/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 15:26:00,172 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 15:26:00,220 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 15:26:00,224 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 15:26:00,224 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 15:26:00,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 15:26:00,243 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 15:26:00,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 15:26:00,244 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 15:26:00,245 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 15:26:00,245 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 15:26:00,245 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 15:26:00,246 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 15:26:00,246 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 15:26:00,246 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 15:26:00,247 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 15:26:00,247 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 15:26:00,247 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 15:26:00,248 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 15:26:00,248 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 15:26:00,251 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 15:26:00,252 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 15:26:00,252 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 15:26:00,253 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 15:26:00,256 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 15:26:00,256 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 15:26:00,256 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 15:26:00,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:26:00,257 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 15:26:00,257 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 15:26:00,258 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 15:26:00,258 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 15:26:00,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 15:26:00,259 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 15:26:00,259 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 15:26:00,259 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 15:26:00,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 15:26:00,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 15:26:00,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 15:26:00,580 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 15:26:00,580 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 15:26:00,585 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i [2023-08-26 15:26:01,871 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 15:26:02,252 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 15:26:02,253 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i [2023-08-26 15:26:02,276 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8ce8dc5a/8d7209777ffe41c294bf0961bcd92cf6/FLAG00dcf3133 [2023-08-26 15:26:02,290 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8ce8dc5a/8d7209777ffe41c294bf0961bcd92cf6 [2023-08-26 15:26:02,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 15:26:02,298 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 15:26:02,301 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 15:26:02,301 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 15:26:02,304 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 15:26:02,305 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:26:02" (1/1) ... [2023-08-26 15:26:02,305 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67bc354c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:26:02, skipping insertion in model container [2023-08-26 15:26:02,305 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:26:02" (1/1) ... [2023-08-26 15:26:02,356 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 15:26:02,912 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:26:02,933 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 15:26:02,960 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-26 15:26:02,961 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-26 15:26:02,967 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [729] [2023-08-26 15:26:03,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:26:03,163 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 15:26:03,163 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 15:26:03,169 INFO L206 MainTranslator]: Completed translation [2023-08-26 15:26:03,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:26:03 WrapperNode [2023-08-26 15:26:03,170 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 15:26:03,171 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 15:26:03,172 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 15:26:03,172 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 15:26:03,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:26:03" (1/1) ... [2023-08-26 15:26:03,222 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:26:03" (1/1) ... [2023-08-26 15:26:03,255 INFO L138 Inliner]: procedures = 482, calls = 34, calls flagged for inlining = 9, calls inlined = 12, statements flattened = 102 [2023-08-26 15:26:03,256 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 15:26:03,257 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 15:26:03,257 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 15:26:03,257 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 15:26:03,264 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:26:03" (1/1) ... [2023-08-26 15:26:03,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:26:03" (1/1) ... [2023-08-26 15:26:03,271 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:26:03" (1/1) ... [2023-08-26 15:26:03,272 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:26:03" (1/1) ... [2023-08-26 15:26:03,279 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:26:03" (1/1) ... [2023-08-26 15:26:03,282 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:26:03" (1/1) ... [2023-08-26 15:26:03,297 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:26:03" (1/1) ... [2023-08-26 15:26:03,299 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:26:03" (1/1) ... [2023-08-26 15:26:03,304 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 15:26:03,304 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 15:26:03,305 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 15:26:03,305 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 15:26:03,305 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:26:03" (1/1) ... [2023-08-26 15:26:03,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:26:03,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 15:26:03,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 15:26:03,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 15:26:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 15:26:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 15:26:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 15:26:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 15:26:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 15:26:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 15:26:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-26 15:26:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 15:26:03,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 15:26:03,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 15:26:03,376 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 15:26:03,376 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 15:26:03,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 15:26:03,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 15:26:03,378 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 15:26:03,630 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 15:26:03,632 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 15:26:03,762 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 15:26:03,790 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 15:26:03,790 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 15:26:03,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:26:03 BoogieIcfgContainer [2023-08-26 15:26:03,792 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 15:26:03,794 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 15:26:03,794 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 15:26:03,799 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 15:26:03,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:26:02" (1/3) ... [2023-08-26 15:26:03,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753fb175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:26:03, skipping insertion in model container [2023-08-26 15:26:03,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:26:03" (2/3) ... [2023-08-26 15:26:03,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753fb175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:26:03, skipping insertion in model container [2023-08-26 15:26:03,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:26:03" (3/3) ... [2023-08-26 15:26:03,802 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2023-08-26 15:26:03,817 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 15:26:03,818 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-26 15:26:03,818 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 15:26:03,880 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 15:26:03,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 113 transitions, 234 flow [2023-08-26 15:26:03,956 INFO L124 PetriNetUnfolderBase]: 7/126 cut-off events. [2023-08-26 15:26:03,956 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 15:26:03,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 126 events. 7/126 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 217 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 75. Up to 3 conditions per place. [2023-08-26 15:26:03,962 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 113 transitions, 234 flow [2023-08-26 15:26:03,968 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 98 transitions, 202 flow [2023-08-26 15:26:03,989 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:26:04,005 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 98 transitions, 202 flow [2023-08-26 15:26:04,009 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 98 transitions, 202 flow [2023-08-26 15:26:04,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 98 transitions, 202 flow [2023-08-26 15:26:04,046 INFO L124 PetriNetUnfolderBase]: 4/107 cut-off events. [2023-08-26 15:26:04,046 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 15:26:04,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 107 events. 4/107 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 147 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2023-08-26 15:26:04,048 INFO L119 LiptonReduction]: Number of co-enabled transitions 210 [2023-08-26 15:26:07,513 INFO L134 LiptonReduction]: Checked pairs total: 312 [2023-08-26 15:26:07,514 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-26 15:26:07,532 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 15:26:07,537 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;@2956d274, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:26:07,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-26 15:26:07,538 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:26:07,539 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 15:26:07,539 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:26:07,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:26:07,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 15:26:07,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-26 15:26:07,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:26:07,544 INFO L85 PathProgramCache]: Analyzing trace with hash 453, now seen corresponding path program 1 times [2023-08-26 15:26:07,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:26:07,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234297832] [2023-08-26 15:26:07,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:26:07,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:26:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:26:07,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 15:26:07,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:26:07,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234297832] [2023-08-26 15:26:07,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234297832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:26:07,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:26:07,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 15:26:07,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016658417] [2023-08-26 15:26:07,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:26:07,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 15:26:07,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:26:07,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 15:26:07,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 15:26:07,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 231 [2023-08-26 15:26:07,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 18 transitions, 42 flow. Second operand has 2 states, 2 states have (on average 100.5) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:26:07,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:26:07,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 231 [2023-08-26 15:26:07,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:26:07,823 INFO L124 PetriNetUnfolderBase]: 6/24 cut-off events. [2023-08-26 15:26:07,823 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 15:26:07,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 24 events. 6/24 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 42 event pairs, 6 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 38. Up to 23 conditions per place. [2023-08-26 15:26:07,824 INFO L140 encePairwiseOnDemand]: 225/231 looper letters, 10 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2023-08-26 15:26:07,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 12 transitions, 50 flow [2023-08-26 15:26:07,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 15:26:07,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 15:26:07,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 216 transitions. [2023-08-26 15:26:07,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2023-08-26 15:26:07,842 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 216 transitions. [2023-08-26 15:26:07,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 216 transitions. [2023-08-26 15:26:07,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:26:07,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 216 transitions. [2023-08-26 15:26:07,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 108.0) internal successors, (216), 2 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:26:07,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:26:07,857 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:26:07,858 INFO L175 Difference]: Start difference. First operand has 21 places, 18 transitions, 42 flow. Second operand 2 states and 216 transitions. [2023-08-26 15:26:07,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 12 transitions, 50 flow [2023-08-26 15:26:07,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 12 transitions, 46 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 15:26:07,862 INFO L231 Difference]: Finished difference. Result has 15 places, 12 transitions, 26 flow [2023-08-26 15:26:07,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=26, PETRI_PLACES=15, PETRI_TRANSITIONS=12} [2023-08-26 15:26:07,866 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -6 predicate places. [2023-08-26 15:26:07,866 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 12 transitions, 26 flow [2023-08-26 15:26:07,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 100.5) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:26:07,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:26:07,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 15:26:07,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 15:26:07,867 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-26 15:26:07,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:26:07,868 INFO L85 PathProgramCache]: Analyzing trace with hash 13924330, now seen corresponding path program 1 times [2023-08-26 15:26:07,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:26:07,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928267548] [2023-08-26 15:26:07,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:26:07,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:26:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:26:08,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 15:26:08,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:26:08,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928267548] [2023-08-26 15:26:08,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928267548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:26:08,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:26:08,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 15:26:08,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543452783] [2023-08-26 15:26:08,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:26:08,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:26:08,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:26:08,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:26:08,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:26:08,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 231 [2023-08-26 15:26:08,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 12 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:26:08,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:26:08,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 231 [2023-08-26 15:26:08,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:26:08,077 INFO L124 PetriNetUnfolderBase]: 4/29 cut-off events. [2023-08-26 15:26:08,077 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:26:08,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 29 events. 4/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 82 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 55. Up to 14 conditions per place. [2023-08-26 15:26:08,078 INFO L140 encePairwiseOnDemand]: 227/231 looper letters, 13 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2023-08-26 15:26:08,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 18 transitions, 71 flow [2023-08-26 15:26:08,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:26:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:26:08,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2023-08-26 15:26:08,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4184704184704185 [2023-08-26 15:26:08,085 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2023-08-26 15:26:08,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2023-08-26 15:26:08,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:26:08,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2023-08-26 15:26:08,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:26:08,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:26:08,090 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:26:08,090 INFO L175 Difference]: Start difference. First operand has 15 places, 12 transitions, 26 flow. Second operand 3 states and 290 transitions. [2023-08-26 15:26:08,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 18 transitions, 71 flow [2023-08-26 15:26:08,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 18 transitions, 71 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 15:26:08,094 INFO L231 Difference]: Finished difference. Result has 19 places, 14 transitions, 48 flow [2023-08-26 15:26:08,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=19, PETRI_TRANSITIONS=14} [2023-08-26 15:26:08,095 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -2 predicate places. [2023-08-26 15:26:08,096 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 14 transitions, 48 flow [2023-08-26 15:26:08,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:26:08,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:26:08,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 15:26:08,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 15:26:08,102 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-26 15:26:08,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:26:08,102 INFO L85 PathProgramCache]: Analyzing trace with hash 431660250, now seen corresponding path program 1 times [2023-08-26 15:26:08,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:26:08,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760376742] [2023-08-26 15:26:08,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:26:08,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:26:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:26:08,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 15:26:08,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:26:08,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760376742] [2023-08-26 15:26:08,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760376742] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:26:08,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:26:08,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 15:26:08,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595896296] [2023-08-26 15:26:08,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:26:08,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:26:08,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:26:08,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:26:08,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:26:08,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 231 [2023-08-26 15:26:08,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:26:08,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:26:08,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 231 [2023-08-26 15:26:08,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:26:08,295 INFO L124 PetriNetUnfolderBase]: 3/25 cut-off events. [2023-08-26 15:26:08,295 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-26 15:26:08,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 25 events. 3/25 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 53 event pairs, 2 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 67. Up to 23 conditions per place. [2023-08-26 15:26:08,297 INFO L140 encePairwiseOnDemand]: 229/231 looper letters, 11 selfloop transitions, 1 changer transitions 0/13 dead transitions. [2023-08-26 15:26:08,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 13 transitions, 70 flow [2023-08-26 15:26:08,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:26:08,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:26:08,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2023-08-26 15:26:08,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37518037518037517 [2023-08-26 15:26:08,298 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2023-08-26 15:26:08,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2023-08-26 15:26:08,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:26:08,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2023-08-26 15:26:08,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:26:08,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:26:08,302 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:26:08,302 INFO L175 Difference]: Start difference. First operand has 19 places, 14 transitions, 48 flow. Second operand 3 states and 260 transitions. [2023-08-26 15:26:08,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 13 transitions, 70 flow [2023-08-26 15:26:08,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 13 transitions, 64 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 15:26:08,303 INFO L231 Difference]: Finished difference. Result has 18 places, 13 transitions, 42 flow [2023-08-26 15:26:08,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=18, PETRI_TRANSITIONS=13} [2023-08-26 15:26:08,304 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -3 predicate places. [2023-08-26 15:26:08,307 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 13 transitions, 42 flow [2023-08-26 15:26:08,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:26:08,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:26:08,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 15:26:08,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 15:26:08,308 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-26 15:26:08,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:26:08,308 INFO L85 PathProgramCache]: Analyzing trace with hash 431660490, now seen corresponding path program 1 times [2023-08-26 15:26:08,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:26:08,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030792702] [2023-08-26 15:26:08,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:26:08,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:26:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:26:08,337 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:26:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:26:08,372 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:26:08,372 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:26:08,373 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONASSERT (10 of 11 remaining) [2023-08-26 15:26:08,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (9 of 11 remaining) [2023-08-26 15:26:08,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-08-26 15:26:08,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-08-26 15:26:08,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (6 of 11 remaining) [2023-08-26 15:26:08,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-08-26 15:26:08,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 11 remaining) [2023-08-26 15:26:08,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 11 remaining) [2023-08-26 15:26:08,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 11 remaining) [2023-08-26 15:26:08,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONASSERT (1 of 11 remaining) [2023-08-26 15:26:08,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-08-26 15:26:08,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 15:26:08,378 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-26 15:26:08,382 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 15:26:08,382 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 15:26:08,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:26:08 BasicIcfg [2023-08-26 15:26:08,407 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 15:26:08,410 INFO L158 Benchmark]: Toolchain (without parser) took 6110.14ms. Allocated memory was 383.8MB in the beginning and 503.3MB in the end (delta: 119.5MB). Free memory was 357.7MB in the beginning and 433.7MB in the end (delta: -76.0MB). Peak memory consumption was 46.3MB. Max. memory is 16.0GB. [2023-08-26 15:26:08,410 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 383.8MB. Free memory is still 360.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 15:26:08,410 INFO L158 Benchmark]: CACSL2BoogieTranslator took 869.03ms. Allocated memory is still 383.8MB. Free memory was 357.3MB in the beginning and 348.5MB in the end (delta: 8.8MB). Peak memory consumption was 57.3MB. Max. memory is 16.0GB. [2023-08-26 15:26:08,411 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.31ms. Allocated memory is still 383.8MB. Free memory was 348.5MB in the beginning and 345.3MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 15:26:08,411 INFO L158 Benchmark]: Boogie Preprocessor took 47.18ms. Allocated memory is still 383.8MB. Free memory was 345.3MB in the beginning and 343.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 15:26:08,411 INFO L158 Benchmark]: RCFGBuilder took 487.66ms. Allocated memory is still 383.8MB. Free memory was 343.2MB in the beginning and 320.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-26 15:26:08,415 INFO L158 Benchmark]: TraceAbstraction took 4613.51ms. Allocated memory was 383.8MB in the beginning and 503.3MB in the end (delta: 119.5MB). Free memory was 319.2MB in the beginning and 433.7MB in the end (delta: -114.5MB). Peak memory consumption was 5.7MB. Max. memory is 16.0GB. [2023-08-26 15:26:08,416 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 383.8MB. Free memory is still 360.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 869.03ms. Allocated memory is still 383.8MB. Free memory was 357.3MB in the beginning and 348.5MB in the end (delta: 8.8MB). Peak memory consumption was 57.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 84.31ms. Allocated memory is still 383.8MB. Free memory was 348.5MB in the beginning and 345.3MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 47.18ms. Allocated memory is still 383.8MB. Free memory was 345.3MB in the beginning and 343.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 487.66ms. Allocated memory is still 383.8MB. Free memory was 343.2MB in the beginning and 320.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 4613.51ms. Allocated memory was 383.8MB in the beginning and 503.3MB in the end (delta: 119.5MB). Free memory was 319.2MB in the beginning and 433.7MB in the end (delta: -114.5MB). Peak memory consumption was 5.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] - GenericResultAtLocation [Line: 729]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [729] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 97 PlacesBefore, 21 PlacesAfterwards, 98 TransitionsBefore, 18 TransitionsAfterwards, 210 CoEnabledTransitionPairs, 7 FixpointIterations, 83 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 5 ConcurrentYvCompositions, 4 ChoiceCompositions, 118 TotalNumberOfCompositions, 312 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 257, independent: 218, independent conditional: 0, independent unconditional: 218, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 127, independent: 112, independent conditional: 0, independent unconditional: 112, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 257, independent: 106, independent conditional: 0, independent unconditional: 106, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 127, unknown conditional: 0, unknown unconditional: 127] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 1693]: assertion can be violated assertion can be violated We found a FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1734] CALL 0 module_init() [L1709] 0 pdev = 1 [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={4:0}, pdev=1, pthread_create(&t1, ((void *)0), thread1, ((void *)0))=-1, t1={3:0}] [L1714] 0 pdev = 2 VAL [arg={0:0}, mutex={4:0}, pdev=2, t1={3:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1717] CALL 0 ldv_assert(pdev==2) [L1695] COND TRUE 0 !expression [L1695] CALL 0 reach_error() [L1693] COND FALSE 0 !(0) [L1693] 0 __assert_fail ("0", "race-1_2-join.c", 10, __extension__ __PRETTY_FUNCTION__) VAL [\result={0:0}, arg={0:0}, arg={0:0}, mutex={4:0}, pdev=6, t1={3:0}] - UnprovableResult [Line: 1693]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1693]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1693]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 115 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.5s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 0 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=2, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-26 15:26:08,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...