/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/weaver/parallel-parallel-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 07:08:32,103 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 07:08:32,186 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 07:08:32,192 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 07:08:32,192 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 07:08:32,224 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 07:08:32,224 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 07:08:32,229 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 07:08:32,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 07:08:32,233 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 07:08:32,234 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 07:08:32,234 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 07:08:32,234 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 07:08:32,235 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 07:08:32,235 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 07:08:32,236 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 07:08:32,236 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 07:08:32,236 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 07:08:32,236 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 07:08:32,237 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 07:08:32,237 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 07:08:32,237 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 07:08:32,237 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 07:08:32,238 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 07:08:32,238 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 07:08:32,238 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 07:08:32,239 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 07:08:32,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 07:08:32,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 07:08:32,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 07:08:32,240 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 07:08:32,240 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 07:08:32,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 07:08:32,241 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 07:08:32,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 07:08:32,241 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 07:08:32,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 07:08:32,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 07:08:32,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 07:08:32,584 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 07:08:32,584 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 07:08:32,586 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2023-08-27 07:08:33,702 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 07:08:33,916 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 07:08:33,917 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2023-08-27 07:08:33,924 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ddc74633/1c0900edfb4a486e913280fec3ba55c0/FLAGc7948c46c [2023-08-27 07:08:33,936 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ddc74633/1c0900edfb4a486e913280fec3ba55c0 [2023-08-27 07:08:33,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 07:08:33,939 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 07:08:33,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 07:08:33,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 07:08:33,942 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 07:08:33,943 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:08:33" (1/1) ... [2023-08-27 07:08:33,944 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44fcdb5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:33, skipping insertion in model container [2023-08-27 07:08:33,944 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:08:33" (1/1) ... [2023-08-27 07:08:33,966 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 07:08:34,112 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 07:08:34,119 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 07:08:34,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 07:08:34,152 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 07:08:34,153 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 07:08:34,158 INFO L206 MainTranslator]: Completed translation [2023-08-27 07:08:34,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:34 WrapperNode [2023-08-27 07:08:34,159 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 07:08:34,159 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 07:08:34,160 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 07:08:34,160 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 07:08:34,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:34" (1/1) ... [2023-08-27 07:08:34,186 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:34" (1/1) ... [2023-08-27 07:08:34,232 INFO L138 Inliner]: procedures = 29, calls = 89, calls flagged for inlining = 23, calls inlined = 33, statements flattened = 502 [2023-08-27 07:08:34,232 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 07:08:34,233 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 07:08:34,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 07:08:34,233 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 07:08:34,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:34" (1/1) ... [2023-08-27 07:08:34,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:34" (1/1) ... [2023-08-27 07:08:34,251 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:34" (1/1) ... [2023-08-27 07:08:34,252 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:34" (1/1) ... [2023-08-27 07:08:34,269 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:34" (1/1) ... [2023-08-27 07:08:34,278 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:34" (1/1) ... [2023-08-27 07:08:34,284 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:34" (1/1) ... [2023-08-27 07:08:34,287 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:34" (1/1) ... [2023-08-27 07:08:34,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 07:08:34,296 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 07:08:34,296 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 07:08:34,296 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 07:08:34,297 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:34" (1/1) ... [2023-08-27 07:08:34,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 07:08:34,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:08:34,326 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 07:08:34,352 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 07:08:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 07:08:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 07:08:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 07:08:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 07:08:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 07:08:34,366 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 07:08:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 07:08:34,366 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 07:08:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 07:08:34,367 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 07:08:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 07:08:34,367 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 07:08:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 07:08:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-08-27 07:08:34,367 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-08-27 07:08:34,368 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-08-27 07:08:34,368 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-08-27 07:08:34,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 07:08:34,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 07:08:34,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 07:08:34,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 07:08:34,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 07:08:34,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 07:08:34,372 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 07:08:34,500 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 07:08:34,506 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 07:08:35,186 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 07:08:35,728 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 07:08:35,728 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-27 07:08:35,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:08:35 BoogieIcfgContainer [2023-08-27 07:08:35,730 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 07:08:35,732 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 07:08:35,732 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 07:08:35,735 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 07:08:35,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:08:33" (1/3) ... [2023-08-27 07:08:35,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766aee2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:08:35, skipping insertion in model container [2023-08-27 07:08:35,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:34" (2/3) ... [2023-08-27 07:08:35,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766aee2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:08:35, skipping insertion in model container [2023-08-27 07:08:35,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:08:35" (3/3) ... [2023-08-27 07:08:35,737 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2023-08-27 07:08:35,753 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 07:08:35,753 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 49 error locations. [2023-08-27 07:08:35,754 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 07:08:36,088 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-27 07:08:36,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 373 places, 377 transitions, 826 flow [2023-08-27 07:08:36,299 INFO L124 PetriNetUnfolderBase]: 21/321 cut-off events. [2023-08-27 07:08:36,300 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 07:08:36,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 321 events. 21/321 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 549 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 268. Up to 3 conditions per place. [2023-08-27 07:08:36,310 INFO L82 GeneralOperation]: Start removeDead. Operand has 373 places, 377 transitions, 826 flow [2023-08-27 07:08:36,319 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 310 places, 312 transitions, 672 flow [2023-08-27 07:08:36,322 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 07:08:36,330 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 310 places, 312 transitions, 672 flow [2023-08-27 07:08:36,333 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 310 places, 312 transitions, 672 flow [2023-08-27 07:08:36,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 312 transitions, 672 flow [2023-08-27 07:08:36,387 INFO L124 PetriNetUnfolderBase]: 21/312 cut-off events. [2023-08-27 07:08:36,387 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 07:08:36,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 312 events. 21/312 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 558 event pairs, 0 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 268. Up to 3 conditions per place. [2023-08-27 07:08:36,397 INFO L119 LiptonReduction]: Number of co-enabled transitions 16956 [2023-08-27 07:09:01,851 INFO L134 LiptonReduction]: Checked pairs total: 59570 [2023-08-27 07:09:01,851 INFO L136 LiptonReduction]: Total number of compositions: 339 [2023-08-27 07:09:01,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 07:09:01,868 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;@589fdd68, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 07:09:01,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 103 error locations. [2023-08-27 07:09:01,870 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 07:09:01,870 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 07:09:01,871 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 07:09:01,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:09:01,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-27 07:09:01,872 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2023-08-27 07:09:01,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:09:01,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2082, now seen corresponding path program 1 times [2023-08-27 07:09:01,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:09:01,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865700143] [2023-08-27 07:09:01,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:01,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:09:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:01,976 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 07:09:01,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:09:01,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865700143] [2023-08-27 07:09:01,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865700143] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:09:01,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:09:01,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-27 07:09:01,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450635787] [2023-08-27 07:09:01,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:09:01,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-27 07:09:01,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:09:02,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-27 07:09:02,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-27 07:09:02,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 720 [2023-08-27 07:09:02,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 109 transitions, 266 flow. Second operand has 2 states, 2 states have (on average 274.5) internal successors, (549), 2 states have internal predecessors, (549), 0 states have call successors, (0), 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 07:09:02,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:09:02,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 720 [2023-08-27 07:09:02,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:09:27,381 INFO L124 PetriNetUnfolderBase]: 222342/281393 cut-off events. [2023-08-27 07:09:27,382 INFO L125 PetriNetUnfolderBase]: For 18315/18315 co-relation queries the response was YES. [2023-08-27 07:09:28,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579256 conditions, 281393 events. 222342/281393 cut-off events. For 18315/18315 co-relation queries the response was YES. Maximal size of possible extension queue 13697. Compared 1639395 event pairs, 194005 based on Foata normal form. 0/112870 useless extension candidates. Maximal degree in co-relation 576817. Up to 274189 conditions per place. [2023-08-27 07:09:29,282 INFO L140 encePairwiseOnDemand]: 706/720 looper letters, 73 selfloop transitions, 0 changer transitions 0/95 dead transitions. [2023-08-27 07:09:29,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 95 transitions, 384 flow [2023-08-27 07:09:29,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-27 07:09:29,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-27 07:09:29,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 635 transitions. [2023-08-27 07:09:29,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2023-08-27 07:09:29,295 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 635 transitions. [2023-08-27 07:09:29,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 635 transitions. [2023-08-27 07:09:29,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:09:29,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 635 transitions. [2023-08-27 07:09:29,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 317.5) internal successors, (635), 2 states have internal predecessors, (635), 0 states have call successors, (0), 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 07:09:29,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 720.0) internal successors, (2160), 3 states have internal predecessors, (2160), 0 states have call successors, (0), 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 07:09:29,311 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 720.0) internal successors, (2160), 3 states have internal predecessors, (2160), 0 states have call successors, (0), 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 07:09:29,313 INFO L175 Difference]: Start difference. First operand has 119 places, 109 transitions, 266 flow. Second operand 2 states and 635 transitions. [2023-08-27 07:09:29,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 95 transitions, 384 flow [2023-08-27 07:09:29,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 95 transitions, 352 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-08-27 07:09:29,998 INFO L231 Difference]: Finished difference. Result has 94 places, 95 transitions, 206 flow [2023-08-27 07:09:30,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=720, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=206, PETRI_PLACES=94, PETRI_TRANSITIONS=95} [2023-08-27 07:09:30,003 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -25 predicate places. [2023-08-27 07:09:30,003 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 95 transitions, 206 flow [2023-08-27 07:09:30,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 274.5) internal successors, (549), 2 states have internal predecessors, (549), 0 states have call successors, (0), 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 07:09:30,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:09:30,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 07:09:30,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 07:09:30,004 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2023-08-27 07:09:30,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:09:30,005 INFO L85 PathProgramCache]: Analyzing trace with hash 66612, now seen corresponding path program 1 times [2023-08-27 07:09:30,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:09:30,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368702204] [2023-08-27 07:09:30,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:30,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:09:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:30,132 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 07:09:30,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:09:30,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368702204] [2023-08-27 07:09:30,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368702204] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:09:30,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:09:30,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:09:30,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749206314] [2023-08-27 07:09:30,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:09:30,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:09:30,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:09:30,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:09:30,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:09:30,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 720 [2023-08-27 07:09:30,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 95 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 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 07:09:30,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:09:30,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 720 [2023-08-27 07:09:30,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:09:51,925 INFO L124 PetriNetUnfolderBase]: 222343/281395 cut-off events. [2023-08-27 07:09:51,925 INFO L125 PetriNetUnfolderBase]: For 3201/3201 co-relation queries the response was YES. [2023-08-27 07:09:52,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561545 conditions, 281395 events. 222343/281395 cut-off events. For 3201/3201 co-relation queries the response was YES. Maximal size of possible extension queue 13697. Compared 1639370 event pairs, 194005 based on Foata normal form. 0/112871 useless extension candidates. Maximal degree in co-relation 561542. Up to 274190 conditions per place. [2023-08-27 07:09:53,211 INFO L140 encePairwiseOnDemand]: 715/720 looper letters, 72 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2023-08-27 07:09:53,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 97 transitions, 360 flow [2023-08-27 07:09:53,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:09:53,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:09:53,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 875 transitions. [2023-08-27 07:09:53,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050925925925926 [2023-08-27 07:09:53,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 875 transitions. [2023-08-27 07:09:53,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 875 transitions. [2023-08-27 07:09:53,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:09:53,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 875 transitions. [2023-08-27 07:09:53,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.6666666666667) internal successors, (875), 3 states have internal predecessors, (875), 0 states have call successors, (0), 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 07:09:53,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 720.0) internal successors, (2880), 4 states have internal predecessors, (2880), 0 states have call successors, (0), 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 07:09:53,228 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 720.0) internal successors, (2880), 4 states have internal predecessors, (2880), 0 states have call successors, (0), 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 07:09:53,229 INFO L175 Difference]: Start difference. First operand has 94 places, 95 transitions, 206 flow. Second operand 3 states and 875 transitions. [2023-08-27 07:09:53,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 97 transitions, 360 flow [2023-08-27 07:09:53,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 97 transitions, 360 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 07:09:53,232 INFO L231 Difference]: Finished difference. Result has 97 places, 97 transitions, 227 flow [2023-08-27 07:09:53,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=720, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=97, PETRI_TRANSITIONS=97} [2023-08-27 07:09:53,233 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -22 predicate places. [2023-08-27 07:09:53,233 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 97 transitions, 227 flow [2023-08-27 07:09:53,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 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 07:09:53,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:09:53,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 07:09:53,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 07:09:53,234 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2023-08-27 07:09:53,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:09:53,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2066949, now seen corresponding path program 1 times [2023-08-27 07:09:53,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:09:53,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828481853] [2023-08-27 07:09:53,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:53,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:09:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:53,351 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 07:09:53,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:09:53,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828481853] [2023-08-27 07:09:53,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828481853] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:09:53,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373485922] [2023-08-27 07:09:53,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:53,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:09:53,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:09:53,355 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 07:09:53,356 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 07:09:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:53,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:09:53,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:09:53,597 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 07:09:53,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:09:53,611 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 07:09:53,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373485922] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:09:53,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:09:53,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 07:09:53,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547144682] [2023-08-27 07:09:53,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:09:53,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 07:09:53,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:09:53,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 07:09:53,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 07:09:53,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 720 [2023-08-27 07:09:53,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 97 transitions, 227 flow. Second operand has 7 states, 7 states have (on average 267.14285714285717) internal successors, (1870), 7 states have internal predecessors, (1870), 0 states have call successors, (0), 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 07:09:53,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:09:53,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 720 [2023-08-27 07:09:53,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:15,649 INFO L124 PetriNetUnfolderBase]: 222349/281404 cut-off events. [2023-08-27 07:10:15,650 INFO L125 PetriNetUnfolderBase]: For 3201/3201 co-relation queries the response was YES. [2023-08-27 07:10:16,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561583 conditions, 281404 events. 222349/281404 cut-off events. For 3201/3201 co-relation queries the response was YES. Maximal size of possible extension queue 13697. Compared 1639494 event pairs, 194005 based on Foata normal form. 0/112874 useless extension candidates. Maximal degree in co-relation 561578. Up to 274192 conditions per place. [2023-08-27 07:10:17,114 INFO L140 encePairwiseOnDemand]: 715/720 looper letters, 71 selfloop transitions, 13 changer transitions 0/106 dead transitions. [2023-08-27 07:10:17,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 106 transitions, 431 flow [2023-08-27 07:10:17,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 07:10:17,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 07:10:17,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1949 transitions. [2023-08-27 07:10:17,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3867063492063492 [2023-08-27 07:10:17,120 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1949 transitions. [2023-08-27 07:10:17,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1949 transitions. [2023-08-27 07:10:17,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:17,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1949 transitions. [2023-08-27 07:10:17,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 278.42857142857144) internal successors, (1949), 7 states have internal predecessors, (1949), 0 states have call successors, (0), 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 07:10:17,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 720.0) internal successors, (5760), 8 states have internal predecessors, (5760), 0 states have call successors, (0), 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 07:10:17,136 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 720.0) internal successors, (5760), 8 states have internal predecessors, (5760), 0 states have call successors, (0), 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 07:10:17,136 INFO L175 Difference]: Start difference. First operand has 97 places, 97 transitions, 227 flow. Second operand 7 states and 1949 transitions. [2023-08-27 07:10:17,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 106 transitions, 431 flow [2023-08-27 07:10:17,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 106 transitions, 426 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 07:10:17,140 INFO L231 Difference]: Finished difference. Result has 105 places, 106 transitions, 306 flow [2023-08-27 07:10:17,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=720, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=306, PETRI_PLACES=105, PETRI_TRANSITIONS=106} [2023-08-27 07:10:17,141 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -14 predicate places. [2023-08-27 07:10:17,141 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 106 transitions, 306 flow [2023-08-27 07:10:17,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 267.14285714285717) internal successors, (1870), 7 states have internal predecessors, (1870), 0 states have call successors, (0), 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 07:10:17,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:17,142 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-27 07:10:17,154 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 07:10:17,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:10:17,349 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2023-08-27 07:10:17,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:17,349 INFO L85 PathProgramCache]: Analyzing trace with hash 64077380, now seen corresponding path program 1 times [2023-08-27 07:10:17,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:17,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40501086] [2023-08-27 07:10:17,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:17,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:17,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:10:17,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:17,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40501086] [2023-08-27 07:10:17,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40501086] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:10:17,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673431766] [2023-08-27 07:10:17,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:17,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:10:17,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:10:17,457 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 07:10:17,458 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 07:10:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:17,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 07:10:17,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:10:17,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:10:17,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:10:17,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673431766] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:17,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:10:17,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 07:10:17,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433574728] [2023-08-27 07:10:17,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:17,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 07:10:17,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:17,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 07:10:17,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 07:10:17,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 720 [2023-08-27 07:10:17,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 106 transitions, 306 flow. Second operand has 5 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 0 states have call successors, (0), 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 07:10:17,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:17,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 720 [2023-08-27 07:10:17,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:39,834 INFO L124 PetriNetUnfolderBase]: 222346/281400 cut-off events. [2023-08-27 07:10:39,835 INFO L125 PetriNetUnfolderBase]: For 3203/3203 co-relation queries the response was YES. [2023-08-27 07:10:40,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561591 conditions, 281400 events. 222346/281400 cut-off events. For 3203/3203 co-relation queries the response was YES. Maximal size of possible extension queue 13697. Compared 1641104 event pairs, 194005 based on Foata normal form. 0/112878 useless extension candidates. Maximal degree in co-relation 561583. Up to 274189 conditions per place. [2023-08-27 07:10:41,327 INFO L140 encePairwiseOnDemand]: 716/720 looper letters, 72 selfloop transitions, 8 changer transitions 0/102 dead transitions. [2023-08-27 07:10:41,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 102 transitions, 439 flow [2023-08-27 07:10:41,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:10:41,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:10:41,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1408 transitions. [2023-08-27 07:10:41,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39111111111111113 [2023-08-27 07:10:41,332 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1408 transitions. [2023-08-27 07:10:41,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1408 transitions. [2023-08-27 07:10:41,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:41,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1408 transitions. [2023-08-27 07:10:41,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 281.6) internal successors, (1408), 5 states have internal predecessors, (1408), 0 states have call successors, (0), 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 07:10:41,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 720.0) internal successors, (4320), 6 states have internal predecessors, (4320), 0 states have call successors, (0), 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 07:10:41,347 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 720.0) internal successors, (4320), 6 states have internal predecessors, (4320), 0 states have call successors, (0), 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 07:10:41,348 INFO L175 Difference]: Start difference. First operand has 105 places, 106 transitions, 306 flow. Second operand 5 states and 1408 transitions. [2023-08-27 07:10:41,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 102 transitions, 439 flow [2023-08-27 07:10:41,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 102 transitions, 418 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 07:10:41,359 INFO L231 Difference]: Finished difference. Result has 106 places, 102 transitions, 274 flow [2023-08-27 07:10:41,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=720, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=274, PETRI_PLACES=106, PETRI_TRANSITIONS=102} [2023-08-27 07:10:41,360 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -13 predicate places. [2023-08-27 07:10:41,361 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 102 transitions, 274 flow [2023-08-27 07:10:41,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 0 states have call successors, (0), 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 07:10:41,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:41,362 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 07:10:41,371 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 07:10:41,568 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,SelfDestructingSolverStorable3 [2023-08-27 07:10:41,569 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2023-08-27 07:10:41,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:41,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1448898676, now seen corresponding path program 2 times [2023-08-27 07:10:41,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:41,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651113954] [2023-08-27 07:10:41,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:41,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:41,720 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 07:10:41,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:41,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651113954] [2023-08-27 07:10:41,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651113954] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:10:41,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615621094] [2023-08-27 07:10:41,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:10:41,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:10:41,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:10:41,723 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 07:10:41,725 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 07:10:41,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 07:10:41,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:10:41,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 07:10:41,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:10:41,922 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 07:10:41,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:10:41,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615621094] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:41,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:10:41,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 07:10:41,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59820805] [2023-08-27 07:10:41,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:41,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:10:41,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:41,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:10:41,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 07:10:41,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 720 [2023-08-27 07:10:41,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 102 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 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 07:10:41,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:41,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 720 [2023-08-27 07:10:41,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:11:04,528 INFO L124 PetriNetUnfolderBase]: 222346/281399 cut-off events. [2023-08-27 07:11:04,529 INFO L125 PetriNetUnfolderBase]: For 3212/3212 co-relation queries the response was YES. [2023-08-27 07:11:05,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561584 conditions, 281399 events. 222346/281399 cut-off events. For 3212/3212 co-relation queries the response was YES. Maximal size of possible extension queue 13697. Compared 1637751 event pairs, 194005 based on Foata normal form. 1/112880 useless extension candidates. Maximal degree in co-relation 561575. Up to 274194 conditions per place. [2023-08-27 07:11:06,348 INFO L140 encePairwiseOnDemand]: 718/720 looper letters, 78 selfloop transitions, 1 changer transitions 0/101 dead transitions. [2023-08-27 07:11:06,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 101 transitions, 422 flow [2023-08-27 07:11:06,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:11:06,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:11:06,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2023-08-27 07:11:06,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2023-08-27 07:11:06,356 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 873 transitions. [2023-08-27 07:11:06,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 873 transitions. [2023-08-27 07:11:06,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:11:06,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 873 transitions. [2023-08-27 07:11:06,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 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 07:11:06,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 720.0) internal successors, (2880), 4 states have internal predecessors, (2880), 0 states have call successors, (0), 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 07:11:06,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 720.0) internal successors, (2880), 4 states have internal predecessors, (2880), 0 states have call successors, (0), 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 07:11:06,363 INFO L175 Difference]: Start difference. First operand has 106 places, 102 transitions, 274 flow. Second operand 3 states and 873 transitions. [2023-08-27 07:11:06,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 101 transitions, 422 flow [2023-08-27 07:11:06,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 394 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-27 07:11:06,368 INFO L231 Difference]: Finished difference. Result has 100 places, 101 transitions, 238 flow [2023-08-27 07:11:06,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=720, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=100, PETRI_TRANSITIONS=101} [2023-08-27 07:11:06,371 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -19 predicate places. [2023-08-27 07:11:06,371 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 101 transitions, 238 flow [2023-08-27 07:11:06,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 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 07:11:06,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:11:06,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:11:06,381 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 07:11:06,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:11:06,582 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2023-08-27 07:11:06,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:11:06,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1479602882, now seen corresponding path program 1 times [2023-08-27 07:11:06,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:11:06,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452017962] [2023-08-27 07:11:06,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:11:06,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:11:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:11:06,826 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 07:11:06,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:11:06,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452017962] [2023-08-27 07:11:06,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452017962] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:11:06,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:11:06,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:11:06,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195874659] [2023-08-27 07:11:06,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:11:06,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:11:06,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:11:06,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:11:06,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 07:11:06,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 720 [2023-08-27 07:11:06,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 101 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 245.25) internal successors, (981), 4 states have internal predecessors, (981), 0 states have call successors, (0), 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 07:11:06,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:11:06,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 720 [2023-08-27 07:11:06,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:11:29,882 INFO L124 PetriNetUnfolderBase]: 240478/309595 cut-off events. [2023-08-27 07:11:29,882 INFO L125 PetriNetUnfolderBase]: For 4195/4195 co-relation queries the response was YES. [2023-08-27 07:11:30,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614316 conditions, 309595 events. 240478/309595 cut-off events. For 4195/4195 co-relation queries the response was YES. Maximal size of possible extension queue 14388. Compared 1909154 event pairs, 209764 based on Foata normal form. 194/133570 useless extension candidates. Maximal degree in co-relation 614311. Up to 274193 conditions per place. [2023-08-27 07:11:31,514 INFO L140 encePairwiseOnDemand]: 698/720 looper letters, 118 selfloop transitions, 3 changer transitions 2/145 dead transitions. [2023-08-27 07:11:31,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 145 transitions, 586 flow [2023-08-27 07:11:31,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 07:11:31,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 07:11:31,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1112 transitions. [2023-08-27 07:11:31,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3861111111111111 [2023-08-27 07:11:31,517 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1112 transitions. [2023-08-27 07:11:31,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1112 transitions. [2023-08-27 07:11:31,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:11:31,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1112 transitions. [2023-08-27 07:11:31,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 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 07:11:31,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 720.0) internal successors, (3600), 5 states have internal predecessors, (3600), 0 states have call successors, (0), 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 07:11:31,525 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 720.0) internal successors, (3600), 5 states have internal predecessors, (3600), 0 states have call successors, (0), 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 07:11:31,525 INFO L175 Difference]: Start difference. First operand has 100 places, 101 transitions, 238 flow. Second operand 4 states and 1112 transitions. [2023-08-27 07:11:31,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 145 transitions, 586 flow [2023-08-27 07:11:31,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 145 transitions, 585 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:11:31,528 INFO L231 Difference]: Finished difference. Result has 103 places, 101 transitions, 282 flow [2023-08-27 07:11:31,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=720, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=103, PETRI_TRANSITIONS=101} [2023-08-27 07:11:31,529 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -16 predicate places. [2023-08-27 07:11:31,529 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 101 transitions, 282 flow [2023-08-27 07:11:31,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.25) internal successors, (981), 4 states have internal predecessors, (981), 0 states have call successors, (0), 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 07:11:31,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:11:31,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:11:31,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 07:11:31,530 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2023-08-27 07:11:31,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:11:31,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1131885074, now seen corresponding path program 1 times [2023-08-27 07:11:31,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:11:31,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118098762] [2023-08-27 07:11:31,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:11:31,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:11:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:11:31,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:11:31,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:11:31,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118098762] [2023-08-27 07:11:31,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118098762] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:11:31,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:11:31,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:11:31,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76129440] [2023-08-27 07:11:31,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:11:31,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:11:31,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:11:31,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:11:31,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:11:31,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 720 [2023-08-27 07:11:31,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 101 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 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 07:11:31,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:11:31,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 720 [2023-08-27 07:11:31,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:11:52,500 INFO L124 PetriNetUnfolderBase]: 214398/272743 cut-off events. [2023-08-27 07:11:52,500 INFO L125 PetriNetUnfolderBase]: For 14392/14392 co-relation queries the response was YES. [2023-08-27 07:11:53,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614461 conditions, 272743 events. 214398/272743 cut-off events. For 14392/14392 co-relation queries the response was YES. Maximal size of possible extension queue 12613. Compared 1610028 event pairs, 186000 based on Foata normal form. 0/126002 useless extension candidates. Maximal degree in co-relation 614455. Up to 265281 conditions per place. [2023-08-27 07:11:54,192 INFO L140 encePairwiseOnDemand]: 717/720 looper letters, 76 selfloop transitions, 1 changer transitions 0/99 dead transitions. [2023-08-27 07:11:54,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 99 transitions, 428 flow [2023-08-27 07:11:54,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:11:54,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:11:54,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 884 transitions. [2023-08-27 07:11:54,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40925925925925927 [2023-08-27 07:11:54,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 884 transitions. [2023-08-27 07:11:54,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 884 transitions. [2023-08-27 07:11:54,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:11:54,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 884 transitions. [2023-08-27 07:11:54,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.6666666666667) internal successors, (884), 3 states have internal predecessors, (884), 0 states have call successors, (0), 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 07:11:54,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 720.0) internal successors, (2880), 4 states have internal predecessors, (2880), 0 states have call successors, (0), 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 07:11:54,200 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 720.0) internal successors, (2880), 4 states have internal predecessors, (2880), 0 states have call successors, (0), 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 07:11:54,200 INFO L175 Difference]: Start difference. First operand has 103 places, 101 transitions, 282 flow. Second operand 3 states and 884 transitions. [2023-08-27 07:11:54,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 99 transitions, 428 flow [2023-08-27 07:11:54,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 99 transitions, 423 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:11:54,235 INFO L231 Difference]: Finished difference. Result has 101 places, 99 transitions, 271 flow [2023-08-27 07:11:54,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=720, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=101, PETRI_TRANSITIONS=99} [2023-08-27 07:11:54,235 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -18 predicate places. [2023-08-27 07:11:54,236 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 99 transitions, 271 flow [2023-08-27 07:11:54,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 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 07:11:54,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:11:54,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:11:54,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 07:11:54,236 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2023-08-27 07:11:54,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:11:54,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1131885070, now seen corresponding path program 1 times [2023-08-27 07:11:54,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:11:54,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209797429] [2023-08-27 07:11:54,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:11:54,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:11:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:11:54,403 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 07:11:54,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:11:54,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209797429] [2023-08-27 07:11:54,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209797429] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:11:54,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501355322] [2023-08-27 07:11:54,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:11:54,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:11:54,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:11:54,406 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 07:11:54,412 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 07:11:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:11:54,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 07:11:54,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:11:54,726 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 07:11:54,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:11:54,797 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 07:11:54,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501355322] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:11:54,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:11:54,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-08-27 07:11:54,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20925405] [2023-08-27 07:11:54,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:11:54,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 07:11:54,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:11:54,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 07:11:54,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-27 07:11:54,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 720 [2023-08-27 07:11:54,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 99 transitions, 271 flow. Second operand has 11 states, 11 states have (on average 245.63636363636363) internal successors, (2702), 11 states have internal predecessors, (2702), 0 states have call successors, (0), 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 07:11:54,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:11:54,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 720 [2023-08-27 07:11:54,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:18,126 INFO L124 PetriNetUnfolderBase]: 228452/294099 cut-off events. [2023-08-27 07:12:18,127 INFO L125 PetriNetUnfolderBase]: For 18715/18715 co-relation queries the response was YES. [2023-08-27 07:12:18,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655854 conditions, 294099 events. 228452/294099 cut-off events. For 18715/18715 co-relation queries the response was YES. Maximal size of possible extension queue 12858. Compared 1818075 event pairs, 152613 based on Foata normal form. 2816/143819 useless extension candidates. Maximal degree in co-relation 655848. Up to 179523 conditions per place. [2023-08-27 07:12:19,754 INFO L140 encePairwiseOnDemand]: 694/720 looper letters, 193 selfloop transitions, 21 changer transitions 0/236 dead transitions. [2023-08-27 07:12:19,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 236 transitions, 1045 flow [2023-08-27 07:12:19,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 07:12:19,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 07:12:19,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2178 transitions. [2023-08-27 07:12:19,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2023-08-27 07:12:19,759 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2178 transitions. [2023-08-27 07:12:19,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2178 transitions. [2023-08-27 07:12:19,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:19,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2178 transitions. [2023-08-27 07:12:19,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 272.25) internal successors, (2178), 8 states have internal predecessors, (2178), 0 states have call successors, (0), 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 07:12:19,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 720.0) internal successors, (6480), 9 states have internal predecessors, (6480), 0 states have call successors, (0), 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 07:12:19,770 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 720.0) internal successors, (6480), 9 states have internal predecessors, (6480), 0 states have call successors, (0), 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 07:12:19,770 INFO L175 Difference]: Start difference. First operand has 101 places, 99 transitions, 271 flow. Second operand 8 states and 2178 transitions. [2023-08-27 07:12:19,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 236 transitions, 1045 flow [2023-08-27 07:12:19,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 236 transitions, 1044 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:12:19,798 INFO L231 Difference]: Finished difference. Result has 108 places, 114 transitions, 402 flow [2023-08-27 07:12:19,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=720, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=402, PETRI_PLACES=108, PETRI_TRANSITIONS=114} [2023-08-27 07:12:19,799 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -11 predicate places. [2023-08-27 07:12:19,799 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 114 transitions, 402 flow [2023-08-27 07:12:19,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 245.63636363636363) internal successors, (2702), 11 states have internal predecessors, (2702), 0 states have call successors, (0), 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 07:12:19,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:19,800 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:12:19,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-27 07:12:20,005 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 07:12:20,006 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2023-08-27 07:12:20,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:20,006 INFO L85 PathProgramCache]: Analyzing trace with hash 483632990, now seen corresponding path program 1 times [2023-08-27 07:12:20,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:20,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353701148] [2023-08-27 07:12:20,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:20,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:20,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:12:20,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:20,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353701148] [2023-08-27 07:12:20,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353701148] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:12:20,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607750693] [2023-08-27 07:12:20,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:20,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:12:20,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:12:20,612 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 07:12:20,615 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 07:12:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:20,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 07:12:20,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:12:21,046 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 07:12:21,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:12:21,100 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 07:12:21,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:12:21,175 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 07:12:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:12:21,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:12:21,672 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread1Thread1of1ForFork1_~#t2~0#1.base_25| Int)) (or (forall ((v_ArrVal_225 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork1_~#t2~0#1.base_25| v_ArrVal_225) c_~x~0.base) (+ c_~x~0.offset 4 (* c_~i1~0 4))) 9223372039002259456))) (<= |v_thread1Thread1of1ForFork1_~#t2~0#1.base_25| |c_#StackHeapBarrier|))) is different from false [2023-08-27 07:12:21,745 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:12:21,746 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-27 07:12:21,757 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:12:21,757 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2023-08-27 07:12:21,773 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-08-27 07:12:21,780 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-08-27 07:12:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:12:21,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607750693] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:12:21,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:12:21,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-27 07:12:21,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247845470] [2023-08-27 07:12:21,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:12:21,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 07:12:21,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:21,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 07:12:21,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=4, NotChecked=34, Total=380 [2023-08-27 07:12:21,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 720 [2023-08-27 07:12:21,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 114 transitions, 402 flow. Second operand has 20 states, 20 states have (on average 215.5) internal successors, (4310), 20 states have internal predecessors, (4310), 0 states have call successors, (0), 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 07:12:21,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:21,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 720 [2023-08-27 07:12:21,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand