/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/28-race_reach_84-list2_racing2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 19:12:59,472 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 19:12:59,554 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 19:12:59,558 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 19:12:59,559 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 19:12:59,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 19:12:59,589 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 19:12:59,590 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 19:12:59,590 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 19:12:59,594 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 19:12:59,594 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 19:12:59,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 19:12:59,594 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 19:12:59,596 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 19:12:59,596 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 19:12:59,596 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 19:12:59,596 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 19:12:59,597 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 19:12:59,597 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 19:12:59,597 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 19:12:59,597 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 19:12:59,598 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 19:12:59,598 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 19:12:59,599 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 19:12:59,599 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 19:12:59,599 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 19:12:59,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 19:12:59,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 19:12:59,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 19:12:59,600 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 19:12:59,601 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 19:12:59,601 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 19:12:59,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 19:12:59,602 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 19:12:59,602 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 19:12:59,602 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 19:12:59,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 19:12:59,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 19:12:59,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 19:12:59,938 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 19:12:59,938 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 19:12:59,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2023-08-26 19:13:01,061 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 19:13:01,397 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 19:13:01,398 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2023-08-26 19:13:01,416 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cc622b9c/f559e0a9d77b4a39b1eff288927ea7b2/FLAGf7a0b958d [2023-08-26 19:13:01,432 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cc622b9c/f559e0a9d77b4a39b1eff288927ea7b2 [2023-08-26 19:13:01,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 19:13:01,438 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 19:13:01,440 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 19:13:01,440 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 19:13:01,443 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 19:13:01,444 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:13:01" (1/1) ... [2023-08-26 19:13:01,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283c9275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:13:01, skipping insertion in model container [2023-08-26 19:13:01,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:13:01" (1/1) ... [2023-08-26 19:13:01,495 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 19:13:01,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 19:13:01,906 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 19:13:01,933 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-26 19:13:01,935 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-26 19:13:01,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 19:13:02,053 INFO L206 MainTranslator]: Completed translation [2023-08-26 19:13:02,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:13:02 WrapperNode [2023-08-26 19:13:02,053 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 19:13:02,054 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 19:13:02,054 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 19:13:02,054 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 19:13:02,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:13:02" (1/1) ... [2023-08-26 19:13:02,082 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:13:02" (1/1) ... [2023-08-26 19:13:02,113 INFO L138 Inliner]: procedures = 279, calls = 89, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 396 [2023-08-26 19:13:02,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 19:13:02,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 19:13:02,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 19:13:02,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 19:13:02,125 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:13:02" (1/1) ... [2023-08-26 19:13:02,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:13:02" (1/1) ... [2023-08-26 19:13:02,133 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:13:02" (1/1) ... [2023-08-26 19:13:02,133 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:13:02" (1/1) ... [2023-08-26 19:13:02,146 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:13:02" (1/1) ... [2023-08-26 19:13:02,151 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:13:02" (1/1) ... [2023-08-26 19:13:02,154 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:13:02" (1/1) ... [2023-08-26 19:13:02,155 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:13:02" (1/1) ... [2023-08-26 19:13:02,159 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 19:13:02,160 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 19:13:02,160 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 19:13:02,160 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 19:13:02,161 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:13:02" (1/1) ... [2023-08-26 19:13:02,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 19:13:02,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 19:13:02,189 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 19:13:02,195 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 19:13:02,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 19:13:02,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-26 19:13:02,217 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-26 19:13:02,217 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-26 19:13:02,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 19:13:02,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 19:13:02,217 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-26 19:13:02,217 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-26 19:13:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 19:13:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 19:13:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 19:13:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 19:13:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-26 19:13:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-08-26 19:13:02,218 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-08-26 19:13:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 19:13:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 19:13:02,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 19:13:02,220 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 19:13:02,383 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 19:13:02,384 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 19:13:03,002 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 19:13:03,014 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 19:13:03,014 INFO L302 CfgBuilder]: Removed 29 assume(true) statements. [2023-08-26 19:13:03,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:13:03 BoogieIcfgContainer [2023-08-26 19:13:03,016 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 19:13:03,018 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 19:13:03,019 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 19:13:03,021 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 19:13:03,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 07:13:01" (1/3) ... [2023-08-26 19:13:03,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7198c2fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:13:03, skipping insertion in model container [2023-08-26 19:13:03,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:13:02" (2/3) ... [2023-08-26 19:13:03,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7198c2fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:13:03, skipping insertion in model container [2023-08-26 19:13:03,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:13:03" (3/3) ... [2023-08-26 19:13:03,025 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_84-list2_racing2.i [2023-08-26 19:13:03,038 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 19:13:03,039 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2023-08-26 19:13:03,039 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 19:13:03,186 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-26 19:13:03,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 432 places, 475 transitions, 992 flow [2023-08-26 19:13:03,768 INFO L124 PetriNetUnfolderBase]: 194/1735 cut-off events. [2023-08-26 19:13:03,768 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-26 19:13:03,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1796 conditions, 1735 events. 194/1735 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 12565 event pairs, 0 based on Foata normal form. 0/1275 useless extension candidates. Maximal degree in co-relation 888. Up to 16 conditions per place. [2023-08-26 19:13:03,812 INFO L82 GeneralOperation]: Start removeDead. Operand has 432 places, 475 transitions, 992 flow [2023-08-26 19:13:03,894 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 432 places, 475 transitions, 992 flow [2023-08-26 19:13:03,899 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 19:13:03,910 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 432 places, 475 transitions, 992 flow [2023-08-26 19:13:03,913 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 432 places, 475 transitions, 992 flow [2023-08-26 19:13:03,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 432 places, 475 transitions, 992 flow [2023-08-26 19:13:04,251 INFO L124 PetriNetUnfolderBase]: 194/1735 cut-off events. [2023-08-26 19:13:04,251 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-26 19:13:04,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1796 conditions, 1735 events. 194/1735 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 12565 event pairs, 0 based on Foata normal form. 0/1275 useless extension candidates. Maximal degree in co-relation 888. Up to 16 conditions per place. [2023-08-26 19:13:04,359 INFO L119 LiptonReduction]: Number of co-enabled transitions 103902 [2023-08-26 19:13:23,743 INFO L134 LiptonReduction]: Checked pairs total: 268760 [2023-08-26 19:13:23,743 INFO L136 LiptonReduction]: Total number of compositions: 426 [2023-08-26 19:13:23,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 19:13:23,767 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;@2b72809c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 19:13:23,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 110 error locations. [2023-08-26 19:13:23,768 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 19:13:23,768 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 19:13:23,768 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 19:13:23,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 19:13:23,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 19:13:23,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t3_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 107 more)] === [2023-08-26 19:13:23,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 19:13:23,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1848, now seen corresponding path program 1 times [2023-08-26 19:13:23,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 19:13:23,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692911548] [2023-08-26 19:13:23,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 19:13:23,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 19:13:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 19:13:23,878 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 19:13:23,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 19:13:23,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692911548] [2023-08-26 19:13:23,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692911548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 19:13:23,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 19:13:23,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 19:13:23,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567413710] [2023-08-26 19:13:23,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 19:13:23,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 19:13:23,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 19:13:23,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 19:13:23,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 19:13:23,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 901 [2023-08-26 19:13:23,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 191 transitions, 424 flow. Second operand has 2 states, 2 states have (on average 428.5) internal successors, (857), 2 states have internal predecessors, (857), 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 19:13:23,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 19:13:23,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 901 [2023-08-26 19:13:23,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 19:14:40,721 INFO L124 PetriNetUnfolderBase]: 805974/1174982 cut-off events. [2023-08-26 19:14:40,721 INFO L125 PetriNetUnfolderBase]: For 7564/7564 co-relation queries the response was YES. [2023-08-26 19:14:43,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2250160 conditions, 1174982 events. 805974/1174982 cut-off events. For 7564/7564 co-relation queries the response was YES. Maximal size of possible extension queue 29340. Compared 11241366 event pairs, 751698 based on Foata normal form. 72315/684508 useless extension candidates. Maximal degree in co-relation 2083083. Up to 1070355 conditions per place. [2023-08-26 19:14:49,696 INFO L140 encePairwiseOnDemand]: 870/901 looper letters, 120 selfloop transitions, 0 changer transitions 0/160 dead transitions. [2023-08-26 19:14:49,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 160 transitions, 602 flow [2023-08-26 19:14:49,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 19:14:49,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 19:14:49,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1007 transitions. [2023-08-26 19:14:49,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5588235294117647 [2023-08-26 19:14:49,723 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1007 transitions. [2023-08-26 19:14:49,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1007 transitions. [2023-08-26 19:14:49,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 19:14:49,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1007 transitions. [2023-08-26 19:14:49,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 503.5) internal successors, (1007), 2 states have internal predecessors, (1007), 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 19:14:49,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 901.0) internal successors, (2703), 3 states have internal predecessors, (2703), 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 19:14:49,765 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 901.0) internal successors, (2703), 3 states have internal predecessors, (2703), 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 19:14:49,770 INFO L175 Difference]: Start difference. First operand has 161 places, 191 transitions, 424 flow. Second operand 2 states and 1007 transitions. [2023-08-26 19:14:49,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 160 transitions, 602 flow [2023-08-26 19:14:50,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 160 transitions, 602 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 19:14:50,015 INFO L231 Difference]: Finished difference. Result has 154 places, 160 transitions, 362 flow [2023-08-26 19:14:50,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=901, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=362, PETRI_PLACES=154, PETRI_TRANSITIONS=160} [2023-08-26 19:14:50,036 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -7 predicate places. [2023-08-26 19:14:50,036 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 160 transitions, 362 flow [2023-08-26 19:14:50,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 428.5) internal successors, (857), 2 states have internal predecessors, (857), 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 19:14:50,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 19:14:50,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 19:14:50,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 19:14:50,037 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t3_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 107 more)] === [2023-08-26 19:14:50,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 19:14:50,044 INFO L85 PathProgramCache]: Analyzing trace with hash 58917, now seen corresponding path program 1 times [2023-08-26 19:14:50,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 19:14:50,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251592544] [2023-08-26 19:14:50,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 19:14:50,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 19:14:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 19:14:50,480 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 19:14:50,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 19:14:50,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251592544] [2023-08-26 19:14:50,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251592544] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 19:14:50,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 19:14:50,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 19:14:50,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85057816] [2023-08-26 19:14:50,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 19:14:50,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 19:14:50,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 19:14:50,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 19:14:50,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 19:14:50,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 901 [2023-08-26 19:14:50,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 160 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 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 19:14:50,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 19:14:50,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 901 [2023-08-26 19:14:50,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand