/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 12:47:17,344 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 12:47:17,432 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 12:47:17,438 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 12:47:17,439 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 12:47:17,470 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 12:47:17,470 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 12:47:17,471 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 12:47:17,471 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 12:47:17,475 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 12:47:17,475 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 12:47:17,475 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 12:47:17,476 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 12:47:17,477 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 12:47:17,477 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 12:47:17,477 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 12:47:17,478 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 12:47:17,478 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 12:47:17,478 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 12:47:17,478 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 12:47:17,478 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 12:47:17,479 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 12:47:17,479 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 12:47:17,480 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 12:47:17,480 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 12:47:17,480 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 12:47:17,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 12:47:17,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:47:17,481 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 12:47:17,481 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 12:47:17,482 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 12:47:17,482 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 12:47:17,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 12:47:17,483 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 12:47:17,483 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 12:47:17,483 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 12:47:17,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 12:47:17,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 12:47:17,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 12:47:17,787 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 12:47:17,787 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 12:47:17,789 INFO L431 ainManager$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 12:47:19,051 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 12:47:19,344 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 12:47:19,344 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2023-08-26 12:47:19,365 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eabe4e3e8/491c0dc5dbd34bd59df779676eb6c8df/FLAG465377a1e [2023-08-26 12:47:19,381 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eabe4e3e8/491c0dc5dbd34bd59df779676eb6c8df [2023-08-26 12:47:19,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 12:47:19,387 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 12:47:19,389 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 12:47:19,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 12:47:19,393 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 12:47:19,393 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:47:19" (1/1) ... [2023-08-26 12:47:19,394 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17151b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:47:19, skipping insertion in model container [2023-08-26 12:47:19,394 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:47:19" (1/1) ... [2023-08-26 12:47:19,465 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 12:47:19,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:47:19,980 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 12:47:20,004 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-26 12:47:20,006 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-26 12:47:20,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:47:20,129 INFO L206 MainTranslator]: Completed translation [2023-08-26 12:47:20,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:47:20 WrapperNode [2023-08-26 12:47:20,130 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 12:47:20,131 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 12:47:20,131 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 12:47:20,131 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 12:47:20,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:47:20" (1/1) ... [2023-08-26 12:47:20,169 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:47:20" (1/1) ... [2023-08-26 12:47:20,215 INFO L138 Inliner]: procedures = 279, calls = 89, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 396 [2023-08-26 12:47:20,215 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 12:47:20,216 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 12:47:20,216 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 12:47:20,216 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 12:47:20,227 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:47:20" (1/1) ... [2023-08-26 12:47:20,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:47:20" (1/1) ... [2023-08-26 12:47:20,242 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:47:20" (1/1) ... [2023-08-26 12:47:20,242 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:47:20" (1/1) ... [2023-08-26 12:47:20,268 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:47:20" (1/1) ... [2023-08-26 12:47:20,274 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:47:20" (1/1) ... [2023-08-26 12:47:20,276 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:47:20" (1/1) ... [2023-08-26 12:47:20,278 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:47:20" (1/1) ... [2023-08-26 12:47:20,282 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 12:47:20,283 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 12:47:20,283 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 12:47:20,283 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 12:47:20,284 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:47:20" (1/1) ... [2023-08-26 12:47:20,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:47:20,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:47:20,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 12:47:20,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 12:47:20,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 12:47:20,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-26 12:47:20,363 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-26 12:47:20,364 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-26 12:47:20,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 12:47:20,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 12:47:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-26 12:47:20,365 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-26 12:47:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 12:47:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 12:47:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 12:47:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 12:47:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-26 12:47:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-08-26 12:47:20,366 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-08-26 12:47:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 12:47:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 12:47:20,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 12:47:20,370 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 12:47:20,550 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 12:47:20,552 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 12:47:21,073 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 12:47:21,081 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 12:47:21,081 INFO L302 CfgBuilder]: Removed 29 assume(true) statements. [2023-08-26 12:47:21,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:47:21 BoogieIcfgContainer [2023-08-26 12:47:21,084 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 12:47:21,086 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 12:47:21,086 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 12:47:21,088 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 12:47:21,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:47:19" (1/3) ... [2023-08-26 12:47:21,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b63aa2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:47:21, skipping insertion in model container [2023-08-26 12:47:21,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:47:20" (2/3) ... [2023-08-26 12:47:21,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b63aa2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:47:21, skipping insertion in model container [2023-08-26 12:47:21,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:47:21" (3/3) ... [2023-08-26 12:47:21,091 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_84-list2_racing2.i [2023-08-26 12:47:21,105 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 12:47:21,105 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2023-08-26 12:47:21,105 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 12:47:21,220 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-26 12:47:21,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 432 places, 475 transitions, 992 flow [2023-08-26 12:47:21,764 INFO L124 PetriNetUnfolderBase]: 194/1735 cut-off events. [2023-08-26 12:47:21,764 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-26 12:47:21,807 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 12:47:21,807 INFO L82 GeneralOperation]: Start removeDead. Operand has 432 places, 475 transitions, 992 flow [2023-08-26 12:47:21,838 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 432 places, 475 transitions, 992 flow [2023-08-26 12:47:21,840 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:47:21,848 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 432 places, 475 transitions, 992 flow [2023-08-26 12:47:21,850 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 432 places, 475 transitions, 992 flow [2023-08-26 12:47:21,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 432 places, 475 transitions, 992 flow [2023-08-26 12:47:22,155 INFO L124 PetriNetUnfolderBase]: 194/1735 cut-off events. [2023-08-26 12:47:22,155 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-26 12:47:22,192 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 12:47:22,280 INFO L119 LiptonReduction]: Number of co-enabled transitions 103902 [2023-08-26 12:47:41,770 INFO L134 LiptonReduction]: Checked pairs total: 268760 [2023-08-26 12:47:41,771 INFO L136 LiptonReduction]: Total number of compositions: 426 [2023-08-26 12:47:41,783 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:47:41,788 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;@16638b0b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:47:41,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 113 error locations. [2023-08-26 12:47:41,789 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:47:41,789 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 12:47:41,789 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:47:41,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:47:41,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 12:47:41,790 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 110 more)] === [2023-08-26 12:47:41,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:47:41,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1848, now seen corresponding path program 1 times [2023-08-26 12:47:41,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:47:41,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806756283] [2023-08-26 12:47:41,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:47:41,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:47:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:47:41,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:47:41,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:47:41,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806756283] [2023-08-26 12:47:41,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806756283] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:47:41,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:47:41,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 12:47:41,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463986425] [2023-08-26 12:47:41,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:47:41,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 12:47:41,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:47:41,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 12:47:41,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 12:47:41,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 901 [2023-08-26 12:47:41,955 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 12:47:41,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:47:41,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 901 [2023-08-26 12:47:41,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:48:58,569 INFO L124 PetriNetUnfolderBase]: 805974/1174982 cut-off events. [2023-08-26 12:48:58,569 INFO L125 PetriNetUnfolderBase]: For 7564/7564 co-relation queries the response was YES. [2023-08-26 12:49:00,618 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 12:49:06,924 INFO L140 encePairwiseOnDemand]: 870/901 looper letters, 120 selfloop transitions, 0 changer transitions 0/160 dead transitions. [2023-08-26 12:49:06,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 160 transitions, 602 flow [2023-08-26 12:49:06,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 12:49:06,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 12:49:06,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1007 transitions. [2023-08-26 12:49:06,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5588235294117647 [2023-08-26 12:49:06,967 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1007 transitions. [2023-08-26 12:49:06,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1007 transitions. [2023-08-26 12:49:06,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:49:06,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1007 transitions. [2023-08-26 12:49:06,985 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 12:49:07,007 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 12:49:07,009 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 12:49:07,011 INFO L175 Difference]: Start difference. First operand has 161 places, 191 transitions, 424 flow. Second operand 2 states and 1007 transitions. [2023-08-26 12:49:07,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 160 transitions, 602 flow [2023-08-26 12:49:07,277 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 12:49:07,290 INFO L231 Difference]: Finished difference. Result has 154 places, 160 transitions, 362 flow [2023-08-26 12:49:07,292 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 12:49:07,296 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -7 predicate places. [2023-08-26 12:49:07,296 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 160 transitions, 362 flow [2023-08-26 12:49:07,297 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 12:49:07,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:49:07,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 12:49:07,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 12:49:07,297 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 110 more)] === [2023-08-26 12:49:07,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:49:07,317 INFO L85 PathProgramCache]: Analyzing trace with hash 58917, now seen corresponding path program 1 times [2023-08-26 12:49:07,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:49:07,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400350369] [2023-08-26 12:49:07,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:49:07,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:49:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:49:07,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:49:07,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:49:07,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400350369] [2023-08-26 12:49:07,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400350369] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:49:07,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:49:07,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:49:07,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645003205] [2023-08-26 12:49:07,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:49:07,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:49:07,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:49:07,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:49:07,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:49:07,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 901 [2023-08-26 12:49:07,818 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 12:49:07,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:49:07,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 901 [2023-08-26 12:49:07,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand