/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/pthread-wmm/safe022_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 12:16:52,115 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 12:16:52,179 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 12:16:52,183 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 12:16:52,184 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 12:16:52,207 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 12:16:52,208 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 12:16:52,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 12:16:52,212 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 12:16:52,215 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 12:16:52,215 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 12:16:52,215 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 12:16:52,215 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 12:16:52,216 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 12:16:52,217 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 12:16:52,217 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 12:16:52,217 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 12:16:52,217 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 12:16:52,217 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 12:16:52,217 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 12:16:52,217 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 12:16:52,218 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 12:16:52,218 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 12:16:52,219 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 12:16:52,219 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 12:16:52,219 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 12:16:52,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 12:16:52,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:16:52,219 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 12:16:52,219 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 12:16:52,220 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 12:16:52,220 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 12:16:52,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 12:16:52,220 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 12:16:52,220 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 12:16:52,221 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 12:16:52,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 12:16:52,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 12:16:52,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 12:16:52,458 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 12:16:52,463 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 12:16:52,464 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.i [2023-08-26 12:16:53,420 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 12:16:53,658 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 12:16:53,658 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.i [2023-08-26 12:16:53,667 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89670a546/70327cad298c4c45ae5a5fb64f88bd97/FLAG9cbf6a121 [2023-08-26 12:16:53,983 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89670a546/70327cad298c4c45ae5a5fb64f88bd97 [2023-08-26 12:16:53,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 12:16:53,986 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 12:16:53,987 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 12:16:53,987 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 12:16:53,989 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 12:16:53,989 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:16:53" (1/1) ... [2023-08-26 12:16:53,990 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74f45d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:16:53, skipping insertion in model container [2023-08-26 12:16:53,990 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:16:53" (1/1) ... [2023-08-26 12:16:54,017 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 12:16:54,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:16:54,201 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 12:16:54,226 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 12:16:54,227 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 12:16:54,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:16:54,278 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 12:16:54,279 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 12:16:54,284 INFO L206 MainTranslator]: Completed translation [2023-08-26 12:16:54,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:16:54 WrapperNode [2023-08-26 12:16:54,284 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 12:16:54,285 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 12:16:54,285 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 12:16:54,286 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 12:16:54,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:16:54" (1/1) ... [2023-08-26 12:16:54,313 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:16:54" (1/1) ... [2023-08-26 12:16:54,331 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 62 [2023-08-26 12:16:54,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 12:16:54,332 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 12:16:54,332 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 12:16:54,333 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 12:16:54,338 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:16:54" (1/1) ... [2023-08-26 12:16:54,339 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:16:54" (1/1) ... [2023-08-26 12:16:54,349 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:16:54" (1/1) ... [2023-08-26 12:16:54,350 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:16:54" (1/1) ... [2023-08-26 12:16:54,356 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:16:54" (1/1) ... [2023-08-26 12:16:54,357 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:16:54" (1/1) ... [2023-08-26 12:16:54,358 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:16:54" (1/1) ... [2023-08-26 12:16:54,359 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:16:54" (1/1) ... [2023-08-26 12:16:54,361 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 12:16:54,361 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 12:16:54,361 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 12:16:54,361 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 12:16:54,362 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:16:54" (1/1) ... [2023-08-26 12:16:54,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:16:54,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:16:54,400 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 12:16:54,407 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 12:16:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 12:16:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 12:16:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 12:16:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 12:16:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 12:16:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-26 12:16:54,428 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-26 12:16:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-26 12:16:54,428 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-26 12:16:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 12:16:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 12:16:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 12:16:54,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 12:16:54,429 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 12:16:54,529 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 12:16:54,532 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 12:16:54,688 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 12:16:54,692 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 12:16:54,693 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 12:16:54,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:16:54 BoogieIcfgContainer [2023-08-26 12:16:54,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 12:16:54,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 12:16:54,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 12:16:54,698 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 12:16:54,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:16:53" (1/3) ... [2023-08-26 12:16:54,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecf2c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:16:54, skipping insertion in model container [2023-08-26 12:16:54,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:16:54" (2/3) ... [2023-08-26 12:16:54,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecf2c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:16:54, skipping insertion in model container [2023-08-26 12:16:54,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:16:54" (3/3) ... [2023-08-26 12:16:54,700 INFO L112 eAbstractionObserver]: Analyzing ICFG safe022_tso.i [2023-08-26 12:16:54,719 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 12:16:54,719 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-26 12:16:54,719 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 12:16:54,792 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 12:16:54,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 76 transitions, 162 flow [2023-08-26 12:16:54,847 INFO L124 PetriNetUnfolderBase]: 3/74 cut-off events. [2023-08-26 12:16:54,847 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:16:54,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-08-26 12:16:54,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 76 transitions, 162 flow [2023-08-26 12:16:54,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 62 transitions, 130 flow [2023-08-26 12:16:54,855 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:16:54,861 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 62 transitions, 130 flow [2023-08-26 12:16:54,863 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 62 transitions, 130 flow [2023-08-26 12:16:54,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 62 transitions, 130 flow [2023-08-26 12:16:54,875 INFO L124 PetriNetUnfolderBase]: 1/62 cut-off events. [2023-08-26 12:16:54,875 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:16:54,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 62 events. 1/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2023-08-26 12:16:54,877 INFO L119 LiptonReduction]: Number of co-enabled transitions 612 [2023-08-26 12:16:56,381 INFO L134 LiptonReduction]: Checked pairs total: 1100 [2023-08-26 12:16:56,382 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-08-26 12:16:56,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:16:56,402 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;@49dae555, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:16:56,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-26 12:16:56,403 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:16:56,403 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 12:16:56,404 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:16:56,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:16:56,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 12:16:56,404 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 12:16:56,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:16:56,409 INFO L85 PathProgramCache]: Analyzing trace with hash 269, now seen corresponding path program 1 times [2023-08-26 12:16:56,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:16:56,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119661812] [2023-08-26 12:16:56,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:16:56,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:16:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:16:56,496 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 12:16:56,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:16:56,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119661812] [2023-08-26 12:16:56,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119661812] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:16:56,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:16:56,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 12:16:56,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631604819] [2023-08-26 12:16:56,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:16:56,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 12:16:56,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:16:56,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 12:16:56,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 12:16:56,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 136 [2023-08-26 12:16:56,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 16 transitions, 38 flow. Second operand has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 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 12:16:56,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:16:56,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 136 [2023-08-26 12:16:56,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:16:56,574 INFO L124 PetriNetUnfolderBase]: 32/73 cut-off events. [2023-08-26 12:16:56,574 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:16:56,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 73 events. 32/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 219 event pairs, 32 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 141. Up to 67 conditions per place. [2023-08-26 12:16:56,577 INFO L140 encePairwiseOnDemand]: 132/136 looper letters, 10 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2023-08-26 12:16:56,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 50 flow [2023-08-26 12:16:56,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 12:16:56,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 12:16:56,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 154 transitions. [2023-08-26 12:16:56,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5661764705882353 [2023-08-26 12:16:56,587 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 154 transitions. [2023-08-26 12:16:56,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 154 transitions. [2023-08-26 12:16:56,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:16:56,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 154 transitions. [2023-08-26 12:16:56,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 77.0) internal successors, (154), 2 states have internal predecessors, (154), 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 12:16:56,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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 12:16:56,599 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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 12:16:56,600 INFO L175 Difference]: Start difference. First operand has 23 places, 16 transitions, 38 flow. Second operand 2 states and 154 transitions. [2023-08-26 12:16:56,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 50 flow [2023-08-26 12:16:56,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 48 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:16:56,603 INFO L231 Difference]: Finished difference. Result has 18 places, 12 transitions, 28 flow [2023-08-26 12:16:56,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, 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=28, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2023-08-26 12:16:56,606 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -5 predicate places. [2023-08-26 12:16:56,607 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 12 transitions, 28 flow [2023-08-26 12:16:56,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 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 12:16:56,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:16:56,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 12:16:56,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 12:16:56,608 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 12:16:56,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:16:56,608 INFO L85 PathProgramCache]: Analyzing trace with hash -689689043, now seen corresponding path program 1 times [2023-08-26 12:16:56,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:16:56,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836380043] [2023-08-26 12:16:56,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:16:56,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:16:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:16:56,871 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 12:16:56,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:16:56,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836380043] [2023-08-26 12:16:56,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836380043] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:16:56,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:16:56,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:16:56,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754038724] [2023-08-26 12:16:56,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:16:56,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:16:56,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:16:56,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:16:56,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:16:56,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 136 [2023-08-26 12:16:56,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 12 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 12:16:56,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:16:56,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 136 [2023-08-26 12:16:56,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:16:56,917 INFO L124 PetriNetUnfolderBase]: 27/65 cut-off events. [2023-08-26 12:16:56,917 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:16:56,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 65 events. 27/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 186 event pairs, 9 based on Foata normal form. 3/67 useless extension candidates. Maximal degree in co-relation 131. Up to 40 conditions per place. [2023-08-26 12:16:56,918 INFO L140 encePairwiseOnDemand]: 133/136 looper letters, 11 selfloop transitions, 2 changer transitions 0/15 dead transitions. [2023-08-26 12:16:56,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 15 transitions, 60 flow [2023-08-26 12:16:56,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:16:56,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:16:56,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2023-08-26 12:16:56,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5269607843137255 [2023-08-26 12:16:56,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 215 transitions. [2023-08-26 12:16:56,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 215 transitions. [2023-08-26 12:16:56,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:16:56,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 215 transitions. [2023-08-26 12:16:56,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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 12:16:56,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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 12:16:56,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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 12:16:56,925 INFO L175 Difference]: Start difference. First operand has 18 places, 12 transitions, 28 flow. Second operand 3 states and 215 transitions. [2023-08-26 12:16:56,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 15 transitions, 60 flow [2023-08-26 12:16:56,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 15 transitions, 60 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:16:56,925 INFO L231 Difference]: Finished difference. Result has 21 places, 12 transitions, 36 flow [2023-08-26 12:16:56,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=12} [2023-08-26 12:16:56,926 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -2 predicate places. [2023-08-26 12:16:56,926 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 12 transitions, 36 flow [2023-08-26 12:16:56,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 12:16:56,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:16:56,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:16:56,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 12:16:56,927 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 12:16:56,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:16:56,927 INFO L85 PathProgramCache]: Analyzing trace with hash 94475019, now seen corresponding path program 1 times [2023-08-26 12:16:56,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:16:56,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404205657] [2023-08-26 12:16:56,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:16:56,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:16:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:16:57,002 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 12:16:57,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:16:57,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404205657] [2023-08-26 12:16:57,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404205657] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:16:57,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:16:57,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:16:57,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057426958] [2023-08-26 12:16:57,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:16:57,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:16:57,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:16:57,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:16:57,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:16:57,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 136 [2023-08-26 12:16:57,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 12 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 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 12:16:57,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:16:57,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 136 [2023-08-26 12:16:57,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:16:57,047 INFO L124 PetriNetUnfolderBase]: 56/111 cut-off events. [2023-08-26 12:16:57,047 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-26 12:16:57,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 111 events. 56/111 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 310 event pairs, 11 based on Foata normal form. 4/115 useless extension candidates. Maximal degree in co-relation 259. Up to 48 conditions per place. [2023-08-26 12:16:57,048 INFO L140 encePairwiseOnDemand]: 131/136 looper letters, 19 selfloop transitions, 6 changer transitions 0/25 dead transitions. [2023-08-26 12:16:57,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 25 transitions, 119 flow [2023-08-26 12:16:57,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 12:16:57,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 12:16:57,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 342 transitions. [2023-08-26 12:16:57,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029411764705882 [2023-08-26 12:16:57,050 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 342 transitions. [2023-08-26 12:16:57,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 342 transitions. [2023-08-26 12:16:57,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:16:57,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 342 transitions. [2023-08-26 12:16:57,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 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 12:16:57,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 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 12:16:57,052 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 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 12:16:57,053 INFO L175 Difference]: Start difference. First operand has 21 places, 12 transitions, 36 flow. Second operand 5 states and 342 transitions. [2023-08-26 12:16:57,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 25 transitions, 119 flow [2023-08-26 12:16:57,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 25 transitions, 113 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:16:57,053 INFO L231 Difference]: Finished difference. Result has 25 places, 16 transitions, 67 flow [2023-08-26 12:16:57,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=67, PETRI_PLACES=25, PETRI_TRANSITIONS=16} [2023-08-26 12:16:57,054 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2023-08-26 12:16:57,054 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 16 transitions, 67 flow [2023-08-26 12:16:57,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 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 12:16:57,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:16:57,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:16:57,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 12:16:57,055 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 12:16:57,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:16:57,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1366791225, now seen corresponding path program 1 times [2023-08-26 12:16:57,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:16:57,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184647781] [2023-08-26 12:16:57,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:16:57,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:16:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:16:57,127 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 12:16:57,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:16:57,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184647781] [2023-08-26 12:16:57,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184647781] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:16:57,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:16:57,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:16:57,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502371520] [2023-08-26 12:16:57,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:16:57,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:16:57,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:16:57,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:16:57,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:16:57,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 136 [2023-08-26 12:16:57,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 16 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:16:57,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:16:57,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 136 [2023-08-26 12:16:57,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:16:57,159 INFO L124 PetriNetUnfolderBase]: 39/94 cut-off events. [2023-08-26 12:16:57,159 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2023-08-26 12:16:57,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 94 events. 39/94 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 308 event pairs, 15 based on Foata normal form. 7/99 useless extension candidates. Maximal degree in co-relation 253. Up to 32 conditions per place. [2023-08-26 12:16:57,160 INFO L140 encePairwiseOnDemand]: 132/136 looper letters, 13 selfloop transitions, 3 changer transitions 6/23 dead transitions. [2023-08-26 12:16:57,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 23 transitions, 123 flow [2023-08-26 12:16:57,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:16:57,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:16:57,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 281 transitions. [2023-08-26 12:16:57,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5165441176470589 [2023-08-26 12:16:57,161 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 281 transitions. [2023-08-26 12:16:57,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 281 transitions. [2023-08-26 12:16:57,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:16:57,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 281 transitions. [2023-08-26 12:16:57,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 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 12:16:57,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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 12:16:57,164 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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 12:16:57,164 INFO L175 Difference]: Start difference. First operand has 25 places, 16 transitions, 67 flow. Second operand 4 states and 281 transitions. [2023-08-26 12:16:57,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 23 transitions, 123 flow [2023-08-26 12:16:57,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 123 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:16:57,165 INFO L231 Difference]: Finished difference. Result has 30 places, 12 transitions, 62 flow [2023-08-26 12:16:57,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=62, PETRI_PLACES=30, PETRI_TRANSITIONS=12} [2023-08-26 12:16:57,165 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 7 predicate places. [2023-08-26 12:16:57,165 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 12 transitions, 62 flow [2023-08-26 12:16:57,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:16:57,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:16:57,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:16:57,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 12:16:57,166 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 12:16:57,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:16:57,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1320013064, now seen corresponding path program 1 times [2023-08-26 12:16:57,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:16:57,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80829896] [2023-08-26 12:16:57,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:16:57,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:16:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:16:57,246 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 12:16:57,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:16:57,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80829896] [2023-08-26 12:16:57,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80829896] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:16:57,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:16:57,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:16:57,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819568045] [2023-08-26 12:16:57,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:16:57,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:16:57,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:16:57,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:16:57,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:16:57,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 136 [2023-08-26 12:16:57,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 12 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 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 12:16:57,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:16:57,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 136 [2023-08-26 12:16:57,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:16:57,279 INFO L124 PetriNetUnfolderBase]: 15/46 cut-off events. [2023-08-26 12:16:57,279 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-08-26 12:16:57,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 46 events. 15/46 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 111 event pairs, 4 based on Foata normal form. 4/49 useless extension candidates. Maximal degree in co-relation 145. Up to 16 conditions per place. [2023-08-26 12:16:57,279 INFO L140 encePairwiseOnDemand]: 131/136 looper letters, 14 selfloop transitions, 4 changer transitions 1/21 dead transitions. [2023-08-26 12:16:57,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 21 transitions, 134 flow [2023-08-26 12:16:57,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:16:57,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:16:57,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2023-08-26 12:16:57,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5091911764705882 [2023-08-26 12:16:57,282 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 277 transitions. [2023-08-26 12:16:57,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 277 transitions. [2023-08-26 12:16:57,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:16:57,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 277 transitions. [2023-08-26 12:16:57,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 69.25) internal successors, (277), 4 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 12:16:57,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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 12:16:57,284 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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 12:16:57,284 INFO L175 Difference]: Start difference. First operand has 30 places, 12 transitions, 62 flow. Second operand 4 states and 277 transitions. [2023-08-26 12:16:57,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 21 transitions, 134 flow [2023-08-26 12:16:57,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 96 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-08-26 12:16:57,285 INFO L231 Difference]: Finished difference. Result has 25 places, 14 transitions, 60 flow [2023-08-26 12:16:57,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=25, PETRI_TRANSITIONS=14} [2023-08-26 12:16:57,285 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2023-08-26 12:16:57,285 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 14 transitions, 60 flow [2023-08-26 12:16:57,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 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 12:16:57,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:16:57,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:16:57,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 12:16:57,286 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 12:16:57,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:16:57,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1988505661, now seen corresponding path program 1 times [2023-08-26 12:16:57,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:16:57,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334157961] [2023-08-26 12:16:57,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:16:57,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:16:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:16:57,389 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 12:16:57,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:16:57,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334157961] [2023-08-26 12:16:57,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334157961] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:16:57,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:16:57,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:16:57,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438609812] [2023-08-26 12:16:57,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:16:57,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 12:16:57,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:16:57,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 12:16:57,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 12:16:57,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 136 [2023-08-26 12:16:57,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 14 transitions, 60 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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 12:16:57,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:16:57,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 136 [2023-08-26 12:16:57,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:16:57,421 INFO L124 PetriNetUnfolderBase]: 8/30 cut-off events. [2023-08-26 12:16:57,421 INFO L125 PetriNetUnfolderBase]: For 27/29 co-relation queries the response was YES. [2023-08-26 12:16:57,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 30 events. 8/30 cut-off events. For 27/29 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 2 based on Foata normal form. 5/34 useless extension candidates. Maximal degree in co-relation 96. Up to 12 conditions per place. [2023-08-26 12:16:57,422 INFO L140 encePairwiseOnDemand]: 131/136 looper letters, 9 selfloop transitions, 6 changer transitions 1/18 dead transitions. [2023-08-26 12:16:57,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 107 flow [2023-08-26 12:16:57,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 12:16:57,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 12:16:57,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2023-08-26 12:16:57,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4970588235294118 [2023-08-26 12:16:57,423 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 338 transitions. [2023-08-26 12:16:57,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 338 transitions. [2023-08-26 12:16:57,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:16:57,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 338 transitions. [2023-08-26 12:16:57,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 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 12:16:57,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 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 12:16:57,425 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 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 12:16:57,425 INFO L175 Difference]: Start difference. First operand has 25 places, 14 transitions, 60 flow. Second operand 5 states and 338 transitions. [2023-08-26 12:16:57,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 107 flow [2023-08-26 12:16:57,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 18 transitions, 98 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 12:16:57,425 INFO L231 Difference]: Finished difference. Result has 29 places, 14 transitions, 76 flow [2023-08-26 12:16:57,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=76, PETRI_PLACES=29, PETRI_TRANSITIONS=14} [2023-08-26 12:16:57,426 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 6 predicate places. [2023-08-26 12:16:57,426 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 14 transitions, 76 flow [2023-08-26 12:16:57,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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 12:16:57,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:16:57,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:16:57,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 12:16:57,427 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 12:16:57,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:16:57,427 INFO L85 PathProgramCache]: Analyzing trace with hash -274238481, now seen corresponding path program 1 times [2023-08-26 12:16:57,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:16:57,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278932850] [2023-08-26 12:16:57,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:16:57,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:16:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:16:57,481 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 12:16:57,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:16:57,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278932850] [2023-08-26 12:16:57,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278932850] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:16:57,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:16:57,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:16:57,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138407003] [2023-08-26 12:16:57,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:16:57,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:16:57,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:16:57,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:16:57,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:16:57,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 136 [2023-08-26 12:16:57,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 14 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 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 12:16:57,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:16:57,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 136 [2023-08-26 12:16:57,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:16:57,519 INFO L124 PetriNetUnfolderBase]: 7/27 cut-off events. [2023-08-26 12:16:57,520 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-08-26 12:16:57,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 27 events. 7/27 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 1 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 92. Up to 17 conditions per place. [2023-08-26 12:16:57,520 INFO L140 encePairwiseOnDemand]: 131/136 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2023-08-26 12:16:57,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 16 transitions, 110 flow [2023-08-26 12:16:57,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 12:16:57,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 12:16:57,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 329 transitions. [2023-08-26 12:16:57,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4838235294117647 [2023-08-26 12:16:57,522 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 329 transitions. [2023-08-26 12:16:57,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 329 transitions. [2023-08-26 12:16:57,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:16:57,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 329 transitions. [2023-08-26 12:16:57,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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 12:16:57,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 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 12:16:57,524 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 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 12:16:57,524 INFO L175 Difference]: Start difference. First operand has 29 places, 14 transitions, 76 flow. Second operand 5 states and 329 transitions. [2023-08-26 12:16:57,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 16 transitions, 110 flow [2023-08-26 12:16:57,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 16 transitions, 79 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-26 12:16:57,524 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2023-08-26 12:16:57,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2023-08-26 12:16:57,525 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 1 predicate places. [2023-08-26 12:16:57,525 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2023-08-26 12:16:57,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 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 12:16:57,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 7 remaining) [2023-08-26 12:16:57,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2023-08-26 12:16:57,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2023-08-26 12:16:57,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2023-08-26 12:16:57,528 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (2 of 7 remaining) [2023-08-26 12:16:57,528 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-26 12:16:57,528 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2023-08-26 12:16:57,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 12:16:57,528 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:16:57,530 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 12:16:57,530 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 12:16:57,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:16:57 BasicIcfg [2023-08-26 12:16:57,532 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 12:16:57,532 INFO L158 Benchmark]: Toolchain (without parser) took 3546.22ms. Allocated memory was 348.1MB in the beginning and 461.4MB in the end (delta: 113.2MB). Free memory was 322.8MB in the beginning and 433.7MB in the end (delta: -111.0MB). Peak memory consumption was 154.4MB. Max. memory is 16.0GB. [2023-08-26 12:16:57,533 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 348.1MB. Free memory is still 324.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:16:57,533 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.80ms. Allocated memory is still 348.1MB. Free memory was 322.4MB in the beginning and 301.8MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-26 12:16:57,533 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.49ms. Allocated memory is still 348.1MB. Free memory was 301.8MB in the beginning and 299.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:16:57,533 INFO L158 Benchmark]: Boogie Preprocessor took 28.25ms. Allocated memory is still 348.1MB. Free memory was 299.7MB in the beginning and 298.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:16:57,534 INFO L158 Benchmark]: RCFGBuilder took 333.27ms. Allocated memory is still 348.1MB. Free memory was 298.3MB in the beginning and 285.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-26 12:16:57,534 INFO L158 Benchmark]: TraceAbstraction took 2836.09ms. Allocated memory was 348.1MB in the beginning and 461.4MB in the end (delta: 113.2MB). Free memory was 284.3MB in the beginning and 433.7MB in the end (delta: -149.5MB). Peak memory consumption was 116.6MB. Max. memory is 16.0GB. [2023-08-26 12:16:57,535 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 348.1MB. Free memory is still 324.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 297.80ms. Allocated memory is still 348.1MB. Free memory was 322.4MB in the beginning and 301.8MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.49ms. Allocated memory is still 348.1MB. Free memory was 301.8MB in the beginning and 299.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.25ms. Allocated memory is still 348.1MB. Free memory was 299.7MB in the beginning and 298.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 333.27ms. Allocated memory is still 348.1MB. Free memory was 298.3MB in the beginning and 285.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 2836.09ms. Allocated memory was 348.1MB in the beginning and 461.4MB in the end (delta: 113.2MB). Free memory was 284.3MB in the beginning and 433.7MB in the end (delta: -149.5MB). Peak memory consumption was 116.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 68 PlacesBefore, 23 PlacesAfterwards, 62 TransitionsBefore, 16 TransitionsAfterwards, 612 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 1100 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 654, independent: 599, independent conditional: 0, independent unconditional: 599, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 345, independent: 331, independent conditional: 0, independent unconditional: 331, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 654, independent: 268, independent conditional: 0, independent unconditional: 268, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 345, unknown conditional: 0, unknown unconditional: 345] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 15, Positive conditional cache size: 0, Positive unconditional cache size: 15, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 90 locations, 7 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: 2.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 66 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 141 IncrementalHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 3 mSDtfsCounter, 141 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=6, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 171 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 12:16:57,546 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...