/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/04-mutex_36-trylock_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 04:41:02,420 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 04:41:02,507 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 04:41:02,511 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 04:41:02,511 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 04:41:02,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 04:41:02,534 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 04:41:02,534 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 04:41:02,535 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 04:41:02,535 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 04:41:02,535 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 04:41:02,536 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 04:41:02,536 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 04:41:02,536 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 04:41:02,537 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 04:41:02,537 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 04:41:02,537 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 04:41:02,537 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 04:41:02,538 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 04:41:02,538 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 04:41:02,538 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 04:41:02,542 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 04:41:02,542 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 04:41:02,542 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 04:41:02,542 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 04:41:02,543 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 04:41:02,543 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 04:41:02,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 04:41:02,543 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 04:41:02,544 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 04:41:02,544 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 04:41:02,544 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 04:41:02,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 04:41:02,545 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 04:41:02,545 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 04:41:02,545 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 04:41:02,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 04:41:02,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 04:41:02,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 04:41:02,852 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 04:41:02,852 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 04:41:02,853 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_36-trylock_nr.i [2023-08-27 04:41:04,118 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 04:41:04,479 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 04:41:04,480 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_36-trylock_nr.i [2023-08-27 04:41:04,503 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faa826bdc/c9eab7db26ea4504acbb43a84bbbe16f/FLAGb14627891 [2023-08-27 04:41:04,517 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faa826bdc/c9eab7db26ea4504acbb43a84bbbe16f [2023-08-27 04:41:04,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 04:41:04,520 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 04:41:04,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 04:41:04,524 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 04:41:04,526 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 04:41:04,528 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:41:04" (1/1) ... [2023-08-27 04:41:04,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e34a679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:04, skipping insertion in model container [2023-08-27 04:41:04,528 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:41:04" (1/1) ... [2023-08-27 04:41:04,595 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 04:41:05,128 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 04:41:05,139 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 04:41:05,168 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 04:41:05,170 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 04:41:05,176 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [739] [2023-08-27 04:41:05,210 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1798] [2023-08-27 04:41:05,238 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 04:41:05,378 WARN L669 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 04:41:05,378 WARN L669 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 04:41:05,379 WARN L669 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 04:41:05,379 WARN L669 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 04:41:05,385 INFO L206 MainTranslator]: Completed translation [2023-08-27 04:41:05,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:05 WrapperNode [2023-08-27 04:41:05,387 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 04:41:05,388 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 04:41:05,388 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 04:41:05,389 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 04:41:05,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:05" (1/1) ... [2023-08-27 04:41:05,439 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:05" (1/1) ... [2023-08-27 04:41:05,479 INFO L138 Inliner]: procedures = 524, calls = 69, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 133 [2023-08-27 04:41:05,480 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 04:41:05,481 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 04:41:05,481 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 04:41:05,481 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 04:41:05,489 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:05" (1/1) ... [2023-08-27 04:41:05,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:05" (1/1) ... [2023-08-27 04:41:05,504 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:05" (1/1) ... [2023-08-27 04:41:05,505 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:05" (1/1) ... [2023-08-27 04:41:05,521 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:05" (1/1) ... [2023-08-27 04:41:05,525 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:05" (1/1) ... [2023-08-27 04:41:05,539 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:05" (1/1) ... [2023-08-27 04:41:05,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:05" (1/1) ... [2023-08-27 04:41:05,550 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 04:41:05,558 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 04:41:05,558 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 04:41:05,558 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 04:41:05,559 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:05" (1/1) ... [2023-08-27 04:41:05,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 04:41:05,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:41:05,595 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) [2023-08-27 04:41:05,609 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 [2023-08-27 04:41:05,622 INFO L130 BoogieDeclarations]: Found specification of procedure counter_thread [2023-08-27 04:41:05,623 INFO L138 BoogieDeclarations]: Found implementation of procedure counter_thread [2023-08-27 04:41:05,623 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-08-27 04:41:05,623 INFO L130 BoogieDeclarations]: Found specification of procedure monitor_thread [2023-08-27 04:41:05,623 INFO L138 BoogieDeclarations]: Found implementation of procedure monitor_thread [2023-08-27 04:41:05,623 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-08-27 04:41:05,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 04:41:05,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 04:41:05,623 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 04:41:05,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 04:41:05,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 04:41:05,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 04:41:05,624 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-08-27 04:41:05,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 04:41:05,624 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-08-27 04:41:05,624 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-08-27 04:41:05,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 04:41:05,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 04:41:05,626 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 04:41:05,892 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 04:41:05,893 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 04:41:06,237 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 04:41:06,249 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 04:41:06,249 INFO L302 CfgBuilder]: Removed 19 assume(true) statements. [2023-08-27 04:41:06,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:41:06 BoogieIcfgContainer [2023-08-27 04:41:06,251 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 04:41:06,253 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 04:41:06,253 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 04:41:06,256 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 04:41:06,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:41:04" (1/3) ... [2023-08-27 04:41:06,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8123bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:41:06, skipping insertion in model container [2023-08-27 04:41:06,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:05" (2/3) ... [2023-08-27 04:41:06,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8123bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:41:06, skipping insertion in model container [2023-08-27 04:41:06,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:41:06" (3/3) ... [2023-08-27 04:41:06,262 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_36-trylock_nr.i [2023-08-27 04:41:06,278 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 04:41:06,278 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-27 04:41:06,278 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 04:41:06,373 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 04:41:06,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 250 transitions, 516 flow [2023-08-27 04:41:06,506 INFO L124 PetriNetUnfolderBase]: 32/248 cut-off events. [2023-08-27 04:41:06,506 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 04:41:06,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 248 events. 32/248 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 559 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 150. Up to 5 conditions per place. [2023-08-27 04:41:06,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 250 transitions, 516 flow [2023-08-27 04:41:06,524 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 221 transitions, 451 flow [2023-08-27 04:41:06,527 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 04:41:06,545 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 221 transitions, 451 flow [2023-08-27 04:41:06,548 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 221 transitions, 451 flow [2023-08-27 04:41:06,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 221 transitions, 451 flow [2023-08-27 04:41:06,593 INFO L124 PetriNetUnfolderBase]: 28/221 cut-off events. [2023-08-27 04:41:06,593 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 04:41:06,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 221 events. 28/221 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 500 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 150. Up to 5 conditions per place. [2023-08-27 04:41:06,601 INFO L119 LiptonReduction]: Number of co-enabled transitions 13862 [2023-08-27 04:41:17,635 INFO L134 LiptonReduction]: Checked pairs total: 14838 [2023-08-27 04:41:17,635 INFO L136 LiptonReduction]: Total number of compositions: 247 [2023-08-27 04:41:17,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 04:41:17,652 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;@46fb6146, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 04:41:17,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-27 04:41:17,654 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 04:41:17,654 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-27 04:41:17,654 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:41:17,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:41:17,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-27 04:41:17,655 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 04:41:17,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:41:17,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1025, now seen corresponding path program 1 times [2023-08-27 04:41:17,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:41:17,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206122861] [2023-08-27 04:41:17,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:17,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:41:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:17,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:17,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:41:17,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206122861] [2023-08-27 04:41:17,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206122861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:41:17,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:41:17,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-27 04:41:17,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908620333] [2023-08-27 04:41:17,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:41:17,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-27 04:41:17,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:41:17,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-27 04:41:17,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-27 04:41:17,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 497 [2023-08-27 04:41:17,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 50 transitions, 109 flow. Second operand has 2 states, 2 states have (on average 219.5) internal successors, (439), 2 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:17,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:41:17,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 497 [2023-08-27 04:41:17,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:41:18,057 INFO L124 PetriNetUnfolderBase]: 328/595 cut-off events. [2023-08-27 04:41:18,057 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-27 04:41:18,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1133 conditions, 595 events. 328/595 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 2837 event pairs, 234 based on Foata normal form. 79/340 useless extension candidates. Maximal degree in co-relation 1056. Up to 512 conditions per place. [2023-08-27 04:41:18,064 INFO L140 encePairwiseOnDemand]: 484/497 looper letters, 25 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-08-27 04:41:18,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 117 flow [2023-08-27 04:41:18,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-27 04:41:18,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-27 04:41:18,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 476 transitions. [2023-08-27 04:41:18,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4788732394366197 [2023-08-27 04:41:18,083 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 476 transitions. [2023-08-27 04:41:18,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 476 transitions. [2023-08-27 04:41:18,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:41:18,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 476 transitions. [2023-08-27 04:41:18,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 238.0) internal successors, (476), 2 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:18,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 497.0) internal successors, (1491), 3 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:18,099 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 497.0) internal successors, (1491), 3 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:18,101 INFO L175 Difference]: Start difference. First operand has 39 places, 50 transitions, 109 flow. Second operand 2 states and 476 transitions. [2023-08-27 04:41:18,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 117 flow [2023-08-27 04:41:18,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 04:41:18,106 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 62 flow [2023-08-27 04:41:18,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2023-08-27 04:41:18,113 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-08-27 04:41:18,114 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 62 flow [2023-08-27 04:41:18,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 219.5) internal successors, (439), 2 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:18,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:41:18,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 04:41:18,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 04:41:18,116 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 04:41:18,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:41:18,118 INFO L85 PathProgramCache]: Analyzing trace with hash 968796351, now seen corresponding path program 1 times [2023-08-27 04:41:18,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:41:18,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648271688] [2023-08-27 04:41:18,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:18,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:41:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:18,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:41:18,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648271688] [2023-08-27 04:41:18,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648271688] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:41:18,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:41:18,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 04:41:18,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716340736] [2023-08-27 04:41:18,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:41:18,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:41:18,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:41:18,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:41:18,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:41:18,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 497 [2023-08-27 04:41:18,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:18,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:41:18,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 497 [2023-08-27 04:41:18,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:41:18,494 INFO L124 PetriNetUnfolderBase]: 711/1088 cut-off events. [2023-08-27 04:41:18,494 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-27 04:41:18,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2200 conditions, 1088 events. 711/1088 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4541 event pairs, 195 based on Foata normal form. 0/496 useless extension candidates. Maximal degree in co-relation 2197. Up to 725 conditions per place. [2023-08-27 04:41:18,498 INFO L140 encePairwiseOnDemand]: 490/497 looper letters, 48 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2023-08-27 04:41:18,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 51 transitions, 211 flow [2023-08-27 04:41:18,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:41:18,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:41:18,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 691 transitions. [2023-08-27 04:41:18,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46344735077129445 [2023-08-27 04:41:18,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 691 transitions. [2023-08-27 04:41:18,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 691 transitions. [2023-08-27 04:41:18,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:41:18,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 691 transitions. [2023-08-27 04:41:18,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:18,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:18,507 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:18,507 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 62 flow. Second operand 3 states and 691 transitions. [2023-08-27 04:41:18,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 51 transitions, 211 flow [2023-08-27 04:41:18,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 51 transitions, 211 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 04:41:18,509 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 87 flow [2023-08-27 04:41:18,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-08-27 04:41:18,510 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -6 predicate places. [2023-08-27 04:41:18,510 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 87 flow [2023-08-27 04:41:18,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:18,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:41:18,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 04:41:18,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 04:41:18,511 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting counter_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 04:41:18,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:41:18,511 INFO L85 PathProgramCache]: Analyzing trace with hash -32081301, now seen corresponding path program 1 times [2023-08-27 04:41:18,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:41:18,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678959234] [2023-08-27 04:41:18,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:18,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:41:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:18,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:18,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:41:18,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678959234] [2023-08-27 04:41:18,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678959234] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:41:18,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:41:18,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 04:41:18,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528873334] [2023-08-27 04:41:18,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:41:18,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:41:18,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:41:18,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:41:18,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:41:18,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 497 [2023-08-27 04:41:18,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:18,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:41:18,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 497 [2023-08-27 04:41:18,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:41:18,726 INFO L124 PetriNetUnfolderBase]: 566/909 cut-off events. [2023-08-27 04:41:18,726 INFO L125 PetriNetUnfolderBase]: For 11/20 co-relation queries the response was YES. [2023-08-27 04:41:18,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1967 conditions, 909 events. 566/909 cut-off events. For 11/20 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4121 event pairs, 106 based on Foata normal form. 0/487 useless extension candidates. Maximal degree in co-relation 1962. Up to 670 conditions per place. [2023-08-27 04:41:18,730 INFO L140 encePairwiseOnDemand]: 495/497 looper letters, 41 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-08-27 04:41:18,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 46 transitions, 199 flow [2023-08-27 04:41:18,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:41:18,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:41:18,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 681 transitions. [2023-08-27 04:41:18,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567404426559356 [2023-08-27 04:41:18,732 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 681 transitions. [2023-08-27 04:41:18,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 681 transitions. [2023-08-27 04:41:18,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:41:18,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 681 transitions. [2023-08-27 04:41:18,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:18,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:18,738 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:18,738 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 87 flow. Second operand 3 states and 681 transitions. [2023-08-27 04:41:18,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 46 transitions, 199 flow [2023-08-27 04:41:18,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 46 transitions, 197 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:41:18,741 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 83 flow [2023-08-27 04:41:18,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2023-08-27 04:41:18,742 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-08-27 04:41:18,745 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 83 flow [2023-08-27 04:41:18,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:18,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:41:18,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 04:41:18,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 04:41:18,746 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 04:41:18,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:41:18,747 INFO L85 PathProgramCache]: Analyzing trace with hash -29932719, now seen corresponding path program 1 times [2023-08-27 04:41:18,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:41:18,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916956562] [2023-08-27 04:41:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:18,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:41:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:18,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:41:18,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916956562] [2023-08-27 04:41:18,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916956562] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:41:18,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:41:18,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 04:41:18,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693527534] [2023-08-27 04:41:18,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:41:18,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:41:18,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:41:18,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:41:18,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:41:18,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 497 [2023-08-27 04:41:18,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:18,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:41:18,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 497 [2023-08-27 04:41:18,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:41:19,033 INFO L124 PetriNetUnfolderBase]: 891/1562 cut-off events. [2023-08-27 04:41:19,034 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2023-08-27 04:41:19,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3333 conditions, 1562 events. 891/1562 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 8839 event pairs, 410 based on Foata normal form. 0/1019 useless extension candidates. Maximal degree in co-relation 3328. Up to 874 conditions per place. [2023-08-27 04:41:19,041 INFO L140 encePairwiseOnDemand]: 493/497 looper letters, 42 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-27 04:41:19,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 48 transitions, 221 flow [2023-08-27 04:41:19,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:41:19,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:41:19,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 690 transitions. [2023-08-27 04:41:19,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46277665995975853 [2023-08-27 04:41:19,043 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 690 transitions. [2023-08-27 04:41:19,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 690 transitions. [2023-08-27 04:41:19,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:41:19,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 690 transitions. [2023-08-27 04:41:19,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:19,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:19,049 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:19,049 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 83 flow. Second operand 3 states and 690 transitions. [2023-08-27 04:41:19,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 48 transitions, 221 flow [2023-08-27 04:41:19,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 48 transitions, 221 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 04:41:19,051 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 97 flow [2023-08-27 04:41:19,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2023-08-27 04:41:19,052 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2023-08-27 04:41:19,052 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 97 flow [2023-08-27 04:41:19,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:19,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:41:19,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 04:41:19,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 04:41:19,053 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 04:41:19,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:41:19,054 INFO L85 PathProgramCache]: Analyzing trace with hash -32081364, now seen corresponding path program 1 times [2023-08-27 04:41:19,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:41:19,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890766596] [2023-08-27 04:41:19,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:19,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:41:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:19,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:19,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:41:19,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890766596] [2023-08-27 04:41:19,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890766596] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:41:19,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905621962] [2023-08-27 04:41:19,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:19,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:41:19,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:41:19,137 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:41:19,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 04:41:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:19,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 04:41:19,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:41:19,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:19,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:41:19,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:19,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905621962] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:41:19,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:41:19,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 04:41:19,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405427794] [2023-08-27 04:41:19,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:41:19,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 04:41:19,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:41:19,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 04:41:19,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 04:41:19,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 497 [2023-08-27 04:41:19,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 97 flow. Second operand has 7 states, 7 states have (on average 214.42857142857142) internal successors, (1501), 7 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:19,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:41:19,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 497 [2023-08-27 04:41:19,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:41:19,834 INFO L124 PetriNetUnfolderBase]: 2543/3846 cut-off events. [2023-08-27 04:41:19,834 INFO L125 PetriNetUnfolderBase]: For 632/632 co-relation queries the response was YES. [2023-08-27 04:41:19,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9237 conditions, 3846 events. 2543/3846 cut-off events. For 632/632 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 19239 event pairs, 481 based on Foata normal form. 72/2832 useless extension candidates. Maximal degree in co-relation 9230. Up to 922 conditions per place. [2023-08-27 04:41:19,854 INFO L140 encePairwiseOnDemand]: 491/497 looper letters, 134 selfloop transitions, 14 changer transitions 0/148 dead transitions. [2023-08-27 04:41:19,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 148 transitions, 736 flow [2023-08-27 04:41:19,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 04:41:19,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 04:41:19,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1633 transitions. [2023-08-27 04:41:19,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2023-08-27 04:41:19,858 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1633 transitions. [2023-08-27 04:41:19,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1633 transitions. [2023-08-27 04:41:19,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:41:19,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1633 transitions. [2023-08-27 04:41:19,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 233.28571428571428) internal successors, (1633), 7 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:19,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 497.0) internal successors, (3976), 8 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:19,870 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 497.0) internal successors, (3976), 8 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:19,870 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 97 flow. Second operand 7 states and 1633 transitions. [2023-08-27 04:41:19,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 148 transitions, 736 flow [2023-08-27 04:41:19,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 148 transitions, 724 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:41:19,874 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 215 flow [2023-08-27 04:41:19,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=215, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-27 04:41:19,875 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2023-08-27 04:41:19,875 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 215 flow [2023-08-27 04:41:19,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 214.42857142857142) internal successors, (1501), 7 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:19,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:41:19,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 04:41:19,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 04:41:20,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:41:20,082 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 04:41:20,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:41:20,083 INFO L85 PathProgramCache]: Analyzing trace with hash -32081365, now seen corresponding path program 1 times [2023-08-27 04:41:20,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:41:20,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461981365] [2023-08-27 04:41:20,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:20,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:41:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:20,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:20,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:41:20,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461981365] [2023-08-27 04:41:20,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461981365] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:41:20,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219862941] [2023-08-27 04:41:20,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:20,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:41:20,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:41:20,161 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:41:20,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 04:41:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:20,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 04:41:20,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:41:20,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:20,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 04:41:20,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219862941] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:41:20,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 04:41:20,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 04:41:20,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299671572] [2023-08-27 04:41:20,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:41:20,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 04:41:20,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:41:20,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 04:41:20,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 04:41:20,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 497 [2023-08-27 04:41:20,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 215 flow. Second operand has 4 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:20,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:41:20,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 497 [2023-08-27 04:41:20,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:41:20,594 INFO L124 PetriNetUnfolderBase]: 2091/3212 cut-off events. [2023-08-27 04:41:20,594 INFO L125 PetriNetUnfolderBase]: For 1423/1423 co-relation queries the response was YES. [2023-08-27 04:41:20,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8209 conditions, 3212 events. 2091/3212 cut-off events. For 1423/1423 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 16080 event pairs, 481 based on Foata normal form. 292/2778 useless extension candidates. Maximal degree in co-relation 8198. Up to 2290 conditions per place. [2023-08-27 04:41:20,613 INFO L140 encePairwiseOnDemand]: 493/497 looper letters, 51 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-27 04:41:20,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 296 flow [2023-08-27 04:41:20,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 04:41:20,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 04:41:20,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 897 transitions. [2023-08-27 04:41:20,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512072434607646 [2023-08-27 04:41:20,616 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 897 transitions. [2023-08-27 04:41:20,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 897 transitions. [2023-08-27 04:41:20,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:41:20,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 897 transitions. [2023-08-27 04:41:20,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 224.25) internal successors, (897), 4 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:20,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:20,622 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:20,622 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 215 flow. Second operand 4 states and 897 transitions. [2023-08-27 04:41:20,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 296 flow [2023-08-27 04:41:20,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 284 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-27 04:41:20,635 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 125 flow [2023-08-27 04:41:20,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=125, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2023-08-27 04:41:20,636 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2023-08-27 04:41:20,636 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 125 flow [2023-08-27 04:41:20,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:20,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:41:20,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:41:20,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 04:41:20,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-27 04:41:20,842 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 04:41:20,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:41:20,842 INFO L85 PathProgramCache]: Analyzing trace with hash -927912851, now seen corresponding path program 1 times [2023-08-27 04:41:20,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:41:20,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246872989] [2023-08-27 04:41:20,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:20,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:41:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:20,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:20,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:41:20,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246872989] [2023-08-27 04:41:20,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246872989] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:41:20,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198523364] [2023-08-27 04:41:20,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:20,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:41:20,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:41:20,920 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:41:20,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 04:41:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:21,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 04:41:21,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:41:21,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:21,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:41:21,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:21,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198523364] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:41:21,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:41:21,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 04:41:21,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102072412] [2023-08-27 04:41:21,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:41:21,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 04:41:21,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:41:21,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 04:41:21,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 04:41:21,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 497 [2023-08-27 04:41:21,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 125 flow. Second operand has 7 states, 7 states have (on average 217.71428571428572) internal successors, (1524), 7 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:21,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:41:21,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 497 [2023-08-27 04:41:21,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:41:21,613 INFO L124 PetriNetUnfolderBase]: 3461/5866 cut-off events. [2023-08-27 04:41:21,613 INFO L125 PetriNetUnfolderBase]: For 2829/2829 co-relation queries the response was YES. [2023-08-27 04:41:21,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13737 conditions, 5866 events. 3461/5866 cut-off events. For 2829/2829 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 38485 event pairs, 613 based on Foata normal form. 0/4375 useless extension candidates. Maximal degree in co-relation 13726. Up to 1353 conditions per place. [2023-08-27 04:41:21,658 INFO L140 encePairwiseOnDemand]: 493/497 looper letters, 117 selfloop transitions, 9 changer transitions 0/129 dead transitions. [2023-08-27 04:41:21,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 129 transitions, 758 flow [2023-08-27 04:41:21,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 04:41:21,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 04:41:21,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1611 transitions. [2023-08-27 04:41:21,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630640988789882 [2023-08-27 04:41:21,662 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1611 transitions. [2023-08-27 04:41:21,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1611 transitions. [2023-08-27 04:41:21,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:41:21,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1611 transitions. [2023-08-27 04:41:21,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 230.14285714285714) internal successors, (1611), 7 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:21,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 497.0) internal successors, (3976), 8 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:21,673 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 497.0) internal successors, (3976), 8 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:21,673 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 125 flow. Second operand 7 states and 1611 transitions. [2023-08-27 04:41:21,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 129 transitions, 758 flow [2023-08-27 04:41:21,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 129 transitions, 750 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 04:41:21,679 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 181 flow [2023-08-27 04:41:21,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=181, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2023-08-27 04:41:21,680 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2023-08-27 04:41:21,680 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 181 flow [2023-08-27 04:41:21,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 217.71428571428572) internal successors, (1524), 7 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:21,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:41:21,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:41:21,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 04:41:21,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:41:21,887 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 04:41:21,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:41:21,887 INFO L85 PathProgramCache]: Analyzing trace with hash -927912853, now seen corresponding path program 1 times [2023-08-27 04:41:21,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:41:21,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75403683] [2023-08-27 04:41:21,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:21,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:41:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:21,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:41:21,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75403683] [2023-08-27 04:41:21,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75403683] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:41:21,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740446252] [2023-08-27 04:41:21,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:21,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:41:21,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:41:21,970 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:41:21,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 04:41:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:22,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 04:41:22,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:41:22,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:22,096 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 04:41:22,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740446252] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:41:22,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 04:41:22,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 04:41:22,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820249933] [2023-08-27 04:41:22,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:41:22,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 04:41:22,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:41:22,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 04:41:22,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 04:41:22,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 497 [2023-08-27 04:41:22,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 217.75) internal successors, (871), 4 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:22,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:41:22,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 497 [2023-08-27 04:41:22,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:41:22,530 INFO L124 PetriNetUnfolderBase]: 3132/5468 cut-off events. [2023-08-27 04:41:22,531 INFO L125 PetriNetUnfolderBase]: For 2736/2736 co-relation queries the response was YES. [2023-08-27 04:41:22,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13429 conditions, 5468 events. 3132/5468 cut-off events. For 2736/2736 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 36950 event pairs, 90 based on Foata normal form. 138/4479 useless extension candidates. Maximal degree in co-relation 13415. Up to 3616 conditions per place. [2023-08-27 04:41:22,561 INFO L140 encePairwiseOnDemand]: 494/497 looper letters, 63 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-27 04:41:22,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 68 transitions, 420 flow [2023-08-27 04:41:22,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 04:41:22,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 04:41:22,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 912 transitions. [2023-08-27 04:41:22,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45875251509054327 [2023-08-27 04:41:22,564 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 912 transitions. [2023-08-27 04:41:22,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 912 transitions. [2023-08-27 04:41:22,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:41:22,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 912 transitions. [2023-08-27 04:41:22,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:22,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:22,607 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:22,607 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 181 flow. Second operand 4 states and 912 transitions. [2023-08-27 04:41:22,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 68 transitions, 420 flow [2023-08-27 04:41:22,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 412 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 04:41:22,616 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 150 flow [2023-08-27 04:41:22,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2023-08-27 04:41:22,616 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2023-08-27 04:41:22,616 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 150 flow [2023-08-27 04:41:22,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 217.75) internal successors, (871), 4 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:22,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:41:22,617 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-27 04:41:22,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 04:41:22,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:41:22,818 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 04:41:22,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:41:22,818 INFO L85 PathProgramCache]: Analyzing trace with hash 2044599295, now seen corresponding path program 2 times [2023-08-27 04:41:22,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:41:22,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655275002] [2023-08-27 04:41:22,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:22,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:41:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:22,940 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:22,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:41:22,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655275002] [2023-08-27 04:41:22,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655275002] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:41:22,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222497473] [2023-08-27 04:41:22,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 04:41:22,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:41:22,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:41:22,942 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:41:22,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 04:41:23,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 04:41:23,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 04:41:23,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 04:41:23,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:41:23,088 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:23,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:41:23,145 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:23,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222497473] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:41:23,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:41:23,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 04:41:23,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49001024] [2023-08-27 04:41:23,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:41:23,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 04:41:23,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:41:23,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 04:41:23,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 04:41:23,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 497 [2023-08-27 04:41:23,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 150 flow. Second operand has 13 states, 13 states have (on average 213.76923076923077) internal successors, (2779), 13 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:23,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:41:23,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 497 [2023-08-27 04:41:23,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:41:24,513 INFO L124 PetriNetUnfolderBase]: 8689/13191 cut-off events. [2023-08-27 04:41:24,513 INFO L125 PetriNetUnfolderBase]: For 10021/10021 co-relation queries the response was YES. [2023-08-27 04:41:24,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33113 conditions, 13191 events. 8689/13191 cut-off events. For 10021/10021 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 76864 event pairs, 1041 based on Foata normal form. 924/11524 useless extension candidates. Maximal degree in co-relation 33098. Up to 2307 conditions per place. [2023-08-27 04:41:24,575 INFO L140 encePairwiseOnDemand]: 493/497 looper letters, 259 selfloop transitions, 11 changer transitions 0/270 dead transitions. [2023-08-27 04:41:24,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 270 transitions, 1576 flow [2023-08-27 04:41:24,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 04:41:24,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 04:41:24,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2781 transitions. [2023-08-27 04:41:24,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662977867203219 [2023-08-27 04:41:24,583 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2781 transitions. [2023-08-27 04:41:24,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2781 transitions. [2023-08-27 04:41:24,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:41:24,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2781 transitions. [2023-08-27 04:41:24,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 231.75) internal successors, (2781), 12 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:24,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 497.0) internal successors, (6461), 13 states have internal predecessors, (6461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:24,599 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 497.0) internal successors, (6461), 13 states have internal predecessors, (6461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:24,599 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 150 flow. Second operand 12 states and 2781 transitions. [2023-08-27 04:41:24,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 270 transitions, 1576 flow [2023-08-27 04:41:24,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 270 transitions, 1543 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 04:41:24,615 INFO L231 Difference]: Finished difference. Result has 66 places, 40 transitions, 243 flow [2023-08-27 04:41:24,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=243, PETRI_PLACES=66, PETRI_TRANSITIONS=40} [2023-08-27 04:41:24,616 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 27 predicate places. [2023-08-27 04:41:24,616 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 40 transitions, 243 flow [2023-08-27 04:41:24,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 213.76923076923077) internal successors, (2779), 13 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:24,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:41:24,618 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-27 04:41:24,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 04:41:24,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:41:24,830 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 04:41:24,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:41:24,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1040860717, now seen corresponding path program 2 times [2023-08-27 04:41:24,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:41:24,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632571504] [2023-08-27 04:41:24,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:24,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:41:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:24,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:41:24,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632571504] [2023-08-27 04:41:24,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632571504] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:41:24,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296964011] [2023-08-27 04:41:24,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 04:41:24,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:41:24,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:41:24,949 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:41:24,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 04:41:25,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 04:41:25,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 04:41:25,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 04:41:25,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:41:25,096 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:25,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:41:25,156 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:25,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296964011] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:41:25,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:41:25,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 04:41:25,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879406935] [2023-08-27 04:41:25,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:41:25,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 04:41:25,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:41:25,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 04:41:25,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 04:41:25,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 497 [2023-08-27 04:41:25,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 40 transitions, 243 flow. Second operand has 13 states, 13 states have (on average 217.3846153846154) internal successors, (2826), 13 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:25,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:41:25,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 497 [2023-08-27 04:41:25,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:41:27,222 INFO L124 PetriNetUnfolderBase]: 12828/22274 cut-off events. [2023-08-27 04:41:27,222 INFO L125 PetriNetUnfolderBase]: For 32740/32740 co-relation queries the response was YES. [2023-08-27 04:41:27,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56154 conditions, 22274 events. 12828/22274 cut-off events. For 32740/32740 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 172441 event pairs, 1213 based on Foata normal form. 810/18375 useless extension candidates. Maximal degree in co-relation 56133. Up to 3276 conditions per place. [2023-08-27 04:41:27,367 INFO L140 encePairwiseOnDemand]: 494/497 looper letters, 282 selfloop transitions, 11 changer transitions 0/296 dead transitions. [2023-08-27 04:41:27,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 296 transitions, 2405 flow [2023-08-27 04:41:27,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 04:41:27,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 04:41:27,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2770 transitions. [2023-08-27 04:41:27,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4644533869885983 [2023-08-27 04:41:27,375 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2770 transitions. [2023-08-27 04:41:27,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2770 transitions. [2023-08-27 04:41:27,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:41:27,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2770 transitions. [2023-08-27 04:41:27,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 230.83333333333334) internal successors, (2770), 12 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:27,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 497.0) internal successors, (6461), 13 states have internal predecessors, (6461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:27,392 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 497.0) internal successors, (6461), 13 states have internal predecessors, (6461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:27,392 INFO L175 Difference]: Start difference. First operand has 66 places, 40 transitions, 243 flow. Second operand 12 states and 2770 transitions. [2023-08-27 04:41:27,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 296 transitions, 2405 flow [2023-08-27 04:41:27,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 296 transitions, 2029 flow, removed 143 selfloop flow, removed 5 redundant places. [2023-08-27 04:41:27,430 INFO L231 Difference]: Finished difference. Result has 78 places, 46 transitions, 291 flow [2023-08-27 04:41:27,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=291, PETRI_PLACES=78, PETRI_TRANSITIONS=46} [2023-08-27 04:41:27,431 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 39 predicate places. [2023-08-27 04:41:27,431 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 46 transitions, 291 flow [2023-08-27 04:41:27,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 217.3846153846154) internal successors, (2826), 13 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:27,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:41:27,432 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1] [2023-08-27 04:41:27,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-27 04:41:27,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:41:27,639 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 04:41:27,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:41:27,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1915454241, now seen corresponding path program 3 times [2023-08-27 04:41:27,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:41:27,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275830353] [2023-08-27 04:41:27,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:27,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:41:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:27,891 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:27,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:41:27,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275830353] [2023-08-27 04:41:27,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275830353] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:41:27,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272863288] [2023-08-27 04:41:27,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 04:41:27,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:41:27,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:41:27,893 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:41:27,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 04:41:28,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-27 04:41:28,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 04:41:28,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 04:41:28,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:41:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:28,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:41:28,372 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:28,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272863288] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:41:28,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:41:28,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-08-27 04:41:28,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052138322] [2023-08-27 04:41:28,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:41:28,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 04:41:28,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:41:28,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 04:41:28,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-27 04:41:28,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 497 [2023-08-27 04:41:28,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 46 transitions, 291 flow. Second operand has 25 states, 25 states have (on average 213.4) internal successors, (5335), 25 states have internal predecessors, (5335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:28,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:41:28,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 497 [2023-08-27 04:41:28,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:41:33,172 INFO L124 PetriNetUnfolderBase]: 36277/54807 cut-off events. [2023-08-27 04:41:33,173 INFO L125 PetriNetUnfolderBase]: For 217272/217272 co-relation queries the response was YES. [2023-08-27 04:41:33,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142616 conditions, 54807 events. 36277/54807 cut-off events. For 217272/217272 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 361447 event pairs, 2223 based on Foata normal form. 3936/47788 useless extension candidates. Maximal degree in co-relation 142589. Up to 9795 conditions per place. [2023-08-27 04:41:33,702 INFO L140 encePairwiseOnDemand]: 493/497 looper letters, 673 selfloop transitions, 23 changer transitions 0/696 dead transitions. [2023-08-27 04:41:33,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 696 transitions, 5407 flow [2023-08-27 04:41:33,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 04:41:33,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 04:41:33,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5577 transitions. [2023-08-27 04:41:33,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675553319919517 [2023-08-27 04:41:33,715 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5577 transitions. [2023-08-27 04:41:33,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5577 transitions. [2023-08-27 04:41:33,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:41:33,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5577 transitions. [2023-08-27 04:41:33,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 232.375) internal successors, (5577), 24 states have internal predecessors, (5577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:33,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 497.0) internal successors, (12425), 25 states have internal predecessors, (12425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:33,743 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 497.0) internal successors, (12425), 25 states have internal predecessors, (12425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:33,744 INFO L175 Difference]: Start difference. First operand has 78 places, 46 transitions, 291 flow. Second operand 24 states and 5577 transitions. [2023-08-27 04:41:33,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 696 transitions, 5407 flow [2023-08-27 04:41:33,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 696 transitions, 4579 flow, removed 299 selfloop flow, removed 5 redundant places. [2023-08-27 04:41:33,888 INFO L231 Difference]: Finished difference. Result has 108 places, 58 transitions, 447 flow [2023-08-27 04:41:33,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=447, PETRI_PLACES=108, PETRI_TRANSITIONS=58} [2023-08-27 04:41:33,888 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 69 predicate places. [2023-08-27 04:41:33,889 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 58 transitions, 447 flow [2023-08-27 04:41:33,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 213.4) internal successors, (5335), 25 states have internal predecessors, (5335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:33,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:41:33,890 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2023-08-27 04:41:33,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 04:41:34,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:41:34,096 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 04:41:34,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:41:34,096 INFO L85 PathProgramCache]: Analyzing trace with hash 723178387, now seen corresponding path program 3 times [2023-08-27 04:41:34,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:41:34,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479613054] [2023-08-27 04:41:34,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:34,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:41:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:34,328 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:34,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:41:34,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479613054] [2023-08-27 04:41:34,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479613054] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:41:34,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400196677] [2023-08-27 04:41:34,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 04:41:34,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:41:34,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:41:34,329 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:41:34,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 04:41:34,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-27 04:41:34,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 04:41:34,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 04:41:34,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:41:34,520 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:34,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:41:34,736 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:34,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400196677] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:41:34,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:41:34,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-27 04:41:34,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011160342] [2023-08-27 04:41:34,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:41:34,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 04:41:34,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:41:34,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 04:41:34,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-27 04:41:34,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 497 [2023-08-27 04:41:34,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 58 transitions, 447 flow. Second operand has 25 states, 25 states have (on average 217.2) internal successors, (5430), 25 states have internal predecessors, (5430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:34,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:41:34,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 497 [2023-08-27 04:41:34,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:41:43,369 INFO L124 PetriNetUnfolderBase]: 51876/89798 cut-off events. [2023-08-27 04:41:43,370 INFO L125 PetriNetUnfolderBase]: For 337063/337063 co-relation queries the response was YES. [2023-08-27 04:41:43,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228240 conditions, 89798 events. 51876/89798 cut-off events. For 337063/337063 co-relation queries the response was YES. Maximal size of possible extension queue 1499. Compared 773745 event pairs, 2413 based on Foata normal form. 3204/73785 useless extension candidates. Maximal degree in co-relation 228201. Up to 13464 conditions per place. [2023-08-27 04:41:44,161 INFO L140 encePairwiseOnDemand]: 494/497 looper letters, 858 selfloop transitions, 23 changer transitions 0/884 dead transitions. [2023-08-27 04:41:44,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 884 transitions, 8573 flow [2023-08-27 04:41:44,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 04:41:44,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 04:41:44,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5548 transitions. [2023-08-27 04:41:44,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46512407780013415 [2023-08-27 04:41:44,179 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5548 transitions. [2023-08-27 04:41:44,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5548 transitions. [2023-08-27 04:41:44,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:41:44,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5548 transitions. [2023-08-27 04:41:44,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 231.16666666666666) internal successors, (5548), 24 states have internal predecessors, (5548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:44,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 497.0) internal successors, (12425), 25 states have internal predecessors, (12425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:44,409 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 497.0) internal successors, (12425), 25 states have internal predecessors, (12425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:44,410 INFO L175 Difference]: Start difference. First operand has 108 places, 58 transitions, 447 flow. Second operand 24 states and 5548 transitions. [2023-08-27 04:41:44,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 884 transitions, 8573 flow [2023-08-27 04:41:44,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 884 transitions, 6961 flow, removed 575 selfloop flow, removed 11 redundant places. [2023-08-27 04:41:44,684 INFO L231 Difference]: Finished difference. Result has 132 places, 70 transitions, 543 flow [2023-08-27 04:41:44,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=543, PETRI_PLACES=132, PETRI_TRANSITIONS=70} [2023-08-27 04:41:44,685 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 93 predicate places. [2023-08-27 04:41:44,685 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 70 transitions, 543 flow [2023-08-27 04:41:44,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 217.2) internal successors, (5430), 25 states have internal predecessors, (5430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:44,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:41:44,687 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1] [2023-08-27 04:41:44,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 04:41:44,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-27 04:41:44,892 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 04:41:44,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:41:44,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1727871329, now seen corresponding path program 4 times [2023-08-27 04:41:44,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:41:44,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860402883] [2023-08-27 04:41:44,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:44,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:41:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:45,487 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:45,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:41:45,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860402883] [2023-08-27 04:41:45,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860402883] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:41:45,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014166225] [2023-08-27 04:41:45,487 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 04:41:45,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:41:45,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:41:45,488 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:41:45,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 04:41:45,621 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 04:41:45,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 04:41:45,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 04:41:45,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:41:45,682 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:45,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:41:46,362 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:46,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014166225] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:41:46,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:41:46,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2023-08-27 04:41:46,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647353871] [2023-08-27 04:41:46,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:41:46,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-27 04:41:46,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:41:46,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-27 04:41:46,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-27 04:41:46,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 497 [2023-08-27 04:41:46,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 70 transitions, 543 flow. Second operand has 49 states, 49 states have (on average 213.20408163265307) internal successors, (10447), 49 states have internal predecessors, (10447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:41:46,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:41:46,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 497 [2023-08-27 04:41:46,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:42:13,045 INFO L124 PetriNetUnfolderBase]: 148045/223143 cut-off events. [2023-08-27 04:42:13,045 INFO L125 PetriNetUnfolderBase]: For 4014522/4014522 co-relation queries the response was YES. [2023-08-27 04:42:14,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581942 conditions, 223143 events. 148045/223143 cut-off events. For 4014522/4014522 co-relation queries the response was YES. Maximal size of possible extension queue 1550. Compared 1626350 event pairs, 4587 based on Foata normal form. 16224/194404 useless extension candidates. Maximal degree in co-relation 581891. Up to 40323 conditions per place. [2023-08-27 04:42:15,561 INFO L140 encePairwiseOnDemand]: 493/497 looper letters, 1933 selfloop transitions, 47 changer transitions 0/1980 dead transitions. [2023-08-27 04:42:15,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 1980 transitions, 18355 flow [2023-08-27 04:42:15,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-27 04:42:15,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-27 04:42:15,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 11169 transitions. [2023-08-27 04:42:15,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681841046277666 [2023-08-27 04:42:15,575 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 11169 transitions. [2023-08-27 04:42:15,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 11169 transitions. [2023-08-27 04:42:15,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:42:15,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 11169 transitions. [2023-08-27 04:42:15,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 232.6875) internal successors, (11169), 48 states have internal predecessors, (11169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:42:15,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 497.0) internal successors, (24353), 49 states have internal predecessors, (24353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:42:15,621 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 497.0) internal successors, (24353), 49 states have internal predecessors, (24353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:42:15,621 INFO L175 Difference]: Start difference. First operand has 132 places, 70 transitions, 543 flow. Second operand 48 states and 11169 transitions. [2023-08-27 04:42:15,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 1980 transitions, 18355 flow [2023-08-27 04:42:16,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 1980 transitions, 14971 flow, removed 1175 selfloop flow, removed 11 redundant places. [2023-08-27 04:42:16,941 INFO L231 Difference]: Finished difference. Result has 192 places, 94 transitions, 855 flow [2023-08-27 04:42:16,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=855, PETRI_PLACES=192, PETRI_TRANSITIONS=94} [2023-08-27 04:42:16,942 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 153 predicate places. [2023-08-27 04:42:16,942 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 94 transitions, 855 flow [2023-08-27 04:42:16,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 213.20408163265307) internal successors, (10447), 49 states have internal predecessors, (10447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:42:16,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:42:16,944 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1] [2023-08-27 04:42:16,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-27 04:42:17,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-27 04:42:17,151 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 04:42:17,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:42:17,152 INFO L85 PathProgramCache]: Analyzing trace with hash 344069907, now seen corresponding path program 4 times [2023-08-27 04:42:17,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:42:17,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600690502] [2023-08-27 04:42:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:42:17,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:42:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:42:17,767 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:42:17,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:42:17,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600690502] [2023-08-27 04:42:17,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600690502] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:42:17,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695252585] [2023-08-27 04:42:17,767 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 04:42:17,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:42:17,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:42:17,768 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:42:17,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 04:42:17,915 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 04:42:17,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 04:42:17,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 04:42:17,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:42:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:42:17,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:42:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:42:18,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695252585] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:42:18,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:42:18,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-08-27 04:42:18,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876438650] [2023-08-27 04:42:18,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:42:18,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-27 04:42:18,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:42:18,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-27 04:42:18,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-27 04:42:18,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 497 [2023-08-27 04:42:18,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 94 transitions, 855 flow. Second operand has 49 states, 49 states have (on average 217.10204081632654) internal successors, (10638), 49 states have internal predecessors, (10638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:42:18,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:42:18,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 497 [2023-08-27 04:42:18,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:43:18,072 INFO L124 PetriNetUnfolderBase]: 208596/360494 cut-off events. [2023-08-27 04:43:18,072 INFO L125 PetriNetUnfolderBase]: For 4360885/4360885 co-relation queries the response was YES. [2023-08-27 04:43:22,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 920172 conditions, 360494 events. 208596/360494 cut-off events. For 4360885/4360885 co-relation queries the response was YES. Maximal size of possible extension queue 3083. Compared 3407078 event pairs, 4813 based on Foata normal form. 12744/295629 useless extension candidates. Maximal degree in co-relation 920097. Up to 54576 conditions per place. [2023-08-27 04:43:24,020 INFO L140 encePairwiseOnDemand]: 494/497 looper letters, 2874 selfloop transitions, 47 changer transitions 0/2924 dead transitions. [2023-08-27 04:43:24,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 2924 transitions, 32141 flow [2023-08-27 04:43:24,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-27 04:43:24,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-27 04:43:24,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 11104 transitions. [2023-08-27 04:43:24,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46545942320590206 [2023-08-27 04:43:24,032 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 11104 transitions. [2023-08-27 04:43:24,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 11104 transitions. [2023-08-27 04:43:24,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:43:24,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 11104 transitions. [2023-08-27 04:43:24,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 231.33333333333334) internal successors, (11104), 48 states have internal predecessors, (11104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:43:24,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 497.0) internal successors, (24353), 49 states have internal predecessors, (24353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:43:24,062 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 497.0) internal successors, (24353), 49 states have internal predecessors, (24353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:43:24,062 INFO L175 Difference]: Start difference. First operand has 192 places, 94 transitions, 855 flow. Second operand 48 states and 11104 transitions. [2023-08-27 04:43:24,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 2924 transitions, 32141 flow [2023-08-27 04:43:26,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 2924 transitions, 25465 flow, removed 2303 selfloop flow, removed 23 redundant places. [2023-08-27 04:43:26,257 INFO L231 Difference]: Finished difference. Result has 240 places, 118 transitions, 1047 flow [2023-08-27 04:43:26,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1047, PETRI_PLACES=240, PETRI_TRANSITIONS=118} [2023-08-27 04:43:26,258 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 201 predicate places. [2023-08-27 04:43:26,258 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 118 transitions, 1047 flow [2023-08-27 04:43:26,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 217.10204081632654) internal successors, (10638), 49 states have internal predecessors, (10638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:43:26,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:43:26,260 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 1, 1, 1, 1, 1] [2023-08-27 04:43:26,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 04:43:26,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-27 04:43:26,466 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 04:43:26,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:43:26,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1504541215, now seen corresponding path program 5 times [2023-08-27 04:43:26,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:43:26,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957862811] [2023-08-27 04:43:26,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:43:26,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:43:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:43:27,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:43:27,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:43:27,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957862811] [2023-08-27 04:43:27,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957862811] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:43:27,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146074415] [2023-08-27 04:43:27,988 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 04:43:27,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:43:27,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:43:27,989 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:43:27,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 04:43:28,144 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-08-27 04:43:28,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 04:43:28,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-27 04:43:28,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:43:28,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:43:28,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:43:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:43:30,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146074415] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:43:30,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:43:30,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2023-08-27 04:43:30,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232766079] [2023-08-27 04:43:30,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:43:30,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-08-27 04:43:30,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:43:30,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-08-27 04:43:30,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2023-08-27 04:43:30,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 497 [2023-08-27 04:43:30,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 118 transitions, 1047 flow. Second operand has 97 states, 97 states have (on average 213.10309278350516) internal successors, (20671), 97 states have internal predecessors, (20671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:43:30,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:43:30,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 497 [2023-08-27 04:43:30,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand