/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/safe001_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 12:09:55,220 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 12:09:55,313 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 12:09:55,319 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 12:09:55,320 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 12:09:55,355 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 12:09:55,356 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 12:09:55,356 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 12:09:55,357 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 12:09:55,360 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 12:09:55,360 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 12:09:55,361 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 12:09:55,361 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 12:09:55,362 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 12:09:55,362 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 12:09:55,362 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 12:09:55,363 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 12:09:55,363 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 12:09:55,363 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 12:09:55,363 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 12:09:55,364 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 12:09:55,364 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 12:09:55,365 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 12:09:55,365 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 12:09:55,366 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 12:09:55,366 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 12:09:55,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 12:09:55,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:09:55,366 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 12:09:55,367 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 12:09:55,367 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 12:09:55,368 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 12:09:55,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 12:09:55,368 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 12:09:55,368 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 12:09:55,368 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 12:09:55,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 12:09:55,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 12:09:55,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 12:09:55,726 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 12:09:55,728 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 12:09:55,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.i [2023-08-26 12:09:56,919 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 12:09:57,238 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 12:09:57,238 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.i [2023-08-26 12:09:57,261 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2c885fb2/b7bc2eb153cd440a8bbd1d72dffbd8ea/FLAGd70a8a258 [2023-08-26 12:09:57,275 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2c885fb2/b7bc2eb153cd440a8bbd1d72dffbd8ea [2023-08-26 12:09:57,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 12:09:57,281 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 12:09:57,283 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 12:09:57,284 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 12:09:57,286 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 12:09:57,287 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:09:57" (1/1) ... [2023-08-26 12:09:57,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47857e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:09:57, skipping insertion in model container [2023-08-26 12:09:57,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:09:57" (1/1) ... [2023-08-26 12:09:57,338 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 12:09:57,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:09:57,649 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 12:09:57,673 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 12:09:57,675 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 12:09:57,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:09:57,732 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 12:09:57,733 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 12:09:57,739 INFO L206 MainTranslator]: Completed translation [2023-08-26 12:09:57,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:09:57 WrapperNode [2023-08-26 12:09:57,740 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 12:09:57,741 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 12:09:57,741 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 12:09:57,741 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 12:09:57,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:09:57" (1/1) ... [2023-08-26 12:09:57,766 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:09:57" (1/1) ... [2023-08-26 12:09:57,784 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2023-08-26 12:09:57,785 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 12:09:57,785 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 12:09:57,786 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 12:09:57,786 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 12:09:57,791 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:09:57" (1/1) ... [2023-08-26 12:09:57,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:09:57" (1/1) ... [2023-08-26 12:09:57,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:09:57" (1/1) ... [2023-08-26 12:09:57,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:09:57" (1/1) ... [2023-08-26 12:09:57,800 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:09:57" (1/1) ... [2023-08-26 12:09:57,801 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:09:57" (1/1) ... [2023-08-26 12:09:57,803 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:09:57" (1/1) ... [2023-08-26 12:09:57,804 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:09:57" (1/1) ... [2023-08-26 12:09:57,806 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 12:09:57,807 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 12:09:57,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 12:09:57,807 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 12:09:57,808 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:09:57" (1/1) ... [2023-08-26 12:09:57,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:09:57,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:09:57,845 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 12:09:57,857 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 12:09:57,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 12:09:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 12:09:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 12:09:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 12:09:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 12:09:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-26 12:09:57,888 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-26 12:09:57,888 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-26 12:09:57,888 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-26 12:09:57,888 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-26 12:09:57,888 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-26 12:09:57,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 12:09:57,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 12:09:57,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 12:09:57,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 12:09:57,891 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 12:09:58,022 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 12:09:58,024 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 12:09:58,275 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 12:09:58,281 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 12:09:58,281 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 12:09:58,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:09:58 BoogieIcfgContainer [2023-08-26 12:09:58,284 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 12:09:58,286 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 12:09:58,286 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 12:09:58,288 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 12:09:58,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:09:57" (1/3) ... [2023-08-26 12:09:58,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa21f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:09:58, skipping insertion in model container [2023-08-26 12:09:58,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:09:57" (2/3) ... [2023-08-26 12:09:58,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa21f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:09:58, skipping insertion in model container [2023-08-26 12:09:58,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:09:58" (3/3) ... [2023-08-26 12:09:58,291 INFO L112 eAbstractionObserver]: Analyzing ICFG safe001_tso.i [2023-08-26 12:09:58,308 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 12:09:58,309 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-26 12:09:58,310 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 12:09:58,387 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 12:09:58,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 94 transitions, 203 flow [2023-08-26 12:09:58,507 INFO L124 PetriNetUnfolderBase]: 3/91 cut-off events. [2023-08-26 12:09:58,507 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:09:58,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-08-26 12:09:58,512 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 94 transitions, 203 flow [2023-08-26 12:09:58,517 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 77 transitions, 163 flow [2023-08-26 12:09:58,521 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:09:58,533 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 77 transitions, 163 flow [2023-08-26 12:09:58,537 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 77 transitions, 163 flow [2023-08-26 12:09:58,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 77 transitions, 163 flow [2023-08-26 12:09:58,564 INFO L124 PetriNetUnfolderBase]: 1/77 cut-off events. [2023-08-26 12:09:58,564 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:09:58,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 1/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-26 12:09:58,567 INFO L119 LiptonReduction]: Number of co-enabled transitions 1188 [2023-08-26 12:10:00,808 INFO L134 LiptonReduction]: Checked pairs total: 2165 [2023-08-26 12:10:00,809 INFO L136 LiptonReduction]: Total number of compositions: 71 [2023-08-26 12:10:00,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:10:00,826 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;@73f46be4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:10:00,827 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-26 12:10:00,828 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:10:00,828 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 12:10:00,828 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:10:00,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:10:00,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 12:10:00,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 12:10:00,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:10:00,834 INFO L85 PathProgramCache]: Analyzing trace with hash 323, now seen corresponding path program 1 times [2023-08-26 12:10:00,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:10:00,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968722698] [2023-08-26 12:10:00,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:10:00,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:10:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:10:00,932 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 12:10:00,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:10:00,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968722698] [2023-08-26 12:10:00,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968722698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:10:00,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:10:00,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 12:10:00,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233624608] [2023-08-26 12:10:00,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:10:00,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 12:10:00,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:10:00,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 12:10:00,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 12:10:00,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 165 [2023-08-26 12:10:00,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 55 flow. Second operand has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 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 12:10:00,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:10:00,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 165 [2023-08-26 12:10:00,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:10:01,052 INFO L124 PetriNetUnfolderBase]: 164/284 cut-off events. [2023-08-26 12:10:01,052 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 12:10:01,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 284 events. 164/284 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1138 event pairs, 164 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 574. Up to 271 conditions per place. [2023-08-26 12:10:01,057 INFO L140 encePairwiseOnDemand]: 159/165 looper letters, 14 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-08-26 12:10:01,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 71 flow [2023-08-26 12:10:01,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 12:10:01,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 12:10:01,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 194 transitions. [2023-08-26 12:10:01,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5878787878787879 [2023-08-26 12:10:01,075 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 194 transitions. [2023-08-26 12:10:01,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 194 transitions. [2023-08-26 12:10:01,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:10:01,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 194 transitions. [2023-08-26 12:10:01,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 97.0) internal successors, (194), 2 states have internal predecessors, (194), 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 12:10:01,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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 12:10:01,093 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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 12:10:01,094 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 55 flow. Second operand 2 states and 194 transitions. [2023-08-26 12:10:01,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 71 flow [2023-08-26 12:10:01,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 68 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 12:10:01,099 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 40 flow [2023-08-26 12:10:01,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-08-26 12:10:01,105 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -8 predicate places. [2023-08-26 12:10:01,105 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 40 flow [2023-08-26 12:10:01,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 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 12:10:01,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:10:01,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:10:01,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 12:10:01,107 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 12:10:01,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:10:01,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1678195601, now seen corresponding path program 1 times [2023-08-26 12:10:01,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:10:01,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473706122] [2023-08-26 12:10:01,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:10:01,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:10:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:10:01,461 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 12:10:01,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:10:01,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473706122] [2023-08-26 12:10:01,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473706122] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:10:01,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:10:01,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:10:01,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272665841] [2023-08-26 12:10:01,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:10:01,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:10:01,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:10:01,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:10:01,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:10:01,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 165 [2023-08-26 12:10:01,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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 12:10:01,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:10:01,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 165 [2023-08-26 12:10:01,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:10:01,565 INFO L124 PetriNetUnfolderBase]: 562/906 cut-off events. [2023-08-26 12:10:01,565 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:10:01,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1865 conditions, 906 events. 562/906 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3913 event pairs, 240 based on Foata normal form. 53/959 useless extension candidates. Maximal degree in co-relation 1862. Up to 478 conditions per place. [2023-08-26 12:10:01,572 INFO L140 encePairwiseOnDemand]: 157/165 looper letters, 24 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2023-08-26 12:10:01,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 31 transitions, 134 flow [2023-08-26 12:10:01,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:10:01,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:10:01,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2023-08-26 12:10:01,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2023-08-26 12:10:01,584 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2023-08-26 12:10:01,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2023-08-26 12:10:01,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:10:01,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2023-08-26 12:10:01,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:10:01,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 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 12:10:01,587 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 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 12:10:01,587 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states and 260 transitions. [2023-08-26 12:10:01,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 31 transitions, 134 flow [2023-08-26 12:10:01,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:10:01,588 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 94 flow [2023-08-26 12:10:01,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2023-08-26 12:10:01,589 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -4 predicate places. [2023-08-26 12:10:01,589 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 94 flow [2023-08-26 12:10:01,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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 12:10:01,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:10:01,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:10:01,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 12:10:01,590 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 12:10:01,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:10:01,591 INFO L85 PathProgramCache]: Analyzing trace with hash 484455252, now seen corresponding path program 1 times [2023-08-26 12:10:01,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:10:01,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738974010] [2023-08-26 12:10:01,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:10:01,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:10:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:10:01,729 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 12:10:01,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:10:01,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738974010] [2023-08-26 12:10:01,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738974010] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:10:01,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:10:01,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:10:01,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423593647] [2023-08-26 12:10:01,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:10:01,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:10:01,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:10:01,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:10:01,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:10:01,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 165 [2023-08-26 12:10:01,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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 12:10:01,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:10:01,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 165 [2023-08-26 12:10:01,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:10:01,849 INFO L124 PetriNetUnfolderBase]: 534/863 cut-off events. [2023-08-26 12:10:01,849 INFO L125 PetriNetUnfolderBase]: For 350/350 co-relation queries the response was YES. [2023-08-26 12:10:01,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2484 conditions, 863 events. 534/863 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3773 event pairs, 69 based on Foata normal form. 6/869 useless extension candidates. Maximal degree in co-relation 2479. Up to 451 conditions per place. [2023-08-26 12:10:01,855 INFO L140 encePairwiseOnDemand]: 157/165 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-08-26 12:10:01,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 45 transitions, 264 flow [2023-08-26 12:10:01,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:10:01,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:10:01,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 345 transitions. [2023-08-26 12:10:01,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2023-08-26 12:10:01,857 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 345 transitions. [2023-08-26 12:10:01,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 345 transitions. [2023-08-26 12:10:01,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:10:01,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 345 transitions. [2023-08-26 12:10:01,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 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 12:10:01,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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 12:10:01,860 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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 12:10:01,860 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 94 flow. Second operand 4 states and 345 transitions. [2023-08-26 12:10:01,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 45 transitions, 264 flow [2023-08-26 12:10:01,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 45 transitions, 240 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:10:01,864 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 164 flow [2023-08-26 12:10:01,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2023-08-26 12:10:01,865 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-08-26 12:10:01,865 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 164 flow [2023-08-26 12:10:01,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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 12:10:01,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:10:01,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:10:01,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 12:10:01,866 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 12:10:01,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:10:01,867 INFO L85 PathProgramCache]: Analyzing trace with hash 484454818, now seen corresponding path program 1 times [2023-08-26 12:10:01,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:10:01,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71894187] [2023-08-26 12:10:01,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:10:01,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:10:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:10:01,988 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 12:10:01,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:10:01,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71894187] [2023-08-26 12:10:01,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71894187] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:10:01,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:10:01,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:10:01,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819284954] [2023-08-26 12:10:01,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:10:01,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:10:01,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:10:01,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:10:01,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:10:01,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 165 [2023-08-26 12:10:01,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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 12:10:01,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:10:01,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 165 [2023-08-26 12:10:01,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:10:02,099 INFO L124 PetriNetUnfolderBase]: 451/749 cut-off events. [2023-08-26 12:10:02,100 INFO L125 PetriNetUnfolderBase]: For 833/849 co-relation queries the response was YES. [2023-08-26 12:10:02,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2342 conditions, 749 events. 451/749 cut-off events. For 833/849 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3241 event pairs, 127 based on Foata normal form. 23/769 useless extension candidates. Maximal degree in co-relation 2335. Up to 575 conditions per place. [2023-08-26 12:10:02,105 INFO L140 encePairwiseOnDemand]: 161/165 looper letters, 34 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2023-08-26 12:10:02,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 318 flow [2023-08-26 12:10:02,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:10:02,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:10:02,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2023-08-26 12:10:02,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434343434343434 [2023-08-26 12:10:02,107 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2023-08-26 12:10:02,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2023-08-26 12:10:02,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:10:02,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2023-08-26 12:10:02,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 12:10:02,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 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 12:10:02,111 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 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 12:10:02,111 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 164 flow. Second operand 3 states and 269 transitions. [2023-08-26 12:10:02,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 318 flow [2023-08-26 12:10:02,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 318 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:10:02,117 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 216 flow [2023-08-26 12:10:02,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2023-08-26 12:10:02,119 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-08-26 12:10:02,119 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 216 flow [2023-08-26 12:10:02,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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 12:10:02,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:10:02,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:10:02,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 12:10:02,120 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 12:10:02,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:10:02,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1315162737, now seen corresponding path program 1 times [2023-08-26 12:10:02,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:10:02,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841232373] [2023-08-26 12:10:02,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:10:02,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:10:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:10:02,304 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 12:10:02,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:10:02,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841232373] [2023-08-26 12:10:02,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841232373] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:10:02,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:10:02,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:10:02,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099952326] [2023-08-26 12:10:02,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:10:02,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:10:02,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:10:02,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:10:02,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:10:02,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 165 [2023-08-26 12:10:02,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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 12:10:02,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:10:02,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 165 [2023-08-26 12:10:02,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:10:02,427 INFO L124 PetriNetUnfolderBase]: 508/839 cut-off events. [2023-08-26 12:10:02,427 INFO L125 PetriNetUnfolderBase]: For 1080/1080 co-relation queries the response was YES. [2023-08-26 12:10:02,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2867 conditions, 839 events. 508/839 cut-off events. For 1080/1080 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3661 event pairs, 80 based on Foata normal form. 8/847 useless extension candidates. Maximal degree in co-relation 2858. Up to 342 conditions per place. [2023-08-26 12:10:02,433 INFO L140 encePairwiseOnDemand]: 157/165 looper letters, 36 selfloop transitions, 17 changer transitions 0/53 dead transitions. [2023-08-26 12:10:02,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 53 transitions, 390 flow [2023-08-26 12:10:02,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:10:02,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:10:02,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 346 transitions. [2023-08-26 12:10:02,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5242424242424243 [2023-08-26 12:10:02,435 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 346 transitions. [2023-08-26 12:10:02,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 346 transitions. [2023-08-26 12:10:02,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:10:02,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 346 transitions. [2023-08-26 12:10:02,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 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 12:10:02,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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 12:10:02,439 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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 12:10:02,439 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 216 flow. Second operand 4 states and 346 transitions. [2023-08-26 12:10:02,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 53 transitions, 390 flow [2023-08-26 12:10:02,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 53 transitions, 384 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:10:02,445 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 310 flow [2023-08-26 12:10:02,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-26 12:10:02,447 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-08-26 12:10:02,448 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 310 flow [2023-08-26 12:10:02,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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 12:10:02,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:10:02,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:10:02,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 12:10:02,448 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 12:10:02,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:10:02,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1681691453, now seen corresponding path program 1 times [2023-08-26 12:10:02,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:10:02,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706738886] [2023-08-26 12:10:02,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:10:02,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:10:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:10:02,557 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 12:10:02,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:10:02,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706738886] [2023-08-26 12:10:02,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706738886] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:10:02,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:10:02,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:10:02,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841210983] [2023-08-26 12:10:02,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:10:02,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:10:02,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:10:02,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:10:02,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:10:02,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 165 [2023-08-26 12:10:02,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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 12:10:02,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:10:02,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 165 [2023-08-26 12:10:02,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:10:02,666 INFO L124 PetriNetUnfolderBase]: 487/804 cut-off events. [2023-08-26 12:10:02,666 INFO L125 PetriNetUnfolderBase]: For 1931/1931 co-relation queries the response was YES. [2023-08-26 12:10:02,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3133 conditions, 804 events. 487/804 cut-off events. For 1931/1931 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3479 event pairs, 99 based on Foata normal form. 6/810 useless extension candidates. Maximal degree in co-relation 3122. Up to 400 conditions per place. [2023-08-26 12:10:02,671 INFO L140 encePairwiseOnDemand]: 157/165 looper letters, 44 selfloop transitions, 18 changer transitions 1/63 dead transitions. [2023-08-26 12:10:02,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 63 transitions, 594 flow [2023-08-26 12:10:02,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:10:02,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:10:02,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 346 transitions. [2023-08-26 12:10:02,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5242424242424243 [2023-08-26 12:10:02,673 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 346 transitions. [2023-08-26 12:10:02,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 346 transitions. [2023-08-26 12:10:02,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:10:02,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 346 transitions. [2023-08-26 12:10:02,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 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 12:10:02,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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 12:10:02,675 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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 12:10:02,676 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 310 flow. Second operand 4 states and 346 transitions. [2023-08-26 12:10:02,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 63 transitions, 594 flow [2023-08-26 12:10:02,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 63 transitions, 588 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-26 12:10:02,682 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 468 flow [2023-08-26 12:10:02,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=468, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2023-08-26 12:10:02,683 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2023-08-26 12:10:02,683 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 468 flow [2023-08-26 12:10:02,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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 12:10:02,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:10:02,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:10:02,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 12:10:02,684 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 12:10:02,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:10:02,684 INFO L85 PathProgramCache]: Analyzing trace with hash 593230935, now seen corresponding path program 1 times [2023-08-26 12:10:02,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:10:02,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891354348] [2023-08-26 12:10:02,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:10:02,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:10:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:10:02,810 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 12:10:02,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:10:02,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891354348] [2023-08-26 12:10:02,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891354348] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:10:02,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:10:02,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:10:02,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991502293] [2023-08-26 12:10:02,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:10:02,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:10:02,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:10:02,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:10:02,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:10:02,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 165 [2023-08-26 12:10:02,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 468 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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 12:10:02,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:10:02,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 165 [2023-08-26 12:10:02,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:10:02,966 INFO L124 PetriNetUnfolderBase]: 530/933 cut-off events. [2023-08-26 12:10:02,966 INFO L125 PetriNetUnfolderBase]: For 4245/4267 co-relation queries the response was YES. [2023-08-26 12:10:02,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3858 conditions, 933 events. 530/933 cut-off events. For 4245/4267 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4613 event pairs, 131 based on Foata normal form. 42/972 useless extension candidates. Maximal degree in co-relation 3844. Up to 386 conditions per place. [2023-08-26 12:10:02,974 INFO L140 encePairwiseOnDemand]: 160/165 looper letters, 32 selfloop transitions, 8 changer transitions 19/63 dead transitions. [2023-08-26 12:10:02,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 716 flow [2023-08-26 12:10:02,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:10:02,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:10:02,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 356 transitions. [2023-08-26 12:10:02,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393939393939394 [2023-08-26 12:10:02,976 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 356 transitions. [2023-08-26 12:10:02,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 356 transitions. [2023-08-26 12:10:02,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:10:02,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 356 transitions. [2023-08-26 12:10:02,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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 12:10:02,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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 12:10:02,979 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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 12:10:02,981 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 468 flow. Second operand 4 states and 356 transitions. [2023-08-26 12:10:02,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 716 flow [2023-08-26 12:10:02,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 63 transitions, 710 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:10:02,992 INFO L231 Difference]: Finished difference. Result has 50 places, 33 transitions, 348 flow [2023-08-26 12:10:02,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=348, PETRI_PLACES=50, PETRI_TRANSITIONS=33} [2023-08-26 12:10:02,993 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2023-08-26 12:10:02,993 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 33 transitions, 348 flow [2023-08-26 12:10:02,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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 12:10:02,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:10:02,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:10:02,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 12:10:02,996 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 12:10:02,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:10:02,996 INFO L85 PathProgramCache]: Analyzing trace with hash 558864924, now seen corresponding path program 1 times [2023-08-26 12:10:02,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:10:02,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438159295] [2023-08-26 12:10:02,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:10:02,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:10:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:10:03,119 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 12:10:03,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:10:03,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438159295] [2023-08-26 12:10:03,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438159295] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:10:03,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:10:03,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:10:03,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673251632] [2023-08-26 12:10:03,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:10:03,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 12:10:03,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:10:03,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 12:10:03,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 12:10:03,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 165 [2023-08-26 12:10:03,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 33 transitions, 348 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 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 12:10:03,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:10:03,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 165 [2023-08-26 12:10:03,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:10:03,262 INFO L124 PetriNetUnfolderBase]: 360/625 cut-off events. [2023-08-26 12:10:03,262 INFO L125 PetriNetUnfolderBase]: For 2504/2504 co-relation queries the response was YES. [2023-08-26 12:10:03,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2534 conditions, 625 events. 360/625 cut-off events. For 2504/2504 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2733 event pairs, 110 based on Foata normal form. 18/643 useless extension candidates. Maximal degree in co-relation 2518. Up to 382 conditions per place. [2023-08-26 12:10:03,266 INFO L140 encePairwiseOnDemand]: 158/165 looper letters, 26 selfloop transitions, 9 changer transitions 18/53 dead transitions. [2023-08-26 12:10:03,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 582 flow [2023-08-26 12:10:03,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 12:10:03,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 12:10:03,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 419 transitions. [2023-08-26 12:10:03,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078787878787879 [2023-08-26 12:10:03,268 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 419 transitions. [2023-08-26 12:10:03,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 419 transitions. [2023-08-26 12:10:03,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:10:03,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 419 transitions. [2023-08-26 12:10:03,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 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 12:10:03,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 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 12:10:03,271 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 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 12:10:03,271 INFO L175 Difference]: Start difference. First operand has 50 places, 33 transitions, 348 flow. Second operand 5 states and 419 transitions. [2023-08-26 12:10:03,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 582 flow [2023-08-26 12:10:03,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 53 transitions, 521 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-26 12:10:03,278 INFO L231 Difference]: Finished difference. Result has 51 places, 25 transitions, 244 flow [2023-08-26 12:10:03,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=244, PETRI_PLACES=51, PETRI_TRANSITIONS=25} [2023-08-26 12:10:03,278 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2023-08-26 12:10:03,279 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 25 transitions, 244 flow [2023-08-26 12:10:03,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 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 12:10:03,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:10:03,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:10:03,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 12:10:03,279 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 12:10:03,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:10:03,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1150975576, now seen corresponding path program 1 times [2023-08-26 12:10:03,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:10:03,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657315071] [2023-08-26 12:10:03,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:10:03,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:10:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:10:03,377 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 12:10:03,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:10:03,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657315071] [2023-08-26 12:10:03,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657315071] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:10:03,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:10:03,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 12:10:03,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671866350] [2023-08-26 12:10:03,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:10:03,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 12:10:03,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:10:03,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 12:10:03,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 12:10:03,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 165 [2023-08-26 12:10:03,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 25 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 78.6) internal successors, (393), 5 states have internal predecessors, (393), 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 12:10:03,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:10:03,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 165 [2023-08-26 12:10:03,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:10:03,462 INFO L124 PetriNetUnfolderBase]: 187/334 cut-off events. [2023-08-26 12:10:03,463 INFO L125 PetriNetUnfolderBase]: For 1185/1185 co-relation queries the response was YES. [2023-08-26 12:10:03,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1351 conditions, 334 events. 187/334 cut-off events. For 1185/1185 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1201 event pairs, 28 based on Foata normal form. 12/346 useless extension candidates. Maximal degree in co-relation 1335. Up to 100 conditions per place. [2023-08-26 12:10:03,465 INFO L140 encePairwiseOnDemand]: 158/165 looper letters, 21 selfloop transitions, 5 changer transitions 19/45 dead transitions. [2023-08-26 12:10:03,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 45 transitions, 402 flow [2023-08-26 12:10:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 12:10:03,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 12:10:03,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 497 transitions. [2023-08-26 12:10:03,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502020202020202 [2023-08-26 12:10:03,467 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 497 transitions. [2023-08-26 12:10:03,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 497 transitions. [2023-08-26 12:10:03,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:10:03,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 497 transitions. [2023-08-26 12:10:03,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 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 12:10:03,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 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 12:10:03,471 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 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 12:10:03,471 INFO L175 Difference]: Start difference. First operand has 51 places, 25 transitions, 244 flow. Second operand 6 states and 497 transitions. [2023-08-26 12:10:03,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 45 transitions, 402 flow [2023-08-26 12:10:03,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 340 flow, removed 5 selfloop flow, removed 10 redundant places. [2023-08-26 12:10:03,475 INFO L231 Difference]: Finished difference. Result has 47 places, 17 transitions, 112 flow [2023-08-26 12:10:03,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=112, PETRI_PLACES=47, PETRI_TRANSITIONS=17} [2023-08-26 12:10:03,476 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2023-08-26 12:10:03,476 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 17 transitions, 112 flow [2023-08-26 12:10:03,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.6) internal successors, (393), 5 states have internal predecessors, (393), 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 12:10:03,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:10:03,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:10:03,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 12:10:03,477 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 12:10:03,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:10:03,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1680754316, now seen corresponding path program 2 times [2023-08-26 12:10:03,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:10:03,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764007144] [2023-08-26 12:10:03,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:10:03,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:10:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:10:03,619 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 12:10:03,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:10:03,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764007144] [2023-08-26 12:10:03,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764007144] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:10:03,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:10:03,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:10:03,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207141578] [2023-08-26 12:10:03,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:10:03,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:10:03,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:10:03,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:10:03,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:10:03,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 165 [2023-08-26 12:10:03,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 17 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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 12:10:03,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:10:03,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 165 [2023-08-26 12:10:03,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:10:03,671 INFO L124 PetriNetUnfolderBase]: 46/112 cut-off events. [2023-08-26 12:10:03,672 INFO L125 PetriNetUnfolderBase]: For 234/236 co-relation queries the response was YES. [2023-08-26 12:10:03,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 112 events. 46/112 cut-off events. For 234/236 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 366 event pairs, 16 based on Foata normal form. 6/115 useless extension candidates. Maximal degree in co-relation 367. Up to 62 conditions per place. [2023-08-26 12:10:03,673 INFO L140 encePairwiseOnDemand]: 159/165 looper letters, 17 selfloop transitions, 3 changer transitions 13/36 dead transitions. [2023-08-26 12:10:03,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 36 transitions, 252 flow [2023-08-26 12:10:03,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 12:10:03,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 12:10:03,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 435 transitions. [2023-08-26 12:10:03,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2023-08-26 12:10:03,674 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 435 transitions. [2023-08-26 12:10:03,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 435 transitions. [2023-08-26 12:10:03,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:10:03,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 435 transitions. [2023-08-26 12:10:03,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 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 12:10:03,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 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 12:10:03,677 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 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 12:10:03,677 INFO L175 Difference]: Start difference. First operand has 47 places, 17 transitions, 112 flow. Second operand 5 states and 435 transitions. [2023-08-26 12:10:03,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 36 transitions, 252 flow [2023-08-26 12:10:03,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 175 flow, removed 7 selfloop flow, removed 16 redundant places. [2023-08-26 12:10:03,679 INFO L231 Difference]: Finished difference. Result has 36 places, 19 transitions, 87 flow [2023-08-26 12:10:03,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=87, PETRI_PLACES=36, PETRI_TRANSITIONS=19} [2023-08-26 12:10:03,681 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-08-26 12:10:03,681 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 19 transitions, 87 flow [2023-08-26 12:10:03,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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 12:10:03,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:10:03,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:10:03,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 12:10:03,682 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 12:10:03,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:10:03,682 INFO L85 PathProgramCache]: Analyzing trace with hash -258852849, now seen corresponding path program 1 times [2023-08-26 12:10:03,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:10:03,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643306688] [2023-08-26 12:10:03,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:10:03,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:10:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:10:03,816 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 12:10:03,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:10:03,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643306688] [2023-08-26 12:10:03,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643306688] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:10:03,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:10:03,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:10:03,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807690611] [2023-08-26 12:10:03,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:10:03,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 12:10:03,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:10:03,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 12:10:03,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 12:10:03,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 165 [2023-08-26 12:10:03,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 19 transitions, 87 flow. Second operand has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 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 12:10:03,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:10:03,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 165 [2023-08-26 12:10:03,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:10:03,863 INFO L124 PetriNetUnfolderBase]: 24/68 cut-off events. [2023-08-26 12:10:03,863 INFO L125 PetriNetUnfolderBase]: For 67/74 co-relation queries the response was YES. [2023-08-26 12:10:03,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 68 events. 24/68 cut-off events. For 67/74 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 164 event pairs, 3 based on Foata normal form. 7/73 useless extension candidates. Maximal degree in co-relation 238. Up to 40 conditions per place. [2023-08-26 12:10:03,864 INFO L140 encePairwiseOnDemand]: 159/165 looper letters, 16 selfloop transitions, 5 changer transitions 13/37 dead transitions. [2023-08-26 12:10:03,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 37 transitions, 245 flow [2023-08-26 12:10:03,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 12:10:03,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 12:10:03,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 516 transitions. [2023-08-26 12:10:03,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212121212121212 [2023-08-26 12:10:03,866 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 516 transitions. [2023-08-26 12:10:03,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 516 transitions. [2023-08-26 12:10:03,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:10:03,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 516 transitions. [2023-08-26 12:10:03,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 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 12:10:03,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 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 12:10:03,869 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 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 12:10:03,869 INFO L175 Difference]: Start difference. First operand has 36 places, 19 transitions, 87 flow. Second operand 6 states and 516 transitions. [2023-08-26 12:10:03,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 37 transitions, 245 flow [2023-08-26 12:10:03,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 240 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 12:10:03,871 INFO L231 Difference]: Finished difference. Result has 40 places, 19 transitions, 106 flow [2023-08-26 12:10:03,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=19} [2023-08-26 12:10:03,871 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2023-08-26 12:10:03,872 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 19 transitions, 106 flow [2023-08-26 12:10:03,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 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 12:10:03,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:10:03,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:10:03,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 12:10:03,872 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 12:10:03,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:10:03,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1086824146, now seen corresponding path program 1 times [2023-08-26 12:10:03,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:10:03,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541654936] [2023-08-26 12:10:03,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:10:03,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:10:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:10:03,985 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 12:10:03,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:10:03,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541654936] [2023-08-26 12:10:03,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541654936] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:10:03,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:10:03,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 12:10:03,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036323891] [2023-08-26 12:10:03,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:10:03,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 12:10:03,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:10:03,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 12:10:03,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-26 12:10:03,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 165 [2023-08-26 12:10:03,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 19 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 82.16666666666667) internal successors, (493), 6 states have internal predecessors, (493), 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 12:10:03,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:10:03,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 165 [2023-08-26 12:10:03,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:10:04,031 INFO L124 PetriNetUnfolderBase]: 11/39 cut-off events. [2023-08-26 12:10:04,032 INFO L125 PetriNetUnfolderBase]: For 77/84 co-relation queries the response was YES. [2023-08-26 12:10:04,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 39 events. 11/39 cut-off events. For 77/84 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 2 based on Foata normal form. 6/44 useless extension candidates. Maximal degree in co-relation 147. Up to 17 conditions per place. [2023-08-26 12:10:04,032 INFO L140 encePairwiseOnDemand]: 159/165 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2023-08-26 12:10:04,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 26 transitions, 180 flow [2023-08-26 12:10:04,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 12:10:04,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 12:10:04,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 584 transitions. [2023-08-26 12:10:04,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056277056277056 [2023-08-26 12:10:04,035 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 584 transitions. [2023-08-26 12:10:04,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 584 transitions. [2023-08-26 12:10:04,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:10:04,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 584 transitions. [2023-08-26 12:10:04,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 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 12:10:04,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 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 12:10:04,040 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 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 12:10:04,040 INFO L175 Difference]: Start difference. First operand has 40 places, 19 transitions, 106 flow. Second operand 7 states and 584 transitions. [2023-08-26 12:10:04,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 26 transitions, 180 flow [2023-08-26 12:10:04,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 26 transitions, 153 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-26 12:10:04,041 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-08-26 12:10:04,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-08-26 12:10:04,042 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2023-08-26 12:10:04,042 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-08-26 12:10:04,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.16666666666667) internal successors, (493), 6 states have internal predecessors, (493), 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 12:10:04,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-08-26 12:10:04,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-08-26 12:10:04,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-08-26 12:10:04,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-08-26 12:10:04,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-08-26 12:10:04,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2023-08-26 12:10:04,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (3 of 10 remaining) [2023-08-26 12:10:04,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 10 remaining) [2023-08-26 12:10:04,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2023-08-26 12:10:04,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-08-26 12:10:04,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 12:10:04,047 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:10:04,049 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 12:10:04,049 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 12:10:04,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:10:04 BasicIcfg [2023-08-26 12:10:04,054 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 12:10:04,054 INFO L158 Benchmark]: Toolchain (without parser) took 6773.30ms. Allocated memory was 413.1MB in the beginning and 522.2MB in the end (delta: 109.1MB). Free memory was 388.8MB in the beginning and 312.5MB in the end (delta: 76.3MB). Peak memory consumption was 187.4MB. Max. memory is 16.0GB. [2023-08-26 12:10:04,054 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 413.1MB. Free memory is still 390.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:10:04,054 INFO L158 Benchmark]: CACSL2BoogieTranslator took 456.53ms. Allocated memory is still 413.1MB. Free memory was 388.8MB in the beginning and 368.3MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-26 12:10:04,055 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.31ms. Allocated memory is still 413.1MB. Free memory was 368.3MB in the beginning and 366.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:10:04,055 INFO L158 Benchmark]: Boogie Preprocessor took 20.62ms. Allocated memory is still 413.1MB. Free memory was 366.3MB in the beginning and 364.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:10:04,055 INFO L158 Benchmark]: RCFGBuilder took 476.95ms. Allocated memory is still 413.1MB. Free memory was 364.7MB in the beginning and 350.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 12:10:04,056 INFO L158 Benchmark]: TraceAbstraction took 5768.10ms. Allocated memory was 413.1MB in the beginning and 522.2MB in the end (delta: 109.1MB). Free memory was 349.5MB in the beginning and 312.5MB in the end (delta: 37.0MB). Peak memory consumption was 147.6MB. Max. memory is 16.0GB. [2023-08-26 12:10:04,057 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 413.1MB. Free memory is still 390.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 456.53ms. Allocated memory is still 413.1MB. Free memory was 388.8MB in the beginning and 368.3MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.31ms. Allocated memory is still 413.1MB. Free memory was 368.3MB in the beginning and 366.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.62ms. Allocated memory is still 413.1MB. Free memory was 366.3MB in the beginning and 364.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 476.95ms. Allocated memory is still 413.1MB. Free memory was 364.7MB in the beginning and 350.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 5768.10ms. Allocated memory was 413.1MB in the beginning and 522.2MB in the end (delta: 109.1MB). Free memory was 349.5MB in the beginning and 312.5MB in the end (delta: 37.0MB). Peak memory consumption was 147.6MB. 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: 2.3s, 86 PlacesBefore, 33 PlacesAfterwards, 77 TransitionsBefore, 23 TransitionsAfterwards, 1188 CoEnabledTransitionPairs, 5 FixpointIterations, 23 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 71 TotalNumberOfCompositions, 2165 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1188, independent: 1112, independent conditional: 0, independent unconditional: 1112, dependent: 76, dependent conditional: 0, dependent unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 634, independent: 604, independent conditional: 0, independent unconditional: 604, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1188, independent: 508, independent conditional: 0, independent unconditional: 508, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 634, unknown conditional: 0, unknown unconditional: 634] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 46, Positive conditional cache size: 0, Positive unconditional cache size: 46, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, 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: -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 7 procedures, 116 locations, 10 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: 5.6s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 160 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 160 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 509 IncrementalHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 30 mSDtfsCounter, 509 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=468occurred in iteration=6, InterpolantAutomatonStates: 53, 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, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 492 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 12:10:04,077 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...