./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/queue_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/pthread/queue_longer.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 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 15:57:29,383 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 15:57:29,441 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-12 15:57:29,448 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 15:57:29,448 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 15:57:29,470 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 15:57:29,471 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 15:57:29,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 15:57:29,471 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 15:57:29,472 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 15:57:29,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 15:57:29,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 15:57:29,473 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 15:57:29,473 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 15:57:29,475 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 15:57:29,475 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 15:57:29,476 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 15:57:29,476 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 15:57:29,478 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 15:57:29,479 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 15:57:29,479 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 15:57:29,483 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 15:57:29,483 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 15:57:29,483 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 15:57:29,484 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 15:57:29,484 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 15:57:29,484 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 15:57:29,484 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 15:57:29,484 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 15:57:29,484 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 15:57:29,485 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 15:57:29,485 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 15:57:29,485 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 15:57:29,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 15:57:29,485 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 15:57:29,485 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 15:57:29,485 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 15:57:29,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 15:57:29,486 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 15:57:29,486 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 15:57:29,486 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 15:57:29,487 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 15:57:29,487 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 [2024-11-12 15:57:29,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 15:57:29,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 15:57:29,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 15:57:29,732 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 15:57:29,732 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 15:57:29,733 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_longer.i [2024-11-12 15:57:31,136 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 15:57:31,329 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 15:57:31,330 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_longer.i [2024-11-12 15:57:31,349 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5ee2ae0f/871bc97af6424c12bccea60a59754796/FLAG7b8b7bc8a [2024-11-12 15:57:31,362 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5ee2ae0f/871bc97af6424c12bccea60a59754796 [2024-11-12 15:57:31,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 15:57:31,365 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 15:57:31,366 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 15:57:31,366 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 15:57:31,372 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 15:57:31,373 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 03:57:31" (1/1) ... [2024-11-12 15:57:31,374 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59d272b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:57:31, skipping insertion in model container [2024-11-12 15:57:31,374 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 03:57:31" (1/1) ... [2024-11-12 15:57:31,416 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 15:57:31,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 15:57:31,869 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 15:57:31,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 15:57:32,008 INFO L204 MainTranslator]: Completed translation [2024-11-12 15:57:32,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:57:32 WrapperNode [2024-11-12 15:57:32,008 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 15:57:32,009 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 15:57:32,010 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 15:57:32,010 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 15:57:32,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:57:32" (1/1) ... [2024-11-12 15:57:32,054 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:57:32" (1/1) ... [2024-11-12 15:57:32,116 INFO L138 Inliner]: procedures = 274, calls = 859, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 1046 [2024-11-12 15:57:32,117 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 15:57:32,118 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 15:57:32,118 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 15:57:32,118 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 15:57:32,127 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:57:32" (1/1) ... [2024-11-12 15:57:32,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:57:32" (1/1) ... [2024-11-12 15:57:32,144 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:57:32" (1/1) ... [2024-11-12 15:57:32,197 INFO L175 MemorySlicer]: Split 844 memory accesses to 4 slices as follows [2, 5, 403, 434]. 51 percent of accesses are in the largest equivalence class. The 810 initializations are split as follows [2, 5, 400, 403]. The 16 writes are split as follows [0, 0, 2, 14]. [2024-11-12 15:57:32,204 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:57:32" (1/1) ... [2024-11-12 15:57:32,204 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:57:32" (1/1) ... [2024-11-12 15:57:32,250 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:57:32" (1/1) ... [2024-11-12 15:57:32,258 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:57:32" (1/1) ... [2024-11-12 15:57:32,265 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:57:32" (1/1) ... [2024-11-12 15:57:32,282 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:57:32" (1/1) ... [2024-11-12 15:57:32,293 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 15:57:32,298 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 15:57:32,298 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 15:57:32,298 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 15:57:32,299 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:57:32" (1/1) ... [2024-11-12 15:57:32,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 15:57:32,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:57:32,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 15:57:32,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 15:57:32,401 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-12 15:57:32,402 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-12 15:57:32,402 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-12 15:57:32,402 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-12 15:57:32,402 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-12 15:57:32,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 15:57:32,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 15:57:32,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 15:57:32,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-12 15:57:32,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 15:57:32,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 15:57:32,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 15:57:32,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-12 15:57:32,405 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-12 15:57:32,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 15:57:32,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 15:57:32,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 15:57:32,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 15:57:32,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-12 15:57:32,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 15:57:32,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 15:57:32,407 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 15:57:32,540 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 15:57:32,542 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 15:57:33,536 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 15:57:33,536 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 15:57:38,623 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 15:57:38,624 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 15:57:38,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 03:57:38 BoogieIcfgContainer [2024-11-12 15:57:38,624 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 15:57:38,626 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 15:57:38,626 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 15:57:38,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 15:57:38,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 03:57:31" (1/3) ... [2024-11-12 15:57:38,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e84d983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 03:57:38, skipping insertion in model container [2024-11-12 15:57:38,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:57:32" (2/3) ... [2024-11-12 15:57:38,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e84d983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 03:57:38, skipping insertion in model container [2024-11-12 15:57:38,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 03:57:38" (3/3) ... [2024-11-12 15:57:38,630 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2024-11-12 15:57:38,644 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 15:57:38,645 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 72 error locations. [2024-11-12 15:57:38,645 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 15:57:38,748 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 15:57:38,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 172 transitions, 358 flow [2024-11-12 15:57:39,191 INFO L124 PetriNetUnfolderBase]: 14/170 cut-off events. [2024-11-12 15:57:39,191 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 15:57:39,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 170 events. 14/170 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 524 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2024-11-12 15:57:39,196 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 172 transitions, 358 flow [2024-11-12 15:57:39,202 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 169 transitions, 350 flow [2024-11-12 15:57:39,212 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 15:57:39,218 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@3d637551, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 15:57:39,219 INFO L334 AbstractCegarLoop]: Starting to check reachability of 134 error locations. [2024-11-12 15:57:39,248 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 15:57:39,248 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-12 15:57:39,248 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 15:57:39,248 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:57:39,249 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-12 15:57:39,250 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:57:39,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:57:39,255 INFO L85 PathProgramCache]: Analyzing trace with hash 73258, now seen corresponding path program 1 times [2024-11-12 15:57:39,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:57:39,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624876804] [2024-11-12 15:57:39,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:57:39,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:57:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:57:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:57:39,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:57:39,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624876804] [2024-11-12 15:57:39,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624876804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:57:39,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:57:39,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 15:57:39,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040293531] [2024-11-12 15:57:39,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:57:39,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 15:57:39,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:57:40,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 15:57:40,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 15:57:40,162 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 172 [2024-11-12 15:57:40,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 169 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:40,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:57:40,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 172 [2024-11-12 15:57:40,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:57:40,726 INFO L124 PetriNetUnfolderBase]: 1744/4653 cut-off events. [2024-11-12 15:57:40,726 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-12 15:57:40,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7479 conditions, 4653 events. 1744/4653 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 37036 event pairs, 1393 based on Foata normal form. 182/3587 useless extension candidates. Maximal degree in co-relation 7362. Up to 2745 conditions per place. [2024-11-12 15:57:40,759 INFO L140 encePairwiseOnDemand]: 162/172 looper letters, 58 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2024-11-12 15:57:40,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 154 transitions, 440 flow [2024-11-12 15:57:40,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 15:57:40,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 15:57:40,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2024-11-12 15:57:40,770 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7015503875968992 [2024-11-12 15:57:40,771 INFO L175 Difference]: Start difference. First operand has 162 places, 169 transitions, 350 flow. Second operand 3 states and 362 transitions. [2024-11-12 15:57:40,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 154 transitions, 440 flow [2024-11-12 15:57:40,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 154 transitions, 432 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 15:57:40,778 INFO L231 Difference]: Finished difference. Result has 151 places, 154 transitions, 316 flow [2024-11-12 15:57:40,780 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=151, PETRI_TRANSITIONS=154} [2024-11-12 15:57:40,782 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -11 predicate places. [2024-11-12 15:57:40,782 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 154 transitions, 316 flow [2024-11-12 15:57:40,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:40,783 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:57:40,783 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-12 15:57:40,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 15:57:40,784 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:57:40,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:57:40,784 INFO L85 PathProgramCache]: Analyzing trace with hash 73259, now seen corresponding path program 1 times [2024-11-12 15:57:40,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:57:40,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101684723] [2024-11-12 15:57:40,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:57:40,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:57:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:57:41,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:57:41,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:57:41,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101684723] [2024-11-12 15:57:41,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101684723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:57:41,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:57:41,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 15:57:41,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758266026] [2024-11-12 15:57:41,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:57:41,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 15:57:41,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:57:41,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 15:57:41,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 15:57:41,229 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 172 [2024-11-12 15:57:41,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 154 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:41,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:57:41,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 172 [2024-11-12 15:57:41,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:57:41,562 INFO L124 PetriNetUnfolderBase]: 1744/4650 cut-off events. [2024-11-12 15:57:41,562 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-12 15:57:41,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7430 conditions, 4650 events. 1744/4650 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 37031 event pairs, 1393 based on Foata normal form. 3/3407 useless extension candidates. Maximal degree in co-relation 7419. Up to 2745 conditions per place. [2024-11-12 15:57:41,585 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 58 selfloop transitions, 2 changer transitions 0/151 dead transitions. [2024-11-12 15:57:41,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 151 transitions, 430 flow [2024-11-12 15:57:41,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 15:57:41,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 15:57:41,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2024-11-12 15:57:41,592 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6918604651162791 [2024-11-12 15:57:41,593 INFO L175 Difference]: Start difference. First operand has 151 places, 154 transitions, 316 flow. Second operand 3 states and 357 transitions. [2024-11-12 15:57:41,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 151 transitions, 430 flow [2024-11-12 15:57:41,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 151 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 15:57:41,642 INFO L231 Difference]: Finished difference. Result has 148 places, 151 transitions, 310 flow [2024-11-12 15:57:41,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=148, PETRI_TRANSITIONS=151} [2024-11-12 15:57:41,642 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -14 predicate places. [2024-11-12 15:57:41,643 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 151 transitions, 310 flow [2024-11-12 15:57:41,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:41,643 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:57:41,643 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-12 15:57:41,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 15:57:41,643 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:57:41,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:57:41,644 INFO L85 PathProgramCache]: Analyzing trace with hash -2110278690, now seen corresponding path program 1 times [2024-11-12 15:57:41,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:57:41,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662439618] [2024-11-12 15:57:41,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:57:41,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:57:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:57:41,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:57:41,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:57:41,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662439618] [2024-11-12 15:57:41,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662439618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:57:41,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:57:41,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 15:57:41,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624323927] [2024-11-12 15:57:41,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:57:41,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 15:57:41,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:57:41,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 15:57:41,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 15:57:41,970 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-12 15:57:41,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 151 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:41,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:57:41,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-12 15:57:41,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:57:42,352 INFO L124 PetriNetUnfolderBase]: 1744/4648 cut-off events. [2024-11-12 15:57:42,353 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-12 15:57:42,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7428 conditions, 4648 events. 1744/4648 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 36988 event pairs, 1393 based on Foata normal form. 1/3405 useless extension candidates. Maximal degree in co-relation 7417. Up to 2744 conditions per place. [2024-11-12 15:57:42,369 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 57 selfloop transitions, 3 changer transitions 0/149 dead transitions. [2024-11-12 15:57:42,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 149 transitions, 426 flow [2024-11-12 15:57:42,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 15:57:42,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 15:57:42,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 458 transitions. [2024-11-12 15:57:42,370 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6656976744186046 [2024-11-12 15:57:42,371 INFO L175 Difference]: Start difference. First operand has 148 places, 151 transitions, 310 flow. Second operand 4 states and 458 transitions. [2024-11-12 15:57:42,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 149 transitions, 426 flow [2024-11-12 15:57:42,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 149 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 15:57:42,373 INFO L231 Difference]: Finished difference. Result has 147 places, 149 transitions, 308 flow [2024-11-12 15:57:42,373 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=147, PETRI_TRANSITIONS=149} [2024-11-12 15:57:42,374 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -15 predicate places. [2024-11-12 15:57:42,374 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 149 transitions, 308 flow [2024-11-12 15:57:42,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:42,374 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:57:42,374 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-12 15:57:42,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 15:57:42,375 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:57:42,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:57:42,375 INFO L85 PathProgramCache]: Analyzing trace with hash -2110278689, now seen corresponding path program 1 times [2024-11-12 15:57:42,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:57:42,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969407071] [2024-11-12 15:57:42,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:57:42,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:57:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:57:42,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:57:42,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:57:42,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969407071] [2024-11-12 15:57:42,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969407071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:57:42,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:57:42,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 15:57:42,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563141142] [2024-11-12 15:57:42,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:57:42,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 15:57:42,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:57:42,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 15:57:42,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 15:57:42,719 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-12 15:57:42,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 149 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:42,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:57:42,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-12 15:57:42,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:57:43,176 INFO L124 PetriNetUnfolderBase]: 1744/4646 cut-off events. [2024-11-12 15:57:43,177 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-12 15:57:43,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7427 conditions, 4646 events. 1744/4646 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 36986 event pairs, 1393 based on Foata normal form. 2/3405 useless extension candidates. Maximal degree in co-relation 7412. Up to 2744 conditions per place. [2024-11-12 15:57:43,195 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 57 selfloop transitions, 3 changer transitions 0/147 dead transitions. [2024-11-12 15:57:43,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 147 transitions, 424 flow [2024-11-12 15:57:43,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 15:57:43,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 15:57:43,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 458 transitions. [2024-11-12 15:57:43,197 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6656976744186046 [2024-11-12 15:57:43,197 INFO L175 Difference]: Start difference. First operand has 147 places, 149 transitions, 308 flow. Second operand 4 states and 458 transitions. [2024-11-12 15:57:43,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 147 transitions, 424 flow [2024-11-12 15:57:43,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 147 transitions, 418 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 15:57:43,201 INFO L231 Difference]: Finished difference. Result has 145 places, 147 transitions, 304 flow [2024-11-12 15:57:43,201 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=145, PETRI_TRANSITIONS=147} [2024-11-12 15:57:43,202 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -17 predicate places. [2024-11-12 15:57:43,202 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 147 transitions, 304 flow [2024-11-12 15:57:43,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:43,203 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:57:43,203 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:57:43,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 15:57:43,203 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:57:43,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:57:43,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1491928031, now seen corresponding path program 1 times [2024-11-12 15:57:43,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:57:43,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554399203] [2024-11-12 15:57:43,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:57:43,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:57:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:57:43,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:57:43,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:57:43,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554399203] [2024-11-12 15:57:43,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554399203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:57:43,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:57:43,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 15:57:43,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907715660] [2024-11-12 15:57:43,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:57:43,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 15:57:43,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:57:43,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 15:57:43,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 15:57:43,554 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 172 [2024-11-12 15:57:43,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 147 transitions, 304 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:43,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:57:43,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 172 [2024-11-12 15:57:43,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:57:43,929 INFO L124 PetriNetUnfolderBase]: 1703/4145 cut-off events. [2024-11-12 15:57:43,929 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-12 15:57:43,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6882 conditions, 4145 events. 1703/4145 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 30733 event pairs, 702 based on Foata normal form. 204/3609 useless extension candidates. Maximal degree in co-relation 6867. Up to 1414 conditions per place. [2024-11-12 15:57:43,942 INFO L140 encePairwiseOnDemand]: 151/172 looper letters, 74 selfloop transitions, 5 changer transitions 0/150 dead transitions. [2024-11-12 15:57:43,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 150 transitions, 469 flow [2024-11-12 15:57:43,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 15:57:43,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 15:57:43,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 435 transitions. [2024-11-12 15:57:43,944 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6322674418604651 [2024-11-12 15:57:43,944 INFO L175 Difference]: Start difference. First operand has 145 places, 147 transitions, 304 flow. Second operand 4 states and 435 transitions. [2024-11-12 15:57:43,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 150 transitions, 469 flow [2024-11-12 15:57:43,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 150 transitions, 463 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 15:57:43,946 INFO L231 Difference]: Finished difference. Result has 129 places, 131 transitions, 276 flow [2024-11-12 15:57:43,946 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=129, PETRI_TRANSITIONS=131} [2024-11-12 15:57:43,947 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -33 predicate places. [2024-11-12 15:57:43,947 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 131 transitions, 276 flow [2024-11-12 15:57:43,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:43,950 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:57:43,951 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:57:43,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 15:57:43,951 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:57:43,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:57:43,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1491928032, now seen corresponding path program 1 times [2024-11-12 15:57:43,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:57:43,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325152799] [2024-11-12 15:57:43,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:57:43,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:57:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:57:44,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:57:44,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:57:44,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325152799] [2024-11-12 15:57:44,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325152799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:57:44,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:57:44,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 15:57:44,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934492610] [2024-11-12 15:57:44,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:57:44,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 15:57:44,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:57:44,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 15:57:44,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 15:57:44,303 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 172 [2024-11-12 15:57:44,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 131 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:44,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:57:44,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 172 [2024-11-12 15:57:44,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:57:44,596 INFO L124 PetriNetUnfolderBase]: 1703/3676 cut-off events. [2024-11-12 15:57:44,596 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-11-12 15:57:44,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6547 conditions, 3676 events. 1703/3676 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 24522 event pairs, 702 based on Foata normal form. 204/3341 useless extension candidates. Maximal degree in co-relation 2518. Up to 1414 conditions per place. [2024-11-12 15:57:44,612 INFO L140 encePairwiseOnDemand]: 153/172 looper letters, 74 selfloop transitions, 5 changer transitions 0/136 dead transitions. [2024-11-12 15:57:44,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 136 transitions, 445 flow [2024-11-12 15:57:44,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 15:57:44,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 15:57:44,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 441 transitions. [2024-11-12 15:57:44,614 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6409883720930233 [2024-11-12 15:57:44,614 INFO L175 Difference]: Start difference. First operand has 129 places, 131 transitions, 276 flow. Second operand 4 states and 441 transitions. [2024-11-12 15:57:44,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 136 transitions, 445 flow [2024-11-12 15:57:44,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 136 transitions, 435 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 15:57:44,617 INFO L231 Difference]: Finished difference. Result has 115 places, 117 transitions, 248 flow [2024-11-12 15:57:44,617 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=115, PETRI_TRANSITIONS=117} [2024-11-12 15:57:44,618 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -47 predicate places. [2024-11-12 15:57:44,618 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 117 transitions, 248 flow [2024-11-12 15:57:44,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:44,618 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:57:44,619 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:57:44,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 15:57:44,619 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:57:44,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:57:44,620 INFO L85 PathProgramCache]: Analyzing trace with hash -994868919, now seen corresponding path program 1 times [2024-11-12 15:57:44,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:57:44,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364660204] [2024-11-12 15:57:44,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:57:44,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:57:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:57:45,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:57:45,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:57:45,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364660204] [2024-11-12 15:57:45,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364660204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:57:45,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:57:45,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 15:57:45,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196431617] [2024-11-12 15:57:45,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:57:45,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 15:57:45,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:57:45,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 15:57:45,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-12 15:57:46,016 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 172 [2024-11-12 15:57:46,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 117 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:46,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:57:46,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 172 [2024-11-12 15:57:46,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:57:46,732 INFO L124 PetriNetUnfolderBase]: 2502/5392 cut-off events. [2024-11-12 15:57:46,733 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2024-11-12 15:57:46,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9549 conditions, 5392 events. 2502/5392 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 38771 event pairs, 536 based on Foata normal form. 0/4394 useless extension candidates. Maximal degree in co-relation 3717. Up to 3436 conditions per place. [2024-11-12 15:57:46,757 INFO L140 encePairwiseOnDemand]: 163/172 looper letters, 125 selfloop transitions, 11 changer transitions 0/184 dead transitions. [2024-11-12 15:57:46,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 184 transitions, 659 flow [2024-11-12 15:57:46,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 15:57:46,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 15:57:46,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 663 transitions. [2024-11-12 15:57:46,759 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5506644518272426 [2024-11-12 15:57:46,760 INFO L175 Difference]: Start difference. First operand has 115 places, 117 transitions, 248 flow. Second operand 7 states and 663 transitions. [2024-11-12 15:57:46,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 184 transitions, 659 flow [2024-11-12 15:57:46,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 184 transitions, 647 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 15:57:46,770 INFO L231 Difference]: Finished difference. Result has 122 places, 127 transitions, 312 flow [2024-11-12 15:57:46,770 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=312, PETRI_PLACES=122, PETRI_TRANSITIONS=127} [2024-11-12 15:57:46,770 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -40 predicate places. [2024-11-12 15:57:46,771 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 127 transitions, 312 flow [2024-11-12 15:57:46,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:46,771 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:57:46,771 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:57:46,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 15:57:46,772 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:57:46,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:57:46,772 INFO L85 PathProgramCache]: Analyzing trace with hash 739158375, now seen corresponding path program 1 times [2024-11-12 15:57:46,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:57:46,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593692335] [2024-11-12 15:57:46,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:57:46,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:57:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:57:46,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:57:46,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:57:46,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593692335] [2024-11-12 15:57:46,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593692335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:57:46,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:57:46,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 15:57:46,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794836674] [2024-11-12 15:57:46,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:57:46,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 15:57:46,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:57:46,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 15:57:46,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 15:57:47,126 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2024-11-12 15:57:47,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 127 transitions, 312 flow. Second operand has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:47,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:57:47,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2024-11-12 15:57:47,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:57:47,628 INFO L124 PetriNetUnfolderBase]: 2073/4641 cut-off events. [2024-11-12 15:57:47,628 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2024-11-12 15:57:47,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8317 conditions, 4641 events. 2073/4641 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 33387 event pairs, 892 based on Foata normal form. 375/4320 useless extension candidates. Maximal degree in co-relation 8044. Up to 1823 conditions per place. [2024-11-12 15:57:47,651 INFO L140 encePairwiseOnDemand]: 161/172 looper letters, 104 selfloop transitions, 3 changer transitions 0/158 dead transitions. [2024-11-12 15:57:47,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 158 transitions, 609 flow [2024-11-12 15:57:47,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 15:57:47,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 15:57:47,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 475 transitions. [2024-11-12 15:57:47,653 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.690406976744186 [2024-11-12 15:57:47,653 INFO L175 Difference]: Start difference. First operand has 122 places, 127 transitions, 312 flow. Second operand 4 states and 475 transitions. [2024-11-12 15:57:47,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 158 transitions, 609 flow [2024-11-12 15:57:47,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 158 transitions, 607 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 15:57:47,656 INFO L231 Difference]: Finished difference. Result has 116 places, 119 transitions, 300 flow [2024-11-12 15:57:47,656 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=300, PETRI_PLACES=116, PETRI_TRANSITIONS=119} [2024-11-12 15:57:47,657 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -46 predicate places. [2024-11-12 15:57:47,657 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 119 transitions, 300 flow [2024-11-12 15:57:47,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:47,658 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:57:47,658 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:57:47,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 15:57:47,658 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:57:47,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:57:47,659 INFO L85 PathProgramCache]: Analyzing trace with hash 739158376, now seen corresponding path program 1 times [2024-11-12 15:57:47,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:57:47,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211575521] [2024-11-12 15:57:47,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:57:47,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:57:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:57:47,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:57:47,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:57:47,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211575521] [2024-11-12 15:57:47,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211575521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:57:47,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:57:47,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 15:57:47,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899497073] [2024-11-12 15:57:47,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:57:47,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 15:57:47,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:57:47,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 15:57:47,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 15:57:47,849 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-11-12 15:57:47,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 119 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:47,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:57:47,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-11-12 15:57:47,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:57:48,285 INFO L124 PetriNetUnfolderBase]: 1382/3055 cut-off events. [2024-11-12 15:57:48,286 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2024-11-12 15:57:48,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5511 conditions, 3055 events. 1382/3055 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 17518 event pairs, 703 based on Foata normal form. 55/2727 useless extension candidates. Maximal degree in co-relation 5503. Up to 1211 conditions per place. [2024-11-12 15:57:48,302 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 81 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2024-11-12 15:57:48,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 132 transitions, 468 flow [2024-11-12 15:57:48,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 15:57:48,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 15:57:48,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2024-11-12 15:57:48,303 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.751937984496124 [2024-11-12 15:57:48,303 INFO L175 Difference]: Start difference. First operand has 116 places, 119 transitions, 300 flow. Second operand 3 states and 388 transitions. [2024-11-12 15:57:48,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 132 transitions, 468 flow [2024-11-12 15:57:48,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 132 transitions, 439 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-11-12 15:57:48,308 INFO L231 Difference]: Finished difference. Result has 107 places, 109 transitions, 235 flow [2024-11-12 15:57:48,308 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=107, PETRI_TRANSITIONS=109} [2024-11-12 15:57:48,309 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -55 predicate places. [2024-11-12 15:57:48,309 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 109 transitions, 235 flow [2024-11-12 15:57:48,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:48,309 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:57:48,309 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:57:48,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 15:57:48,310 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:57:48,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:57:48,310 INFO L85 PathProgramCache]: Analyzing trace with hash -2068756551, now seen corresponding path program 1 times [2024-11-12 15:57:48,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:57:48,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128229871] [2024-11-12 15:57:48,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:57:48,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:57:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:57:48,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:57:48,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:57:48,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128229871] [2024-11-12 15:57:48,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128229871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:57:48,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:57:48,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 15:57:48,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570580619] [2024-11-12 15:57:48,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:57:48,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 15:57:48,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:57:48,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 15:57:48,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 15:57:48,648 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-12 15:57:48,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 109 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:48,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:57:48,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-12 15:57:48,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:57:48,946 INFO L124 PetriNetUnfolderBase]: 1392/3119 cut-off events. [2024-11-12 15:57:48,947 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-11-12 15:57:48,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5502 conditions, 3119 events. 1392/3119 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 18160 event pairs, 1089 based on Foata normal form. 0/2730 useless extension candidates. Maximal degree in co-relation 5497. Up to 2216 conditions per place. [2024-11-12 15:57:48,957 INFO L140 encePairwiseOnDemand]: 170/172 looper letters, 60 selfloop transitions, 1 changer transitions 0/108 dead transitions. [2024-11-12 15:57:48,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 108 transitions, 355 flow [2024-11-12 15:57:48,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 15:57:48,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 15:57:48,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 361 transitions. [2024-11-12 15:57:48,959 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6996124031007752 [2024-11-12 15:57:48,959 INFO L175 Difference]: Start difference. First operand has 107 places, 109 transitions, 235 flow. Second operand 3 states and 361 transitions. [2024-11-12 15:57:48,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 108 transitions, 355 flow [2024-11-12 15:57:48,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 108 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 15:57:48,961 INFO L231 Difference]: Finished difference. Result has 107 places, 108 transitions, 232 flow [2024-11-12 15:57:48,962 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=107, PETRI_TRANSITIONS=108} [2024-11-12 15:57:48,963 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -55 predicate places. [2024-11-12 15:57:48,964 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 108 transitions, 232 flow [2024-11-12 15:57:48,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:48,964 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:57:48,964 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:57:48,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 15:57:48,964 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:57:48,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:57:48,965 INFO L85 PathProgramCache]: Analyzing trace with hash -2068756552, now seen corresponding path program 1 times [2024-11-12 15:57:48,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:57:48,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267231524] [2024-11-12 15:57:48,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:57:48,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:57:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:57:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:57:49,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:57:49,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267231524] [2024-11-12 15:57:49,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267231524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:57:49,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:57:49,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 15:57:49,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580598428] [2024-11-12 15:57:49,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:57:49,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 15:57:49,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:57:49,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 15:57:49,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 15:57:49,234 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 172 [2024-11-12 15:57:49,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 108 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:49,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:57:49,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 172 [2024-11-12 15:57:49,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:57:49,516 INFO L124 PetriNetUnfolderBase]: 1392/3052 cut-off events. [2024-11-12 15:57:49,516 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-12 15:57:49,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5422 conditions, 3052 events. 1392/3052 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 17365 event pairs, 1089 based on Foata normal form. 77/2795 useless extension candidates. Maximal degree in co-relation 5417. Up to 2216 conditions per place. [2024-11-12 15:57:49,529 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 60 selfloop transitions, 1 changer transitions 0/105 dead transitions. [2024-11-12 15:57:49,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 105 transitions, 348 flow [2024-11-12 15:57:49,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 15:57:49,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 15:57:49,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2024-11-12 15:57:49,531 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6918604651162791 [2024-11-12 15:57:49,531 INFO L175 Difference]: Start difference. First operand has 107 places, 108 transitions, 232 flow. Second operand 3 states and 357 transitions. [2024-11-12 15:57:49,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 105 transitions, 348 flow [2024-11-12 15:57:49,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 105 transitions, 347 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 15:57:49,536 INFO L231 Difference]: Finished difference. Result has 105 places, 105 transitions, 227 flow [2024-11-12 15:57:49,536 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=105, PETRI_TRANSITIONS=105} [2024-11-12 15:57:49,537 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -57 predicate places. [2024-11-12 15:57:49,537 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 105 transitions, 227 flow [2024-11-12 15:57:49,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:49,537 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:57:49,537 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:57:49,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 15:57:49,538 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:57:49,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:57:49,538 INFO L85 PathProgramCache]: Analyzing trace with hash 293058829, now seen corresponding path program 1 times [2024-11-12 15:57:49,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:57:49,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882830117] [2024-11-12 15:57:49,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:57:49,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:57:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:57:49,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:57:49,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:57:49,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882830117] [2024-11-12 15:57:49,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882830117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:57:49,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:57:49,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 15:57:49,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492881880] [2024-11-12 15:57:49,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:57:49,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 15:57:49,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:57:49,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 15:57:49,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 15:57:49,840 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-12 15:57:49,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 105 transitions, 227 flow. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:49,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:57:49,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-12 15:57:49,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:57:50,160 INFO L124 PetriNetUnfolderBase]: 1392/3028 cut-off events. [2024-11-12 15:57:50,160 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-12 15:57:50,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5399 conditions, 3028 events. 1392/3028 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 17063 event pairs, 1074 based on Foata normal form. 12/2730 useless extension candidates. Maximal degree in co-relation 5394. Up to 2187 conditions per place. [2024-11-12 15:57:50,172 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 66 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2024-11-12 15:57:50,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 111 transitions, 378 flow [2024-11-12 15:57:50,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 15:57:50,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 15:57:50,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 466 transitions. [2024-11-12 15:57:50,178 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6773255813953488 [2024-11-12 15:57:50,178 INFO L175 Difference]: Start difference. First operand has 105 places, 105 transitions, 227 flow. Second operand 4 states and 466 transitions. [2024-11-12 15:57:50,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 111 transitions, 378 flow [2024-11-12 15:57:50,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 111 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 15:57:50,180 INFO L231 Difference]: Finished difference. Result has 105 places, 103 transitions, 228 flow [2024-11-12 15:57:50,180 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=105, PETRI_TRANSITIONS=103} [2024-11-12 15:57:50,182 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -57 predicate places. [2024-11-12 15:57:50,182 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 103 transitions, 228 flow [2024-11-12 15:57:50,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:50,183 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:57:50,183 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:57:50,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 15:57:50,183 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:57:50,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:57:50,183 INFO L85 PathProgramCache]: Analyzing trace with hash 293058830, now seen corresponding path program 1 times [2024-11-12 15:57:50,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:57:50,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737838580] [2024-11-12 15:57:50,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:57:50,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:57:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:57:50,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:57:50,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:57:50,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737838580] [2024-11-12 15:57:50,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737838580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:57:50,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:57:50,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 15:57:50,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000521532] [2024-11-12 15:57:50,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:57:50,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 15:57:50,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:57:50,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 15:57:50,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 15:57:50,769 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-12 15:57:50,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 103 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:50,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:57:50,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-12 15:57:50,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:57:51,106 INFO L124 PetriNetUnfolderBase]: 1392/3004 cut-off events. [2024-11-12 15:57:51,106 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-12 15:57:51,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5400 conditions, 3004 events. 1392/3004 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 16841 event pairs, 1074 based on Foata normal form. 24/2730 useless extension candidates. Maximal degree in co-relation 5395. Up to 2187 conditions per place. [2024-11-12 15:57:51,134 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 66 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2024-11-12 15:57:51,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 109 transitions, 379 flow [2024-11-12 15:57:51,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 15:57:51,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 15:57:51,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 466 transitions. [2024-11-12 15:57:51,140 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6773255813953488 [2024-11-12 15:57:51,140 INFO L175 Difference]: Start difference. First operand has 105 places, 103 transitions, 228 flow. Second operand 4 states and 466 transitions. [2024-11-12 15:57:51,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 109 transitions, 379 flow [2024-11-12 15:57:51,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 109 transitions, 373 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 15:57:51,146 INFO L231 Difference]: Finished difference. Result has 103 places, 101 transitions, 224 flow [2024-11-12 15:57:51,146 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=103, PETRI_TRANSITIONS=101} [2024-11-12 15:57:51,147 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -59 predicate places. [2024-11-12 15:57:51,147 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 101 transitions, 224 flow [2024-11-12 15:57:51,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:51,147 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:57:51,147 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:57:51,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 15:57:51,147 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:57:51,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:57:51,148 INFO L85 PathProgramCache]: Analyzing trace with hash 494858813, now seen corresponding path program 1 times [2024-11-12 15:57:51,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:57:51,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976268982] [2024-11-12 15:57:51,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:57:51,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:57:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:57:51,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:57:51,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:57:51,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976268982] [2024-11-12 15:57:51,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976268982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:57:51,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:57:51,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 15:57:51,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122503769] [2024-11-12 15:57:51,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:57:51,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 15:57:51,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:57:51,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 15:57:51,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 15:57:51,342 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-11-12 15:57:51,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 101 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:51,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:57:51,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-11-12 15:57:51,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:57:51,664 INFO L124 PetriNetUnfolderBase]: 1380/2992 cut-off events. [2024-11-12 15:57:51,665 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-12 15:57:51,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5376 conditions, 2992 events. 1380/2992 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 16810 event pairs, 1074 based on Foata normal form. 0/2706 useless extension candidates. Maximal degree in co-relation 5371. Up to 2176 conditions per place. [2024-11-12 15:57:51,675 INFO L140 encePairwiseOnDemand]: 169/172 looper letters, 66 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2024-11-12 15:57:51,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 108 transitions, 375 flow [2024-11-12 15:57:51,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 15:57:51,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 15:57:51,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2024-11-12 15:57:51,677 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7189922480620154 [2024-11-12 15:57:51,677 INFO L175 Difference]: Start difference. First operand has 103 places, 101 transitions, 224 flow. Second operand 3 states and 371 transitions. [2024-11-12 15:57:51,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 108 transitions, 375 flow [2024-11-12 15:57:51,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 108 transitions, 369 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 15:57:51,679 INFO L231 Difference]: Finished difference. Result has 102 places, 100 transitions, 220 flow [2024-11-12 15:57:51,679 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=102, PETRI_TRANSITIONS=100} [2024-11-12 15:57:51,680 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -60 predicate places. [2024-11-12 15:57:51,680 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 100 transitions, 220 flow [2024-11-12 15:57:51,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:51,680 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:57:51,680 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:57:51,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-12 15:57:51,680 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:57:51,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:57:51,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1861204073, now seen corresponding path program 1 times [2024-11-12 15:57:51,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:57:51,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659671638] [2024-11-12 15:57:51,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:57:51,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:57:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:57:52,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:57:52,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:57:52,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659671638] [2024-11-12 15:57:52,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659671638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:57:52,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:57:52,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 15:57:52,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998037318] [2024-11-12 15:57:52,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:57:52,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 15:57:52,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:57:52,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 15:57:52,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-12 15:57:53,381 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 172 [2024-11-12 15:57:53,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 100 transitions, 220 flow. Second operand has 10 states, 10 states have (on average 94.3) internal successors, (943), 10 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:53,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:57:53,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 172 [2024-11-12 15:57:53,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:57:54,025 INFO L124 PetriNetUnfolderBase]: 1717/3481 cut-off events. [2024-11-12 15:57:54,026 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-12 15:57:54,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6486 conditions, 3481 events. 1717/3481 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 19017 event pairs, 388 based on Foata normal form. 0/3243 useless extension candidates. Maximal degree in co-relation 6481. Up to 2364 conditions per place. [2024-11-12 15:57:54,037 INFO L140 encePairwiseOnDemand]: 159/172 looper letters, 117 selfloop transitions, 12 changer transitions 0/160 dead transitions. [2024-11-12 15:57:54,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 160 transitions, 608 flow [2024-11-12 15:57:54,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 15:57:54,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 15:57:54,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 957 transitions. [2024-11-12 15:57:54,039 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6182170542635659 [2024-11-12 15:57:54,040 INFO L175 Difference]: Start difference. First operand has 102 places, 100 transitions, 220 flow. Second operand 9 states and 957 transitions. [2024-11-12 15:57:54,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 160 transitions, 608 flow [2024-11-12 15:57:54,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 160 transitions, 604 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 15:57:54,042 INFO L231 Difference]: Finished difference. Result has 108 places, 101 transitions, 252 flow [2024-11-12 15:57:54,042 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=252, PETRI_PLACES=108, PETRI_TRANSITIONS=101} [2024-11-12 15:57:54,043 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -54 predicate places. [2024-11-12 15:57:54,043 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 101 transitions, 252 flow [2024-11-12 15:57:54,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 94.3) internal successors, (943), 10 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:54,044 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:57:54,044 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:57:54,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-12 15:57:54,044 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:57:54,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:57:54,045 INFO L85 PathProgramCache]: Analyzing trace with hash 750049702, now seen corresponding path program 1 times [2024-11-12 15:57:54,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:57:54,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608907112] [2024-11-12 15:57:54,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:57:54,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:57:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:57:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:57:55,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:57:55,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608907112] [2024-11-12 15:57:55,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608907112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:57:55,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:57:55,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-12 15:57:55,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044611969] [2024-11-12 15:57:55,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:57:55,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 15:57:55,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:57:55,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 15:57:55,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-12 15:57:56,720 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 172 [2024-11-12 15:57:56,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 101 transitions, 252 flow. Second operand has 15 states, 15 states have (on average 92.66666666666667) internal successors, (1390), 15 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:56,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:57:56,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 172 [2024-11-12 15:57:56,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:57:57,307 INFO L124 PetriNetUnfolderBase]: 1711/3420 cut-off events. [2024-11-12 15:57:57,307 INFO L125 PetriNetUnfolderBase]: For 203/203 co-relation queries the response was YES. [2024-11-12 15:57:57,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6719 conditions, 3420 events. 1711/3420 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 18707 event pairs, 438 based on Foata normal form. 0/3216 useless extension candidates. Maximal degree in co-relation 6713. Up to 2065 conditions per place. [2024-11-12 15:57:57,315 INFO L140 encePairwiseOnDemand]: 157/172 looper letters, 129 selfloop transitions, 14 changer transitions 0/170 dead transitions. [2024-11-12 15:57:57,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 170 transitions, 686 flow [2024-11-12 15:57:57,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 15:57:57,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-12 15:57:57,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1323 transitions. [2024-11-12 15:57:57,318 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5916815742397138 [2024-11-12 15:57:57,318 INFO L175 Difference]: Start difference. First operand has 108 places, 101 transitions, 252 flow. Second operand 13 states and 1323 transitions. [2024-11-12 15:57:57,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 170 transitions, 686 flow [2024-11-12 15:57:57,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 170 transitions, 666 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-12 15:57:57,321 INFO L231 Difference]: Finished difference. Result has 110 places, 98 transitions, 260 flow [2024-11-12 15:57:57,321 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=260, PETRI_PLACES=110, PETRI_TRANSITIONS=98} [2024-11-12 15:57:57,321 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -52 predicate places. [2024-11-12 15:57:57,321 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 98 transitions, 260 flow [2024-11-12 15:57:57,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.66666666666667) internal successors, (1390), 15 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:57,322 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:57:57,322 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:57:57,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-12 15:57:57,323 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:57:57,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:57:57,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1845955818, now seen corresponding path program 1 times [2024-11-12 15:57:57,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:57:57,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331460224] [2024-11-12 15:57:57,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:57:57,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:57:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:57:58,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:57:58,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:57:58,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331460224] [2024-11-12 15:57:58,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331460224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:57:58,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:57:58,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 15:57:58,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778442810] [2024-11-12 15:57:58,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:57:58,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 15:57:58,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:57:58,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 15:57:58,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-12 15:57:59,319 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 172 [2024-11-12 15:57:59,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 98 transitions, 260 flow. Second operand has 11 states, 11 states have (on average 76.63636363636364) internal successors, (843), 11 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:57:59,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:57:59,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 172 [2024-11-12 15:57:59,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:58:00,000 INFO L124 PetriNetUnfolderBase]: 2375/4664 cut-off events. [2024-11-12 15:58:00,000 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-11-12 15:58:00,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9286 conditions, 4664 events. 2375/4664 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 27644 event pairs, 226 based on Foata normal form. 56/4467 useless extension candidates. Maximal degree in co-relation 9279. Up to 2173 conditions per place. [2024-11-12 15:58:00,023 INFO L140 encePairwiseOnDemand]: 157/172 looper letters, 154 selfloop transitions, 19 changer transitions 0/201 dead transitions. [2024-11-12 15:58:00,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 201 transitions, 851 flow [2024-11-12 15:58:00,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 15:58:00,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 15:58:00,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 982 transitions. [2024-11-12 15:58:00,026 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5190274841437632 [2024-11-12 15:58:00,026 INFO L175 Difference]: Start difference. First operand has 110 places, 98 transitions, 260 flow. Second operand 11 states and 982 transitions. [2024-11-12 15:58:00,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 201 transitions, 851 flow [2024-11-12 15:58:00,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 201 transitions, 827 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-12 15:58:00,032 INFO L231 Difference]: Finished difference. Result has 113 places, 108 transitions, 346 flow [2024-11-12 15:58:00,032 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=346, PETRI_PLACES=113, PETRI_TRANSITIONS=108} [2024-11-12 15:58:00,032 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -49 predicate places. [2024-11-12 15:58:00,032 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 108 transitions, 346 flow [2024-11-12 15:58:00,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 76.63636363636364) internal successors, (843), 11 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:58:00,033 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:58:00,033 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:58:00,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-12 15:58:00,033 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:58:00,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:58:00,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1672722119, now seen corresponding path program 1 times [2024-11-12 15:58:00,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:58:00,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282212077] [2024-11-12 15:58:00,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:58:00,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:58:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:58:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:58:00,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:58:00,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282212077] [2024-11-12 15:58:00,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282212077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:58:00,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:58:00,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 15:58:00,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918453864] [2024-11-12 15:58:00,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:58:00,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 15:58:00,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:58:00,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 15:58:00,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 15:58:00,121 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-11-12 15:58:00,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 108 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:58:00,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:58:00,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-11-12 15:58:00,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:58:00,858 INFO L124 PetriNetUnfolderBase]: 3330/7329 cut-off events. [2024-11-12 15:58:00,858 INFO L125 PetriNetUnfolderBase]: For 1674/1740 co-relation queries the response was YES. [2024-11-12 15:58:00,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14796 conditions, 7329 events. 3330/7329 cut-off events. For 1674/1740 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 54383 event pairs, 1490 based on Foata normal form. 183/6957 useless extension candidates. Maximal degree in co-relation 14785. Up to 3220 conditions per place. [2024-11-12 15:58:00,893 INFO L140 encePairwiseOnDemand]: 169/172 looper letters, 127 selfloop transitions, 2 changer transitions 0/167 dead transitions. [2024-11-12 15:58:00,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 167 transitions, 823 flow [2024-11-12 15:58:00,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 15:58:00,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 15:58:00,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2024-11-12 15:58:00,895 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7887596899224806 [2024-11-12 15:58:00,895 INFO L175 Difference]: Start difference. First operand has 113 places, 108 transitions, 346 flow. Second operand 3 states and 407 transitions. [2024-11-12 15:58:00,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 167 transitions, 823 flow [2024-11-12 15:58:00,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 167 transitions, 788 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-12 15:58:00,901 INFO L231 Difference]: Finished difference. Result has 111 places, 109 transitions, 338 flow [2024-11-12 15:58:00,901 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=111, PETRI_TRANSITIONS=109} [2024-11-12 15:58:00,902 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -51 predicate places. [2024-11-12 15:58:00,902 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 109 transitions, 338 flow [2024-11-12 15:58:00,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:58:00,902 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:58:00,902 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:58:00,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-12 15:58:00,903 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:58:00,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:58:00,903 INFO L85 PathProgramCache]: Analyzing trace with hash -156280063, now seen corresponding path program 1 times [2024-11-12 15:58:00,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:58:00,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098265966] [2024-11-12 15:58:00,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:58:00,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:58:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:58:01,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 15:58:01,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:58:01,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098265966] [2024-11-12 15:58:01,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098265966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:58:01,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:58:01,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 15:58:01,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833874097] [2024-11-12 15:58:01,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:58:01,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 15:58:01,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:58:01,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 15:58:01,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 15:58:01,376 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-12 15:58:01,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 109 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:58:01,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:58:01,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-12 15:58:01,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:58:02,065 INFO L124 PetriNetUnfolderBase]: 4187/8359 cut-off events. [2024-11-12 15:58:02,065 INFO L125 PetriNetUnfolderBase]: For 2335/2373 co-relation queries the response was YES. [2024-11-12 15:58:02,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18414 conditions, 8359 events. 4187/8359 cut-off events. For 2335/2373 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 58933 event pairs, 2277 based on Foata normal form. 92/7972 useless extension candidates. Maximal degree in co-relation 18401. Up to 5629 conditions per place. [2024-11-12 15:58:02,096 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 104 selfloop transitions, 3 changer transitions 0/144 dead transitions. [2024-11-12 15:58:02,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 144 transitions, 667 flow [2024-11-12 15:58:02,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 15:58:02,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 15:58:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 488 transitions. [2024-11-12 15:58:02,097 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7093023255813954 [2024-11-12 15:58:02,097 INFO L175 Difference]: Start difference. First operand has 111 places, 109 transitions, 338 flow. Second operand 4 states and 488 transitions. [2024-11-12 15:58:02,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 144 transitions, 667 flow [2024-11-12 15:58:02,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 144 transitions, 663 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 15:58:02,104 INFO L231 Difference]: Finished difference. Result has 114 places, 110 transitions, 352 flow [2024-11-12 15:58:02,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=352, PETRI_PLACES=114, PETRI_TRANSITIONS=110} [2024-11-12 15:58:02,104 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -48 predicate places. [2024-11-12 15:58:02,104 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 110 transitions, 352 flow [2024-11-12 15:58:02,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:58:02,105 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:58:02,105 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:58:02,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-12 15:58:02,105 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:58:02,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:58:02,105 INFO L85 PathProgramCache]: Analyzing trace with hash -811902022, now seen corresponding path program 1 times [2024-11-12 15:58:02,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:58:02,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550149444] [2024-11-12 15:58:02,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:58:02,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:58:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:58:02,176 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 15:58:02,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:58:02,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550149444] [2024-11-12 15:58:02,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550149444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:58:02,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:58:02,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 15:58:02,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632840401] [2024-11-12 15:58:02,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:58:02,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 15:58:02,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:58:02,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 15:58:02,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 15:58:02,179 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-12 15:58:02,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 110 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:58:02,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:58:02,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-12 15:58:02,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:58:02,539 INFO L124 PetriNetUnfolderBase]: 2481/5250 cut-off events. [2024-11-12 15:58:02,540 INFO L125 PetriNetUnfolderBase]: For 1237/1237 co-relation queries the response was YES. [2024-11-12 15:58:02,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11266 conditions, 5250 events. 2481/5250 cut-off events. For 1237/1237 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 33944 event pairs, 1218 based on Foata normal form. 124/5126 useless extension candidates. Maximal degree in co-relation 11252. Up to 2282 conditions per place. [2024-11-12 15:58:02,559 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 80 selfloop transitions, 3 changer transitions 0/119 dead transitions. [2024-11-12 15:58:02,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 119 transitions, 523 flow [2024-11-12 15:58:02,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 15:58:02,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 15:58:02,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2024-11-12 15:58:02,561 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7248062015503876 [2024-11-12 15:58:02,561 INFO L175 Difference]: Start difference. First operand has 114 places, 110 transitions, 352 flow. Second operand 3 states and 374 transitions. [2024-11-12 15:58:02,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 119 transitions, 523 flow [2024-11-12 15:58:02,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 119 transitions, 501 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-12 15:58:02,565 INFO L231 Difference]: Finished difference. Result has 111 places, 103 transitions, 304 flow [2024-11-12 15:58:02,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=111, PETRI_TRANSITIONS=103} [2024-11-12 15:58:02,568 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -51 predicate places. [2024-11-12 15:58:02,568 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 103 transitions, 304 flow [2024-11-12 15:58:02,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:58:02,568 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:58:02,568 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:58:02,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-12 15:58:02,569 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:58:02,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:58:02,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1619008948, now seen corresponding path program 1 times [2024-11-12 15:58:02,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:58:02,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276983619] [2024-11-12 15:58:02,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:58:02,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:58:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:58:02,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 15:58:02,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:58:02,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276983619] [2024-11-12 15:58:02,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276983619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:58:02,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:58:02,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 15:58:02,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204433052] [2024-11-12 15:58:02,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:58:02,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 15:58:02,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:58:02,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 15:58:02,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 15:58:02,752 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-11-12 15:58:02,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 103 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:58:02,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:58:02,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-11-12 15:58:02,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:58:03,000 INFO L124 PetriNetUnfolderBase]: 1512/3602 cut-off events. [2024-11-12 15:58:03,000 INFO L125 PetriNetUnfolderBase]: For 1075/1075 co-relation queries the response was YES. [2024-11-12 15:58:03,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7826 conditions, 3602 events. 1512/3602 cut-off events. For 1075/1075 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 21540 event pairs, 368 based on Foata normal form. 218/3654 useless extension candidates. Maximal degree in co-relation 7813. Up to 1849 conditions per place. [2024-11-12 15:58:03,012 INFO L140 encePairwiseOnDemand]: 166/172 looper letters, 72 selfloop transitions, 6 changer transitions 0/116 dead transitions. [2024-11-12 15:58:03,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 116 transitions, 504 flow [2024-11-12 15:58:03,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 15:58:03,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 15:58:03,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2024-11-12 15:58:03,013 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7248062015503876 [2024-11-12 15:58:03,013 INFO L175 Difference]: Start difference. First operand has 111 places, 103 transitions, 304 flow. Second operand 3 states and 374 transitions. [2024-11-12 15:58:03,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 116 transitions, 504 flow [2024-11-12 15:58:03,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 116 transitions, 498 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 15:58:03,016 INFO L231 Difference]: Finished difference. Result has 111 places, 103 transitions, 310 flow [2024-11-12 15:58:03,016 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=111, PETRI_TRANSITIONS=103} [2024-11-12 15:58:03,017 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -51 predicate places. [2024-11-12 15:58:03,017 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 103 transitions, 310 flow [2024-11-12 15:58:03,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:58:03,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:58:03,017 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:58:03,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-12 15:58:03,018 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:58:03,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:58:03,018 INFO L85 PathProgramCache]: Analyzing trace with hash -487572018, now seen corresponding path program 1 times [2024-11-12 15:58:03,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:58:03,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239684477] [2024-11-12 15:58:03,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:58:03,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:58:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:58:03,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 15:58:03,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:58:03,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239684477] [2024-11-12 15:58:03,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239684477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:58:03,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:58:03,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 15:58:03,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136000129] [2024-11-12 15:58:03,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:58:03,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 15:58:03,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:58:03,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 15:58:03,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 15:58:03,390 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 172 [2024-11-12 15:58:03,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 103 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:58:03,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:58:03,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 172 [2024-11-12 15:58:03,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:58:03,650 INFO L124 PetriNetUnfolderBase]: 1512/3353 cut-off events. [2024-11-12 15:58:03,650 INFO L125 PetriNetUnfolderBase]: For 1228/1228 co-relation queries the response was YES. [2024-11-12 15:58:03,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7874 conditions, 3353 events. 1512/3353 cut-off events. For 1228/1228 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 18782 event pairs, 1021 based on Foata normal form. 126/3391 useless extension candidates. Maximal degree in co-relation 7861. Up to 2207 conditions per place. [2024-11-12 15:58:03,662 INFO L140 encePairwiseOnDemand]: 162/172 looper letters, 67 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2024-11-12 15:58:03,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 101 transitions, 453 flow [2024-11-12 15:58:03,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 15:58:03,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 15:58:03,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 444 transitions. [2024-11-12 15:58:03,664 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6453488372093024 [2024-11-12 15:58:03,664 INFO L175 Difference]: Start difference. First operand has 111 places, 103 transitions, 310 flow. Second operand 4 states and 444 transitions. [2024-11-12 15:58:03,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 101 transitions, 453 flow [2024-11-12 15:58:03,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 101 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 15:58:03,668 INFO L231 Difference]: Finished difference. Result has 106 places, 96 transitions, 296 flow [2024-11-12 15:58:03,668 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=106, PETRI_TRANSITIONS=96} [2024-11-12 15:58:03,668 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -56 predicate places. [2024-11-12 15:58:03,668 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 96 transitions, 296 flow [2024-11-12 15:58:03,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:58:03,669 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:58:03,669 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:58:03,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-12 15:58:03,669 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:58:03,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:58:03,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1986962457, now seen corresponding path program 1 times [2024-11-12 15:58:03,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:58:03,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349690928] [2024-11-12 15:58:03,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:58:03,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:58:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:58:03,779 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-12 15:58:03,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:58:03,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349690928] [2024-11-12 15:58:03,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349690928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:58:03,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243217046] [2024-11-12 15:58:03,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:58:03,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:58:03,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:58:03,782 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) [2024-11-12 15:58:03,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 15:58:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:58:04,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 1951 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-12 15:58:04,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 15:58:04,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 15:58:04,126 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 15:58:04,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243217046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:58:04,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 15:58:04,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-12 15:58:04,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863319322] [2024-11-12 15:58:04,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:58:04,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 15:58:04,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:58:04,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 15:58:04,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 15:58:04,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-12 15:58:04,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 96 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 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) [2024-11-12 15:58:04,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:58:04,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-12 15:58:04,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:58:04,408 INFO L124 PetriNetUnfolderBase]: 1512/3356 cut-off events. [2024-11-12 15:58:04,408 INFO L125 PetriNetUnfolderBase]: For 1153/1153 co-relation queries the response was YES. [2024-11-12 15:58:04,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7761 conditions, 3356 events. 1512/3356 cut-off events. For 1153/1153 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 18848 event pairs, 1201 based on Foata normal form. 5/3259 useless extension candidates. Maximal degree in co-relation 7747. Up to 2625 conditions per place. [2024-11-12 15:58:04,418 INFO L140 encePairwiseOnDemand]: 170/172 looper letters, 63 selfloop transitions, 1 changer transitions 2/95 dead transitions. [2024-11-12 15:58:04,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 95 transitions, 424 flow [2024-11-12 15:58:04,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 15:58:04,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 15:58:04,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2024-11-12 15:58:04,419 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6937984496124031 [2024-11-12 15:58:04,419 INFO L175 Difference]: Start difference. First operand has 106 places, 96 transitions, 296 flow. Second operand 3 states and 358 transitions. [2024-11-12 15:58:04,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 95 transitions, 424 flow [2024-11-12 15:58:04,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 95 transitions, 418 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 15:58:04,422 INFO L231 Difference]: Finished difference. Result has 104 places, 93 transitions, 285 flow [2024-11-12 15:58:04,422 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=104, PETRI_TRANSITIONS=93} [2024-11-12 15:58:04,423 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -58 predicate places. [2024-11-12 15:58:04,423 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 93 transitions, 285 flow [2024-11-12 15:58:04,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 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) [2024-11-12 15:58:04,423 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:58:04,423 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:58:04,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 15:58:04,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-12 15:58:04,628 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:58:04,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:58:04,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1392522897, now seen corresponding path program 1 times [2024-11-12 15:58:04,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:58:04,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594015625] [2024-11-12 15:58:04,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:58:04,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:58:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:58:05,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 15:58:05,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:58:05,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594015625] [2024-11-12 15:58:05,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594015625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:58:05,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740655769] [2024-11-12 15:58:05,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:58:05,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:58:05,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:58:05,919 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) [2024-11-12 15:58:05,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 15:58:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:58:06,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 2005 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-12 15:58:06,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 15:58:06,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-12 15:58:06,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-12 15:58:06,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2024-11-12 15:58:06,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 15:58:06,477 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-12 15:58:06,496 INFO L349 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2024-11-12 15:58:06,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 28 [2024-11-12 15:58:06,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 15:58:06,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 15:58:06,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2024-11-12 15:58:06,578 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 15:58:06,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 25 [2024-11-12 15:58:06,715 INFO L349 Elim1Store]: treesize reduction 52, result has 26.8 percent of original size [2024-11-12 15:58:06,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 25 [2024-11-12 15:58:06,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 15:58:06,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2024-11-12 15:58:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:58:06,750 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 15:58:12,131 INFO L349 Elim1Store]: treesize reduction 106, result has 33.3 percent of original size [2024-11-12 15:58:12,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 511 treesize of output 491 [2024-11-12 15:58:12,149 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 15:58:12,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 207 [2024-11-12 15:58:12,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-12 15:58:12,235 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 15:58:12,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 132 treesize of output 136 [2024-11-12 15:58:12,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 15:58:12,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740655769] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 15:58:12,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 15:58:12,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 15] total 38 [2024-11-12 15:58:12,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550894203] [2024-11-12 15:58:12,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 15:58:12,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-12 15:58:12,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:58:12,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-12 15:58:12,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1266, Unknown=0, NotChecked=0, Total=1482 [2024-11-12 15:58:17,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-12 15:58:25,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-12 15:58:31,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-12 15:58:33,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-12 15:58:37,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-12 15:58:38,376 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 172 [2024-11-12 15:58:38,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 93 transitions, 285 flow. Second operand has 39 states, 39 states have (on average 92.05128205128206) internal successors, (3590), 39 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:58:38,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:58:38,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 172 [2024-11-12 15:58:38,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:58:40,305 INFO L124 PetriNetUnfolderBase]: 1485/3139 cut-off events. [2024-11-12 15:58:40,305 INFO L125 PetriNetUnfolderBase]: For 1031/1031 co-relation queries the response was YES. [2024-11-12 15:58:40,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7293 conditions, 3139 events. 1485/3139 cut-off events. For 1031/1031 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 15331 event pairs, 227 based on Foata normal form. 0/3071 useless extension candidates. Maximal degree in co-relation 7279. Up to 999 conditions per place. [2024-11-12 15:58:40,317 INFO L140 encePairwiseOnDemand]: 150/172 looper letters, 149 selfloop transitions, 22 changer transitions 17/206 dead transitions. [2024-11-12 15:58:40,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 206 transitions, 1022 flow [2024-11-12 15:58:40,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 15:58:40,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-12 15:58:40,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1685 transitions. [2024-11-12 15:58:40,319 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.576265389876881 [2024-11-12 15:58:40,320 INFO L175 Difference]: Start difference. First operand has 104 places, 93 transitions, 285 flow. Second operand 17 states and 1685 transitions. [2024-11-12 15:58:40,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 206 transitions, 1022 flow [2024-11-12 15:58:40,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 206 transitions, 1015 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-12 15:58:40,324 INFO L231 Difference]: Finished difference. Result has 121 places, 96 transitions, 349 flow [2024-11-12 15:58:40,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=349, PETRI_PLACES=121, PETRI_TRANSITIONS=96} [2024-11-12 15:58:40,325 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -41 predicate places. [2024-11-12 15:58:40,325 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 96 transitions, 349 flow [2024-11-12 15:58:40,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 92.05128205128206) internal successors, (3590), 39 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 15:58:40,326 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:58:40,327 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:58:40,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 15:58:40,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-12 15:58:40,531 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-12 15:58:40,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:58:40,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1087390889, now seen corresponding path program 1 times [2024-11-12 15:58:40,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:58:40,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619687878] [2024-11-12 15:58:40,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:58:40,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:58:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:58:43,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 15:58:43,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:58:43,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619687878] [2024-11-12 15:58:43,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619687878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:58:43,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908789856] [2024-11-12 15:58:43,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:58:43,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:58:43,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:58:43,542 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) [2024-11-12 15:58:43,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 15:58:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:58:43,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 2012 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-12 15:58:43,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 15:58:43,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 15:58:44,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-12 15:58:44,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-12 15:58:44,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 15:58:44,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 15:58:44,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2024-11-12 15:58:44,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-12 15:58:44,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-12 15:58:44,735 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-12 15:58:44,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 24 [2024-11-12 15:58:44,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-12 15:58:44,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-12 15:58:44,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:58:44,917 INFO L312 TraceCheckSpWp]: Computing backward predicates...