/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 12:08:45,695 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 12:08:45,756 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 [2023-08-26 12:08:45,765 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 12:08:45,765 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 12:08:45,795 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 12:08:45,795 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 12:08:45,799 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 12:08:45,800 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 12:08:45,802 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 12:08:45,804 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 12:08:45,805 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 12:08:45,805 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 12:08:45,805 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 12:08:45,805 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 12:08:45,805 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 12:08:45,806 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 12:08:45,806 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 12:08:45,806 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 12:08:45,806 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 12:08:45,806 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 12:08:45,807 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 12:08:45,808 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 12:08:45,808 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 12:08:45,808 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 12:08:45,808 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 12:08:45,808 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 12:08:45,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:08:45,809 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 12:08:45,809 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 12:08:45,810 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 12:08:45,810 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 12:08:45,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 12:08:45,810 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 12:08:45,810 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 12:08:45,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 12:08:46,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 12:08:46,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 12:08:46,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 12:08:46,270 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 12:08:46,270 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 12:08:46,272 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2023-08-26 12:08:47,393 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 12:08:47,670 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 12:08:47,670 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2023-08-26 12:08:47,681 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/272c3f1a8/655c2c7620d940cfa70cba1bcb7a6219/FLAG57711b335 [2023-08-26 12:08:47,691 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/272c3f1a8/655c2c7620d940cfa70cba1bcb7a6219 [2023-08-26 12:08:47,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 12:08:47,697 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 12:08:47,698 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 12:08:47,698 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 12:08:47,700 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 12:08:47,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:08:47" (1/1) ... [2023-08-26 12:08:47,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64072c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:47, skipping insertion in model container [2023-08-26 12:08:47,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:08:47" (1/1) ... [2023-08-26 12:08:47,750 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 12:08:48,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:08:48,096 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 12:08:48,124 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 12:08:48,131 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 12:08:48,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:08:48,195 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 12:08:48,195 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 12:08:48,200 INFO L206 MainTranslator]: Completed translation [2023-08-26 12:08:48,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:48 WrapperNode [2023-08-26 12:08:48,201 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 12:08:48,202 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 12:08:48,202 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 12:08:48,202 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 12:08:48,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:48" (1/1) ... [2023-08-26 12:08:48,232 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:48" (1/1) ... [2023-08-26 12:08:48,263 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 177 [2023-08-26 12:08:48,264 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 12:08:48,265 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 12:08:48,265 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 12:08:48,265 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 12:08:48,272 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:48" (1/1) ... [2023-08-26 12:08:48,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:48" (1/1) ... [2023-08-26 12:08:48,286 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:48" (1/1) ... [2023-08-26 12:08:48,286 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:48" (1/1) ... [2023-08-26 12:08:48,292 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:48" (1/1) ... [2023-08-26 12:08:48,293 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:48" (1/1) ... [2023-08-26 12:08:48,295 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:48" (1/1) ... [2023-08-26 12:08:48,296 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:48" (1/1) ... [2023-08-26 12:08:48,315 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 12:08:48,316 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 12:08:48,316 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 12:08:48,316 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 12:08:48,317 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:48" (1/1) ... [2023-08-26 12:08:48,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:08:48,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:08:48,347 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) [2023-08-26 12:08:48,365 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 [2023-08-26 12:08:48,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 12:08:48,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 12:08:48,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 12:08:48,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 12:08:48,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 12:08:48,377 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-26 12:08:48,377 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-26 12:08:48,377 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-26 12:08:48,377 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-26 12:08:48,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 12:08:48,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 12:08:48,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 12:08:48,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 12:08:48,379 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 12:08:48,507 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 12:08:48,509 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 12:08:48,772 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 12:08:48,917 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 12:08:48,918 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 12:08:48,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:08:48 BoogieIcfgContainer [2023-08-26 12:08:48,919 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 12:08:48,922 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 12:08:48,922 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 12:08:48,924 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 12:08:48,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:08:47" (1/3) ... [2023-08-26 12:08:48,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4d345b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:08:48, skipping insertion in model container [2023-08-26 12:08:48,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:48" (2/3) ... [2023-08-26 12:08:48,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4d345b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:08:48, skipping insertion in model container [2023-08-26 12:08:48,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:08:48" (3/3) ... [2023-08-26 12:08:48,928 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2023-08-26 12:08:48,942 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 12:08:48,942 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-26 12:08:48,942 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 12:08:48,988 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 12:08:49,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 100 transitions, 210 flow [2023-08-26 12:08:49,111 INFO L124 PetriNetUnfolderBase]: 3/98 cut-off events. [2023-08-26 12:08:49,112 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:08:49,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 98 events. 3/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-08-26 12:08:49,118 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 100 transitions, 210 flow [2023-08-26 12:08:49,121 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 98 transitions, 202 flow [2023-08-26 12:08:49,124 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:08:49,133 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 98 transitions, 202 flow [2023-08-26 12:08:49,137 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 98 transitions, 202 flow [2023-08-26 12:08:49,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 98 transitions, 202 flow [2023-08-26 12:08:49,171 INFO L124 PetriNetUnfolderBase]: 3/98 cut-off events. [2023-08-26 12:08:49,171 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:08:49,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 98 events. 3/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-08-26 12:08:49,173 INFO L119 LiptonReduction]: Number of co-enabled transitions 1420 [2023-08-26 12:08:52,433 INFO L134 LiptonReduction]: Checked pairs total: 4942 [2023-08-26 12:08:52,433 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-08-26 12:08:52,442 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:08:52,446 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;@1fe32e0e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:08:52,446 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-26 12:08:52,447 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:08:52,447 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 12:08:52,447 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:08:52,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:08:52,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 12:08:52,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-26 12:08:52,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:08:52,451 INFO L85 PathProgramCache]: Analyzing trace with hash 546, now seen corresponding path program 1 times [2023-08-26 12:08:52,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:08:52,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654967939] [2023-08-26 12:08:52,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:08:52,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:08:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:08:52,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:08:52,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:08:52,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654967939] [2023-08-26 12:08:52,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654967939] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:08:52,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:08:52,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 12:08:52,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822561085] [2023-08-26 12:08:52,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:08:52,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 12:08:52,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:08:52,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 12:08:52,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 12:08:52,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 202 [2023-08-26 12:08:52,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:52,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:08:52,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 202 [2023-08-26 12:08:52,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:08:52,692 INFO L124 PetriNetUnfolderBase]: 304/518 cut-off events. [2023-08-26 12:08:52,692 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-26 12:08:52,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1049 conditions, 518 events. 304/518 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2044 event pairs, 304 based on Foata normal form. 0/451 useless extension candidates. Maximal degree in co-relation 1039. Up to 516 conditions per place. [2023-08-26 12:08:52,698 INFO L140 encePairwiseOnDemand]: 198/202 looper letters, 19 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2023-08-26 12:08:52,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 20 transitions, 84 flow [2023-08-26 12:08:52,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 12:08:52,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 12:08:52,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 193 transitions. [2023-08-26 12:08:52,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777227722772277 [2023-08-26 12:08:52,709 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 193 transitions. [2023-08-26 12:08:52,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 193 transitions. [2023-08-26 12:08:52,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:08:52,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 193 transitions. [2023-08-26 12:08:52,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:52,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:52,720 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:52,721 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 2 states and 193 transitions. [2023-08-26 12:08:52,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 20 transitions, 84 flow [2023-08-26 12:08:52,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 82 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:08:52,724 INFO L231 Difference]: Finished difference. Result has 26 places, 20 transitions, 44 flow [2023-08-26 12:08:52,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=26, PETRI_TRANSITIONS=20} [2023-08-26 12:08:52,729 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -5 predicate places. [2023-08-26 12:08:52,729 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 44 flow [2023-08-26 12:08:52,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:52,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:08:52,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 12:08:52,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 12:08:52,730 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONASSERT === [P1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-26 12:08:52,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:08:52,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1092702056, now seen corresponding path program 1 times [2023-08-26 12:08:52,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:08:52,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82469227] [2023-08-26 12:08:52,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:08:52,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:08:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:08:52,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:08:52,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:08:52,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82469227] [2023-08-26 12:08:52,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82469227] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:08:52,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:08:52,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:08:52,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671891471] [2023-08-26 12:08:52,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:08:52,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:08:52,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:08:52,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:08:52,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:08:52,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 202 [2023-08-26 12:08:52,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:52,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:08:52,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 202 [2023-08-26 12:08:52,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:08:53,095 INFO L124 PetriNetUnfolderBase]: 264/453 cut-off events. [2023-08-26 12:08:53,096 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:08:53,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 453 events. 264/453 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1769 event pairs, 64 based on Foata normal form. 0/416 useless extension candidates. Maximal degree in co-relation 915. Up to 326 conditions per place. [2023-08-26 12:08:53,098 INFO L140 encePairwiseOnDemand]: 199/202 looper letters, 22 selfloop transitions, 2 changer transitions 2/27 dead transitions. [2023-08-26 12:08:53,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 27 transitions, 110 flow [2023-08-26 12:08:53,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:08:53,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:08:53,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2023-08-26 12:08:53,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603960396039604 [2023-08-26 12:08:53,110 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2023-08-26 12:08:53,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2023-08-26 12:08:53,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:08:53,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2023-08-26 12:08:53,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:53,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:53,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:53,112 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 44 flow. Second operand 3 states and 279 transitions. [2023-08-26 12:08:53,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 27 transitions, 110 flow [2023-08-26 12:08:53,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 27 transitions, 110 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:08:53,113 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 44 flow [2023-08-26 12:08:53,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-08-26 12:08:53,114 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -4 predicate places. [2023-08-26 12:08:53,114 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 44 flow [2023-08-26 12:08:53,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:53,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:08:53,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:08:53,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 12:08:53,115 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [P1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-26 12:08:53,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:08:53,115 INFO L85 PathProgramCache]: Analyzing trace with hash 486032701, now seen corresponding path program 1 times [2023-08-26 12:08:53,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:08:53,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901346051] [2023-08-26 12:08:53,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:08:53,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:08:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:08:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:08:53,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:08:53,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901346051] [2023-08-26 12:08:53,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901346051] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:08:53,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:08:53,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:08:53,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910243027] [2023-08-26 12:08:53,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:08:53,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:08:53,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:08:53,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:08:53,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:08:53,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 202 [2023-08-26 12:08:53,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:53,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:08:53,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 202 [2023-08-26 12:08:53,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:08:53,721 INFO L124 PetriNetUnfolderBase]: 209/366 cut-off events. [2023-08-26 12:08:53,721 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-26 12:08:53,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 769 conditions, 366 events. 209/366 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1211 event pairs, 113 based on Foata normal form. 24/390 useless extension candidates. Maximal degree in co-relation 765. Up to 186 conditions per place. [2023-08-26 12:08:53,724 INFO L140 encePairwiseOnDemand]: 199/202 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-08-26 12:08:53,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 25 transitions, 108 flow [2023-08-26 12:08:53,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:08:53,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:08:53,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2023-08-26 12:08:53,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4042904290429043 [2023-08-26 12:08:53,727 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2023-08-26 12:08:53,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2023-08-26 12:08:53,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:08:53,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2023-08-26 12:08:53,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:53,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:53,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:53,730 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 44 flow. Second operand 3 states and 245 transitions. [2023-08-26 12:08:53,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 25 transitions, 108 flow [2023-08-26 12:08:53,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:08:53,731 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 48 flow [2023-08-26 12:08:53,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-08-26 12:08:53,732 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -4 predicate places. [2023-08-26 12:08:53,732 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 48 flow [2023-08-26 12:08:53,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:53,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:08:53,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:08:53,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 12:08:53,736 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [P1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-26 12:08:53,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:08:53,737 INFO L85 PathProgramCache]: Analyzing trace with hash -766653259, now seen corresponding path program 1 times [2023-08-26 12:08:53,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:08:53,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296211613] [2023-08-26 12:08:53,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:08:53,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:08:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:08:54,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:08:54,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:08:54,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296211613] [2023-08-26 12:08:54,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296211613] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:08:54,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:08:54,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 12:08:54,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845993028] [2023-08-26 12:08:54,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:08:54,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 12:08:54,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:08:54,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 12:08:54,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-26 12:08:54,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 202 [2023-08-26 12:08:54,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 48 flow. Second operand has 7 states, 7 states have (on average 78.57142857142857) internal successors, (550), 7 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:54,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:08:54,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 202 [2023-08-26 12:08:54,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:08:54,481 INFO L124 PetriNetUnfolderBase]: 174/316 cut-off events. [2023-08-26 12:08:54,482 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-26 12:08:54,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 316 events. 174/316 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1137 event pairs, 95 based on Foata normal form. 3/319 useless extension candidates. Maximal degree in co-relation 686. Up to 279 conditions per place. [2023-08-26 12:08:54,483 INFO L140 encePairwiseOnDemand]: 197/202 looper letters, 26 selfloop transitions, 5 changer transitions 0/32 dead transitions. [2023-08-26 12:08:54,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 32 transitions, 143 flow [2023-08-26 12:08:54,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:08:54,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:08:54,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2023-08-26 12:08:54,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4207920792079208 [2023-08-26 12:08:54,485 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 340 transitions. [2023-08-26 12:08:54,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 340 transitions. [2023-08-26 12:08:54,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:08:54,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 340 transitions. [2023-08-26 12:08:54,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:54,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:54,488 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:54,488 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 48 flow. Second operand 4 states and 340 transitions. [2023-08-26 12:08:54,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 32 transitions, 143 flow [2023-08-26 12:08:54,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 32 transitions, 137 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:08:54,490 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 76 flow [2023-08-26 12:08:54,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-08-26 12:08:54,491 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -1 predicate places. [2023-08-26 12:08:54,492 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 76 flow [2023-08-26 12:08:54,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.57142857142857) internal successors, (550), 7 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:54,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:08:54,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:08:54,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 12:08:54,493 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [P1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-26 12:08:54,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:08:54,493 INFO L85 PathProgramCache]: Analyzing trace with hash -687111289, now seen corresponding path program 2 times [2023-08-26 12:08:54,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:08:54,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214986717] [2023-08-26 12:08:54,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:08:54,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:08:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:08:54,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:08:54,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:08:54,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214986717] [2023-08-26 12:08:54,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214986717] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:08:54,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:08:54,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 12:08:54,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971001539] [2023-08-26 12:08:54,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:08:54,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 12:08:54,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:08:54,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 12:08:54,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-26 12:08:54,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 202 [2023-08-26 12:08:54,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 78.57142857142857) internal successors, (550), 7 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:54,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:08:54,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 202 [2023-08-26 12:08:54,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:08:55,087 INFO L124 PetriNetUnfolderBase]: 169/308 cut-off events. [2023-08-26 12:08:55,088 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2023-08-26 12:08:55,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 773 conditions, 308 events. 169/308 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1097 event pairs, 94 based on Foata normal form. 3/311 useless extension candidates. Maximal degree in co-relation 766. Up to 263 conditions per place. [2023-08-26 12:08:55,089 INFO L140 encePairwiseOnDemand]: 198/202 looper letters, 26 selfloop transitions, 7 changer transitions 0/34 dead transitions. [2023-08-26 12:08:55,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 175 flow [2023-08-26 12:08:55,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:08:55,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:08:55,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 339 transitions. [2023-08-26 12:08:55,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41955445544554454 [2023-08-26 12:08:55,090 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 339 transitions. [2023-08-26 12:08:55,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 339 transitions. [2023-08-26 12:08:55,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:08:55,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 339 transitions. [2023-08-26 12:08:55,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:55,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:55,093 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:55,093 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 76 flow. Second operand 4 states and 339 transitions. [2023-08-26 12:08:55,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 175 flow [2023-08-26 12:08:55,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 34 transitions, 175 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:08:55,094 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 111 flow [2023-08-26 12:08:55,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2023-08-26 12:08:55,095 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2023-08-26 12:08:55,095 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 111 flow [2023-08-26 12:08:55,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.57142857142857) internal successors, (550), 7 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:55,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:08:55,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:08:55,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 12:08:55,096 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [P1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-26 12:08:55,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:08:55,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1054048706, now seen corresponding path program 1 times [2023-08-26 12:08:55,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:08:55,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685343180] [2023-08-26 12:08:55,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:08:55,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:08:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:08:55,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:08:55,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:08:55,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685343180] [2023-08-26 12:08:55,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685343180] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:08:55,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:08:55,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:08:55,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123049246] [2023-08-26 12:08:55,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:08:55,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:08:55,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:08:55,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:08:55,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:08:55,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 202 [2023-08-26 12:08:55,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:55,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:08:55,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 202 [2023-08-26 12:08:55,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:08:55,378 INFO L124 PetriNetUnfolderBase]: 104/216 cut-off events. [2023-08-26 12:08:55,378 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2023-08-26 12:08:55,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 216 events. 104/216 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 795 event pairs, 20 based on Foata normal form. 35/250 useless extension candidates. Maximal degree in co-relation 584. Up to 78 conditions per place. [2023-08-26 12:08:55,379 INFO L140 encePairwiseOnDemand]: 197/202 looper letters, 28 selfloop transitions, 3 changer transitions 23/55 dead transitions. [2023-08-26 12:08:55,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 55 transitions, 311 flow [2023-08-26 12:08:55,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 12:08:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 12:08:55,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 437 transitions. [2023-08-26 12:08:55,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43267326732673267 [2023-08-26 12:08:55,381 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 437 transitions. [2023-08-26 12:08:55,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 437 transitions. [2023-08-26 12:08:55,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:08:55,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 437 transitions. [2023-08-26 12:08:55,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:55,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:55,383 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:55,383 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 111 flow. Second operand 5 states and 437 transitions. [2023-08-26 12:08:55,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 55 transitions, 311 flow [2023-08-26 12:08:55,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 55 transitions, 265 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-26 12:08:55,385 INFO L231 Difference]: Finished difference. Result has 36 places, 22 transitions, 91 flow [2023-08-26 12:08:55,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=91, PETRI_PLACES=36, PETRI_TRANSITIONS=22} [2023-08-26 12:08:55,386 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2023-08-26 12:08:55,386 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 22 transitions, 91 flow [2023-08-26 12:08:55,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:55,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:08:55,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:08:55,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 12:08:55,386 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [P1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-26 12:08:55,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:08:55,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1946269583, now seen corresponding path program 1 times [2023-08-26 12:08:55,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:08:55,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567422611] [2023-08-26 12:08:55,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:08:55,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:08:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:08:55,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:08:55,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:08:55,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567422611] [2023-08-26 12:08:55,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567422611] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:08:55,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:08:55,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 12:08:55,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295347312] [2023-08-26 12:08:55,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:08:55,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 12:08:55,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:08:55,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 12:08:55,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-26 12:08:55,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 202 [2023-08-26 12:08:55,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 22 transitions, 91 flow. Second operand has 8 states, 8 states have (on average 76.75) internal successors, (614), 8 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:55,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:08:55,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 202 [2023-08-26 12:08:55,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:08:56,117 INFO L124 PetriNetUnfolderBase]: 81/199 cut-off events. [2023-08-26 12:08:56,117 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2023-08-26 12:08:56,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 199 events. 81/199 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 772 event pairs, 19 based on Foata normal form. 5/203 useless extension candidates. Maximal degree in co-relation 596. Up to 86 conditions per place. [2023-08-26 12:08:56,118 INFO L140 encePairwiseOnDemand]: 192/202 looper letters, 34 selfloop transitions, 18 changer transitions 4/57 dead transitions. [2023-08-26 12:08:56,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 57 transitions, 350 flow [2023-08-26 12:08:56,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 12:08:56,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 12:08:56,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 577 transitions. [2023-08-26 12:08:56,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40806223479490805 [2023-08-26 12:08:56,121 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 577 transitions. [2023-08-26 12:08:56,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 577 transitions. [2023-08-26 12:08:56,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:08:56,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 577 transitions. [2023-08-26 12:08:56,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.42857142857143) internal successors, (577), 7 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:56,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 202.0) internal successors, (1616), 8 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:56,124 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 202.0) internal successors, (1616), 8 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:56,124 INFO L175 Difference]: Start difference. First operand has 36 places, 22 transitions, 91 flow. Second operand 7 states and 577 transitions. [2023-08-26 12:08:56,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 57 transitions, 350 flow [2023-08-26 12:08:56,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 57 transitions, 329 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-26 12:08:56,126 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 219 flow [2023-08-26 12:08:56,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=219, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-08-26 12:08:56,126 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2023-08-26 12:08:56,127 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 219 flow [2023-08-26 12:08:56,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.75) internal successors, (614), 8 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:56,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:08:56,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:08:56,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 12:08:56,127 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [P1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-26 12:08:56,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:08:56,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1822848875, now seen corresponding path program 2 times [2023-08-26 12:08:56,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:08:56,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273240867] [2023-08-26 12:08:56,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:08:56,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:08:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:08:56,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:08:56,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:08:56,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273240867] [2023-08-26 12:08:56,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273240867] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:08:56,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:08:56,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 12:08:56,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252572857] [2023-08-26 12:08:56,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:08:56,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 12:08:56,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:08:56,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 12:08:56,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 12:08:56,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 202 [2023-08-26 12:08:56,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:56,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:08:56,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 202 [2023-08-26 12:08:56,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:08:56,345 INFO L124 PetriNetUnfolderBase]: 51/146 cut-off events. [2023-08-26 12:08:56,345 INFO L125 PetriNetUnfolderBase]: For 284/284 co-relation queries the response was YES. [2023-08-26 12:08:56,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 507 conditions, 146 events. 51/146 cut-off events. For 284/284 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 526 event pairs, 9 based on Foata normal form. 19/164 useless extension candidates. Maximal degree in co-relation 494. Up to 67 conditions per place. [2023-08-26 12:08:56,346 INFO L140 encePairwiseOnDemand]: 197/202 looper letters, 35 selfloop transitions, 5 changer transitions 22/63 dead transitions. [2023-08-26 12:08:56,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 450 flow [2023-08-26 12:08:56,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 12:08:56,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 12:08:56,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 504 transitions. [2023-08-26 12:08:56,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4158415841584158 [2023-08-26 12:08:56,348 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 504 transitions. [2023-08-26 12:08:56,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 504 transitions. [2023-08-26 12:08:56,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:08:56,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 504 transitions. [2023-08-26 12:08:56,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:56,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 202.0) internal successors, (1414), 7 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:56,350 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 202.0) internal successors, (1414), 7 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:56,350 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 219 flow. Second operand 6 states and 504 transitions. [2023-08-26 12:08:56,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 450 flow [2023-08-26 12:08:56,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 424 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-26 12:08:56,354 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 192 flow [2023-08-26 12:08:56,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2023-08-26 12:08:56,356 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2023-08-26 12:08:56,356 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 192 flow [2023-08-26 12:08:56,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:56,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:08:56,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:08:56,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 12:08:56,357 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [P1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-26 12:08:56,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:08:56,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1088196395, now seen corresponding path program 1 times [2023-08-26 12:08:56,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:08:56,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486638325] [2023-08-26 12:08:56,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:08:56,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:08:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:08:56,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:08:56,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:08:56,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486638325] [2023-08-26 12:08:56,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486638325] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:08:56,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:08:56,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 12:08:56,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255522437] [2023-08-26 12:08:56,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:08:56,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 12:08:56,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:08:56,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 12:08:56,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 12:08:56,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 202 [2023-08-26 12:08:56,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:56,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:08:56,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 202 [2023-08-26 12:08:56,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:08:56,883 INFO L124 PetriNetUnfolderBase]: 44/126 cut-off events. [2023-08-26 12:08:56,884 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2023-08-26 12:08:56,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 126 events. 44/126 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 416 event pairs, 2 based on Foata normal form. 1/127 useless extension candidates. Maximal degree in co-relation 438. Up to 62 conditions per place. [2023-08-26 12:08:56,884 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 23 selfloop transitions, 3 changer transitions 32/58 dead transitions. [2023-08-26 12:08:56,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 58 transitions, 434 flow [2023-08-26 12:08:56,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 12:08:56,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 12:08:56,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 463 transitions. [2023-08-26 12:08:56,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.382013201320132 [2023-08-26 12:08:56,886 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 463 transitions. [2023-08-26 12:08:56,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 463 transitions. [2023-08-26 12:08:56,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:08:56,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 463 transitions. [2023-08-26 12:08:56,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.16666666666667) internal successors, (463), 6 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:56,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 202.0) internal successors, (1414), 7 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:56,888 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 202.0) internal successors, (1414), 7 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:56,889 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 192 flow. Second operand 6 states and 463 transitions. [2023-08-26 12:08:56,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 58 transitions, 434 flow [2023-08-26 12:08:56,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 383 flow, removed 19 selfloop flow, removed 6 redundant places. [2023-08-26 12:08:56,890 INFO L231 Difference]: Finished difference. Result has 48 places, 24 transitions, 119 flow [2023-08-26 12:08:56,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=24} [2023-08-26 12:08:56,891 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2023-08-26 12:08:56,891 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 24 transitions, 119 flow [2023-08-26 12:08:56,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:56,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:08:56,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:08:56,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 12:08:56,891 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [P1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-26 12:08:56,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:08:56,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1111047739, now seen corresponding path program 2 times [2023-08-26 12:08:56,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:08:56,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935527807] [2023-08-26 12:08:56,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:08:56,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:08:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:08:57,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:08:57,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:08:57,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935527807] [2023-08-26 12:08:57,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935527807] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:08:57,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:08:57,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-26 12:08:57,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492583707] [2023-08-26 12:08:57,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:08:57,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 12:08:57,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:08:57,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 12:08:57,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-26 12:08:57,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 202 [2023-08-26 12:08:57,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 24 transitions, 119 flow. Second operand has 9 states, 9 states have (on average 75.88888888888889) internal successors, (683), 9 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:57,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:08:57,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 202 [2023-08-26 12:08:57,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:08:58,029 INFO L124 PetriNetUnfolderBase]: 11/48 cut-off events. [2023-08-26 12:08:58,030 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-08-26 12:08:58,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 48 events. 11/48 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 5 based on Foata normal form. 1/49 useless extension candidates. Maximal degree in co-relation 168. Up to 19 conditions per place. [2023-08-26 12:08:58,030 INFO L140 encePairwiseOnDemand]: 198/202 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2023-08-26 12:08:58,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 24 transitions, 167 flow [2023-08-26 12:08:58,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 12:08:58,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 12:08:58,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 388 transitions. [2023-08-26 12:08:58,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38415841584158417 [2023-08-26 12:08:58,031 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 388 transitions. [2023-08-26 12:08:58,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 388 transitions. [2023-08-26 12:08:58,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:08:58,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 388 transitions. [2023-08-26 12:08:58,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:58,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:58,034 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:58,034 INFO L175 Difference]: Start difference. First operand has 48 places, 24 transitions, 119 flow. Second operand 5 states and 388 transitions. [2023-08-26 12:08:58,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 24 transitions, 167 flow [2023-08-26 12:08:58,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 24 transitions, 153 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-26 12:08:58,035 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-08-26 12:08:58,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-08-26 12:08:58,036 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2023-08-26 12:08:58,036 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-08-26 12:08:58,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 75.88888888888889) internal successors, (683), 9 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:08:58,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONASSERT (8 of 9 remaining) [2023-08-26 12:08:58,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-08-26 12:08:58,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-08-26 12:08:58,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-08-26 12:08:58,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2023-08-26 12:08:58,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (3 of 9 remaining) [2023-08-26 12:08:58,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-08-26 12:08:58,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 9 remaining) [2023-08-26 12:08:58,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONASSERT (0 of 9 remaining) [2023-08-26 12:08:58,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 12:08:58,039 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1] [2023-08-26 12:08:58,042 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 12:08:58,042 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 12:08:58,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:08:58 BasicIcfg [2023-08-26 12:08:58,044 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 12:08:58,044 INFO L158 Benchmark]: Toolchain (without parser) took 10347.80ms. Allocated memory was 379.6MB in the beginning and 887.1MB in the end (delta: 507.5MB). Free memory was 353.0MB in the beginning and 573.0MB in the end (delta: -220.0MB). Peak memory consumption was 290.6MB. Max. memory is 16.0GB. [2023-08-26 12:08:58,045 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 379.6MB. Free memory is still 356.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:08:58,045 INFO L158 Benchmark]: CACSL2BoogieTranslator took 503.23ms. Allocated memory is still 379.6MB. Free memory was 353.0MB in the beginning and 326.4MB in the end (delta: 26.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-26 12:08:58,045 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.15ms. Allocated memory is still 379.6MB. Free memory was 326.4MB in the beginning and 322.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 12:08:58,045 INFO L158 Benchmark]: Boogie Preprocessor took 50.47ms. Allocated memory is still 379.6MB. Free memory was 322.9MB in the beginning and 320.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:08:58,045 INFO L158 Benchmark]: RCFGBuilder took 603.55ms. Allocated memory is still 379.6MB. Free memory was 320.8MB in the beginning and 268.4MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.0GB. [2023-08-26 12:08:58,045 INFO L158 Benchmark]: TraceAbstraction took 9122.30ms. Allocated memory was 379.6MB in the beginning and 887.1MB in the end (delta: 507.5MB). Free memory was 267.7MB in the beginning and 573.0MB in the end (delta: -305.3MB). Peak memory consumption was 204.6MB. Max. memory is 16.0GB. [2023-08-26 12:08:58,046 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 379.6MB. Free memory is still 356.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 503.23ms. Allocated memory is still 379.6MB. Free memory was 353.0MB in the beginning and 326.4MB in the end (delta: 26.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 62.15ms. Allocated memory is still 379.6MB. Free memory was 326.4MB in the beginning and 322.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 50.47ms. Allocated memory is still 379.6MB. Free memory was 322.9MB in the beginning and 320.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 603.55ms. Allocated memory is still 379.6MB. Free memory was 320.8MB in the beginning and 268.4MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.0GB. * TraceAbstraction took 9122.30ms. Allocated memory was 379.6MB in the beginning and 887.1MB in the end (delta: 507.5MB). Free memory was 267.7MB in the beginning and 573.0MB in the end (delta: -305.3MB). Peak memory consumption was 204.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 102 PlacesBefore, 31 PlacesAfterwards, 98 TransitionsBefore, 24 TransitionsAfterwards, 1420 CoEnabledTransitionPairs, 7 FixpointIterations, 42 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 3 ChoiceCompositions, 102 TotalNumberOfCompositions, 4942 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1454, independent: 1247, independent conditional: 0, independent unconditional: 1247, dependent: 207, dependent conditional: 0, dependent unconditional: 207, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 844, independent: 792, independent conditional: 0, independent unconditional: 792, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1454, independent: 455, independent conditional: 0, independent unconditional: 455, dependent: 155, dependent conditional: 0, dependent unconditional: 155, unknown: 844, unknown conditional: 0, unknown unconditional: 844] , Statistics on independence cache: Total cache size (in pairs): 52, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 17]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 120 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 110 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 110 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 689 IncrementalHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 2 mSDtfsCounter, 689 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=219occurred in iteration=7, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 1282 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 12:08:58,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...