/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 PROGRAM_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_28-base_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 18:33:34,691 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 18:33:34,763 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 18:33:34,768 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 18:33:34,769 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 18:33:34,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 18:33:34,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 18:33:34,806 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 18:33:34,807 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 18:33:34,810 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 18:33:34,811 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 18:33:34,811 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 18:33:34,811 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 18:33:34,812 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 18:33:34,812 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 18:33:34,813 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 18:33:34,813 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 18:33:34,813 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 18:33:34,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 18:33:34,814 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 18:33:34,814 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 18:33:34,814 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 18:33:34,815 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 18:33:34,815 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 18:33:34,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 18:33:34,816 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 18:33:34,816 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 18:33:34,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 18:33:34,816 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 18:33:34,817 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 18:33:34,817 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 18:33:34,818 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 18:33:34,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 18:33:34,818 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 18:33:34,818 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 18:33:34,818 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 18:33:35,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 18:33:35,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 18:33:35,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 18:33:35,170 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 18:33:35,171 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 18:33:35,172 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_28-base_nr.i [2023-08-26 18:33:36,360 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 18:33:36,666 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 18:33:36,666 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_28-base_nr.i [2023-08-26 18:33:36,687 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa5ab7447/ce1fc0b7bf524864b75d2784f5057f60/FLAG9f62e520a [2023-08-26 18:33:36,699 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa5ab7447/ce1fc0b7bf524864b75d2784f5057f60 [2023-08-26 18:33:36,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 18:33:36,702 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 18:33:36,705 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 18:33:36,705 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 18:33:36,708 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 18:33:36,708 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:33:36" (1/1) ... [2023-08-26 18:33:36,709 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f253ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:33:36, skipping insertion in model container [2023-08-26 18:33:36,709 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:33:36" (1/1) ... [2023-08-26 18:33:36,763 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 18:33:37,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 18:33:37,156 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 18:33:37,179 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 18:33:37,181 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 18:33:37,188 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-26 18:33:37,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 18:33:37,261 WARN L669 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 18:33:37,266 INFO L206 MainTranslator]: Completed translation [2023-08-26 18:33:37,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:33:37 WrapperNode [2023-08-26 18:33:37,266 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 18:33:37,267 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 18:33:37,267 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 18:33:37,267 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 18:33:37,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:33:37" (1/1) ... [2023-08-26 18:33:37,295 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:33:37" (1/1) ... [2023-08-26 18:33:37,313 INFO L138 Inliner]: procedures = 265, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2023-08-26 18:33:37,313 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 18:33:37,314 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 18:33:37,314 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 18:33:37,314 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 18:33:37,319 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:33:37" (1/1) ... [2023-08-26 18:33:37,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:33:37" (1/1) ... [2023-08-26 18:33:37,322 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:33:37" (1/1) ... [2023-08-26 18:33:37,322 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:33:37" (1/1) ... [2023-08-26 18:33:37,339 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:33:37" (1/1) ... [2023-08-26 18:33:37,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:33:37" (1/1) ... [2023-08-26 18:33:37,342 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:33:37" (1/1) ... [2023-08-26 18:33:37,343 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:33:37" (1/1) ... [2023-08-26 18:33:37,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 18:33:37,345 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 18:33:37,345 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 18:33:37,345 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 18:33:37,346 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:33:37" (1/1) ... [2023-08-26 18:33:37,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 18:33:37,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 18:33:37,382 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 18:33:37,395 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 18:33:37,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 18:33:37,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 18:33:37,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 18:33:37,422 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 18:33:37,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 18:33:37,422 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 18:33:37,422 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 18:33:37,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 18:33:37,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 18:33:37,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 18:33:37,423 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 18:33:37,530 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 18:33:37,531 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 18:33:37,646 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 18:33:37,651 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 18:33:37,651 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 18:33:37,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:33:37 BoogieIcfgContainer [2023-08-26 18:33:37,653 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 18:33:37,654 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 18:33:37,654 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 18:33:37,657 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 18:33:37,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:33:36" (1/3) ... [2023-08-26 18:33:37,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1fd3bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:33:37, skipping insertion in model container [2023-08-26 18:33:37,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:33:37" (2/3) ... [2023-08-26 18:33:37,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1fd3bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:33:37, skipping insertion in model container [2023-08-26 18:33:37,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:33:37" (3/3) ... [2023-08-26 18:33:37,659 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_28-base_nr.i [2023-08-26 18:33:37,673 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 18:33:37,673 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-26 18:33:37,674 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 18:33:37,724 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 18:33:37,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 61 transitions, 127 flow [2023-08-26 18:33:37,782 INFO L124 PetriNetUnfolderBase]: 0/60 cut-off events. [2023-08-26 18:33:37,782 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:33:37,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 60 events. 0/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-26 18:33:37,785 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 61 transitions, 127 flow [2023-08-26 18:33:37,787 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 26 transitions, 52 flow [2023-08-26 18:33:37,790 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 18:33:37,797 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 27 places, 26 transitions, 52 flow [2023-08-26 18:33:37,799 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 27 places, 26 transitions, 52 flow [2023-08-26 18:33:37,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 26 transitions, 52 flow [2023-08-26 18:33:37,808 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2023-08-26 18:33:37,808 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:33:37,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 26 events. 0/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-26 18:33:37,809 INFO L119 LiptonReduction]: Number of co-enabled transitions 0 [2023-08-26 18:33:38,818 INFO L134 LiptonReduction]: Checked pairs total: 0 [2023-08-26 18:33:38,819 INFO L136 LiptonReduction]: Total number of compositions: 28 [2023-08-26 18:33:38,837 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 18:33:38,843 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;@77f4ade9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 18:33:38,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-26 18:33:38,844 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 18:33:38,845 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 18:33:38,845 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:33:38,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:33:38,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 18:33:38,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 18:33:38,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:33:38,851 INFO L85 PathProgramCache]: Analyzing trace with hash 201, now seen corresponding path program 1 times [2023-08-26 18:33:38,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:33:38,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988080887] [2023-08-26 18:33:38,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:33:38,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:33:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:33:38,944 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 18:33:38,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:33:38,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988080887] [2023-08-26 18:33:38,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988080887] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:33:38,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:33:38,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 18:33:38,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412295629] [2023-08-26 18:33:38,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:33:38,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 18:33:38,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:33:38,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 18:33:38,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 18:33:38,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 89 [2023-08-26 18:33:38,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3 places, 2 transitions, 4 flow. Second operand has 2 states, 2 states have (on average 60.5) internal successors, (121), 2 states have internal predecessors, (121), 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 18:33:38,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:33:38,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 89 [2023-08-26 18:33:38,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:33:38,991 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 18:33:38,991 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:33:38,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 1/1 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-26 18:33:38,992 INFO L140 encePairwiseOnDemand]: 87/89 looper letters, 0 selfloop transitions, 0 changer transitions 0/0 dead transitions. [2023-08-26 18:33:38,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2 places, 0 transitions, 0 flow [2023-08-26 18:33:38,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 18:33:38,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 18:33:39,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 122 transitions. [2023-08-26 18:33:39,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6853932584269663 [2023-08-26 18:33:39,002 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 122 transitions. [2023-08-26 18:33:39,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 122 transitions. [2023-08-26 18:33:39,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:33:39,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 122 transitions. [2023-08-26 18:33:39,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 61.0) internal successors, (122), 2 states have internal predecessors, (122), 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 18:33:39,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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 18:33:39,012 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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 18:33:39,014 INFO L175 Difference]: Start difference. First operand has 3 places, 2 transitions, 4 flow. Second operand 2 states and 122 transitions. [2023-08-26 18:33:39,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2 places, 0 transitions, 0 flow [2023-08-26 18:33:39,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2 places, 0 transitions, 0 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 18:33:39,016 INFO L231 Difference]: Finished difference. Result has 2 places, 0 transitions, 0 flow [2023-08-26 18:33:39,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=0, PETRI_DIFFERENCE_MINUEND_PLACES=1, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=0, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=0, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=2, PETRI_TRANSITIONS=0} [2023-08-26 18:33:39,020 INFO L281 CegarLoopForPetriNet]: 3 programPoint places, -1 predicate places. [2023-08-26 18:33:39,021 INFO L495 AbstractCegarLoop]: Abstraction has has 2 places, 0 transitions, 0 flow [2023-08-26 18:33:39,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 60.5) internal successors, (121), 2 states have internal predecessors, (121), 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 18:33:39,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 3 remaining) [2023-08-26 18:33:39,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 3 remaining) [2023-08-26 18:33:39,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-26 18:33:39,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 18:33:39,024 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 18:33:39,028 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 18:33:39,028 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 18:33:39,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:33:39 BasicIcfg [2023-08-26 18:33:39,033 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 18:33:39,034 INFO L158 Benchmark]: Toolchain (without parser) took 2331.37ms. Allocated memory is still 348.1MB. Free memory was 323.4MB in the beginning and 250.4MB in the end (delta: 73.1MB). Peak memory consumption was 73.4MB. Max. memory is 16.0GB. [2023-08-26 18:33:39,034 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 348.1MB. Free memory is still 324.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 18:33:39,034 INFO L158 Benchmark]: CACSL2BoogieTranslator took 561.39ms. Allocated memory is still 348.1MB. Free memory was 323.1MB in the beginning and 295.4MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-26 18:33:39,035 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.60ms. Allocated memory is still 348.1MB. Free memory was 295.4MB in the beginning and 293.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 18:33:39,035 INFO L158 Benchmark]: Boogie Preprocessor took 30.92ms. Allocated memory is still 348.1MB. Free memory was 293.3MB in the beginning and 291.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 18:33:39,035 INFO L158 Benchmark]: RCFGBuilder took 307.33ms. Allocated memory is still 348.1MB. Free memory was 291.6MB in the beginning and 279.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-26 18:33:39,036 INFO L158 Benchmark]: TraceAbstraction took 1378.97ms. Allocated memory is still 348.1MB. Free memory was 278.2MB in the beginning and 250.4MB in the end (delta: 27.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-26 18:33:39,038 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 348.1MB. Free memory is still 324.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 561.39ms. Allocated memory is still 348.1MB. Free memory was 323.1MB in the beginning and 295.4MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.60ms. Allocated memory is still 348.1MB. Free memory was 295.4MB in the beginning and 293.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.92ms. Allocated memory is still 348.1MB. Free memory was 293.3MB in the beginning and 291.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 307.33ms. Allocated memory is still 348.1MB. Free memory was 291.6MB in the beginning and 279.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 1378.97ms. Allocated memory is still 348.1MB. Free memory was 278.2MB in the beginning and 250.4MB in the end (delta: 27.9MB). Peak memory consumption was 29.4MB. 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: 736]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [736] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.0s, 27 PlacesBefore, 3 PlacesAfterwards, 26 TransitionsBefore, 2 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 28 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 81 locations, 3 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: 1.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 1 NumberOfCodeBlocks, 1 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 18:33:39,060 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...