/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_04-priv_multi_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 15:31:58,328 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 15:31:58,376 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 15:31:58,380 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 15:31:58,381 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 15:31:58,400 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 15:31:58,401 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 15:31:58,401 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 15:31:58,402 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 15:31:58,402 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 15:31:58,402 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 15:31:58,403 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 15:31:58,403 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 15:31:58,403 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 15:31:58,404 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 15:31:58,404 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 15:31:58,404 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 15:31:58,405 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 15:31:58,405 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 15:31:58,405 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 15:31:58,406 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 15:31:58,406 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 15:31:58,407 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 15:31:58,407 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 15:31:58,407 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 15:31:58,408 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 15:31:58,408 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 15:31:58,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:31:58,409 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 15:31:58,409 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 15:31:58,410 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 15:31:58,410 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 15:31:58,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 15:31:58,411 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 15:31:58,411 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 15:31:58,411 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 15:31:58,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 15:31:58,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 15:31:58,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 15:31:58,777 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 15:31:58,777 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 15:31:58,779 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_04-priv_multi_true.i [2023-08-26 15:31:59,949 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 15:32:00,266 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 15:32:00,266 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_04-priv_multi_true.i [2023-08-26 15:32:00,288 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8f5c60fc/29c7ef8c559d4db29268aa42c34238b9/FLAG51d280e22 [2023-08-26 15:32:00,305 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8f5c60fc/29c7ef8c559d4db29268aa42c34238b9 [2023-08-26 15:32:00,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 15:32:00,312 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 15:32:00,317 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 15:32:00,317 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 15:32:00,320 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 15:32:00,321 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:32:00" (1/1) ... [2023-08-26 15:32:00,323 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fbba78c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:00, skipping insertion in model container [2023-08-26 15:32:00,323 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:32:00" (1/1) ... [2023-08-26 15:32:00,376 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 15:32:00,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:32:00,825 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 15:32:00,850 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-26 15:32:00,852 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 15:32:00,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:32:00,953 WARN L669 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 15:32:00,959 INFO L206 MainTranslator]: Completed translation [2023-08-26 15:32:00,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:00 WrapperNode [2023-08-26 15:32:00,960 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 15:32:00,961 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 15:32:00,961 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 15:32:00,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 15:32:00,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:00" (1/1) ... [2023-08-26 15:32:00,987 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:00" (1/1) ... [2023-08-26 15:32:01,016 INFO L138 Inliner]: procedures = 271, calls = 46, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 111 [2023-08-26 15:32:01,017 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 15:32:01,017 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 15:32:01,017 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 15:32:01,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 15:32:01,025 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:00" (1/1) ... [2023-08-26 15:32:01,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:00" (1/1) ... [2023-08-26 15:32:01,043 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:00" (1/1) ... [2023-08-26 15:32:01,044 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:00" (1/1) ... [2023-08-26 15:32:01,052 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:00" (1/1) ... [2023-08-26 15:32:01,055 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:00" (1/1) ... [2023-08-26 15:32:01,075 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:00" (1/1) ... [2023-08-26 15:32:01,077 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:00" (1/1) ... [2023-08-26 15:32:01,081 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 15:32:01,082 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 15:32:01,082 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 15:32:01,082 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 15:32:01,083 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:00" (1/1) ... [2023-08-26 15:32:01,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:32:01,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 15:32:01,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 15:32:01,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 15:32:01,166 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-08-26 15:32:01,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 15:32:01,167 INFO L130 BoogieDeclarations]: Found specification of procedure generate [2023-08-26 15:32:01,168 INFO L138 BoogieDeclarations]: Found implementation of procedure generate [2023-08-26 15:32:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 15:32:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 15:32:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 15:32:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 15:32:01,169 INFO L130 BoogieDeclarations]: Found specification of procedure dispose [2023-08-26 15:32:01,169 INFO L138 BoogieDeclarations]: Found implementation of procedure dispose [2023-08-26 15:32:01,169 INFO L130 BoogieDeclarations]: Found specification of procedure process [2023-08-26 15:32:01,169 INFO L138 BoogieDeclarations]: Found implementation of procedure process [2023-08-26 15:32:01,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 15:32:01,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 15:32:01,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 15:32:01,171 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 15:32:01,468 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 15:32:01,469 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 15:32:01,647 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 15:32:01,654 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 15:32:01,654 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-26 15:32:01,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:32:01 BoogieIcfgContainer [2023-08-26 15:32:01,656 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 15:32:01,658 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 15:32:01,658 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 15:32:01,661 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 15:32:01,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:32:00" (1/3) ... [2023-08-26 15:32:01,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39174d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:32:01, skipping insertion in model container [2023-08-26 15:32:01,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:00" (2/3) ... [2023-08-26 15:32:01,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39174d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:32:01, skipping insertion in model container [2023-08-26 15:32:01,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:32:01" (3/3) ... [2023-08-26 15:32:01,664 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_04-priv_multi_true.i [2023-08-26 15:32:01,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 15:32:01,679 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-26 15:32:01,679 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 15:32:01,731 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 15:32:01,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 166 transitions, 347 flow [2023-08-26 15:32:01,886 INFO L124 PetriNetUnfolderBase]: 14/163 cut-off events. [2023-08-26 15:32:01,886 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:32:01,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 163 events. 14/163 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 363 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2023-08-26 15:32:01,900 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 166 transitions, 347 flow [2023-08-26 15:32:01,905 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 163 transitions, 335 flow [2023-08-26 15:32:01,909 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:32:01,922 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 163 transitions, 335 flow [2023-08-26 15:32:01,924 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 163 transitions, 335 flow [2023-08-26 15:32:01,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 163 transitions, 335 flow [2023-08-26 15:32:01,958 INFO L124 PetriNetUnfolderBase]: 14/163 cut-off events. [2023-08-26 15:32:01,958 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:32:01,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 163 events. 14/163 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 365 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2023-08-26 15:32:01,964 INFO L119 LiptonReduction]: Number of co-enabled transitions 10214 [2023-08-26 15:32:05,921 INFO L134 LiptonReduction]: Checked pairs total: 21085 [2023-08-26 15:32:05,921 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-26 15:32:05,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 15:32:05,939 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;@11b6668d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:32:05,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-26 15:32:05,940 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:32:05,940 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 15:32:05,940 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:32:05,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:32:05,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 15:32:05,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 15:32:05,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:32:05,946 INFO L85 PathProgramCache]: Analyzing trace with hash 648, now seen corresponding path program 1 times [2023-08-26 15:32:05,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:32:05,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960608824] [2023-08-26 15:32:05,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:32:05,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:32:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:32:06,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 15:32:06,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:32:06,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960608824] [2023-08-26 15:32:06,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960608824] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:32:06,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:32:06,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 15:32:06,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537046989] [2023-08-26 15:32:06,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:32:06,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 15:32:06,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:32:06,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 15:32:06,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 15:32:06,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 315 [2023-08-26 15:32:06,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 115 flow. Second operand has 2 states, 2 states have (on average 151.5) internal successors, (303), 2 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:06,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:32:06,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 315 [2023-08-26 15:32:06,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:32:07,464 INFO L124 PetriNetUnfolderBase]: 10232/13985 cut-off events. [2023-08-26 15:32:07,465 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-08-26 15:32:07,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27553 conditions, 13985 events. 10232/13985 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 69162 event pairs, 7648 based on Foata normal form. 300/11206 useless extension candidates. Maximal degree in co-relation 27542. Up to 13452 conditions per place. [2023-08-26 15:32:07,564 INFO L140 encePairwiseOnDemand]: 310/315 looper letters, 42 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2023-08-26 15:32:07,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 48 transitions, 189 flow [2023-08-26 15:32:07,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 15:32:07,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 15:32:07,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 349 transitions. [2023-08-26 15:32:07,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553968253968254 [2023-08-26 15:32:07,581 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 349 transitions. [2023-08-26 15:32:07,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 349 transitions. [2023-08-26 15:32:07,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:32:07,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 349 transitions. [2023-08-26 15:32:07,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 174.5) internal successors, (349), 2 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:07,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:07,595 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:07,597 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 115 flow. Second operand 2 states and 349 transitions. [2023-08-26 15:32:07,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 48 transitions, 189 flow [2023-08-26 15:32:07,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 186 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 15:32:07,604 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 102 flow [2023-08-26 15:32:07,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2023-08-26 15:32:07,609 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2023-08-26 15:32:07,610 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 102 flow [2023-08-26 15:32:07,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 151.5) internal successors, (303), 2 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:07,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:32:07,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 15:32:07,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 15:32:07,611 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 15:32:07,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:32:07,613 INFO L85 PathProgramCache]: Analyzing trace with hash 636829, now seen corresponding path program 1 times [2023-08-26 15:32:07,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:32:07,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416586491] [2023-08-26 15:32:07,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:32:07,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:32:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:32:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 15:32:07,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:32:07,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416586491] [2023-08-26 15:32:07,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416586491] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:32:07,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:32:07,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 15:32:07,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951892595] [2023-08-26 15:32:07,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:32:07,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:32:07,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:32:07,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:32:07,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:32:07,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 315 [2023-08-26 15:32:07,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:07,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:32:07,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 315 [2023-08-26 15:32:07,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:32:08,831 INFO L124 PetriNetUnfolderBase]: 10227/13914 cut-off events. [2023-08-26 15:32:08,832 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:32:08,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27470 conditions, 13914 events. 10227/13914 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 68704 event pairs, 6884 based on Foata normal form. 0/10851 useless extension candidates. Maximal degree in co-relation 27467. Up to 12161 conditions per place. [2023-08-26 15:32:08,908 INFO L140 encePairwiseOnDemand]: 312/315 looper letters, 61 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-08-26 15:32:08,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 270 flow [2023-08-26 15:32:08,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:32:08,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:32:08,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-08-26 15:32:08,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835978835978836 [2023-08-26 15:32:08,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-08-26 15:32:08,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-08-26 15:32:08,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:32:08,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-08-26 15:32:08,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:08,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:08,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:08,915 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 102 flow. Second operand 3 states and 457 transitions. [2023-08-26 15:32:08,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 270 flow [2023-08-26 15:32:08,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 69 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 15:32:08,917 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 104 flow [2023-08-26 15:32:08,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-08-26 15:32:08,918 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-08-26 15:32:08,918 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 104 flow [2023-08-26 15:32:08,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:08,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:32:08,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 15:32:08,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 15:32:08,919 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 15:32:08,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:32:08,920 INFO L85 PathProgramCache]: Analyzing trace with hash 636830, now seen corresponding path program 1 times [2023-08-26 15:32:08,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:32:08,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660439310] [2023-08-26 15:32:08,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:32:08,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:32:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:32:09,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 15:32:09,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:32:09,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660439310] [2023-08-26 15:32:09,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660439310] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:32:09,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:32:09,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 15:32:09,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649116713] [2023-08-26 15:32:09,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:32:09,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:32:09,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:32:09,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:32:09,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:32:09,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 315 [2023-08-26 15:32:09,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:09,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:32:09,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 315 [2023-08-26 15:32:09,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:32:09,864 INFO L124 PetriNetUnfolderBase]: 10222/13903 cut-off events. [2023-08-26 15:32:09,865 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-08-26 15:32:09,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27751 conditions, 13903 events. 10222/13903 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 68548 event pairs, 6880 based on Foata normal form. 0/11146 useless extension candidates. Maximal degree in co-relation 27747. Up to 12151 conditions per place. [2023-08-26 15:32:09,947 INFO L140 encePairwiseOnDemand]: 312/315 looper letters, 60 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-26 15:32:09,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 68 transitions, 270 flow [2023-08-26 15:32:09,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:32:09,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:32:09,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 465 transitions. [2023-08-26 15:32:09,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2023-08-26 15:32:09,950 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 465 transitions. [2023-08-26 15:32:09,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 465 transitions. [2023-08-26 15:32:09,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:32:09,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 465 transitions. [2023-08-26 15:32:09,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:09,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:09,953 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:09,954 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 104 flow. Second operand 3 states and 465 transitions. [2023-08-26 15:32:09,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 68 transitions, 270 flow [2023-08-26 15:32:09,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 68 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 15:32:09,958 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 102 flow [2023-08-26 15:32:09,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-08-26 15:32:09,959 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2023-08-26 15:32:09,959 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 102 flow [2023-08-26 15:32:09,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:09,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:32:09,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 15:32:09,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 15:32:09,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 15:32:09,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:32:09,961 INFO L85 PathProgramCache]: Analyzing trace with hash 612006722, now seen corresponding path program 1 times [2023-08-26 15:32:09,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:32:09,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131884121] [2023-08-26 15:32:09,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:32:09,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:32:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:32:10,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 15:32:10,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:32:10,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131884121] [2023-08-26 15:32:10,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131884121] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:32:10,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:32:10,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 15:32:10,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250674659] [2023-08-26 15:32:10,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:32:10,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:32:10,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:32:10,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:32:10,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:32:10,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 315 [2023-08-26 15:32:10,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:10,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:32:10,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 315 [2023-08-26 15:32:10,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:32:10,776 INFO L124 PetriNetUnfolderBase]: 10119/13733 cut-off events. [2023-08-26 15:32:10,776 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-08-26 15:32:10,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27428 conditions, 13733 events. 10119/13733 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 67415 event pairs, 6797 based on Foata normal form. 0/11041 useless extension candidates. Maximal degree in co-relation 27424. Up to 11998 conditions per place. [2023-08-26 15:32:10,842 INFO L140 encePairwiseOnDemand]: 312/315 looper letters, 59 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-26 15:32:10,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 266 flow [2023-08-26 15:32:10,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:32:10,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:32:10,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2023-08-26 15:32:10,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2023-08-26 15:32:10,844 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2023-08-26 15:32:10,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2023-08-26 15:32:10,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:32:10,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2023-08-26 15:32:10,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:10,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:10,848 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:10,848 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 102 flow. Second operand 3 states and 455 transitions. [2023-08-26 15:32:10,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 266 flow [2023-08-26 15:32:10,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 67 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 15:32:10,852 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 100 flow [2023-08-26 15:32:10,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2023-08-26 15:32:10,853 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-08-26 15:32:10,853 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 100 flow [2023-08-26 15:32:10,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:10,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:32:10,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 15:32:10,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 15:32:10,854 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 15:32:10,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:32:10,854 INFO L85 PathProgramCache]: Analyzing trace with hash 612006723, now seen corresponding path program 1 times [2023-08-26 15:32:10,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:32:10,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428734711] [2023-08-26 15:32:10,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:32:10,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:32:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:32:10,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 15:32:10,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:32:10,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428734711] [2023-08-26 15:32:10,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428734711] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:32:10,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:32:10,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 15:32:10,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164439528] [2023-08-26 15:32:10,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:32:10,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:32:10,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:32:10,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:32:10,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:32:10,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 315 [2023-08-26 15:32:10,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:10,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:32:10,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 315 [2023-08-26 15:32:10,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:32:11,710 INFO L124 PetriNetUnfolderBase]: 10016/13563 cut-off events. [2023-08-26 15:32:11,710 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-08-26 15:32:11,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27105 conditions, 13563 events. 10016/13563 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 66343 event pairs, 6714 based on Foata normal form. 0/10936 useless extension candidates. Maximal degree in co-relation 27101. Up to 11845 conditions per place. [2023-08-26 15:32:11,783 INFO L140 encePairwiseOnDemand]: 312/315 looper letters, 58 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-26 15:32:11,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 66 transitions, 262 flow [2023-08-26 15:32:11,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:32:11,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:32:11,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-08-26 15:32:11,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48994708994708996 [2023-08-26 15:32:11,785 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-08-26 15:32:11,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-08-26 15:32:11,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:32:11,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-08-26 15:32:11,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:11,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:11,789 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:11,789 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 100 flow. Second operand 3 states and 463 transitions. [2023-08-26 15:32:11,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 66 transitions, 262 flow [2023-08-26 15:32:11,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 66 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 15:32:11,793 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 98 flow [2023-08-26 15:32:11,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2023-08-26 15:32:11,794 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -8 predicate places. [2023-08-26 15:32:11,794 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 98 flow [2023-08-26 15:32:11,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:11,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:32:11,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:32:11,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 15:32:11,795 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 15:32:11,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:32:11,795 INFO L85 PathProgramCache]: Analyzing trace with hash 93741888, now seen corresponding path program 1 times [2023-08-26 15:32:11,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:32:11,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905019749] [2023-08-26 15:32:11,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:32:11,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:32:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:32:11,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 15:32:11,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:32:11,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905019749] [2023-08-26 15:32:11,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905019749] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:32:11,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:32:11,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 15:32:11,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259391753] [2023-08-26 15:32:11,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:32:11,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:32:11,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:32:11,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:32:11,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:32:11,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 315 [2023-08-26 15:32:11,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 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 15:32:11,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:32:11,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 315 [2023-08-26 15:32:11,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:32:13,363 INFO L124 PetriNetUnfolderBase]: 23282/30597 cut-off events. [2023-08-26 15:32:13,364 INFO L125 PetriNetUnfolderBase]: For 726/726 co-relation queries the response was YES. [2023-08-26 15:32:13,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62171 conditions, 30597 events. 23282/30597 cut-off events. For 726/726 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 151252 event pairs, 5428 based on Foata normal form. 0/25482 useless extension candidates. Maximal degree in co-relation 62167. Up to 23675 conditions per place. [2023-08-26 15:32:13,565 INFO L140 encePairwiseOnDemand]: 307/315 looper letters, 70 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2023-08-26 15:32:13,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 77 transitions, 322 flow [2023-08-26 15:32:13,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:32:13,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:32:13,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2023-08-26 15:32:13,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2023-08-26 15:32:13,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2023-08-26 15:32:13,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2023-08-26 15:32:13,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:32:13,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2023-08-26 15:32:13,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:13,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:13,572 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:13,572 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 98 flow. Second operand 3 states and 480 transitions. [2023-08-26 15:32:13,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 77 transitions, 322 flow [2023-08-26 15:32:13,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 77 transitions, 316 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 15:32:13,580 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 132 flow [2023-08-26 15:32:13,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2023-08-26 15:32:13,581 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-08-26 15:32:13,581 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 132 flow [2023-08-26 15:32:13,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 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 15:32:13,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:32:13,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:32:13,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 15:32:13,582 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting disposeErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 15:32:13,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:32:13,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1448124037, now seen corresponding path program 1 times [2023-08-26 15:32:13,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:32:13,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286943375] [2023-08-26 15:32:13,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:32:13,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:32:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:32:13,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 15:32:13,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:32:13,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286943375] [2023-08-26 15:32:13,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286943375] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:32:13,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:32:13,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 15:32:13,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827003935] [2023-08-26 15:32:13,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:32:13,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 15:32:13,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:32:13,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 15:32:13,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 15:32:13,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 315 [2023-08-26 15:32:13,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:13,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:32:13,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 315 [2023-08-26 15:32:13,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:32:15,755 INFO L124 PetriNetUnfolderBase]: 34654/47395 cut-off events. [2023-08-26 15:32:15,755 INFO L125 PetriNetUnfolderBase]: For 5751/5841 co-relation queries the response was YES. [2023-08-26 15:32:15,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102246 conditions, 47395 events. 34654/47395 cut-off events. For 5751/5841 co-relation queries the response was YES. Maximal size of possible extension queue 940. Compared 267176 event pairs, 6548 based on Foata normal form. 2/39476 useless extension candidates. Maximal degree in co-relation 102241. Up to 17361 conditions per place. [2023-08-26 15:32:15,984 INFO L140 encePairwiseOnDemand]: 309/315 looper letters, 122 selfloop transitions, 6 changer transitions 0/135 dead transitions. [2023-08-26 15:32:15,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 135 transitions, 605 flow [2023-08-26 15:32:15,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 15:32:15,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 15:32:15,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 831 transitions. [2023-08-26 15:32:15,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276190476190477 [2023-08-26 15:32:15,988 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 831 transitions. [2023-08-26 15:32:15,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 831 transitions. [2023-08-26 15:32:15,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:32:15,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 831 transitions. [2023-08-26 15:32:15,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.2) internal successors, (831), 5 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:15,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 315.0) internal successors, (1890), 6 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:15,994 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 315.0) internal successors, (1890), 6 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:15,995 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 132 flow. Second operand 5 states and 831 transitions. [2023-08-26 15:32:15,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 135 transitions, 605 flow [2023-08-26 15:32:16,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 135 transitions, 592 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 15:32:16,004 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 182 flow [2023-08-26 15:32:16,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2023-08-26 15:32:16,006 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2023-08-26 15:32:16,006 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 182 flow [2023-08-26 15:32:16,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:16,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:32:16,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:32:16,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 15:32:16,009 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 15:32:16,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:32:16,009 INFO L85 PathProgramCache]: Analyzing trace with hash 320965854, now seen corresponding path program 1 times [2023-08-26 15:32:16,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:32:16,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998988884] [2023-08-26 15:32:16,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:32:16,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:32:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:32:16,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 15:32:16,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:32:16,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998988884] [2023-08-26 15:32:16,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998988884] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:32:16,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:32:16,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 15:32:16,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847254309] [2023-08-26 15:32:16,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:32:16,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:32:16,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:32:16,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:32:16,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:32:16,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 315 [2023-08-26 15:32:16,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:16,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:32:16,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 315 [2023-08-26 15:32:16,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:32:20,191 INFO L124 PetriNetUnfolderBase]: 53365/74522 cut-off events. [2023-08-26 15:32:20,191 INFO L125 PetriNetUnfolderBase]: For 30176/31661 co-relation queries the response was YES. [2023-08-26 15:32:20,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178559 conditions, 74522 events. 53365/74522 cut-off events. For 30176/31661 co-relation queries the response was YES. Maximal size of possible extension queue 2018. Compared 486300 event pairs, 13804 based on Foata normal form. 1769/68120 useless extension candidates. Maximal degree in co-relation 178551. Up to 42623 conditions per place. [2023-08-26 15:32:20,540 INFO L140 encePairwiseOnDemand]: 303/315 looper letters, 68 selfloop transitions, 13 changer transitions 0/91 dead transitions. [2023-08-26 15:32:20,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 91 transitions, 468 flow [2023-08-26 15:32:20,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:32:20,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:32:20,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-08-26 15:32:20,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49417989417989416 [2023-08-26 15:32:20,542 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-08-26 15:32:20,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-08-26 15:32:20,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:32:20,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-08-26 15:32:20,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:20,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:20,545 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:20,545 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 182 flow. Second operand 3 states and 467 transitions. [2023-08-26 15:32:20,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 91 transitions, 468 flow [2023-08-26 15:32:20,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 91 transitions, 468 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 15:32:20,562 INFO L231 Difference]: Finished difference. Result has 59 places, 63 transitions, 271 flow [2023-08-26 15:32:20,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=59, PETRI_TRANSITIONS=63} [2023-08-26 15:32:20,562 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-08-26 15:32:20,563 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 63 transitions, 271 flow [2023-08-26 15:32:20,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:20,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:32:20,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:32:20,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 15:32:20,563 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 15:32:20,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:32:20,564 INFO L85 PathProgramCache]: Analyzing trace with hash -498795403, now seen corresponding path program 1 times [2023-08-26 15:32:20,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:32:20,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489564306] [2023-08-26 15:32:20,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:32:20,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:32:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:32:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 15:32:20,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:32:20,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489564306] [2023-08-26 15:32:20,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489564306] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:32:20,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:32:20,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 15:32:20,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247568248] [2023-08-26 15:32:20,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:32:20,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 15:32:20,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:32:20,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 15:32:20,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 15:32:20,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 315 [2023-08-26 15:32:20,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 63 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:20,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:32:20,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 315 [2023-08-26 15:32:20,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:32:26,506 INFO L124 PetriNetUnfolderBase]: 79972/107174 cut-off events. [2023-08-26 15:32:26,506 INFO L125 PetriNetUnfolderBase]: For 83767/83768 co-relation queries the response was YES. [2023-08-26 15:32:26,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309746 conditions, 107174 events. 79972/107174 cut-off events. For 83767/83768 co-relation queries the response was YES. Maximal size of possible extension queue 2155. Compared 625745 event pairs, 23226 based on Foata normal form. 792/104523 useless extension candidates. Maximal degree in co-relation 309736. Up to 67610 conditions per place. [2023-08-26 15:32:27,226 INFO L140 encePairwiseOnDemand]: 305/315 looper letters, 163 selfloop transitions, 15 changer transitions 0/179 dead transitions. [2023-08-26 15:32:27,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 179 transitions, 1122 flow [2023-08-26 15:32:27,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 15:32:27,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 15:32:27,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 807 transitions. [2023-08-26 15:32:27,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123809523809524 [2023-08-26 15:32:27,229 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 807 transitions. [2023-08-26 15:32:27,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 807 transitions. [2023-08-26 15:32:27,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:32:27,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 807 transitions. [2023-08-26 15:32:27,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.4) internal successors, (807), 5 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:27,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 315.0) internal successors, (1890), 6 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:27,234 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 315.0) internal successors, (1890), 6 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:27,234 INFO L175 Difference]: Start difference. First operand has 59 places, 63 transitions, 271 flow. Second operand 5 states and 807 transitions. [2023-08-26 15:32:27,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 179 transitions, 1122 flow [2023-08-26 15:32:27,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 179 transitions, 1080 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 15:32:27,276 INFO L231 Difference]: Finished difference. Result has 64 places, 72 transitions, 370 flow [2023-08-26 15:32:27,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=370, PETRI_PLACES=64, PETRI_TRANSITIONS=72} [2023-08-26 15:32:27,277 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2023-08-26 15:32:27,277 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 72 transitions, 370 flow [2023-08-26 15:32:27,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:27,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:32:27,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:32:27,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 15:32:27,278 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 15:32:27,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:32:27,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1415063819, now seen corresponding path program 1 times [2023-08-26 15:32:27,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:32:27,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483887280] [2023-08-26 15:32:27,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:32:27,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:32:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:32:27,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 15:32:27,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:32:27,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483887280] [2023-08-26 15:32:27,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483887280] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:32:27,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:32:27,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 15:32:27,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027189825] [2023-08-26 15:32:27,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:32:27,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 15:32:27,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:32:27,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 15:32:27,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 15:32:27,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 315 [2023-08-26 15:32:27,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 72 transitions, 370 flow. Second operand has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:27,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:32:27,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 315 [2023-08-26 15:32:27,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:32:28,320 INFO L124 PetriNetUnfolderBase]: 8574/13035 cut-off events. [2023-08-26 15:32:28,320 INFO L125 PetriNetUnfolderBase]: For 13436/13848 co-relation queries the response was YES. [2023-08-26 15:32:28,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36199 conditions, 13035 events. 8574/13035 cut-off events. For 13436/13848 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 74598 event pairs, 1532 based on Foata normal form. 1318/14214 useless extension candidates. Maximal degree in co-relation 36187. Up to 10654 conditions per place. [2023-08-26 15:32:28,373 INFO L140 encePairwiseOnDemand]: 307/315 looper letters, 58 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2023-08-26 15:32:28,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 503 flow [2023-08-26 15:32:28,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 15:32:28,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 15:32:28,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 557 transitions. [2023-08-26 15:32:28,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44206349206349205 [2023-08-26 15:32:28,375 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 557 transitions. [2023-08-26 15:32:28,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 557 transitions. [2023-08-26 15:32:28,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:32:28,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 557 transitions. [2023-08-26 15:32:28,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:28,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:28,378 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:28,378 INFO L175 Difference]: Start difference. First operand has 64 places, 72 transitions, 370 flow. Second operand 4 states and 557 transitions. [2023-08-26 15:32:28,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 503 flow [2023-08-26 15:32:28,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 79 transitions, 495 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-26 15:32:28,389 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 315 flow [2023-08-26 15:32:28,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=315, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2023-08-26 15:32:28,389 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2023-08-26 15:32:28,389 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 315 flow [2023-08-26 15:32:28,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:28,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:32:28,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:32:28,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 15:32:28,390 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting disposeErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 15:32:28,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:32:28,391 INFO L85 PathProgramCache]: Analyzing trace with hash -956194407, now seen corresponding path program 1 times [2023-08-26 15:32:28,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:32:28,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060282424] [2023-08-26 15:32:28,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:32:28,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:32:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:32:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 15:32:28,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:32:28,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060282424] [2023-08-26 15:32:28,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060282424] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:32:28,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:32:28,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 15:32:28,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444167906] [2023-08-26 15:32:28,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:32:28,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 15:32:28,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:32:28,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 15:32:28,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 15:32:28,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 315 [2023-08-26 15:32:28,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 315 flow. Second operand has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:28,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:32:28,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 315 [2023-08-26 15:32:28,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:32:29,143 INFO L124 PetriNetUnfolderBase]: 5686/8861 cut-off events. [2023-08-26 15:32:29,144 INFO L125 PetriNetUnfolderBase]: For 8105/8194 co-relation queries the response was YES. [2023-08-26 15:32:29,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24607 conditions, 8861 events. 5686/8861 cut-off events. For 8105/8194 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 49770 event pairs, 1295 based on Foata normal form. 532/9338 useless extension candidates. Maximal degree in co-relation 24594. Up to 5111 conditions per place. [2023-08-26 15:32:29,175 INFO L140 encePairwiseOnDemand]: 306/315 looper letters, 58 selfloop transitions, 16 changer transitions 0/85 dead transitions. [2023-08-26 15:32:29,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 85 transitions, 565 flow [2023-08-26 15:32:29,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 15:32:29,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 15:32:29,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 560 transitions. [2023-08-26 15:32:29,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-26 15:32:29,177 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 560 transitions. [2023-08-26 15:32:29,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 560 transitions. [2023-08-26 15:32:29,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:32:29,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 560 transitions. [2023-08-26 15:32:29,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:29,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:29,181 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:29,181 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 315 flow. Second operand 4 states and 560 transitions. [2023-08-26 15:32:29,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 85 transitions, 565 flow [2023-08-26 15:32:29,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 85 transitions, 542 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-26 15:32:29,193 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 333 flow [2023-08-26 15:32:29,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=333, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2023-08-26 15:32:29,194 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2023-08-26 15:32:29,194 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 333 flow [2023-08-26 15:32:29,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:29,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:32:29,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:32:29,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 15:32:29,195 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting disposeErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 15:32:29,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:32:29,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1908296237, now seen corresponding path program 1 times [2023-08-26 15:32:29,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:32:29,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227923650] [2023-08-26 15:32:29,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:32:29,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:32:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:32:29,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 15:32:29,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:32:29,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227923650] [2023-08-26 15:32:29,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227923650] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:32:29,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:32:29,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 15:32:29,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925623596] [2023-08-26 15:32:29,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:32:29,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 15:32:29,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:32:29,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 15:32:29,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-08-26 15:32:29,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 315 [2023-08-26 15:32:29,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 333 flow. Second operand has 8 states, 8 states have (on average 133.375) internal successors, (1067), 8 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:29,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:32:29,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 315 [2023-08-26 15:32:29,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:32:31,336 INFO L124 PetriNetUnfolderBase]: 16352/23833 cut-off events. [2023-08-26 15:32:31,337 INFO L125 PetriNetUnfolderBase]: For 24357/24358 co-relation queries the response was YES. [2023-08-26 15:32:31,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68325 conditions, 23833 events. 16352/23833 cut-off events. For 24357/24358 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 123361 event pairs, 2739 based on Foata normal form. 1038/24819 useless extension candidates. Maximal degree in co-relation 68312. Up to 5367 conditions per place. [2023-08-26 15:32:31,448 INFO L140 encePairwiseOnDemand]: 299/315 looper letters, 373 selfloop transitions, 64 changer transitions 3/441 dead transitions. [2023-08-26 15:32:31,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 441 transitions, 2840 flow [2023-08-26 15:32:31,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-26 15:32:31,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-26 15:32:31,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3412 transitions. [2023-08-26 15:32:31,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4709454796411318 [2023-08-26 15:32:31,457 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3412 transitions. [2023-08-26 15:32:31,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3412 transitions. [2023-08-26 15:32:31,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:32:31,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3412 transitions. [2023-08-26 15:32:31,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 148.34782608695653) internal successors, (3412), 23 states have internal predecessors, (3412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:31,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 315.0) internal successors, (7560), 24 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:31,476 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 315.0) internal successors, (7560), 24 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:31,476 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 333 flow. Second operand 23 states and 3412 transitions. [2023-08-26 15:32:31,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 441 transitions, 2840 flow [2023-08-26 15:32:31,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 441 transitions, 2734 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 15:32:31,515 INFO L231 Difference]: Finished difference. Result has 107 places, 117 transitions, 1040 flow [2023-08-26 15:32:31,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1040, PETRI_PLACES=107, PETRI_TRANSITIONS=117} [2023-08-26 15:32:31,516 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 51 predicate places. [2023-08-26 15:32:31,516 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 117 transitions, 1040 flow [2023-08-26 15:32:31,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 133.375) internal successors, (1067), 8 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:31,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:32:31,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:32:31,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 15:32:31,517 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 15:32:31,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:32:31,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1330303555, now seen corresponding path program 1 times [2023-08-26 15:32:31,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:32:31,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8876969] [2023-08-26 15:32:31,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:32:31,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:32:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:32:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 15:32:31,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:32:31,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8876969] [2023-08-26 15:32:31,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8876969] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:32:31,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:32:31,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 15:32:31,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677732788] [2023-08-26 15:32:31,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:32:31,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 15:32:31,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:32:31,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 15:32:31,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 15:32:31,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 315 [2023-08-26 15:32:31,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 117 transitions, 1040 flow. Second operand has 5 states, 5 states have (on average 137.2) internal successors, (686), 5 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:31,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:32:31,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 315 [2023-08-26 15:32:31,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:32:33,742 INFO L124 PetriNetUnfolderBase]: 16294/23705 cut-off events. [2023-08-26 15:32:33,743 INFO L125 PetriNetUnfolderBase]: For 118323/118324 co-relation queries the response was YES. [2023-08-26 15:32:33,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90603 conditions, 23705 events. 16294/23705 cut-off events. For 118323/118324 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 124157 event pairs, 6889 based on Foata normal form. 35/23723 useless extension candidates. Maximal degree in co-relation 90571. Up to 11288 conditions per place. [2023-08-26 15:32:33,864 INFO L140 encePairwiseOnDemand]: 306/315 looper letters, 169 selfloop transitions, 24 changer transitions 0/194 dead transitions. [2023-08-26 15:32:33,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 194 transitions, 2020 flow [2023-08-26 15:32:33,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 15:32:33,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 15:32:33,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 768 transitions. [2023-08-26 15:32:33,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876190476190476 [2023-08-26 15:32:33,867 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 768 transitions. [2023-08-26 15:32:33,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 768 transitions. [2023-08-26 15:32:33,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:32:33,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 768 transitions. [2023-08-26 15:32:33,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.6) internal successors, (768), 5 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:33,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 315.0) internal successors, (1890), 6 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:33,871 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 315.0) internal successors, (1890), 6 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:33,871 INFO L175 Difference]: Start difference. First operand has 107 places, 117 transitions, 1040 flow. Second operand 5 states and 768 transitions. [2023-08-26 15:32:33,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 194 transitions, 2020 flow [2023-08-26 15:32:34,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 194 transitions, 1988 flow, removed 16 selfloop flow, removed 0 redundant places. [2023-08-26 15:32:34,143 INFO L231 Difference]: Finished difference. Result has 112 places, 117 transitions, 1087 flow [2023-08-26 15:32:34,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1087, PETRI_PLACES=112, PETRI_TRANSITIONS=117} [2023-08-26 15:32:34,144 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 56 predicate places. [2023-08-26 15:32:34,144 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 117 transitions, 1087 flow [2023-08-26 15:32:34,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.2) internal successors, (686), 5 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:34,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:32:34,144 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:32:34,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 15:32:34,145 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting disposeErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 15:32:34,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:32:34,145 INFO L85 PathProgramCache]: Analyzing trace with hash -686433180, now seen corresponding path program 1 times [2023-08-26 15:32:34,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:32:34,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919568767] [2023-08-26 15:32:34,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:32:34,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:32:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:32:34,429 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 15:32:34,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:32:34,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919568767] [2023-08-26 15:32:34,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919568767] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 15:32:34,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485456291] [2023-08-26 15:32:34,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:32:34,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 15:32:34,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 15:32:34,432 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 15:32:34,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 15:32:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:32:34,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-26 15:32:34,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 15:32:34,752 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 15:32:34,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 15:32:34,846 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 15:32:34,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485456291] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 15:32:34,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 15:32:34,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2023-08-26 15:32:34,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267480333] [2023-08-26 15:32:34,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 15:32:34,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 15:32:34,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:32:34,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 15:32:34,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-08-26 15:32:34,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 315 [2023-08-26 15:32:34,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 117 transitions, 1087 flow. Second operand has 9 states, 9 states have (on average 132.77777777777777) internal successors, (1195), 9 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:34,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:32:34,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 315 [2023-08-26 15:32:34,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:32:37,171 INFO L124 PetriNetUnfolderBase]: 11525/17038 cut-off events. [2023-08-26 15:32:37,171 INFO L125 PetriNetUnfolderBase]: For 98308/98309 co-relation queries the response was YES. [2023-08-26 15:32:37,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59493 conditions, 17038 events. 11525/17038 cut-off events. For 98308/98309 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 87686 event pairs, 2337 based on Foata normal form. 996/18031 useless extension candidates. Maximal degree in co-relation 59459. Up to 5560 conditions per place. [2023-08-26 15:32:37,234 INFO L140 encePairwiseOnDemand]: 299/315 looper letters, 0 selfloop transitions, 0 changer transitions 277/277 dead transitions. [2023-08-26 15:32:37,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 277 transitions, 2489 flow [2023-08-26 15:32:37,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-26 15:32:37,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-26 15:32:37,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2279 transitions. [2023-08-26 15:32:37,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4521825396825397 [2023-08-26 15:32:37,239 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2279 transitions. [2023-08-26 15:32:37,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2279 transitions. [2023-08-26 15:32:37,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:32:37,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2279 transitions. [2023-08-26 15:32:37,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 142.4375) internal successors, (2279), 16 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:37,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 315.0) internal successors, (5355), 17 states have internal predecessors, (5355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:37,250 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 315.0) internal successors, (5355), 17 states have internal predecessors, (5355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:37,251 INFO L175 Difference]: Start difference. First operand has 112 places, 117 transitions, 1087 flow. Second operand 16 states and 2279 transitions. [2023-08-26 15:32:37,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 277 transitions, 2489 flow [2023-08-26 15:32:37,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 277 transitions, 2380 flow, removed 17 selfloop flow, removed 6 redundant places. [2023-08-26 15:32:37,406 INFO L231 Difference]: Finished difference. Result has 116 places, 0 transitions, 0 flow [2023-08-26 15:32:37,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=116, PETRI_TRANSITIONS=0} [2023-08-26 15:32:37,406 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 60 predicate places. [2023-08-26 15:32:37,406 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 0 transitions, 0 flow [2023-08-26 15:32:37,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 132.77777777777777) internal successors, (1195), 9 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:32:37,410 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-08-26 15:32:37,410 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-08-26 15:32:37,410 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-26 15:32:37,410 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-26 15:32:37,410 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-08-26 15:32:37,410 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-08-26 15:32:37,410 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (5 of 12 remaining) [2023-08-26 15:32:37,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2023-08-26 15:32:37,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 12 remaining) [2023-08-26 15:32:37,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 12 remaining) [2023-08-26 15:32:37,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location disposeErr0ASSERT_VIOLATIONASSERT (1 of 12 remaining) [2023-08-26 15:32:37,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location disposeErr0ASSERT_VIOLATIONASSERT (0 of 12 remaining) [2023-08-26 15:32:37,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 15:32:37,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-26 15:32:37,617 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:32:37,621 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 15:32:37,622 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 15:32:37,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:32:37 BasicIcfg [2023-08-26 15:32:37,624 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 15:32:37,625 INFO L158 Benchmark]: Toolchain (without parser) took 37312.65ms. Allocated memory was 415.2MB in the beginning and 11.9GB in the end (delta: 11.5GB). Free memory was 389.5MB in the beginning and 10.0GB in the end (delta: -9.6GB). Peak memory consumption was 2.1GB. Max. memory is 16.0GB. [2023-08-26 15:32:37,625 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 415.2MB. Free memory was 392.6MB in the beginning and 392.5MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 15:32:37,625 INFO L158 Benchmark]: CACSL2BoogieTranslator took 643.62ms. Allocated memory is still 415.2MB. Free memory was 388.8MB in the beginning and 358.5MB in the end (delta: 30.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-08-26 15:32:37,625 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.84ms. Allocated memory is still 415.2MB. Free memory was 358.5MB in the beginning and 355.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 15:32:37,626 INFO L158 Benchmark]: Boogie Preprocessor took 63.87ms. Allocated memory is still 415.2MB. Free memory was 355.8MB in the beginning and 353.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 15:32:37,626 INFO L158 Benchmark]: RCFGBuilder took 574.74ms. Allocated memory is still 415.2MB. Free memory was 353.0MB in the beginning and 330.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-26 15:32:37,626 INFO L158 Benchmark]: TraceAbstraction took 35966.04ms. Allocated memory was 415.2MB in the beginning and 11.9GB in the end (delta: 11.5GB). Free memory was 329.8MB in the beginning and 10.0GB in the end (delta: -9.7GB). Peak memory consumption was 2.0GB. Max. memory is 16.0GB. [2023-08-26 15:32:37,627 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 415.2MB. Free memory was 392.6MB in the beginning and 392.5MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 643.62ms. Allocated memory is still 415.2MB. Free memory was 388.8MB in the beginning and 358.5MB in the end (delta: 30.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.84ms. Allocated memory is still 415.2MB. Free memory was 358.5MB in the beginning and 355.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 63.87ms. Allocated memory is still 415.2MB. Free memory was 355.8MB in the beginning and 353.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 574.74ms. Allocated memory is still 415.2MB. Free memory was 353.0MB in the beginning and 330.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 35966.04ms. Allocated memory was 415.2MB in the beginning and 11.9GB in the end (delta: 11.5GB). Free memory was 329.8MB in the beginning and 10.0GB in the end (delta: -9.7GB). Peak memory consumption was 2.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0s, 159 PlacesBefore, 56 PlacesAfterwards, 163 TransitionsBefore, 53 TransitionsAfterwards, 10214 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 82 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 23 ConcurrentYvCompositions, 7 ChoiceCompositions, 149 TotalNumberOfCompositions, 21085 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9635, independent: 9281, independent conditional: 0, independent unconditional: 9281, dependent: 354, dependent conditional: 0, dependent unconditional: 354, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5131, independent: 5072, independent conditional: 0, independent unconditional: 5072, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9635, independent: 4209, independent conditional: 0, independent unconditional: 4209, dependent: 295, dependent conditional: 0, dependent unconditional: 295, unknown: 5131, unknown conditional: 0, unknown unconditional: 5131] , Statistics on independence cache: Total cache size (in pairs): 230, Positive cache size: 200, Positive conditional cache size: 0, Positive unconditional cache size: 200, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, 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: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 18]: 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, 223 locations, 12 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: 35.9s, OverallIterations: 14, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 28.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 997 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 997 mSDsluCounter, 41 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2772 IncrementalHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 14 mSDtfsCounter, 2772 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 68 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1087occurred in iteration=13, InterpolantAutomatonStates: 82, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 1484 SizeOfPredicates, 8 NumberOfNonLiveVariables, 257 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 16 InterpolantComputations, 13 PerfectInterpolantSequences, 18/24 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 15:32:37,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...