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:16,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:16,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190758677] [2022-09-16 11:47:16,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:16,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:16,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:16,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:16,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:16,721 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 219 [2022-09-16 11:47:16,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 188 transitions, 602 flow. Second operand has 6 states, 6 states have (on average 177.5) internal successors, (1065), 6 states have internal predecessors, (1065), 0 states have call successors, (0), 0 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 11:47:16,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:16,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 219 [2022-09-16 11:47:16,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:16,874 INFO L130 PetriNetUnfolder]: 209/847 cut-off events. [2022-09-16 11:47:16,874 INFO L131 PetriNetUnfolder]: For 402/406 co-relation queries the response was YES. [2022-09-16 11:47:16,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1645 conditions, 847 events. 209/847 cut-off events. For 402/406 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 7450 event pairs, 116 based on Foata normal form. 5/686 useless extension candidates. Maximal degree in co-relation 1571. Up to 268 conditions per place. [2022-09-16 11:47:16,881 INFO L137 encePairwiseOnDemand]: 211/219 looper letters, 36 selfloop transitions, 7 changer transitions 4/197 dead transitions. [2022-09-16 11:47:16,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 197 transitions, 717 flow [2022-09-16 11:47:16,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:16,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1262 transitions. [2022-09-16 11:47:16,883 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8232224396607958 [2022-09-16 11:47:16,883 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1262 transitions. [2022-09-16 11:47:16,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1262 transitions. [2022-09-16 11:47:16,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:16,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1262 transitions. [2022-09-16 11:47:16,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 180.28571428571428) internal successors, (1262), 7 states have internal predecessors, (1262), 0 states have call successors, (0), 0 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 11:47:16,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 219.0) internal successors, (1752), 8 states have internal predecessors, (1752), 0 states have call successors, (0), 0 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 11:47:16,887 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 219.0) internal successors, (1752), 8 states have internal predecessors, (1752), 0 states have call successors, (0), 0 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 11:47:16,888 INFO L175 Difference]: Start difference. First operand has 227 places, 188 transitions, 602 flow. Second operand 7 states and 1262 transitions. [2022-09-16 11:47:16,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 197 transitions, 717 flow [2022-09-16 11:47:16,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 197 transitions, 705 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:47:16,892 INFO L231 Difference]: Finished difference. Result has 231 places, 191 transitions, 626 flow [2022-09-16 11:47:16,892 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=626, PETRI_PLACES=231, PETRI_TRANSITIONS=191} [2022-09-16 11:47:16,892 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 56 predicate places. [2022-09-16 11:47:16,892 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 191 transitions, 626 flow [2022-09-16 11:47:16,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.5) internal successors, (1065), 6 states have internal predecessors, (1065), 0 states have call successors, (0), 0 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 11:47:16,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:16,893 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] [2022-09-16 11:47:16,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-16 11:47:16,893 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:47:16,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:16,893 INFO L85 PathProgramCache]: Analyzing trace with hash 186603111, now seen corresponding path program 1 times [2022-09-16 11:47:16,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:16,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856468034] [2022-09-16 11:47:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:16,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:16,935 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 11:47:16,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:16,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856468034] [2022-09-16 11:47:16,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856468034] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:16,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:16,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:16,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842812549] [2022-09-16 11:47:16,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:16,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:16,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:16,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:16,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:16,937 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 219 [2022-09-16 11:47:16,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 191 transitions, 626 flow. Second operand has 6 states, 6 states have (on average 177.66666666666666) internal successors, (1066), 6 states have internal predecessors, (1066), 0 states have call successors, (0), 0 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 11:47:16,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:16,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 219 [2022-09-16 11:47:16,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:17,077 INFO L130 PetriNetUnfolder]: 197/830 cut-off events. [2022-09-16 11:47:17,077 INFO L131 PetriNetUnfolder]: For 410/414 co-relation queries the response was YES. [2022-09-16 11:47:17,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1729 conditions, 830 events. 197/830 cut-off events. For 410/414 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7119 event pairs, 92 based on Foata normal form. 5/703 useless extension candidates. Maximal degree in co-relation 1656. Up to 219 conditions per place. [2022-09-16 11:47:17,084 INFO L137 encePairwiseOnDemand]: 211/219 looper letters, 0 selfloop transitions, 0 changer transitions 206/206 dead transitions. [2022-09-16 11:47:17,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 206 transitions, 784 flow [2022-09-16 11:47:17,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:17,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:17,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1268 transitions. [2022-09-16 11:47:17,086 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.827136333985649 [2022-09-16 11:47:17,086 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1268 transitions. [2022-09-16 11:47:17,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1268 transitions. [2022-09-16 11:47:17,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:17,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1268 transitions. [2022-09-16 11:47:17,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 181.14285714285714) internal successors, (1268), 7 states have internal predecessors, (1268), 0 states have call successors, (0), 0 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 11:47:17,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 219.0) internal successors, (1752), 8 states have internal predecessors, (1752), 0 states have call successors, (0), 0 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 11:47:17,089 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 219.0) internal successors, (1752), 8 states have internal predecessors, (1752), 0 states have call successors, (0), 0 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 11:47:17,089 INFO L175 Difference]: Start difference. First operand has 231 places, 191 transitions, 626 flow. Second operand 7 states and 1268 transitions. [2022-09-16 11:47:17,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 206 transitions, 784 flow [2022-09-16 11:47:17,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 206 transitions, 782 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:17,093 INFO L231 Difference]: Finished difference. Result has 235 places, 0 transitions, 0 flow [2022-09-16 11:47:17,094 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=235, PETRI_TRANSITIONS=0} [2022-09-16 11:47:17,094 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 60 predicate places. [2022-09-16 11:47:17,094 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 0 transitions, 0 flow [2022-09-16 11:47:17,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.66666666666666) internal successors, (1066), 6 states have internal predecessors, (1066), 0 states have call successors, (0), 0 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 11:47:17,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 26 remaining) [2022-09-16 11:47:17,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2022-09-16 11:47:17,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2022-09-16 11:47:17,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2022-09-16 11:47:17,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2022-09-16 11:47:17,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2022-09-16 11:47:17,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2022-09-16 11:47:17,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2022-09-16 11:47:17,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2022-09-16 11:47:17,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 26 remaining) [2022-09-16 11:47:17,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2022-09-16 11:47:17,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2022-09-16 11:47:17,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 26 remaining) [2022-09-16 11:47:17,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2022-09-16 11:47:17,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2022-09-16 11:47:17,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2022-09-16 11:47:17,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2022-09-16 11:47:17,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2022-09-16 11:47:17,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2022-09-16 11:47:17,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2022-09-16 11:47:17,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2022-09-16 11:47:17,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2022-09-16 11:47:17,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2022-09-16 11:47:17,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2022-09-16 11:47:17,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2022-09-16 11:47:17,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2022-09-16 11:47:17,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-16 11:47:17,098 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:17,101 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:47:17,101 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:47:17,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:47:17 BasicIcfg [2022-09-16 11:47:17,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:47:17,105 INFO L158 Benchmark]: Toolchain (without parser) took 5079.30ms. Allocated memory was 179.3MB in the beginning and 277.9MB in the end (delta: 98.6MB). Free memory was 121.4MB in the beginning and 109.5MB in the end (delta: 11.9MB). Peak memory consumption was 111.7MB. Max. memory is 8.0GB. [2022-09-16 11:47:17,105 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 179.3MB. Free memory was 138.4MB in the beginning and 138.3MB in the end (delta: 75.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:47:17,105 INFO L158 Benchmark]: CACSL2BoogieTranslator took 250.35ms. Allocated memory is still 179.3MB. Free memory was 121.2MB in the beginning and 154.8MB in the end (delta: -33.6MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. [2022-09-16 11:47:17,105 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.84ms. Allocated memory is still 179.3MB. Free memory was 154.8MB in the beginning and 152.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:47:17,105 INFO L158 Benchmark]: Boogie Preprocessor took 29.55ms. Allocated memory is still 179.3MB. Free memory was 152.7MB in the beginning and 151.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 11:47:17,105 INFO L158 Benchmark]: RCFGBuilder took 443.51ms. Allocated memory is still 179.3MB. Free memory was 151.4MB in the beginning and 134.1MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-09-16 11:47:17,106 INFO L158 Benchmark]: TraceAbstraction took 4308.86ms. Allocated memory was 179.3MB in the beginning and 277.9MB in the end (delta: 98.6MB). Free memory was 133.6MB in the beginning and 109.5MB in the end (delta: 24.1MB). Peak memory consumption was 123.9MB. Max. memory is 8.0GB. [2022-09-16 11:47:17,106 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 179.3MB. Free memory was 138.4MB in the beginning and 138.3MB in the end (delta: 75.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 250.35ms. Allocated memory is still 179.3MB. Free memory was 121.2MB in the beginning and 154.8MB in the end (delta: -33.6MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.84ms. Allocated memory is still 179.3MB. Free memory was 154.8MB in the beginning and 152.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.55ms. Allocated memory is still 179.3MB. Free memory was 152.7MB in the beginning and 151.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 443.51ms. Allocated memory is still 179.3MB. Free memory was 151.4MB in the beginning and 134.1MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 4308.86ms. Allocated memory was 179.3MB in the beginning and 277.9MB in the end (delta: 98.6MB). Free memory was 133.6MB in the beginning and 109.5MB in the end (delta: 24.1MB). Peak memory consumption was 123.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 327 locations, 26 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.2s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 911 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 911 mSDsluCounter, 493 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 420 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1274 IncrementalHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 250 mSDtfsCounter, 1274 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=626occurred in iteration=17, InterpolantAutomatonStates: 110, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 1108 NumberOfCodeBlocks, 1108 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1090 ConstructedInterpolants, 0 QuantifiedInterpolants, 2388 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:47:17,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...