/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/goblint-regression/04-mutex_36-trylock_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 15:29:33,314 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 15:29:33,372 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 15:29:33,379 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 15:29:33,379 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 15:29:33,404 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 15:29:33,404 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 15:29:33,404 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 15:29:33,405 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 15:29:33,409 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 15:29:33,409 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 15:29:33,409 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 15:29:33,409 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 15:29:33,410 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 15:29:33,410 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 15:29:33,411 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 15:29:33,411 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 15:29:33,411 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 15:29:33,411 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 15:29:33,411 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 15:29:33,411 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 15:29:33,412 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 15:29:33,412 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 15:29:33,412 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 15:29:33,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 15:29:33,413 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 15:29:33,413 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 15:29:33,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:29:33,413 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 15:29:33,413 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 15:29:33,414 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 15:29:33,414 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 15:29:33,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 15:29:33,414 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 15:29:33,415 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 15:29:33,415 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 15:29:33,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 15:29:33,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 15:29:33,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 15:29:33,661 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 15:29:33,661 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 15:29:33,662 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_36-trylock_nr.i [2023-08-26 15:29:34,658 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 15:29:34,916 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 15:29:34,916 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_36-trylock_nr.i [2023-08-26 15:29:34,943 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b69d6f3ae/4d829fdef5274b6bb296973529610402/FLAGa083f18a8 [2023-08-26 15:29:34,958 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b69d6f3ae/4d829fdef5274b6bb296973529610402 [2023-08-26 15:29:34,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 15:29:34,963 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 15:29:34,964 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 15:29:34,964 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 15:29:34,966 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 15:29:34,966 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:29:34" (1/1) ... [2023-08-26 15:29:34,967 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e74e12e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:29:34, skipping insertion in model container [2023-08-26 15:29:34,967 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:29:34" (1/1) ... [2023-08-26 15:29:35,021 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 15:29:35,475 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:29:35,484 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 15:29:35,499 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 15:29:35,500 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 15:29:35,505 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [739] [2023-08-26 15:29:35,516 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1798] [2023-08-26 15:29:35,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:29:35,603 WARN L669 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 15:29:35,604 WARN L669 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 15:29:35,604 WARN L669 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 15:29:35,604 WARN L669 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 15:29:35,608 INFO L206 MainTranslator]: Completed translation [2023-08-26 15:29:35,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:29:35 WrapperNode [2023-08-26 15:29:35,609 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 15:29:35,609 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 15:29:35,609 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 15:29:35,609 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 15:29:35,613 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:29:35" (1/1) ... [2023-08-26 15:29:35,631 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:29:35" (1/1) ... [2023-08-26 15:29:35,649 INFO L138 Inliner]: procedures = 524, calls = 69, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 131 [2023-08-26 15:29:35,649 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 15:29:35,649 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 15:29:35,649 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 15:29:35,650 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 15:29:35,655 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:29:35" (1/1) ... [2023-08-26 15:29:35,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:29:35" (1/1) ... [2023-08-26 15:29:35,658 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:29:35" (1/1) ... [2023-08-26 15:29:35,658 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:29:35" (1/1) ... [2023-08-26 15:29:35,665 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:29:35" (1/1) ... [2023-08-26 15:29:35,668 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:29:35" (1/1) ... [2023-08-26 15:29:35,671 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:29:35" (1/1) ... [2023-08-26 15:29:35,672 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:29:35" (1/1) ... [2023-08-26 15:29:35,676 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 15:29:35,676 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 15:29:35,677 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 15:29:35,677 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 15:29:35,677 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:29:35" (1/1) ... [2023-08-26 15:29:35,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:29:35,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 15:29:35,698 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 15:29:35,707 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 15:29:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure counter_thread [2023-08-26 15:29:35,723 INFO L138 BoogieDeclarations]: Found implementation of procedure counter_thread [2023-08-26 15:29:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-08-26 15:29:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure monitor_thread [2023-08-26 15:29:35,724 INFO L138 BoogieDeclarations]: Found implementation of procedure monitor_thread [2023-08-26 15:29:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-08-26 15:29:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 15:29:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 15:29:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 15:29:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 15:29:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 15:29:35,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 15:29:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-08-26 15:29:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 15:29:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-08-26 15:29:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-08-26 15:29:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 15:29:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 15:29:35,726 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 15:29:35,922 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 15:29:35,923 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 15:29:36,182 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 15:29:36,190 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 15:29:36,190 INFO L302 CfgBuilder]: Removed 19 assume(true) statements. [2023-08-26 15:29:36,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:29:36 BoogieIcfgContainer [2023-08-26 15:29:36,191 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 15:29:36,193 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 15:29:36,193 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 15:29:36,195 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 15:29:36,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:29:34" (1/3) ... [2023-08-26 15:29:36,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d250420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:29:36, skipping insertion in model container [2023-08-26 15:29:36,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:29:35" (2/3) ... [2023-08-26 15:29:36,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d250420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:29:36, skipping insertion in model container [2023-08-26 15:29:36,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:29:36" (3/3) ... [2023-08-26 15:29:36,196 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_36-trylock_nr.i [2023-08-26 15:29:36,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 15:29:36,208 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-26 15:29:36,208 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 15:29:36,252 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 15:29:36,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 238 transitions, 492 flow [2023-08-26 15:29:36,358 INFO L124 PetriNetUnfolderBase]: 32/236 cut-off events. [2023-08-26 15:29:36,358 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 15:29:36,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 236 events. 32/236 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 520 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 138. Up to 5 conditions per place. [2023-08-26 15:29:36,364 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 238 transitions, 492 flow [2023-08-26 15:29:36,372 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 209 transitions, 427 flow [2023-08-26 15:29:36,375 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:29:36,384 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 209 transitions, 427 flow [2023-08-26 15:29:36,386 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 209 transitions, 427 flow [2023-08-26 15:29:36,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 209 transitions, 427 flow [2023-08-26 15:29:36,425 INFO L124 PetriNetUnfolderBase]: 28/209 cut-off events. [2023-08-26 15:29:36,426 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 15:29:36,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 209 events. 28/209 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 465 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 138. Up to 5 conditions per place. [2023-08-26 15:29:36,433 INFO L119 LiptonReduction]: Number of co-enabled transitions 11934 [2023-08-26 15:29:47,091 INFO L134 LiptonReduction]: Checked pairs total: 10820 [2023-08-26 15:29:47,091 INFO L136 LiptonReduction]: Total number of compositions: 222 [2023-08-26 15:29:47,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 15:29:47,104 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;@531bf51a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:29:47,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-26 15:29:47,105 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:29:47,105 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 15:29:47,105 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:29:47,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:29:47,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 15:29:47,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:29:47,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:29:47,109 INFO L85 PathProgramCache]: Analyzing trace with hash 959, now seen corresponding path program 1 times [2023-08-26 15:29:47,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:29:47,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601477612] [2023-08-26 15:29:47,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:29:47,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:29:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:29:47,240 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 15:29:47,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:29:47,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601477612] [2023-08-26 15:29:47,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601477612] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:29:47,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:29:47,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 15:29:47,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448765680] [2023-08-26 15:29:47,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:29:47,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 15:29:47,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:29:47,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 15:29:47,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 15:29:47,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 460 [2023-08-26 15:29:47,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 50 transitions, 109 flow. Second operand has 2 states, 2 states have (on average 207.5) internal successors, (415), 2 states have internal predecessors, (415), 0 states have call successors, (0), 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 15:29:47,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:29:47,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 460 [2023-08-26 15:29:47,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:29:47,347 INFO L124 PetriNetUnfolderBase]: 194/346 cut-off events. [2023-08-26 15:29:47,348 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-26 15:29:47,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 346 events. 194/346 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1218 event pairs, 119 based on Foata normal form. 56/242 useless extension candidates. Maximal degree in co-relation 572. Up to 291 conditions per place. [2023-08-26 15:29:47,352 INFO L140 encePairwiseOnDemand]: 447/460 looper letters, 22 selfloop transitions, 0 changer transitions 1/31 dead transitions. [2023-08-26 15:29:47,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 117 flow [2023-08-26 15:29:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 15:29:47,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 15:29:47,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 450 transitions. [2023-08-26 15:29:47,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2023-08-26 15:29:47,367 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 450 transitions. [2023-08-26 15:29:47,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 450 transitions. [2023-08-26 15:29:47,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:29:47,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 450 transitions. [2023-08-26 15:29:47,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 225.0) internal successors, (450), 2 states have internal predecessors, (450), 0 states have call successors, (0), 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 15:29:47,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 460.0) internal successors, (1380), 3 states have internal predecessors, (1380), 0 states have call successors, (0), 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 15:29:47,379 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 460.0) internal successors, (1380), 3 states have internal predecessors, (1380), 0 states have call successors, (0), 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 15:29:47,380 INFO L175 Difference]: Start difference. First operand has 39 places, 50 transitions, 109 flow. Second operand 2 states and 450 transitions. [2023-08-26 15:29:47,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 117 flow [2023-08-26 15:29:47,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 112 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 15:29:47,384 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 64 flow [2023-08-26 15:29:47,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=64, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2023-08-26 15:29:47,390 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -7 predicate places. [2023-08-26 15:29:47,390 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 64 flow [2023-08-26 15:29:47,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 207.5) internal successors, (415), 2 states have internal predecessors, (415), 0 states have call successors, (0), 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 15:29:47,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:29:47,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 15:29:47,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 15:29:47,391 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:29:47,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:29:47,392 INFO L85 PathProgramCache]: Analyzing trace with hash 29303654, now seen corresponding path program 1 times [2023-08-26 15:29:47,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:29:47,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434266403] [2023-08-26 15:29:47,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:29:47,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:29:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:29:47,623 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 15:29:47,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:29:47,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434266403] [2023-08-26 15:29:47,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434266403] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:29:47,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:29:47,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 15:29:47,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586047432] [2023-08-26 15:29:47,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:29:47,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:29:47,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:29:47,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:29:47,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:29:47,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 460 [2023-08-26 15:29:47,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 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 15:29:47,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:29:47,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 460 [2023-08-26 15:29:47,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:29:47,686 INFO L124 PetriNetUnfolderBase]: 311/496 cut-off events. [2023-08-26 15:29:47,687 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-26 15:29:47,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 496 events. 311/496 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1717 event pairs, 199 based on Foata normal form. 0/278 useless extension candidates. Maximal degree in co-relation 957. Up to 452 conditions per place. [2023-08-26 15:29:47,689 INFO L140 encePairwiseOnDemand]: 457/460 looper letters, 24 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-08-26 15:29:47,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 110 flow [2023-08-26 15:29:47,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:29:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:29:47,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2023-08-26 15:29:47,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782608695652174 [2023-08-26 15:29:47,691 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2023-08-26 15:29:47,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2023-08-26 15:29:47,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:29:47,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2023-08-26 15:29:47,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 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 15:29:47,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 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 15:29:47,698 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 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 15:29:47,698 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 64 flow. Second operand 3 states and 522 transitions. [2023-08-26 15:29:47,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 110 flow [2023-08-26 15:29:47,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 110 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 15:29:47,699 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 62 flow [2023-08-26 15:29:47,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=28} [2023-08-26 15:29:47,703 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-08-26 15:29:47,704 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 62 flow [2023-08-26 15:29:47,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 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 15:29:47,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:29:47,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 15:29:47,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 15:29:47,705 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:29:47,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:29:47,706 INFO L85 PathProgramCache]: Analyzing trace with hash 29303653, now seen corresponding path program 1 times [2023-08-26 15:29:47,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:29:47,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21065192] [2023-08-26 15:29:47,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:29:47,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:29:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:29:47,793 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 15:29:47,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:29:47,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21065192] [2023-08-26 15:29:47,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21065192] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:29:47,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:29:47,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 15:29:47,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193419929] [2023-08-26 15:29:47,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:29:47,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:29:47,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:29:47,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:29:47,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:29:47,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 460 [2023-08-26 15:29:47,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 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 15:29:47,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:29:47,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 460 [2023-08-26 15:29:47,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:29:47,843 INFO L124 PetriNetUnfolderBase]: 300/475 cut-off events. [2023-08-26 15:29:47,843 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-26 15:29:47,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 920 conditions, 475 events. 300/475 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1644 event pairs, 191 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 916. Up to 431 conditions per place. [2023-08-26 15:29:47,845 INFO L140 encePairwiseOnDemand]: 457/460 looper letters, 19 selfloop transitions, 1 changer transitions 3/26 dead transitions. [2023-08-26 15:29:47,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 26 transitions, 104 flow [2023-08-26 15:29:47,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:29:47,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:29:47,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2023-08-26 15:29:47,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37028985507246376 [2023-08-26 15:29:47,846 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2023-08-26 15:29:47,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2023-08-26 15:29:47,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:29:47,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2023-08-26 15:29:47,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 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 15:29:47,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 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 15:29:47,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 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 15:29:47,850 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 62 flow. Second operand 3 states and 511 transitions. [2023-08-26 15:29:47,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 26 transitions, 104 flow [2023-08-26 15:29:47,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 103 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 15:29:47,851 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 52 flow [2023-08-26 15:29:47,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=28, 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=3, PETRI_FLOW=52, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-08-26 15:29:47,852 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-08-26 15:29:47,854 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 52 flow [2023-08-26 15:29:47,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 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 15:29:47,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:29:47,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:29:47,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 15:29:47,855 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:29:47,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:29:47,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1107441141, now seen corresponding path program 1 times [2023-08-26 15:29:47,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:29:47,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272509600] [2023-08-26 15:29:47,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:29:47,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:29:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:29:48,012 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 15:29:48,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:29:48,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272509600] [2023-08-26 15:29:48,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272509600] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:29:48,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:29:48,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 15:29:48,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523300508] [2023-08-26 15:29:48,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:29:48,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:29:48,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:29:48,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:29:48,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:29:48,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 460 [2023-08-26 15:29:48,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 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 15:29:48,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:29:48,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 460 [2023-08-26 15:29:48,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:29:48,059 INFO L124 PetriNetUnfolderBase]: 282/435 cut-off events. [2023-08-26 15:29:48,059 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:29:48,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 435 events. 282/435 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1414 event pairs, 176 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 841. Up to 395 conditions per place. [2023-08-26 15:29:48,061 INFO L140 encePairwiseOnDemand]: 458/460 looper letters, 19 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-08-26 15:29:48,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 22 transitions, 90 flow [2023-08-26 15:29:48,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:29:48,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:29:48,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2023-08-26 15:29:48,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3739130434782609 [2023-08-26 15:29:48,063 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2023-08-26 15:29:48,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2023-08-26 15:29:48,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:29:48,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2023-08-26 15:29:48,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 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 15:29:48,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 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 15:29:48,066 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 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 15:29:48,066 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 516 transitions. [2023-08-26 15:29:48,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 22 transitions, 90 flow [2023-08-26 15:29:48,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 22 transitions, 89 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 15:29:48,067 INFO L231 Difference]: Finished difference. Result has 27 places, 22 transitions, 51 flow [2023-08-26 15:29:48,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=51, PETRI_PLACES=27, PETRI_TRANSITIONS=22} [2023-08-26 15:29:48,068 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -12 predicate places. [2023-08-26 15:29:48,068 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 22 transitions, 51 flow [2023-08-26 15:29:48,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 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 15:29:48,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:29:48,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:29:48,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 15:29:48,069 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:29:48,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:29:48,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1107441140, now seen corresponding path program 1 times [2023-08-26 15:29:48,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:29:48,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787146823] [2023-08-26 15:29:48,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:29:48,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:29:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:29:48,165 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 15:29:48,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:29:48,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787146823] [2023-08-26 15:29:48,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787146823] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:29:48,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:29:48,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 15:29:48,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908607787] [2023-08-26 15:29:48,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:29:48,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 15:29:48,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:29:48,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 15:29:48,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 15:29:48,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 460 [2023-08-26 15:29:48,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 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 15:29:48,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:29:48,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 460 [2023-08-26 15:29:48,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:29:48,212 INFO L124 PetriNetUnfolderBase]: 224/349 cut-off events. [2023-08-26 15:29:48,212 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:29:48,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 349 events. 224/349 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1079 event pairs, 138 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 678. Up to 317 conditions per place. [2023-08-26 15:29:48,213 INFO L140 encePairwiseOnDemand]: 458/460 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2023-08-26 15:29:48,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 21 transitions, 87 flow [2023-08-26 15:29:48,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:29:48,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:29:48,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2023-08-26 15:29:48,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35797101449275365 [2023-08-26 15:29:48,214 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2023-08-26 15:29:48,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2023-08-26 15:29:48,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:29:48,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2023-08-26 15:29:48,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 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 15:29:48,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 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 15:29:48,218 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 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 15:29:48,218 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 51 flow. Second operand 3 states and 494 transitions. [2023-08-26 15:29:48,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 21 transitions, 87 flow [2023-08-26 15:29:48,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 21 transitions, 86 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 15:29:48,219 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-08-26 15:29:48,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, 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=3, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2023-08-26 15:29:48,220 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -12 predicate places. [2023-08-26 15:29:48,220 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-08-26 15:29:48,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 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 15:29:48,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-08-26 15:29:48,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-08-26 15:29:48,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-08-26 15:29:48,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-08-26 15:29:48,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-08-26 15:29:48,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2023-08-26 15:29:48,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2023-08-26 15:29:48,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2023-08-26 15:29:48,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2023-08-26 15:29:48,227 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-08-26 15:29:48,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 15:29:48,227 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-26 15:29:48,229 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 15:29:48,229 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 15:29:48,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:29:48 BasicIcfg [2023-08-26 15:29:48,232 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 15:29:48,232 INFO L158 Benchmark]: Toolchain (without parser) took 13269.63ms. Allocated memory was 360.7MB in the beginning and 578.8MB in the end (delta: 218.1MB). Free memory was 333.4MB in the beginning and 248.0MB in the end (delta: 85.4MB). Peak memory consumption was 305.1MB. Max. memory is 16.0GB. [2023-08-26 15:29:48,233 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 360.7MB. Free memory was 338.1MB in the beginning and 338.0MB in the end (delta: 119.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 15:29:48,233 INFO L158 Benchmark]: CACSL2BoogieTranslator took 645.28ms. Allocated memory is still 360.7MB. Free memory was 333.4MB in the beginning and 271.1MB in the end (delta: 62.3MB). Peak memory consumption was 60.8MB. Max. memory is 16.0GB. [2023-08-26 15:29:48,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.72ms. Allocated memory is still 360.7MB. Free memory was 271.1MB in the beginning and 267.8MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 15:29:48,236 INFO L158 Benchmark]: Boogie Preprocessor took 26.53ms. Allocated memory is still 360.7MB. Free memory was 267.8MB in the beginning and 264.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 15:29:48,236 INFO L158 Benchmark]: RCFGBuilder took 514.94ms. Allocated memory was 360.7MB in the beginning and 482.3MB in the end (delta: 121.6MB). Free memory was 264.8MB in the beginning and 443.0MB in the end (delta: -178.2MB). Peak memory consumption was 22.1MB. Max. memory is 16.0GB. [2023-08-26 15:29:48,236 INFO L158 Benchmark]: TraceAbstraction took 12039.21ms. Allocated memory was 482.3MB in the beginning and 578.8MB in the end (delta: 96.5MB). Free memory was 442.0MB in the beginning and 248.0MB in the end (delta: 194.0MB). Peak memory consumption was 291.5MB. Max. memory is 16.0GB. [2023-08-26 15:29:48,238 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 360.7MB. Free memory was 338.1MB in the beginning and 338.0MB in the end (delta: 119.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 645.28ms. Allocated memory is still 360.7MB. Free memory was 333.4MB in the beginning and 271.1MB in the end (delta: 62.3MB). Peak memory consumption was 60.8MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.72ms. Allocated memory is still 360.7MB. Free memory was 271.1MB in the beginning and 267.8MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.53ms. Allocated memory is still 360.7MB. Free memory was 267.8MB in the beginning and 264.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 514.94ms. Allocated memory was 360.7MB in the beginning and 482.3MB in the end (delta: 121.6MB). Free memory was 264.8MB in the beginning and 443.0MB in the end (delta: -178.2MB). Peak memory consumption was 22.1MB. Max. memory is 16.0GB. * TraceAbstraction took 12039.21ms. Allocated memory was 482.3MB in the beginning and 578.8MB in the end (delta: 96.5MB). Free memory was 442.0MB in the beginning and 248.0MB in the end (delta: 194.0MB). Peak memory consumption was 291.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 739]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [739] - GenericResultAtLocation [Line: 1798]: Unsoundness Warning unspecified type, defaulting to int C: long [1798] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.7s, 188 PlacesBefore, 39 PlacesAfterwards, 209 TransitionsBefore, 50 TransitionsAfterwards, 11934 CoEnabledTransitionPairs, 8 FixpointIterations, 60 TrivialSequentialCompositions, 127 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 25 ConcurrentYvCompositions, 10 ChoiceCompositions, 222 TotalNumberOfCompositions, 10820 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10444, independent: 10425, independent conditional: 0, independent unconditional: 10425, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6462, independent: 6454, independent conditional: 0, independent unconditional: 6454, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10444, independent: 3971, independent conditional: 0, independent unconditional: 3971, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 6462, unknown conditional: 0, unknown unconditional: 6462] , Statistics on independence cache: Total cache size (in pairs): 91, Positive cache size: 89, Positive conditional cache size: 0, Positive unconditional cache size: 89, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, 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: -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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 291 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: 12.0s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 84 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 84 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 110 IncrementalHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 0 mSDtfsCounter, 110 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 0.5s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 138 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 15:29:48,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...