/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.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/safe026_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 15:23:22,068 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 15:23:22,111 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 15:23:22,114 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 15:23:22,115 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 15:23:22,141 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 15:23:22,142 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 15:23:22,142 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 15:23:22,143 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 15:23:22,143 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 15:23:22,143 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 15:23:22,143 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 15:23:22,144 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 15:23:22,145 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 15:23:22,145 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 15:23:22,145 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 15:23:22,146 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 15:23:22,146 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 15:23:22,146 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 15:23:22,146 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 15:23:22,146 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 15:23:22,149 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 15:23:22,149 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 15:23:22,149 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 15:23:22,150 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 15:23:22,150 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 15:23:22,150 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 15:23:22,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:23:22,150 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 15:23:22,150 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 15:23:22,151 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 15:23:22,151 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 15:23:22,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 15:23:22,151 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 15:23:22,151 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 15:23:22,151 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 15:23:22,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 15:23:22,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 15:23:22,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 15:23:22,414 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 15:23:22,414 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 15:23:22,415 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.i [2023-08-26 15:23:23,374 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 15:23:23,586 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 15:23:23,586 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.i [2023-08-26 15:23:23,599 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e58e5214/5a2e00b3a7dd403db231318f0b330e3f/FLAGbe009b3df [2023-08-26 15:23:23,613 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e58e5214/5a2e00b3a7dd403db231318f0b330e3f [2023-08-26 15:23:23,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 15:23:23,619 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 15:23:23,621 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 15:23:23,621 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 15:23:23,623 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 15:23:23,623 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:23:23" (1/1) ... [2023-08-26 15:23:23,624 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41f3b025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:23:23, skipping insertion in model container [2023-08-26 15:23:23,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:23:23" (1/1) ... [2023-08-26 15:23:23,664 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 15:23:23,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:23:23,924 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 15:23:23,951 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 15:23:23,952 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 15:23:23,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:23:23,991 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 15:23:23,991 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 15:23:23,996 INFO L206 MainTranslator]: Completed translation [2023-08-26 15:23:23,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:23:23 WrapperNode [2023-08-26 15:23:23,998 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 15:23:23,998 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 15:23:23,999 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 15:23:23,999 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 15:23:24,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:23:23" (1/1) ... [2023-08-26 15:23:24,026 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:23:23" (1/1) ... [2023-08-26 15:23:24,038 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2023-08-26 15:23:24,038 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 15:23:24,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 15:23:24,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 15:23:24,039 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 15:23:24,044 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:23:23" (1/1) ... [2023-08-26 15:23:24,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:23:23" (1/1) ... [2023-08-26 15:23:24,045 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:23:23" (1/1) ... [2023-08-26 15:23:24,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:23:23" (1/1) ... [2023-08-26 15:23:24,049 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:23:23" (1/1) ... [2023-08-26 15:23:24,050 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:23:23" (1/1) ... [2023-08-26 15:23:24,051 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:23:23" (1/1) ... [2023-08-26 15:23:24,052 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:23:23" (1/1) ... [2023-08-26 15:23:24,053 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 15:23:24,054 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 15:23:24,054 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 15:23:24,054 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 15:23:24,055 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:23:23" (1/1) ... [2023-08-26 15:23:24,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:23:24,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 15:23:24,073 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 15:23:24,076 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 15:23:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 15:23:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 15:23:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 15:23:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 15:23:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 15:23:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-26 15:23:24,097 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-26 15:23:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-26 15:23:24,097 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-26 15:23:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-26 15:23:24,097 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-26 15:23:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 15:23:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 15:23:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 15:23:24,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 15:23:24,099 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 15:23:24,198 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 15:23:24,199 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 15:23:24,335 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 15:23:24,340 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 15:23:24,340 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 15:23:24,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:23:24 BoogieIcfgContainer [2023-08-26 15:23:24,341 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 15:23:24,343 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 15:23:24,343 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 15:23:24,345 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 15:23:24,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:23:23" (1/3) ... [2023-08-26 15:23:24,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32eaefbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:23:24, skipping insertion in model container [2023-08-26 15:23:24,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:23:23" (2/3) ... [2023-08-26 15:23:24,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32eaefbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:23:24, skipping insertion in model container [2023-08-26 15:23:24,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:23:24" (3/3) ... [2023-08-26 15:23:24,346 INFO L112 eAbstractionObserver]: Analyzing ICFG safe026_tso.i [2023-08-26 15:23:24,358 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 15:23:24,358 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-26 15:23:24,358 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 15:23:24,417 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 15:23:24,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 93 transitions, 201 flow [2023-08-26 15:23:24,502 INFO L124 PetriNetUnfolderBase]: 3/90 cut-off events. [2023-08-26 15:23:24,502 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:23:24,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 3/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-08-26 15:23:24,505 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 93 transitions, 201 flow [2023-08-26 15:23:24,510 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 76 transitions, 161 flow [2023-08-26 15:23:24,512 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:23:24,521 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 76 transitions, 161 flow [2023-08-26 15:23:24,523 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 76 transitions, 161 flow [2023-08-26 15:23:24,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 76 transitions, 161 flow [2023-08-26 15:23:24,549 INFO L124 PetriNetUnfolderBase]: 1/76 cut-off events. [2023-08-26 15:23:24,550 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:23:24,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 1/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-08-26 15:23:24,552 INFO L119 LiptonReduction]: Number of co-enabled transitions 1110 [2023-08-26 15:23:26,645 INFO L134 LiptonReduction]: Checked pairs total: 2139 [2023-08-26 15:23:26,645 INFO L136 LiptonReduction]: Total number of compositions: 76 [2023-08-26 15:23:26,654 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 15:23:26,657 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;@61a99f82, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:23:26,658 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-26 15:23:26,658 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:23:26,658 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 15:23:26,659 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:23:26,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:23:26,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 15:23:26,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:23:26,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:23:26,662 INFO L85 PathProgramCache]: Analyzing trace with hash 324, now seen corresponding path program 1 times [2023-08-26 15:23:26,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:23:26,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719779875] [2023-08-26 15:23:26,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:23:26,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:23:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:23:26,733 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 15:23:26,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:23:26,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719779875] [2023-08-26 15:23:26,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719779875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:23:26,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:23:26,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 15:23:26,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788417221] [2023-08-26 15:23:26,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:23:26,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 15:23:26,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:23:26,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 15:23:26,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 15:23:26,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 169 [2023-08-26 15:23:26,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 55 flow. Second operand has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 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 15:23:26,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:23:26,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 169 [2023-08-26 15:23:26,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:23:26,812 INFO L124 PetriNetUnfolderBase]: 164/281 cut-off events. [2023-08-26 15:23:26,812 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-26 15:23:26,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 281 events. 164/281 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1055 event pairs, 164 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 571. Up to 271 conditions per place. [2023-08-26 15:23:26,819 INFO L140 encePairwiseOnDemand]: 162/169 looper letters, 14 selfloop transitions, 0 changer transitions 0/16 dead transitions. [2023-08-26 15:23:26,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 16 transitions, 69 flow [2023-08-26 15:23:26,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 15:23:26,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 15:23:26,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 193 transitions. [2023-08-26 15:23:26,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5710059171597633 [2023-08-26 15:23:26,830 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 193 transitions. [2023-08-26 15:23:26,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 193 transitions. [2023-08-26 15:23:26,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:23:26,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 193 transitions. [2023-08-26 15:23:26,837 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 15:23:26,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 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 15:23:26,842 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 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 15:23:26,843 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 55 flow. Second operand 2 states and 193 transitions. [2023-08-26 15:23:26,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 16 transitions, 69 flow [2023-08-26 15:23:26,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 16 transitions, 66 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 15:23:26,846 INFO L231 Difference]: Finished difference. Result has 24 places, 16 transitions, 38 flow [2023-08-26 15:23:26,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=38, PETRI_PLACES=24, PETRI_TRANSITIONS=16} [2023-08-26 15:23:26,850 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -8 predicate places. [2023-08-26 15:23:26,850 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 16 transitions, 38 flow [2023-08-26 15:23:26,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 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 15:23:26,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:23:26,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:23:26,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 15:23:26,851 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:23:26,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:23:26,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1889499717, now seen corresponding path program 1 times [2023-08-26 15:23:26,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:23:26,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369024162] [2023-08-26 15:23:26,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:23:26,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:23:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:23:27,129 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 15:23:27,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:23:27,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369024162] [2023-08-26 15:23:27,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369024162] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:23:27,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:23:27,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 15:23:27,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360744320] [2023-08-26 15:23:27,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:23:27,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:23:27,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:23:27,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:23:27,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:23:27,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 169 [2023-08-26 15:23:27,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 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 15:23:27,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:23:27,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 169 [2023-08-26 15:23:27,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:23:27,191 INFO L124 PetriNetUnfolderBase]: 214/351 cut-off events. [2023-08-26 15:23:27,191 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:23:27,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 351 events. 214/351 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1254 event pairs, 80 based on Foata normal form. 6/354 useless extension candidates. Maximal degree in co-relation 734. Up to 316 conditions per place. [2023-08-26 15:23:27,196 INFO L140 encePairwiseOnDemand]: 165/169 looper letters, 22 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2023-08-26 15:23:27,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 112 flow [2023-08-26 15:23:27,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:23:27,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:23:27,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2023-08-26 15:23:27,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5305719921104537 [2023-08-26 15:23:27,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2023-08-26 15:23:27,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2023-08-26 15:23:27,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:23:27,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2023-08-26 15:23:27,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 15:23:27,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 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 15:23:27,205 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 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 15:23:27,205 INFO L175 Difference]: Start difference. First operand has 24 places, 16 transitions, 38 flow. Second operand 3 states and 269 transitions. [2023-08-26 15:23:27,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 112 flow [2023-08-26 15:23:27,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 26 transitions, 112 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 15:23:27,208 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 57 flow [2023-08-26 15:23:27,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-08-26 15:23:27,209 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -5 predicate places. [2023-08-26 15:23:27,209 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 57 flow [2023-08-26 15:23:27,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 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 15:23:27,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:23:27,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:23:27,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 15:23:27,215 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:23:27,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:23:27,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1555052394, now seen corresponding path program 1 times [2023-08-26 15:23:27,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:23:27,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138783275] [2023-08-26 15:23:27,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:23:27,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:23:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:23:27,381 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 15:23:27,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:23:27,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138783275] [2023-08-26 15:23:27,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138783275] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:23:27,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:23:27,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 15:23:27,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832896250] [2023-08-26 15:23:27,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:23:27,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:23:27,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:23:27,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:23:27,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:23:27,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2023-08-26 15:23:27,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 57 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 15:23:27,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:23:27,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2023-08-26 15:23:27,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:23:27,427 INFO L124 PetriNetUnfolderBase]: 165/304 cut-off events. [2023-08-26 15:23:27,427 INFO L125 PetriNetUnfolderBase]: For 49/50 co-relation queries the response was YES. [2023-08-26 15:23:27,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 304 events. 165/304 cut-off events. For 49/50 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1198 event pairs, 60 based on Foata normal form. 10/313 useless extension candidates. Maximal degree in co-relation 691. Up to 175 conditions per place. [2023-08-26 15:23:27,429 INFO L140 encePairwiseOnDemand]: 166/169 looper letters, 19 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-08-26 15:23:27,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 24 transitions, 116 flow [2023-08-26 15:23:27,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:23:27,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:23:27,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2023-08-26 15:23:27,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5305719921104537 [2023-08-26 15:23:27,431 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2023-08-26 15:23:27,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2023-08-26 15:23:27,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:23:27,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2023-08-26 15:23:27,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 15:23:27,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 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 15:23:27,433 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 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 15:23:27,433 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 57 flow. Second operand 3 states and 269 transitions. [2023-08-26 15:23:27,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 24 transitions, 116 flow [2023-08-26 15:23:27,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 112 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 15:23:27,434 INFO L231 Difference]: Finished difference. Result has 29 places, 18 transitions, 62 flow [2023-08-26 15:23:27,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, 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=62, PETRI_PLACES=29, PETRI_TRANSITIONS=18} [2023-08-26 15:23:27,435 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2023-08-26 15:23:27,435 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 18 transitions, 62 flow [2023-08-26 15:23:27,435 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 15:23:27,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:23:27,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:23:27,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 15:23:27,438 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:23:27,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:23:27,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2126187418, now seen corresponding path program 1 times [2023-08-26 15:23:27,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:23:27,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520752642] [2023-08-26 15:23:27,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:23:27,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:23:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:23:27,568 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 15:23:27,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:23:27,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520752642] [2023-08-26 15:23:27,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520752642] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:23:27,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:23:27,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 15:23:27,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789082539] [2023-08-26 15:23:27,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:23:27,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 15:23:27,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:23:27,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 15:23:27,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 15:23:27,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 169 [2023-08-26 15:23:27,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 18 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 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 15:23:27,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:23:27,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 169 [2023-08-26 15:23:27,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:23:27,623 INFO L124 PetriNetUnfolderBase]: 164/305 cut-off events. [2023-08-26 15:23:27,624 INFO L125 PetriNetUnfolderBase]: For 139/140 co-relation queries the response was YES. [2023-08-26 15:23:27,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 305 events. 164/305 cut-off events. For 139/140 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1215 event pairs, 37 based on Foata normal form. 20/323 useless extension candidates. Maximal degree in co-relation 766. Up to 178 conditions per place. [2023-08-26 15:23:27,625 INFO L140 encePairwiseOnDemand]: 163/169 looper letters, 30 selfloop transitions, 7 changer transitions 4/44 dead transitions. [2023-08-26 15:23:27,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 44 transitions, 221 flow [2023-08-26 15:23:27,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 15:23:27,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 15:23:27,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 434 transitions. [2023-08-26 15:23:27,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136094674556213 [2023-08-26 15:23:27,626 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 434 transitions. [2023-08-26 15:23:27,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 434 transitions. [2023-08-26 15:23:27,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:23:27,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 434 transitions. [2023-08-26 15:23:27,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 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 15:23:27,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 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 15:23:27,629 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 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 15:23:27,629 INFO L175 Difference]: Start difference. First operand has 29 places, 18 transitions, 62 flow. Second operand 5 states and 434 transitions. [2023-08-26 15:23:27,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 44 transitions, 221 flow [2023-08-26 15:23:27,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 44 transitions, 211 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 15:23:27,630 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 112 flow [2023-08-26 15:23:27,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-08-26 15:23:27,631 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-08-26 15:23:27,631 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 112 flow [2023-08-26 15:23:27,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 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 15:23:27,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:23:27,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:23:27,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 15:23:27,632 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:23:27,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:23:27,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1486621815, now seen corresponding path program 1 times [2023-08-26 15:23:27,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:23:27,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41116757] [2023-08-26 15:23:27,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:23:27,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:23:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:23:27,709 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 15:23:27,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:23:27,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41116757] [2023-08-26 15:23:27,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41116757] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:23:27,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:23:27,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 15:23:27,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420606751] [2023-08-26 15:23:27,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:23:27,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 15:23:27,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:23:27,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 15:23:27,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 15:23:27,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 169 [2023-08-26 15:23:27,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 81.2) internal successors, (406), 5 states have internal predecessors, (406), 0 states have call successors, (0), 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 15:23:27,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:23:27,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 169 [2023-08-26 15:23:27,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:23:27,787 INFO L124 PetriNetUnfolderBase]: 136/272 cut-off events. [2023-08-26 15:23:27,787 INFO L125 PetriNetUnfolderBase]: For 298/337 co-relation queries the response was YES. [2023-08-26 15:23:27,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 272 events. 136/272 cut-off events. For 298/337 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1122 event pairs, 20 based on Foata normal form. 42/312 useless extension candidates. Maximal degree in co-relation 897. Up to 118 conditions per place. [2023-08-26 15:23:27,789 INFO L140 encePairwiseOnDemand]: 163/169 looper letters, 34 selfloop transitions, 13 changer transitions 8/58 dead transitions. [2023-08-26 15:23:27,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 58 transitions, 355 flow [2023-08-26 15:23:27,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 15:23:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 15:23:27,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 606 transitions. [2023-08-26 15:23:27,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5122569737954353 [2023-08-26 15:23:27,790 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 606 transitions. [2023-08-26 15:23:27,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 606 transitions. [2023-08-26 15:23:27,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:23:27,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 606 transitions. [2023-08-26 15:23:27,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 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 15:23:27,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 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 15:23:27,794 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 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 15:23:27,794 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 112 flow. Second operand 7 states and 606 transitions. [2023-08-26 15:23:27,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 58 transitions, 355 flow [2023-08-26 15:23:27,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 58 transitions, 351 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 15:23:27,797 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 196 flow [2023-08-26 15:23:27,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=196, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2023-08-26 15:23:27,799 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2023-08-26 15:23:27,799 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 196 flow [2023-08-26 15:23:27,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.2) internal successors, (406), 5 states have internal predecessors, (406), 0 states have call successors, (0), 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 15:23:27,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:23:27,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:23:27,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 15:23:27,800 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:23:27,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:23:27,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1625361484, now seen corresponding path program 1 times [2023-08-26 15:23:27,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:23:27,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141052432] [2023-08-26 15:23:27,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:23:27,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:23:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:23:27,896 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 15:23:27,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:23:27,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141052432] [2023-08-26 15:23:27,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141052432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:23:27,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:23:27,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 15:23:27,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904105427] [2023-08-26 15:23:27,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:23:27,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 15:23:27,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:23:27,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 15:23:27,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-26 15:23:27,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 169 [2023-08-26 15:23:27,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 196 flow. Second operand has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 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 15:23:27,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:23:27,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 169 [2023-08-26 15:23:27,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:23:27,975 INFO L124 PetriNetUnfolderBase]: 119/246 cut-off events. [2023-08-26 15:23:27,976 INFO L125 PetriNetUnfolderBase]: For 534/571 co-relation queries the response was YES. [2023-08-26 15:23:27,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 246 events. 119/246 cut-off events. For 534/571 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 997 event pairs, 18 based on Foata normal form. 29/273 useless extension candidates. Maximal degree in co-relation 930. Up to 103 conditions per place. [2023-08-26 15:23:27,977 INFO L140 encePairwiseOnDemand]: 163/169 looper letters, 31 selfloop transitions, 17 changer transitions 7/58 dead transitions. [2023-08-26 15:23:27,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 413 flow [2023-08-26 15:23:27,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 15:23:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 15:23:27,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 764 transitions. [2023-08-26 15:23:27,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502301117685733 [2023-08-26 15:23:27,979 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 764 transitions. [2023-08-26 15:23:27,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 764 transitions. [2023-08-26 15:23:27,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:23:27,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 764 transitions. [2023-08-26 15:23:27,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 84.88888888888889) internal successors, (764), 9 states have internal predecessors, (764), 0 states have call successors, (0), 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 15:23:27,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 169.0) internal successors, (1690), 10 states have internal predecessors, (1690), 0 states have call successors, (0), 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 15:23:27,983 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 169.0) internal successors, (1690), 10 states have internal predecessors, (1690), 0 states have call successors, (0), 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 15:23:27,983 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 196 flow. Second operand 9 states and 764 transitions. [2023-08-26 15:23:27,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 413 flow [2023-08-26 15:23:27,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 58 transitions, 383 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-08-26 15:23:27,987 INFO L231 Difference]: Finished difference. Result has 51 places, 31 transitions, 222 flow [2023-08-26 15:23:27,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=222, PETRI_PLACES=51, PETRI_TRANSITIONS=31} [2023-08-26 15:23:27,988 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 19 predicate places. [2023-08-26 15:23:27,988 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 31 transitions, 222 flow [2023-08-26 15:23:27,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 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 15:23:27,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:23:27,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:23:27,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 15:23:27,988 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:23:27,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:23:27,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1784869895, now seen corresponding path program 1 times [2023-08-26 15:23:27,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:23:27,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277736206] [2023-08-26 15:23:27,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:23:27,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:23:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:23:28,084 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 15:23:28,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:23:28,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277736206] [2023-08-26 15:23:28,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277736206] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:23:28,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:23:28,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 15:23:28,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015976322] [2023-08-26 15:23:28,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:23:28,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 15:23:28,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:23:28,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 15:23:28,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 15:23:28,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 169 [2023-08-26 15:23:28,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 31 transitions, 222 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 15:23:28,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:23:28,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 169 [2023-08-26 15:23:28,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:23:28,164 INFO L124 PetriNetUnfolderBase]: 257/484 cut-off events. [2023-08-26 15:23:28,165 INFO L125 PetriNetUnfolderBase]: For 1095/1095 co-relation queries the response was YES. [2023-08-26 15:23:28,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 484 events. 257/484 cut-off events. For 1095/1095 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2228 event pairs, 24 based on Foata normal form. 1/485 useless extension candidates. Maximal degree in co-relation 1857. Up to 212 conditions per place. [2023-08-26 15:23:28,166 INFO L140 encePairwiseOnDemand]: 162/169 looper letters, 28 selfloop transitions, 8 changer transitions 44/80 dead transitions. [2023-08-26 15:23:28,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 704 flow [2023-08-26 15:23:28,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 15:23:28,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 15:23:28,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2023-08-26 15:23:28,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5005917159763313 [2023-08-26 15:23:28,168 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2023-08-26 15:23:28,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2023-08-26 15:23:28,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:23:28,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2023-08-26 15:23:28,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 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 15:23:28,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 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 15:23:28,171 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 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 15:23:28,171 INFO L175 Difference]: Start difference. First operand has 51 places, 31 transitions, 222 flow. Second operand 5 states and 423 transitions. [2023-08-26 15:23:28,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 80 transitions, 704 flow [2023-08-26 15:23:28,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 80 transitions, 569 flow, removed 28 selfloop flow, removed 8 redundant places. [2023-08-26 15:23:28,179 INFO L231 Difference]: Finished difference. Result has 48 places, 26 transitions, 151 flow [2023-08-26 15:23:28,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=48, PETRI_TRANSITIONS=26} [2023-08-26 15:23:28,179 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 16 predicate places. [2023-08-26 15:23:28,179 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 26 transitions, 151 flow [2023-08-26 15:23:28,179 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 15:23:28,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:23:28,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:23:28,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 15:23:28,181 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:23:28,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:23:28,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1442599409, now seen corresponding path program 2 times [2023-08-26 15:23:28,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:23:28,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310465807] [2023-08-26 15:23:28,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:23:28,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:23:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:23:28,276 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 15:23:28,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:23:28,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310465807] [2023-08-26 15:23:28,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310465807] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:23:28,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:23:28,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 15:23:28,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865713911] [2023-08-26 15:23:28,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:23:28,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 15:23:28,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:23:28,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 15:23:28,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 15:23:28,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 169 [2023-08-26 15:23:28,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 26 transitions, 151 flow. Second operand has 4 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 15:23:28,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:23:28,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 169 [2023-08-26 15:23:28,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:23:28,319 INFO L124 PetriNetUnfolderBase]: 57/142 cut-off events. [2023-08-26 15:23:28,319 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2023-08-26 15:23:28,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565 conditions, 142 events. 57/142 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 460 event pairs, 10 based on Foata normal form. 1/143 useless extension candidates. Maximal degree in co-relation 550. Up to 80 conditions per place. [2023-08-26 15:23:28,320 INFO L140 encePairwiseOnDemand]: 166/169 looper letters, 21 selfloop transitions, 1 changer transitions 20/43 dead transitions. [2023-08-26 15:23:28,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 43 transitions, 319 flow [2023-08-26 15:23:28,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 15:23:28,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 15:23:28,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2023-08-26 15:23:28,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207100591715976 [2023-08-26 15:23:28,321 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 352 transitions. [2023-08-26 15:23:28,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 352 transitions. [2023-08-26 15:23:28,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:23:28,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 352 transitions. [2023-08-26 15:23:28,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 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 15:23:28,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 169.0) internal successors, (845), 5 states have internal predecessors, (845), 0 states have call successors, (0), 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 15:23:28,323 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 169.0) internal successors, (845), 5 states have internal predecessors, (845), 0 states have call successors, (0), 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 15:23:28,323 INFO L175 Difference]: Start difference. First operand has 48 places, 26 transitions, 151 flow. Second operand 4 states and 352 transitions. [2023-08-26 15:23:28,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 43 transitions, 319 flow [2023-08-26 15:23:28,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 43 transitions, 301 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-08-26 15:23:28,325 INFO L231 Difference]: Finished difference. Result has 42 places, 22 transitions, 118 flow [2023-08-26 15:23:28,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=42, PETRI_TRANSITIONS=22} [2023-08-26 15:23:28,326 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2023-08-26 15:23:28,326 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 22 transitions, 118 flow [2023-08-26 15:23:28,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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 15:23:28,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:23:28,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:23:28,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 15:23:28,327 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:23:28,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:23:28,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1632313955, now seen corresponding path program 3 times [2023-08-26 15:23:28,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:23:28,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20298299] [2023-08-26 15:23:28,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:23:28,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:23:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:23:28,444 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 15:23:28,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:23:28,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20298299] [2023-08-26 15:23:28,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20298299] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:23:28,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:23:28,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 15:23:28,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392014759] [2023-08-26 15:23:28,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:23:28,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 15:23:28,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:23:28,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 15:23:28,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 15:23:28,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 169 [2023-08-26 15:23:28,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 22 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 81.2) internal successors, (406), 5 states have internal predecessors, (406), 0 states have call successors, (0), 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 15:23:28,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:23:28,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 169 [2023-08-26 15:23:28,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:23:28,469 INFO L124 PetriNetUnfolderBase]: 13/44 cut-off events. [2023-08-26 15:23:28,469 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-08-26 15:23:28,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 44 events. 13/44 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 82 event pairs, 4 based on Foata normal form. 1/45 useless extension candidates. Maximal degree in co-relation 178. Up to 31 conditions per place. [2023-08-26 15:23:28,469 INFO L140 encePairwiseOnDemand]: 166/169 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-08-26 15:23:28,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 22 transitions, 162 flow [2023-08-26 15:23:28,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 15:23:28,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 15:23:28,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2023-08-26 15:23:28,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48668639053254437 [2023-08-26 15:23:28,470 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 329 transitions. [2023-08-26 15:23:28,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 329 transitions. [2023-08-26 15:23:28,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:23:28,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 329 transitions. [2023-08-26 15:23:28,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 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 15:23:28,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 169.0) internal successors, (845), 5 states have internal predecessors, (845), 0 states have call successors, (0), 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 15:23:28,472 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 169.0) internal successors, (845), 5 states have internal predecessors, (845), 0 states have call successors, (0), 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 15:23:28,472 INFO L175 Difference]: Start difference. First operand has 42 places, 22 transitions, 118 flow. Second operand 4 states and 329 transitions. [2023-08-26 15:23:28,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 22 transitions, 162 flow [2023-08-26 15:23:28,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 22 transitions, 143 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-26 15:23:28,473 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-08-26 15:23:28,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-08-26 15:23:28,474 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2023-08-26 15:23:28,474 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-08-26 15:23:28,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.2) internal successors, (406), 5 states have internal predecessors, (406), 0 states have call successors, (0), 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 15:23:28,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-08-26 15:23:28,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-08-26 15:23:28,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-08-26 15:23:28,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-08-26 15:23:28,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-08-26 15:23:28,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2023-08-26 15:23:28,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (3 of 10 remaining) [2023-08-26 15:23:28,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 10 remaining) [2023-08-26 15:23:28,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2023-08-26 15:23:28,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-08-26 15:23:28,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 15:23:28,479 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2023-08-26 15:23:28,481 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 15:23:28,481 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 15:23:28,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:23:28 BasicIcfg [2023-08-26 15:23:28,484 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 15:23:28,484 INFO L158 Benchmark]: Toolchain (without parser) took 4865.61ms. Allocated memory was 404.8MB in the beginning and 524.3MB in the end (delta: 119.5MB). Free memory was 376.3MB in the beginning and 444.6MB in the end (delta: -68.3MB). Peak memory consumption was 54.4MB. Max. memory is 16.0GB. [2023-08-26 15:23:28,484 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 404.8MB. Free memory is still 381.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 15:23:28,484 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.28ms. Allocated memory is still 404.8MB. Free memory was 376.0MB in the beginning and 355.9MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 15:23:28,485 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.03ms. Allocated memory is still 404.8MB. Free memory was 355.9MB in the beginning and 353.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 15:23:28,485 INFO L158 Benchmark]: Boogie Preprocessor took 14.57ms. Allocated memory is still 404.8MB. Free memory was 353.8MB in the beginning and 352.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 15:23:28,485 INFO L158 Benchmark]: RCFGBuilder took 287.26ms. Allocated memory is still 404.8MB. Free memory was 352.3MB in the beginning and 337.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 15:23:28,485 INFO L158 Benchmark]: TraceAbstraction took 4141.19ms. Allocated memory was 404.8MB in the beginning and 524.3MB in the end (delta: 119.5MB). Free memory was 337.0MB in the beginning and 444.6MB in the end (delta: -107.6MB). Peak memory consumption was 14.5MB. Max. memory is 16.0GB. [2023-08-26 15:23:28,486 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 404.8MB. Free memory is still 381.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 377.28ms. Allocated memory is still 404.8MB. Free memory was 376.0MB in the beginning and 355.9MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 40.03ms. Allocated memory is still 404.8MB. Free memory was 355.9MB in the beginning and 353.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 14.57ms. Allocated memory is still 404.8MB. Free memory was 353.8MB in the beginning and 352.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 287.26ms. Allocated memory is still 404.8MB. Free memory was 352.3MB in the beginning and 337.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4141.19ms. Allocated memory was 404.8MB in the beginning and 524.3MB in the end (delta: 119.5MB). Free memory was 337.0MB in the beginning and 444.6MB in the end (delta: -107.6MB). Peak memory consumption was 14.5MB. 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: 2.1s, 85 PlacesBefore, 32 PlacesAfterwards, 76 TransitionsBefore, 23 TransitionsAfterwards, 1110 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 76 TotalNumberOfCompositions, 2139 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1208, independent: 1127, independent conditional: 0, independent unconditional: 1127, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 605, independent: 580, independent conditional: 0, independent unconditional: 580, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1208, independent: 547, independent conditional: 0, independent unconditional: 547, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 605, unknown conditional: 0, unknown unconditional: 605] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: -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 7 procedures, 114 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.0s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 128 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 128 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 383 IncrementalHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 6 mSDtfsCounter, 383 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=222occurred in iteration=6, InterpolantAutomatonStates: 42, 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, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 339 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 15:23:28,505 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...