./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-complex/safestack_relacy.i --full-output --preprocessor.use.memory.slicer true --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-complex/safestack_relacy.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 17:06:06,279 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 17:06:06,368 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-22 17:06:06,374 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 17:06:06,375 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 17:06:06,402 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 17:06:06,403 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 17:06:06,403 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 17:06:06,404 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 17:06:06,408 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 17:06:06,409 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 17:06:06,409 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 17:06:06,409 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 17:06:06,410 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 17:06:06,411 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 17:06:06,411 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 17:06:06,411 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 17:06:06,411 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 17:06:06,412 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-22 17:06:06,412 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-22 17:06:06,412 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-22 17:06:06,413 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 17:06:06,413 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-22 17:06:06,413 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-22 17:06:06,413 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 17:06:06,414 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 17:06:06,414 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 17:06:06,414 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 17:06:06,415 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 17:06:06,415 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 17:06:06,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 17:06:06,416 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 17:06:06,416 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 17:06:06,417 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 17:06:06,417 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 17:06:06,417 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 17:06:06,417 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 17:06:06,417 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 17:06:06,418 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 17:06:06,418 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-22 17:06:06,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 17:06:06,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 17:06:06,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 17:06:06,679 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 17:06:06,679 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 17:06:06,680 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-complex/safestack_relacy.i [2023-11-22 17:06:07,816 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 17:06:08,136 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 17:06:08,137 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/safestack_relacy.i [2023-11-22 17:06:08,162 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96fb4f7a8/7e0aff43733744be8b5f1542721139dd/FLAG90e77faa8 [2023-11-22 17:06:08,177 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96fb4f7a8/7e0aff43733744be8b5f1542721139dd [2023-11-22 17:06:08,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 17:06:08,181 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 17:06:08,184 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 17:06:08,184 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 17:06:08,190 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 17:06:08,190 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 05:06:08" (1/1) ... [2023-11-22 17:06:08,191 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f998dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:06:08, skipping insertion in model container [2023-11-22 17:06:08,191 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 05:06:08" (1/1) ... [2023-11-22 17:06:08,256 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 17:06:08,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 17:06:08,854 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 17:06:08,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 17:06:08,979 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-22 17:06:08,980 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-22 17:06:08,987 INFO L206 MainTranslator]: Completed translation [2023-11-22 17:06:08,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:06:08 WrapperNode [2023-11-22 17:06:08,987 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 17:06:08,988 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 17:06:08,988 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 17:06:08,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 17:06:08,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:06:08" (1/1) ... [2023-11-22 17:06:09,020 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:06:08" (1/1) ... [2023-11-22 17:06:09,053 INFO L138 Inliner]: procedures = 481, calls = 75, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 288 [2023-11-22 17:06:09,053 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 17:06:09,054 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 17:06:09,054 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 17:06:09,054 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 17:06:09,062 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:06:08" (1/1) ... [2023-11-22 17:06:09,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:06:08" (1/1) ... [2023-11-22 17:06:09,068 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:06:08" (1/1) ... [2023-11-22 17:06:09,084 INFO L189 HeapSplitter]: Split 48 memory accesses to 4 slices as follows [2, 5, 34, 7] [2023-11-22 17:06:09,085 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:06:08" (1/1) ... [2023-11-22 17:06:09,085 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:06:08" (1/1) ... [2023-11-22 17:06:09,099 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:06:08" (1/1) ... [2023-11-22 17:06:09,103 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:06:08" (1/1) ... [2023-11-22 17:06:09,108 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:06:08" (1/1) ... [2023-11-22 17:06:09,110 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:06:08" (1/1) ... [2023-11-22 17:06:09,116 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 17:06:09,117 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 17:06:09,117 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 17:06:09,117 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 17:06:09,118 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:06:08" (1/1) ... [2023-11-22 17:06:09,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 17:06:09,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 17:06:09,169 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) [2023-11-22 17:06:09,195 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 [2023-11-22 17:06:09,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-22 17:06:09,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 17:06:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-22 17:06:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-22 17:06:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-22 17:06:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-22 17:06:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-22 17:06:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 17:06:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-22 17:06:09,231 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-22 17:06:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 17:06:09,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 17:06:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 17:06:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-22 17:06:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-22 17:06:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-22 17:06:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-22 17:06:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 17:06:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-22 17:06:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-22 17:06:09,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-22 17:06:09,237 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-22 17:06:09,486 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 17:06:09,489 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 17:06:09,971 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 17:06:10,233 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 17:06:10,233 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-22 17:06:10,234 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 05:06:10 BoogieIcfgContainer [2023-11-22 17:06:10,234 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 17:06:10,236 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 17:06:10,236 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 17:06:10,238 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 17:06:10,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 05:06:08" (1/3) ... [2023-11-22 17:06:10,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c5e36e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 05:06:10, skipping insertion in model container [2023-11-22 17:06:10,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:06:08" (2/3) ... [2023-11-22 17:06:10,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c5e36e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 05:06:10, skipping insertion in model container [2023-11-22 17:06:10,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 05:06:10" (3/3) ... [2023-11-22 17:06:10,241 INFO L112 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2023-11-22 17:06:10,258 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 17:06:10,258 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 68 error locations. [2023-11-22 17:06:10,258 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-22 17:06:10,381 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-22 17:06:10,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 141 transitions, 289 flow [2023-11-22 17:06:10,474 INFO L124 PetriNetUnfolderBase]: 14/153 cut-off events. [2023-11-22 17:06:10,474 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-22 17:06:10,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 153 events. 14/153 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 637 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 118. Up to 3 conditions per place. [2023-11-22 17:06:10,479 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 141 transitions, 289 flow [2023-11-22 17:06:10,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 141 transitions, 289 flow [2023-11-22 17:06:10,492 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 17:06:10,499 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=All, 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;@71d72d5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 17:06:10,499 INFO L358 AbstractCegarLoop]: Starting to check reachability of 124 error locations. [2023-11-22 17:06:10,501 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-22 17:06:10,502 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-22 17:06:10,502 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-22 17:06:10,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:06:10,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-22 17:06:10,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-22 17:06:10,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:06:10,508 INFO L85 PathProgramCache]: Analyzing trace with hash 30035, now seen corresponding path program 1 times [2023-11-22 17:06:10,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:06:10,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842446762] [2023-11-22 17:06:10,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:06:10,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:06:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:06:10,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:06:10,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:06:10,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842446762] [2023-11-22 17:06:10,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842446762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:06:10,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:06:10,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-22 17:06:10,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480767483] [2023-11-22 17:06:10,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:06:10,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 17:06:10,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:06:10,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 17:06:10,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 17:06:11,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 141 [2023-11-22 17:06:11,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 141 transitions, 289 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2023-11-22 17:06:11,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:06:11,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 141 [2023-11-22 17:06:11,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:06:11,329 INFO L124 PetriNetUnfolderBase]: 289/751 cut-off events. [2023-11-22 17:06:11,330 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2023-11-22 17:06:11,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1356 conditions, 751 events. 289/751 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3641 event pairs, 245 based on Foata normal form. 12/494 useless extension candidates. Maximal degree in co-relation 1290. Up to 597 conditions per place. [2023-11-22 17:06:11,341 INFO L140 encePairwiseOnDemand]: 109/141 looper letters, 78 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2023-11-22 17:06:11,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 110 transitions, 387 flow [2023-11-22 17:06:11,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 17:06:11,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-22 17:06:11,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 200 transitions. [2023-11-22 17:06:11,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4728132387706856 [2023-11-22 17:06:11,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 200 transitions. [2023-11-22 17:06:11,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 200 transitions. [2023-11-22 17:06:11,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:06:11,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 200 transitions. [2023-11-22 17:06:11,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2023-11-22 17:06:11,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2023-11-22 17:06:11,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2023-11-22 17:06:11,365 INFO L175 Difference]: Start difference. First operand has 130 places, 141 transitions, 289 flow. Second operand 3 states and 200 transitions. [2023-11-22 17:06:11,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 110 transitions, 387 flow [2023-11-22 17:06:11,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 110 transitions, 387 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-22 17:06:11,371 INFO L231 Difference]: Finished difference. Result has 106 places, 110 transitions, 231 flow [2023-11-22 17:06:11,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=106, PETRI_TRANSITIONS=110} [2023-11-22 17:06:11,377 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -24 predicate places. [2023-11-22 17:06:11,378 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 110 transitions, 231 flow [2023-11-22 17:06:11,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2023-11-22 17:06:11,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:06:11,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-22 17:06:11,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 17:06:11,379 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-22 17:06:11,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:06:11,380 INFO L85 PathProgramCache]: Analyzing trace with hash 30036, now seen corresponding path program 1 times [2023-11-22 17:06:11,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:06:11,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041986554] [2023-11-22 17:06:11,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:06:11,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:06:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:06:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:06:11,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:06:11,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041986554] [2023-11-22 17:06:11,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041986554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:06:11,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:06:11,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-22 17:06:11,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094303093] [2023-11-22 17:06:11,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:06:11,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 17:06:11,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:06:11,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 17:06:11,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 17:06:11,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 141 [2023-11-22 17:06:11,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 110 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2023-11-22 17:06:11,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:06:11,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 141 [2023-11-22 17:06:11,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:06:11,830 INFO L124 PetriNetUnfolderBase]: 289/750 cut-off events. [2023-11-22 17:06:11,830 INFO L125 PetriNetUnfolderBase]: For 4/6 co-relation queries the response was YES. [2023-11-22 17:06:11,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1357 conditions, 750 events. 289/750 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3645 event pairs, 245 based on Foata normal form. 0/482 useless extension candidates. Maximal degree in co-relation 1345. Up to 597 conditions per place. [2023-11-22 17:06:11,836 INFO L140 encePairwiseOnDemand]: 138/141 looper letters, 77 selfloop transitions, 2 changer transitions 0/109 dead transitions. [2023-11-22 17:06:11,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 109 transitions, 387 flow [2023-11-22 17:06:11,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 17:06:11,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-22 17:06:11,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2023-11-22 17:06:11,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40189125295508277 [2023-11-22 17:06:11,842 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 170 transitions. [2023-11-22 17:06:11,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 170 transitions. [2023-11-22 17:06:11,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:06:11,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 170 transitions. [2023-11-22 17:06:11,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2023-11-22 17:06:11,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2023-11-22 17:06:11,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2023-11-22 17:06:11,848 INFO L175 Difference]: Start difference. First operand has 106 places, 110 transitions, 231 flow. Second operand 3 states and 170 transitions. [2023-11-22 17:06:11,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 109 transitions, 387 flow [2023-11-22 17:06:11,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 109 transitions, 383 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-22 17:06:11,855 INFO L231 Difference]: Finished difference. Result has 105 places, 109 transitions, 229 flow [2023-11-22 17:06:11,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=105, PETRI_TRANSITIONS=109} [2023-11-22 17:06:11,856 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -25 predicate places. [2023-11-22 17:06:11,857 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 109 transitions, 229 flow [2023-11-22 17:06:11,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2023-11-22 17:06:11,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:06:11,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-22 17:06:11,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 17:06:11,862 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-22 17:06:11,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:06:11,863 INFO L85 PathProgramCache]: Analyzing trace with hash 28894691, now seen corresponding path program 1 times [2023-11-22 17:06:11,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:06:11,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74401382] [2023-11-22 17:06:11,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:06:11,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:06:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:06:11,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:06:11,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:06:11,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74401382] [2023-11-22 17:06:11,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74401382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:06:11,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:06:11,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 17:06:11,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114427638] [2023-11-22 17:06:11,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:06:11,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 17:06:11,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:06:11,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 17:06:11,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 17:06:12,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 141 [2023-11-22 17:06:12,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 109 transitions, 229 flow. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 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) [2023-11-22 17:06:12,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:06:12,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 141 [2023-11-22 17:06:12,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:06:12,352 INFO L124 PetriNetUnfolderBase]: 479/1162 cut-off events. [2023-11-22 17:06:12,352 INFO L125 PetriNetUnfolderBase]: For 5/7 co-relation queries the response was YES. [2023-11-22 17:06:12,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2141 conditions, 1162 events. 479/1162 cut-off events. For 5/7 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5864 event pairs, 255 based on Foata normal form. 0/779 useless extension candidates. Maximal degree in co-relation 2129. Up to 594 conditions per place. [2023-11-22 17:06:12,358 INFO L140 encePairwiseOnDemand]: 126/141 looper letters, 108 selfloop transitions, 10 changer transitions 0/144 dead transitions. [2023-11-22 17:06:12,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 144 transitions, 538 flow [2023-11-22 17:06:12,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 17:06:12,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-22 17:06:12,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2023-11-22 17:06:12,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024822695035461 [2023-11-22 17:06:12,361 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 227 transitions. [2023-11-22 17:06:12,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 227 transitions. [2023-11-22 17:06:12,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:06:12,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 227 transitions. [2023-11-22 17:06:12,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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) [2023-11-22 17:06:12,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-11-22 17:06:12,364 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-11-22 17:06:12,364 INFO L175 Difference]: Start difference. First operand has 105 places, 109 transitions, 229 flow. Second operand 4 states and 227 transitions. [2023-11-22 17:06:12,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 144 transitions, 538 flow [2023-11-22 17:06:12,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 144 transitions, 534 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-22 17:06:12,367 INFO L231 Difference]: Finished difference. Result has 104 places, 108 transitions, 265 flow [2023-11-22 17:06:12,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=265, PETRI_PLACES=104, PETRI_TRANSITIONS=108} [2023-11-22 17:06:12,368 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -26 predicate places. [2023-11-22 17:06:12,369 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 108 transitions, 265 flow [2023-11-22 17:06:12,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 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) [2023-11-22 17:06:12,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:06:12,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-22 17:06:12,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 17:06:12,370 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-22 17:06:12,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:06:12,370 INFO L85 PathProgramCache]: Analyzing trace with hash 28894692, now seen corresponding path program 1 times [2023-11-22 17:06:12,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:06:12,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497945070] [2023-11-22 17:06:12,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:06:12,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:06:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:06:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:06:12,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:06:12,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497945070] [2023-11-22 17:06:12,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497945070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:06:12,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:06:12,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 17:06:12,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135523968] [2023-11-22 17:06:12,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:06:12,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 17:06:12,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:06:12,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 17:06:12,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 17:06:12,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 141 [2023-11-22 17:06:12,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 108 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2023-11-22 17:06:12,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:06:12,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 141 [2023-11-22 17:06:12,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:06:12,787 INFO L124 PetriNetUnfolderBase]: 474/1198 cut-off events. [2023-11-22 17:06:12,787 INFO L125 PetriNetUnfolderBase]: For 32/34 co-relation queries the response was YES. [2023-11-22 17:06:12,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2245 conditions, 1198 events. 474/1198 cut-off events. For 32/34 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6349 event pairs, 80 based on Foata normal form. 0/805 useless extension candidates. Maximal degree in co-relation 2164. Up to 757 conditions per place. [2023-11-22 17:06:12,793 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 96 selfloop transitions, 5 changer transitions 0/131 dead transitions. [2023-11-22 17:06:12,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 131 transitions, 516 flow [2023-11-22 17:06:12,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 17:06:12,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-22 17:06:12,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 220 transitions. [2023-11-22 17:06:12,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3900709219858156 [2023-11-22 17:06:12,795 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 220 transitions. [2023-11-22 17:06:12,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 220 transitions. [2023-11-22 17:06:12,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:06:12,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 220 transitions. [2023-11-22 17:06:12,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 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) [2023-11-22 17:06:12,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-11-22 17:06:12,798 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-11-22 17:06:12,798 INFO L175 Difference]: Start difference. First operand has 104 places, 108 transitions, 265 flow. Second operand 4 states and 220 transitions. [2023-11-22 17:06:12,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 131 transitions, 516 flow [2023-11-22 17:06:12,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 131 transitions, 510 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-22 17:06:12,802 INFO L231 Difference]: Finished difference. Result has 106 places, 109 transitions, 280 flow [2023-11-22 17:06:12,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=106, PETRI_TRANSITIONS=109} [2023-11-22 17:06:12,803 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -24 predicate places. [2023-11-22 17:06:12,804 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 109 transitions, 280 flow [2023-11-22 17:06:12,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2023-11-22 17:06:12,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:06:12,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:06:12,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 17:06:12,805 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-22 17:06:12,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:06:12,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1809299395, now seen corresponding path program 1 times [2023-11-22 17:06:12,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:06:12,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967596814] [2023-11-22 17:06:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:06:12,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:06:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:06:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:06:12,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:06:12,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967596814] [2023-11-22 17:06:12,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967596814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:06:12,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:06:12,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 17:06:12,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361827571] [2023-11-22 17:06:12,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:06:12,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 17:06:12,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:06:12,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 17:06:12,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-22 17:06:12,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 141 [2023-11-22 17:06:12,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 109 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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) [2023-11-22 17:06:12,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:06:12,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 141 [2023-11-22 17:06:12,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:06:13,095 INFO L124 PetriNetUnfolderBase]: 474/1202 cut-off events. [2023-11-22 17:06:13,096 INFO L125 PetriNetUnfolderBase]: For 32/34 co-relation queries the response was YES. [2023-11-22 17:06:13,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2294 conditions, 1202 events. 474/1202 cut-off events. For 32/34 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6348 event pairs, 400 based on Foata normal form. 0/808 useless extension candidates. Maximal degree in co-relation 2200. Up to 946 conditions per place. [2023-11-22 17:06:13,102 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 79 selfloop transitions, 4 changer transitions 0/113 dead transitions. [2023-11-22 17:06:13,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 113 transitions, 458 flow [2023-11-22 17:06:13,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 17:06:13,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-22 17:06:13,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2023-11-22 17:06:13,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3546099290780142 [2023-11-22 17:06:13,104 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 200 transitions. [2023-11-22 17:06:13,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 200 transitions. [2023-11-22 17:06:13,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:06:13,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 200 transitions. [2023-11-22 17:06:13,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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) [2023-11-22 17:06:13,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-11-22 17:06:13,106 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-11-22 17:06:13,107 INFO L175 Difference]: Start difference. First operand has 106 places, 109 transitions, 280 flow. Second operand 4 states and 200 transitions. [2023-11-22 17:06:13,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 113 transitions, 458 flow [2023-11-22 17:06:13,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 113 transitions, 453 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-22 17:06:13,111 INFO L231 Difference]: Finished difference. Result has 108 places, 110 transitions, 293 flow [2023-11-22 17:06:13,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=293, PETRI_PLACES=108, PETRI_TRANSITIONS=110} [2023-11-22 17:06:13,113 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -22 predicate places. [2023-11-22 17:06:13,114 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 110 transitions, 293 flow [2023-11-22 17:06:13,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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) [2023-11-22 17:06:13,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:06:13,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:06:13,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-22 17:06:13,115 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-22 17:06:13,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:06:13,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1809299386, now seen corresponding path program 1 times [2023-11-22 17:06:13,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:06:13,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128568587] [2023-11-22 17:06:13,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:06:13,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:06:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:06:13,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:06:13,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:06:13,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128568587] [2023-11-22 17:06:13,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128568587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:06:13,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:06:13,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 17:06:13,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291302923] [2023-11-22 17:06:13,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:06:13,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 17:06:13,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:06:13,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 17:06:13,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 17:06:13,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 141 [2023-11-22 17:06:13,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 110 transitions, 293 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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) [2023-11-22 17:06:13,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:06:13,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 141 [2023-11-22 17:06:13,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:06:13,633 INFO L124 PetriNetUnfolderBase]: 474/1201 cut-off events. [2023-11-22 17:06:13,633 INFO L125 PetriNetUnfolderBase]: For 38/40 co-relation queries the response was YES. [2023-11-22 17:06:13,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2287 conditions, 1201 events. 474/1201 cut-off events. For 38/40 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6361 event pairs, 80 based on Foata normal form. 0/809 useless extension candidates. Maximal degree in co-relation 2237. Up to 757 conditions per place. [2023-11-22 17:06:13,640 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 98 selfloop transitions, 6 changer transitions 0/134 dead transitions. [2023-11-22 17:06:13,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 134 transitions, 554 flow [2023-11-22 17:06:13,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 17:06:13,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-22 17:06:13,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 253 transitions. [2023-11-22 17:06:13,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588652482269504 [2023-11-22 17:06:13,641 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 253 transitions. [2023-11-22 17:06:13,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 253 transitions. [2023-11-22 17:06:13,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:06:13,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 253 transitions. [2023-11-22 17:06:13,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 50.6) internal successors, (253), 5 states have internal predecessors, (253), 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) [2023-11-22 17:06:13,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2023-11-22 17:06:13,644 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2023-11-22 17:06:13,644 INFO L175 Difference]: Start difference. First operand has 108 places, 110 transitions, 293 flow. Second operand 5 states and 253 transitions. [2023-11-22 17:06:13,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 134 transitions, 554 flow [2023-11-22 17:06:13,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 134 transitions, 548 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-22 17:06:13,648 INFO L231 Difference]: Finished difference. Result has 112 places, 111 transitions, 311 flow [2023-11-22 17:06:13,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=311, PETRI_PLACES=112, PETRI_TRANSITIONS=111} [2023-11-22 17:06:13,648 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -18 predicate places. [2023-11-22 17:06:13,649 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 111 transitions, 311 flow [2023-11-22 17:06:13,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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) [2023-11-22 17:06:13,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:06:13,649 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:06:13,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-22 17:06:13,649 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-22 17:06:13,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:06:13,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1000583597, now seen corresponding path program 1 times [2023-11-22 17:06:13,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:06:13,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492008307] [2023-11-22 17:06:13,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:06:13,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:06:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:06:13,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:06:13,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:06:13,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492008307] [2023-11-22 17:06:13,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492008307] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 17:06:13,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446656693] [2023-11-22 17:06:13,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:06:13,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 17:06:13,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 17:06:13,828 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) [2023-11-22 17:06:13,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 17:06:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:06:13,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-22 17:06:13,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 17:06:14,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:06:14,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 17:06:14,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:06:14,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446656693] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 17:06:14,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 17:06:14,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-11-22 17:06:14,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993556483] [2023-11-22 17:06:14,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 17:06:14,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-22 17:06:14,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:06:14,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-22 17:06:14,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-22 17:06:14,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 141 [2023-11-22 17:06:14,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 111 transitions, 311 flow. Second operand has 14 states, 14 states have (on average 32.142857142857146) internal successors, (450), 14 states have internal predecessors, (450), 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) [2023-11-22 17:06:14,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:06:14,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 141 [2023-11-22 17:06:14,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:06:15,032 INFO L124 PetriNetUnfolderBase]: 477/1222 cut-off events. [2023-11-22 17:06:15,032 INFO L125 PetriNetUnfolderBase]: For 58/60 co-relation queries the response was YES. [2023-11-22 17:06:15,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2369 conditions, 1222 events. 477/1222 cut-off events. For 58/60 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6529 event pairs, 80 based on Foata normal form. 3/831 useless extension candidates. Maximal degree in co-relation 2325. Up to 757 conditions per place. [2023-11-22 17:06:15,038 INFO L140 encePairwiseOnDemand]: 131/141 looper letters, 103 selfloop transitions, 22 changer transitions 0/155 dead transitions. [2023-11-22 17:06:15,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 155 transitions, 694 flow [2023-11-22 17:06:15,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 17:06:15,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-22 17:06:15,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 516 transitions. [2023-11-22 17:06:15,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.281505728314239 [2023-11-22 17:06:15,041 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 516 transitions. [2023-11-22 17:06:15,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 516 transitions. [2023-11-22 17:06:15,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:06:15,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 516 transitions. [2023-11-22 17:06:15,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 39.69230769230769) internal successors, (516), 13 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:06:15,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 141.0) internal successors, (1974), 14 states have internal predecessors, (1974), 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) [2023-11-22 17:06:15,045 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 141.0) internal successors, (1974), 14 states have internal predecessors, (1974), 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) [2023-11-22 17:06:15,045 INFO L175 Difference]: Start difference. First operand has 112 places, 111 transitions, 311 flow. Second operand 13 states and 516 transitions. [2023-11-22 17:06:15,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 155 transitions, 694 flow [2023-11-22 17:06:15,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 155 transitions, 689 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-22 17:06:15,049 INFO L231 Difference]: Finished difference. Result has 126 places, 124 transitions, 436 flow [2023-11-22 17:06:15,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=436, PETRI_PLACES=126, PETRI_TRANSITIONS=124} [2023-11-22 17:06:15,050 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -4 predicate places. [2023-11-22 17:06:15,050 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 124 transitions, 436 flow [2023-11-22 17:06:15,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 32.142857142857146) internal successors, (450), 14 states have internal predecessors, (450), 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) [2023-11-22 17:06:15,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:06:15,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:06:15,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-22 17:06:15,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 17:06:15,267 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-22 17:06:15,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:06:15,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1000583588, now seen corresponding path program 1 times [2023-11-22 17:06:15,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:06:15,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110774075] [2023-11-22 17:06:15,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:06:15,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:06:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:06:15,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:06:15,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:06:15,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110774075] [2023-11-22 17:06:15,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110774075] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 17:06:15,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574983517] [2023-11-22 17:06:15,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:06:15,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 17:06:15,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 17:06:15,372 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 17:06:15,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 17:06:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:06:15,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-22 17:06:15,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 17:06:15,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:06:15,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 17:06:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:06:15,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574983517] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 17:06:15,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 17:06:15,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-22 17:06:15,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849374603] [2023-11-22 17:06:15,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 17:06:15,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 17:06:15,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:06:15,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 17:06:15,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-22 17:06:15,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 141 [2023-11-22 17:06:15,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 124 transitions, 436 flow. Second operand has 10 states, 10 states have (on average 32.4) internal successors, (324), 10 states have internal predecessors, (324), 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) [2023-11-22 17:06:15,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:06:15,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 141 [2023-11-22 17:06:15,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:06:15,893 INFO L124 PetriNetUnfolderBase]: 476/1218 cut-off events. [2023-11-22 17:06:15,893 INFO L125 PetriNetUnfolderBase]: For 106/108 co-relation queries the response was YES. [2023-11-22 17:06:15,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2406 conditions, 1218 events. 476/1218 cut-off events. For 106/108 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6475 event pairs, 400 based on Foata normal form. 1/829 useless extension candidates. Maximal degree in co-relation 2351. Up to 948 conditions per place. [2023-11-22 17:06:15,900 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 80 selfloop transitions, 13 changer transitions 0/123 dead transitions. [2023-11-22 17:06:15,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 123 transitions, 615 flow [2023-11-22 17:06:15,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 17:06:15,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-22 17:06:15,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 230 transitions. [2023-11-22 17:06:15,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3262411347517731 [2023-11-22 17:06:15,902 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 230 transitions. [2023-11-22 17:06:15,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 230 transitions. [2023-11-22 17:06:15,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:06:15,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 230 transitions. [2023-11-22 17:06:15,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 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) [2023-11-22 17:06:15,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2023-11-22 17:06:15,905 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2023-11-22 17:06:15,905 INFO L175 Difference]: Start difference. First operand has 126 places, 124 transitions, 436 flow. Second operand 5 states and 230 transitions. [2023-11-22 17:06:15,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 123 transitions, 615 flow [2023-11-22 17:06:15,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 123 transitions, 580 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-22 17:06:15,910 INFO L231 Difference]: Finished difference. Result has 124 places, 122 transitions, 426 flow [2023-11-22 17:06:15,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=426, PETRI_PLACES=124, PETRI_TRANSITIONS=122} [2023-11-22 17:06:15,912 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -6 predicate places. [2023-11-22 17:06:15,912 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 122 transitions, 426 flow [2023-11-22 17:06:15,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.4) internal successors, (324), 10 states have internal predecessors, (324), 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) [2023-11-22 17:06:15,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:06:15,912 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:06:15,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 17:06:16,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-22 17:06:16,137 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-22 17:06:16,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:06:16,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1311931101, now seen corresponding path program 2 times [2023-11-22 17:06:16,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:06:16,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401623235] [2023-11-22 17:06:16,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:06:16,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:06:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:06:16,294 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 17:06:16,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:06:16,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401623235] [2023-11-22 17:06:16,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401623235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:06:16,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:06:16,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 17:06:16,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097002312] [2023-11-22 17:06:16,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:06:16,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 17:06:16,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:06:16,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 17:06:16,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 17:06:16,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 141 [2023-11-22 17:06:16,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 122 transitions, 426 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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) [2023-11-22 17:06:16,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:06:16,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 141 [2023-11-22 17:06:16,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:06:16,561 INFO L124 PetriNetUnfolderBase]: 476/1215 cut-off events. [2023-11-22 17:06:16,561 INFO L125 PetriNetUnfolderBase]: For 70/72 co-relation queries the response was YES. [2023-11-22 17:06:16,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 1215 events. 476/1215 cut-off events. For 70/72 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6456 event pairs, 400 based on Foata normal form. 3/828 useless extension candidates. Maximal degree in co-relation 2342. Up to 948 conditions per place. [2023-11-22 17:06:16,569 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 86 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2023-11-22 17:06:16,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 121 transitions, 606 flow [2023-11-22 17:06:16,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 17:06:16,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-22 17:06:16,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2023-11-22 17:06:16,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34574468085106386 [2023-11-22 17:06:16,570 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 195 transitions. [2023-11-22 17:06:16,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 195 transitions. [2023-11-22 17:06:16,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:06:16,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 195 transitions. [2023-11-22 17:06:16,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 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) [2023-11-22 17:06:16,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-11-22 17:06:16,574 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-11-22 17:06:16,574 INFO L175 Difference]: Start difference. First operand has 124 places, 122 transitions, 426 flow. Second operand 4 states and 195 transitions. [2023-11-22 17:06:16,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 121 transitions, 606 flow [2023-11-22 17:06:16,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 121 transitions, 600 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-22 17:06:16,578 INFO L231 Difference]: Finished difference. Result has 124 places, 121 transitions, 428 flow [2023-11-22 17:06:16,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=428, PETRI_PLACES=124, PETRI_TRANSITIONS=121} [2023-11-22 17:06:16,579 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -6 predicate places. [2023-11-22 17:06:16,579 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 121 transitions, 428 flow [2023-11-22 17:06:16,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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) [2023-11-22 17:06:16,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:06:16,580 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:06:16,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-22 17:06:16,580 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-22 17:06:16,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:06:16,581 INFO L85 PathProgramCache]: Analyzing trace with hash 463887611, now seen corresponding path program 1 times [2023-11-22 17:06:16,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:06:16,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852798916] [2023-11-22 17:06:16,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:06:16,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:06:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:06:16,735 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 17:06:16,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:06:16,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852798916] [2023-11-22 17:06:16,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852798916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:06:16,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:06:16,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 17:06:16,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842993294] [2023-11-22 17:06:16,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:06:16,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 17:06:16,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:06:16,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 17:06:16,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-22 17:06:16,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 141 [2023-11-22 17:06:16,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 121 transitions, 428 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2023-11-22 17:06:16,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:06:16,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 141 [2023-11-22 17:06:16,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:06:17,017 INFO L124 PetriNetUnfolderBase]: 595/1479 cut-off events. [2023-11-22 17:06:17,017 INFO L125 PetriNetUnfolderBase]: For 89/92 co-relation queries the response was YES. [2023-11-22 17:06:17,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2914 conditions, 1479 events. 595/1479 cut-off events. For 89/92 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 8745 event pairs, 205 based on Foata normal form. 33/1057 useless extension candidates. Maximal degree in co-relation 2863. Up to 1024 conditions per place. [2023-11-22 17:06:17,026 INFO L140 encePairwiseOnDemand]: 131/141 looper letters, 124 selfloop transitions, 11 changer transitions 1/164 dead transitions. [2023-11-22 17:06:17,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 164 transitions, 795 flow [2023-11-22 17:06:17,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 17:06:17,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-22 17:06:17,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2023-11-22 17:06:17,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42021276595744683 [2023-11-22 17:06:17,028 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 237 transitions. [2023-11-22 17:06:17,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 237 transitions. [2023-11-22 17:06:17,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:06:17,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 237 transitions. [2023-11-22 17:06:17,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 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) [2023-11-22 17:06:17,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-11-22 17:06:17,030 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-11-22 17:06:17,030 INFO L175 Difference]: Start difference. First operand has 124 places, 121 transitions, 428 flow. Second operand 4 states and 237 transitions. [2023-11-22 17:06:17,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 164 transitions, 795 flow [2023-11-22 17:06:17,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 164 transitions, 785 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-22 17:06:17,038 INFO L231 Difference]: Finished difference. Result has 126 places, 126 transitions, 487 flow [2023-11-22 17:06:17,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=487, PETRI_PLACES=126, PETRI_TRANSITIONS=126} [2023-11-22 17:06:17,039 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -4 predicate places. [2023-11-22 17:06:17,039 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 126 transitions, 487 flow [2023-11-22 17:06:17,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2023-11-22 17:06:17,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:06:17,040 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:06:17,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-22 17:06:17,040 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-22 17:06:17,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:06:17,040 INFO L85 PathProgramCache]: Analyzing trace with hash 463887610, now seen corresponding path program 1 times [2023-11-22 17:06:17,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:06:17,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707744604] [2023-11-22 17:06:17,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:06:17,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:06:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:06:17,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 17:06:17,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:06:17,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707744604] [2023-11-22 17:06:17,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707744604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:06:17,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:06:17,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-22 17:06:17,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159463171] [2023-11-22 17:06:17,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:06:17,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 17:06:17,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:06:17,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 17:06:17,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 17:06:17,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 141 [2023-11-22 17:06:17,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 126 transitions, 487 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2023-11-22 17:06:17,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:06:17,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 141 [2023-11-22 17:06:17,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:06:17,472 INFO L124 PetriNetUnfolderBase]: 641/1559 cut-off events. [2023-11-22 17:06:17,472 INFO L125 PetriNetUnfolderBase]: For 601/675 co-relation queries the response was YES. [2023-11-22 17:06:17,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3521 conditions, 1559 events. 641/1559 cut-off events. For 601/675 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8910 event pairs, 235 based on Foata normal form. 101/1264 useless extension candidates. Maximal degree in co-relation 3468. Up to 795 conditions per place. [2023-11-22 17:06:17,482 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 149 selfloop transitions, 4 changer transitions 0/181 dead transitions. [2023-11-22 17:06:17,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 181 transitions, 918 flow [2023-11-22 17:06:17,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 17:06:17,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-22 17:06:17,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2023-11-22 17:06:17,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2023-11-22 17:06:17,483 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 222 transitions. [2023-11-22 17:06:17,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 222 transitions. [2023-11-22 17:06:17,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:06:17,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 222 transitions. [2023-11-22 17:06:17,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2023-11-22 17:06:17,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2023-11-22 17:06:17,485 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2023-11-22 17:06:17,485 INFO L175 Difference]: Start difference. First operand has 126 places, 126 transitions, 487 flow. Second operand 3 states and 222 transitions. [2023-11-22 17:06:17,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 181 transitions, 918 flow [2023-11-22 17:06:17,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 181 transitions, 913 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-22 17:06:17,490 INFO L231 Difference]: Finished difference. Result has 128 places, 127 transitions, 506 flow [2023-11-22 17:06:17,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=506, PETRI_PLACES=128, PETRI_TRANSITIONS=127} [2023-11-22 17:06:17,490 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -2 predicate places. [2023-11-22 17:06:17,491 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 127 transitions, 506 flow [2023-11-22 17:06:17,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2023-11-22 17:06:17,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:06:17,491 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-11-22 17:06:17,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-22 17:06:17,491 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-22 17:06:17,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:06:17,492 INFO L85 PathProgramCache]: Analyzing trace with hash 533449338, now seen corresponding path program 2 times [2023-11-22 17:06:17,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:06:17,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854662867] [2023-11-22 17:06:17,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:06:17,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:06:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:06:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 17:06:17,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:06:17,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854662867] [2023-11-22 17:06:17,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854662867] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 17:06:17,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677535407] [2023-11-22 17:06:17,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 17:06:17,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 17:06:17,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 17:06:17,695 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 17:06:17,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 17:06:17,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 17:06:17,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 17:06:17,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 17:06:17,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 17:06:17,885 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 17:06:17,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 17:06:17,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677535407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:06:17,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 17:06:17,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-11-22 17:06:17,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541259013] [2023-11-22 17:06:17,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:06:17,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 17:06:17,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:06:17,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 17:06:17,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2023-11-22 17:06:17,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 141 [2023-11-22 17:06:17,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 127 transitions, 506 flow. Second operand has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 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) [2023-11-22 17:06:17,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:06:17,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 141 [2023-11-22 17:06:17,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:06:18,127 INFO L124 PetriNetUnfolderBase]: 530/1327 cut-off events. [2023-11-22 17:06:18,127 INFO L125 PetriNetUnfolderBase]: For 621/695 co-relation queries the response was YES. [2023-11-22 17:06:18,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3054 conditions, 1327 events. 530/1327 cut-off events. For 621/695 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7295 event pairs, 290 based on Foata normal form. 1/986 useless extension candidates. Maximal degree in co-relation 3037. Up to 1081 conditions per place. [2023-11-22 17:06:18,139 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 81 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2023-11-22 17:06:18,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 116 transitions, 572 flow [2023-11-22 17:06:18,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 17:06:18,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-22 17:06:18,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 257 transitions. [2023-11-22 17:06:18,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3037825059101655 [2023-11-22 17:06:18,142 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 257 transitions. [2023-11-22 17:06:18,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 257 transitions. [2023-11-22 17:06:18,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:06:18,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 257 transitions. [2023-11-22 17:06:18,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 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) [2023-11-22 17:06:18,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 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) [2023-11-22 17:06:18,145 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 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) [2023-11-22 17:06:18,145 INFO L175 Difference]: Start difference. First operand has 128 places, 127 transitions, 506 flow. Second operand 6 states and 257 transitions. [2023-11-22 17:06:18,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 116 transitions, 572 flow [2023-11-22 17:06:18,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 116 transitions, 541 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-11-22 17:06:18,148 INFO L231 Difference]: Finished difference. Result has 120 places, 115 transitions, 377 flow [2023-11-22 17:06:18,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=377, PETRI_PLACES=120, PETRI_TRANSITIONS=115} [2023-11-22 17:06:18,150 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -10 predicate places. [2023-11-22 17:06:18,150 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 115 transitions, 377 flow [2023-11-22 17:06:18,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 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) [2023-11-22 17:06:18,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:06:18,151 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:06:18,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 17:06:18,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 17:06:18,371 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-22 17:06:18,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:06:18,372 INFO L85 PathProgramCache]: Analyzing trace with hash -119582292, now seen corresponding path program 1 times [2023-11-22 17:06:18,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:06:18,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258162915] [2023-11-22 17:06:18,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:06:18,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:06:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:06:18,577 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 17:06:18,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:06:18,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258162915] [2023-11-22 17:06:18,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258162915] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 17:06:18,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105699245] [2023-11-22 17:06:18,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:06:18,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 17:06:18,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 17:06:18,579 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 17:06:18,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 17:06:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:06:18,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-22 17:06:18,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 17:06:18,829 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 17:06:18,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 17:06:18,919 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 17:06:18,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105699245] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 17:06:18,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 17:06:18,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-11-22 17:06:18,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998475104] [2023-11-22 17:06:18,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 17:06:18,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 17:06:18,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:06:18,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 17:06:18,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-22 17:06:19,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 141 [2023-11-22 17:06:19,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 115 transitions, 377 flow. Second operand has 11 states, 11 states have (on average 30.636363636363637) internal successors, (337), 11 states have internal predecessors, (337), 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) [2023-11-22 17:06:19,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:06:19,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 141 [2023-11-22 17:06:19,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:06:19,606 INFO L124 PetriNetUnfolderBase]: 923/2295 cut-off events. [2023-11-22 17:06:19,606 INFO L125 PetriNetUnfolderBase]: For 820/820 co-relation queries the response was YES. [2023-11-22 17:06:19,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5092 conditions, 2295 events. 923/2295 cut-off events. For 820/820 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 15719 event pairs, 400 based on Foata normal form. 34/1708 useless extension candidates. Maximal degree in co-relation 5079. Up to 1429 conditions per place. [2023-11-22 17:06:19,619 INFO L140 encePairwiseOnDemand]: 131/141 looper letters, 168 selfloop transitions, 13 changer transitions 0/207 dead transitions. [2023-11-22 17:06:19,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 207 transitions, 954 flow [2023-11-22 17:06:19,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 17:06:19,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-22 17:06:19,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 331 transitions. [2023-11-22 17:06:19,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3912529550827423 [2023-11-22 17:06:19,621 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 331 transitions. [2023-11-22 17:06:19,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 331 transitions. [2023-11-22 17:06:19,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:06:19,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 331 transitions. [2023-11-22 17:06:19,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 55.166666666666664) internal successors, (331), 6 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:06:19,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 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) [2023-11-22 17:06:19,624 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 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) [2023-11-22 17:06:19,624 INFO L175 Difference]: Start difference. First operand has 120 places, 115 transitions, 377 flow. Second operand 6 states and 331 transitions. [2023-11-22 17:06:19,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 207 transitions, 954 flow [2023-11-22 17:06:19,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 207 transitions, 936 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-22 17:06:19,630 INFO L231 Difference]: Finished difference. Result has 123 places, 118 transitions, 423 flow [2023-11-22 17:06:19,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=423, PETRI_PLACES=123, PETRI_TRANSITIONS=118} [2023-11-22 17:06:19,632 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -7 predicate places. [2023-11-22 17:06:19,632 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 118 transitions, 423 flow [2023-11-22 17:06:19,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 30.636363636363637) internal successors, (337), 11 states have internal predecessors, (337), 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) [2023-11-22 17:06:19,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:06:19,633 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:06:19,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 17:06:19,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 17:06:19,848 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-22 17:06:19,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:06:19,849 INFO L85 PathProgramCache]: Analyzing trace with hash 587917315, now seen corresponding path program 1 times [2023-11-22 17:06:19,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:06:19,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425179489] [2023-11-22 17:06:19,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:06:19,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:06:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-22 17:06:19,892 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-22 17:06:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-22 17:06:19,933 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-22 17:06:19,933 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-22 17:06:19,934 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (123 of 124 remaining) [2023-11-22 17:06:19,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (122 of 124 remaining) [2023-11-22 17:06:19,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (121 of 124 remaining) [2023-11-22 17:06:19,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (120 of 124 remaining) [2023-11-22 17:06:19,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (119 of 124 remaining) [2023-11-22 17:06:19,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (118 of 124 remaining) [2023-11-22 17:06:19,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (117 of 124 remaining) [2023-11-22 17:06:19,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (116 of 124 remaining) [2023-11-22 17:06:19,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (115 of 124 remaining) [2023-11-22 17:06:19,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 124 remaining) [2023-11-22 17:06:19,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 124 remaining) [2023-11-22 17:06:19,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 124 remaining) [2023-11-22 17:06:19,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (111 of 124 remaining) [2023-11-22 17:06:19,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (110 of 124 remaining) [2023-11-22 17:06:19,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 124 remaining) [2023-11-22 17:06:19,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 124 remaining) [2023-11-22 17:06:19,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 124 remaining) [2023-11-22 17:06:19,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (106 of 124 remaining) [2023-11-22 17:06:19,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 124 remaining) [2023-11-22 17:06:19,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 124 remaining) [2023-11-22 17:06:19,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 124 remaining) [2023-11-22 17:06:19,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 124 remaining) [2023-11-22 17:06:19,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (101 of 124 remaining) [2023-11-22 17:06:19,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 124 remaining) [2023-11-22 17:06:19,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 124 remaining) [2023-11-22 17:06:19,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 124 remaining) [2023-11-22 17:06:19,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32ASSERT_VIOLATIONMEMORY_LEAK (97 of 124 remaining) [2023-11-22 17:06:19,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 124 remaining) [2023-11-22 17:06:19,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 124 remaining) [2023-11-22 17:06:19,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 124 remaining) [2023-11-22 17:06:19,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 124 remaining) [2023-11-22 17:06:19,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 124 remaining) [2023-11-22 17:06:19,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 124 remaining) [2023-11-22 17:06:19,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 124 remaining) [2023-11-22 17:06:19,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 124 remaining) [2023-11-22 17:06:19,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 124 remaining) [2023-11-22 17:06:19,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 124 remaining) [2023-11-22 17:06:19,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 124 remaining) [2023-11-22 17:06:19,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 124 remaining) [2023-11-22 17:06:19,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 124 remaining) [2023-11-22 17:06:19,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 124 remaining) [2023-11-22 17:06:19,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 124 remaining) [2023-11-22 17:06:19,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 124 remaining) [2023-11-22 17:06:19,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 124 remaining) [2023-11-22 17:06:19,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 124 remaining) [2023-11-22 17:06:19,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 124 remaining) [2023-11-22 17:06:19,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 124 remaining) [2023-11-22 17:06:19,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 124 remaining) [2023-11-22 17:06:19,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 124 remaining) [2023-11-22 17:06:19,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 124 remaining) [2023-11-22 17:06:19,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 124 remaining) [2023-11-22 17:06:19,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 124 remaining) [2023-11-22 17:06:19,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 124 remaining) [2023-11-22 17:06:19,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 124 remaining) [2023-11-22 17:06:19,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 124 remaining) [2023-11-22 17:06:19,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 124 remaining) [2023-11-22 17:06:19,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 124 remaining) [2023-11-22 17:06:19,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 124 remaining) [2023-11-22 17:06:19,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 124 remaining) [2023-11-22 17:06:19,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 124 remaining) [2023-11-22 17:06:19,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 124 remaining) [2023-11-22 17:06:19,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 124 remaining) [2023-11-22 17:06:19,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 124 remaining) [2023-11-22 17:06:19,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 124 remaining) [2023-11-22 17:06:19,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 124 remaining) [2023-11-22 17:06:19,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 124 remaining) [2023-11-22 17:06:19,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 124 remaining) [2023-11-22 17:06:19,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 124 remaining) [2023-11-22 17:06:19,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 124 remaining) [2023-11-22 17:06:19,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 124 remaining) [2023-11-22 17:06:19,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 124 remaining) [2023-11-22 17:06:19,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 124 remaining) [2023-11-22 17:06:19,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 124 remaining) [2023-11-22 17:06:19,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 124 remaining) [2023-11-22 17:06:19,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 124 remaining) [2023-11-22 17:06:19,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 124 remaining) [2023-11-22 17:06:19,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 124 remaining) [2023-11-22 17:06:19,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 124 remaining) [2023-11-22 17:06:19,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 124 remaining) [2023-11-22 17:06:19,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 124 remaining) [2023-11-22 17:06:19,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 124 remaining) [2023-11-22 17:06:19,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32ASSERT_VIOLATIONMEMORY_LEAK (42 of 124 remaining) [2023-11-22 17:06:19,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 124 remaining) [2023-11-22 17:06:19,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 124 remaining) [2023-11-22 17:06:19,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 124 remaining) [2023-11-22 17:06:19,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 124 remaining) [2023-11-22 17:06:19,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 124 remaining) [2023-11-22 17:06:19,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 124 remaining) [2023-11-22 17:06:19,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 124 remaining) [2023-11-22 17:06:19,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 124 remaining) [2023-11-22 17:06:19,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 124 remaining) [2023-11-22 17:06:19,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 124 remaining) [2023-11-22 17:06:19,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 124 remaining) [2023-11-22 17:06:19,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 124 remaining) [2023-11-22 17:06:19,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 124 remaining) [2023-11-22 17:06:19,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 124 remaining) [2023-11-22 17:06:19,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 124 remaining) [2023-11-22 17:06:19,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 124 remaining) [2023-11-22 17:06:19,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 124 remaining) [2023-11-22 17:06:19,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 124 remaining) [2023-11-22 17:06:19,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 124 remaining) [2023-11-22 17:06:19,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 124 remaining) [2023-11-22 17:06:19,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 124 remaining) [2023-11-22 17:06:19,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 124 remaining) [2023-11-22 17:06:19,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 124 remaining) [2023-11-22 17:06:19,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 124 remaining) [2023-11-22 17:06:19,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 124 remaining) [2023-11-22 17:06:19,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 124 remaining) [2023-11-22 17:06:19,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 124 remaining) [2023-11-22 17:06:19,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 124 remaining) [2023-11-22 17:06:19,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 124 remaining) [2023-11-22 17:06:19,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 124 remaining) [2023-11-22 17:06:19,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 124 remaining) [2023-11-22 17:06:19,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 124 remaining) [2023-11-22 17:06:19,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 124 remaining) [2023-11-22 17:06:19,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 124 remaining) [2023-11-22 17:06:19,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 124 remaining) [2023-11-22 17:06:19,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 124 remaining) [2023-11-22 17:06:19,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 124 remaining) [2023-11-22 17:06:19,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 124 remaining) [2023-11-22 17:06:19,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 124 remaining) [2023-11-22 17:06:19,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 124 remaining) [2023-11-22 17:06:19,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 124 remaining) [2023-11-22 17:06:19,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 124 remaining) [2023-11-22 17:06:19,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-22 17:06:19,951 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:06:19,953 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-22 17:06:19,953 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-22 17:06:20,049 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-22 17:06:20,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 248 transitions, 512 flow [2023-11-22 17:06:20,110 INFO L124 PetriNetUnfolderBase]: 28/284 cut-off events. [2023-11-22 17:06:20,110 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-22 17:06:20,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 284 events. 28/284 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1556 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 233. Up to 6 conditions per place. [2023-11-22 17:06:20,113 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 248 transitions, 512 flow [2023-11-22 17:06:20,121 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 248 transitions, 512 flow [2023-11-22 17:06:20,122 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 17:06:20,123 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=All, 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;@71d72d5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 17:06:20,123 INFO L358 AbstractCegarLoop]: Starting to check reachability of 179 error locations. [2023-11-22 17:06:20,124 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-22 17:06:20,124 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-22 17:06:20,125 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-22 17:06:20,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:06:20,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-22 17:06:20,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 176 more)] === [2023-11-22 17:06:20,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:06:20,125 INFO L85 PathProgramCache]: Analyzing trace with hash 37971, now seen corresponding path program 1 times [2023-11-22 17:06:20,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:06:20,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415156621] [2023-11-22 17:06:20,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:06:20,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:06:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:06:20,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:06:20,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:06:20,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415156621] [2023-11-22 17:06:20,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415156621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:06:20,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:06:20,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-22 17:06:20,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548989149] [2023-11-22 17:06:20,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:06:20,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 17:06:20,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:06:20,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 17:06:20,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 17:06:20,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 248 [2023-11-22 17:06:20,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 248 transitions, 512 flow. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2023-11-22 17:06:20,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:06:20,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 248 [2023-11-22 17:06:20,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:06:24,504 INFO L124 PetriNetUnfolderBase]: 32410/52397 cut-off events. [2023-11-22 17:06:24,505 INFO L125 PetriNetUnfolderBase]: For 440/440 co-relation queries the response was YES. [2023-11-22 17:06:24,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100989 conditions, 52397 events. 32410/52397 cut-off events. For 440/440 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 392800 event pairs, 29064 based on Foata normal form. 1228/34054 useless extension candidates. Maximal degree in co-relation 99020. Up to 48332 conditions per place. [2023-11-22 17:06:24,973 INFO L140 encePairwiseOnDemand]: 187/248 looper letters, 134 selfloop transitions, 2 changer transitions 0/187 dead transitions. [2023-11-22 17:06:24,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 187 transitions, 662 flow [2023-11-22 17:06:24,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 17:06:24,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-22 17:06:24,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2023-11-22 17:06:24,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2023-11-22 17:06:24,976 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2023-11-22 17:06:24,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2023-11-22 17:06:24,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:06:24,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2023-11-22 17:06:24,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2023-11-22 17:06:24,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 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) [2023-11-22 17:06:24,979 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 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) [2023-11-22 17:06:24,979 INFO L175 Difference]: Start difference. First operand has 226 places, 248 transitions, 512 flow. Second operand 3 states and 348 transitions. [2023-11-22 17:06:24,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 187 transitions, 662 flow [2023-11-22 17:06:24,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 187 transitions, 662 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-22 17:06:24,984 INFO L231 Difference]: Finished difference. Result has 177 places, 187 transitions, 394 flow [2023-11-22 17:06:24,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=394, PETRI_PLACES=177, PETRI_TRANSITIONS=187} [2023-11-22 17:06:24,986 INFO L281 CegarLoopForPetriNet]: 226 programPoint places, -49 predicate places. [2023-11-22 17:06:24,986 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 187 transitions, 394 flow [2023-11-22 17:06:24,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2023-11-22 17:06:24,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:06:24,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-22 17:06:24,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-22 17:06:24,987 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 176 more)] === [2023-11-22 17:06:24,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:06:24,987 INFO L85 PathProgramCache]: Analyzing trace with hash 37972, now seen corresponding path program 1 times [2023-11-22 17:06:24,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:06:24,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054582351] [2023-11-22 17:06:24,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:06:24,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:06:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:06:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:06:25,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:06:25,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054582351] [2023-11-22 17:06:25,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054582351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:06:25,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:06:25,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-22 17:06:25,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765802267] [2023-11-22 17:06:25,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:06:25,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 17:06:25,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:06:25,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 17:06:25,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 17:06:25,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 248 [2023-11-22 17:06:25,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 187 transitions, 394 flow. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2023-11-22 17:06:25,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:06:25,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 248 [2023-11-22 17:06:25,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:06:28,760 INFO L124 PetriNetUnfolderBase]: 32410/52396 cut-off events. [2023-11-22 17:06:28,768 INFO L125 PetriNetUnfolderBase]: For 440/440 co-relation queries the response was YES. [2023-11-22 17:06:28,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100990 conditions, 52396 events. 32410/52396 cut-off events. For 440/440 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 392676 event pairs, 29064 based on Foata normal form. 0/32826 useless extension candidates. Maximal degree in co-relation 100977. Up to 48332 conditions per place. [2023-11-22 17:06:29,064 INFO L140 encePairwiseOnDemand]: 245/248 looper letters, 133 selfloop transitions, 2 changer transitions 0/186 dead transitions. [2023-11-22 17:06:29,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 186 transitions, 662 flow [2023-11-22 17:06:29,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 17:06:29,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-22 17:06:29,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2023-11-22 17:06:29,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38844086021505375 [2023-11-22 17:06:29,066 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2023-11-22 17:06:29,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2023-11-22 17:06:29,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:06:29,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2023-11-22 17:06:29,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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) [2023-11-22 17:06:29,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 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) [2023-11-22 17:06:29,069 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 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) [2023-11-22 17:06:29,069 INFO L175 Difference]: Start difference. First operand has 177 places, 187 transitions, 394 flow. Second operand 3 states and 289 transitions. [2023-11-22 17:06:29,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 186 transitions, 662 flow [2023-11-22 17:06:29,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 186 transitions, 658 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-22 17:06:29,073 INFO L231 Difference]: Finished difference. Result has 176 places, 186 transitions, 392 flow [2023-11-22 17:06:29,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=392, PETRI_PLACES=176, PETRI_TRANSITIONS=186} [2023-11-22 17:06:29,074 INFO L281 CegarLoopForPetriNet]: 226 programPoint places, -50 predicate places. [2023-11-22 17:06:29,074 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 186 transitions, 392 flow [2023-11-22 17:06:29,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2023-11-22 17:06:29,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:06:29,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-22 17:06:29,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-22 17:06:29,075 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 176 more)] === [2023-11-22 17:06:29,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:06:29,075 INFO L85 PathProgramCache]: Analyzing trace with hash 36529123, now seen corresponding path program 1 times [2023-11-22 17:06:29,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:06:29,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856539371] [2023-11-22 17:06:29,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:06:29,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:06:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:06:29,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:06:29,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:06:29,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856539371] [2023-11-22 17:06:29,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856539371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:06:29,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:06:29,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 17:06:29,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520701516] [2023-11-22 17:06:29,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:06:29,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 17:06:29,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:06:29,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 17:06:29,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 17:06:29,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 248 [2023-11-22 17:06:29,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 186 transitions, 392 flow. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 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) [2023-11-22 17:06:29,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:06:29,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 248 [2023-11-22 17:06:29,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:06:36,104 INFO L124 PetriNetUnfolderBase]: 64969/106030 cut-off events. [2023-11-22 17:06:36,104 INFO L125 PetriNetUnfolderBase]: For 780/780 co-relation queries the response was YES. [2023-11-22 17:06:36,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202585 conditions, 106030 events. 64969/106030 cut-off events. For 780/780 co-relation queries the response was YES. Maximal size of possible extension queue 1845. Compared 863285 event pairs, 30791 based on Foata normal form. 0/67800 useless extension candidates. Maximal degree in co-relation 202572. Up to 50928 conditions per place. [2023-11-22 17:06:36,852 INFO L140 encePairwiseOnDemand]: 225/248 looper letters, 245 selfloop transitions, 16 changer transitions 0/304 dead transitions. [2023-11-22 17:06:36,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 304 transitions, 1161 flow [2023-11-22 17:06:36,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 17:06:36,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-22 17:06:36,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 440 transitions. [2023-11-22 17:06:36,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435483870967742 [2023-11-22 17:06:36,855 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 440 transitions. [2023-11-22 17:06:36,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 440 transitions. [2023-11-22 17:06:36,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:06:36,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 440 transitions. [2023-11-22 17:06:36,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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) [2023-11-22 17:06:36,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 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) [2023-11-22 17:06:36,861 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 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) [2023-11-22 17:06:36,861 INFO L175 Difference]: Start difference. First operand has 176 places, 186 transitions, 392 flow. Second operand 4 states and 440 transitions. [2023-11-22 17:06:36,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 304 transitions, 1161 flow [2023-11-22 17:06:36,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 304 transitions, 1157 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-22 17:06:36,866 INFO L231 Difference]: Finished difference. Result has 176 places, 193 transitions, 488 flow [2023-11-22 17:06:36,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=488, PETRI_PLACES=176, PETRI_TRANSITIONS=193} [2023-11-22 17:06:36,867 INFO L281 CegarLoopForPetriNet]: 226 programPoint places, -50 predicate places. [2023-11-22 17:06:36,867 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 193 transitions, 488 flow [2023-11-22 17:06:36,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 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) [2023-11-22 17:06:36,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:06:36,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-22 17:06:36,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-22 17:06:36,868 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 176 more)] === [2023-11-22 17:06:36,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:06:36,868 INFO L85 PathProgramCache]: Analyzing trace with hash 36529124, now seen corresponding path program 1 times [2023-11-22 17:06:36,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:06:36,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090762262] [2023-11-22 17:06:36,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:06:36,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:06:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:06:36,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:06:36,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:06:36,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090762262] [2023-11-22 17:06:36,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090762262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:06:36,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:06:36,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 17:06:36,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158030876] [2023-11-22 17:06:36,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:06:36,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 17:06:36,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:06:36,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 17:06:36,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 17:06:37,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 248 [2023-11-22 17:06:37,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 193 transitions, 488 flow. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-22 17:06:37,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:06:37,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 248 [2023-11-22 17:06:37,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:06:43,901 INFO L124 PetriNetUnfolderBase]: 62710/104169 cut-off events. [2023-11-22 17:06:43,902 INFO L125 PetriNetUnfolderBase]: For 5166/5166 co-relation queries the response was YES. [2023-11-22 17:06:44,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205668 conditions, 104169 events. 62710/104169 cut-off events. For 5166/5166 co-relation queries the response was YES. Maximal size of possible extension queue 1983. Compared 881755 event pairs, 18666 based on Foata normal form. 0/66805 useless extension candidates. Maximal degree in co-relation 201883. Up to 87644 conditions per place. [2023-11-22 17:06:44,590 INFO L140 encePairwiseOnDemand]: 240/248 looper letters, 175 selfloop transitions, 7 changer transitions 0/237 dead transitions. [2023-11-22 17:06:44,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 237 transitions, 951 flow [2023-11-22 17:06:44,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 17:06:44,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-22 17:06:44,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 381 transitions. [2023-11-22 17:06:44,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3840725806451613 [2023-11-22 17:06:44,592 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 381 transitions. [2023-11-22 17:06:44,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 381 transitions. [2023-11-22 17:06:44,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:06:44,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 381 transitions. [2023-11-22 17:06:44,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 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) [2023-11-22 17:06:44,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 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) [2023-11-22 17:06:44,595 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 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) [2023-11-22 17:06:44,595 INFO L175 Difference]: Start difference. First operand has 176 places, 193 transitions, 488 flow. Second operand 4 states and 381 transitions. [2023-11-22 17:06:44,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 237 transitions, 951 flow [2023-11-22 17:06:44,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 237 transitions, 945 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-22 17:06:44,605 INFO L231 Difference]: Finished difference. Result has 178 places, 196 transitions, 517 flow [2023-11-22 17:06:44,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=517, PETRI_PLACES=178, PETRI_TRANSITIONS=196} [2023-11-22 17:06:44,606 INFO L281 CegarLoopForPetriNet]: 226 programPoint places, -48 predicate places. [2023-11-22 17:06:44,610 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 196 transitions, 517 flow [2023-11-22 17:06:44,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-22 17:06:44,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:06:44,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:06:44,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-22 17:06:44,611 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 176 more)] === [2023-11-22 17:06:44,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:06:44,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1613642674, now seen corresponding path program 1 times [2023-11-22 17:06:44,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:06:44,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653166482] [2023-11-22 17:06:44,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:06:44,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:06:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:06:44,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:06:44,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:06:44,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653166482] [2023-11-22 17:06:44,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653166482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:06:44,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:06:44,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 17:06:44,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761392849] [2023-11-22 17:06:44,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:06:44,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 17:06:44,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:06:44,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 17:06:44,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 17:06:44,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 248 [2023-11-22 17:06:44,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 196 transitions, 517 flow. Second operand has 5 states, 5 states have (on average 52.4) internal successors, (262), 5 states have internal predecessors, (262), 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) [2023-11-22 17:06:44,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:06:44,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 248 [2023-11-22 17:06:44,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:06:51,942 INFO L124 PetriNetUnfolderBase]: 62711/104176 cut-off events. [2023-11-22 17:06:51,942 INFO L125 PetriNetUnfolderBase]: For 6795/6795 co-relation queries the response was YES. [2023-11-22 17:06:52,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208667 conditions, 104176 events. 62711/104176 cut-off events. For 6795/6795 co-relation queries the response was YES. Maximal size of possible extension queue 1983. Compared 882032 event pairs, 18666 based on Foata normal form. 0/66810 useless extension candidates. Maximal degree in co-relation 204815. Up to 87644 conditions per place.