./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:18:54,254 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:18:54,332 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:18:54,339 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:18:54,340 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:18:54,368 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:18:54,369 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:18:54,369 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:18:54,370 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:18:54,370 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:18:54,371 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:18:54,371 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:18:54,372 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:18:54,373 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:18:54,373 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:18:54,373 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:18:54,374 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:18:54,374 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:18:54,374 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:18:54,374 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:18:54,375 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:18:54,375 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:18:54,376 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:18:54,376 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:18:54,376 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:18:54,376 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:18:54,377 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:18:54,377 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:18:54,377 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:18:54,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:18:54,378 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:18:54,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:18:54,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:18:54,379 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:18:54,379 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:18:54,379 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:18:54,380 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:18:54,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:18:54,380 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:18:54,381 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:18:54,381 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:18:54,381 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:18:54,382 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2024-11-16 19:18:54,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:18:54,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:18:54,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:18:54,672 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:18:54,672 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:18:54,673 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2024-11-16 19:18:56,111 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:18:56,411 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:18:56,412 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2024-11-16 19:18:56,442 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c7097330/a5f2e42658ce45d5891bdc5a24671f5c/FLAG3e782ca14 [2024-11-16 19:18:56,458 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c7097330/a5f2e42658ce45d5891bdc5a24671f5c [2024-11-16 19:18:56,461 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:18:56,463 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:18:56,464 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:18:56,464 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:18:56,470 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:18:56,473 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:18:56" (1/1) ... [2024-11-16 19:18:56,474 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54cf7cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:18:56, skipping insertion in model container [2024-11-16 19:18:56,474 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:18:56" (1/1) ... [2024-11-16 19:18:56,528 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:18:56,710 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2024-11-16 19:18:57,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:18:57,087 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:18:57,101 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2024-11-16 19:18:57,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:18:57,233 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:18:57,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:18:57 WrapperNode [2024-11-16 19:18:57,234 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:18:57,235 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:18:57,235 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:18:57,235 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:18:57,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:18:57" (1/1) ... [2024-11-16 19:18:57,262 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:18:57" (1/1) ... [2024-11-16 19:18:57,293 INFO L138 Inliner]: procedures = 364, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2024-11-16 19:18:57,294 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:18:57,294 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:18:57,295 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:18:57,295 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:18:57,305 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:18:57" (1/1) ... [2024-11-16 19:18:57,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:18:57" (1/1) ... [2024-11-16 19:18:57,309 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:18:57" (1/1) ... [2024-11-16 19:18:57,325 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-16 19:18:57,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:18:57" (1/1) ... [2024-11-16 19:18:57,326 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:18:57" (1/1) ... [2024-11-16 19:18:57,333 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:18:57" (1/1) ... [2024-11-16 19:18:57,334 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:18:57" (1/1) ... [2024-11-16 19:18:57,336 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:18:57" (1/1) ... [2024-11-16 19:18:57,341 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:18:57" (1/1) ... [2024-11-16 19:18:57,343 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:18:57,344 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:18:57,344 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:18:57,344 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:18:57,345 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:18:57" (1/1) ... [2024-11-16 19:18:57,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:18:57,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:18:57,382 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) [2024-11-16 19:18:57,384 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 [2024-11-16 19:18:57,425 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-16 19:18:57,425 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-16 19:18:57,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:18:57,426 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2024-11-16 19:18:57,426 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2024-11-16 19:18:57,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:18:57,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:18:57,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:18:57,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:18:57,428 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:18:57,548 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:18:57,550 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:18:57,728 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:18:57,728 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:18:57,847 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:18:57,848 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:18:57,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:18:57 BoogieIcfgContainer [2024-11-16 19:18:57,849 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:18:57,851 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:18:57,851 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:18:57,856 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:18:57,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:18:56" (1/3) ... [2024-11-16 19:18:57,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106d1f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:18:57, skipping insertion in model container [2024-11-16 19:18:57,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:18:57" (2/3) ... [2024-11-16 19:18:57,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106d1f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:18:57, skipping insertion in model container [2024-11-16 19:18:57,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:18:57" (3/3) ... [2024-11-16 19:18:57,859 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2024-11-16 19:18:57,876 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:18:57,877 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:18:57,878 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:18:57,921 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-16 19:18:57,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 29 transitions, 65 flow [2024-11-16 19:18:57,991 INFO L124 PetriNetUnfolderBase]: 5/28 cut-off events. [2024-11-16 19:18:57,994 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-16 19:18:57,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 28 events. 5/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 19. Up to 2 conditions per place. [2024-11-16 19:18:58,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 29 transitions, 65 flow [2024-11-16 19:18:58,004 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 25 transitions, 56 flow [2024-11-16 19:18:58,019 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:18:58,029 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=LoopHeads, 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;@7dc9972b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:18:58,030 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 19:18:58,043 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:18:58,044 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-11-16 19:18:58,044 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-16 19:18:58,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:18:58,045 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:18:58,046 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:18:58,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:18:58,051 INFO L85 PathProgramCache]: Analyzing trace with hash -24719282, now seen corresponding path program 1 times [2024-11-16 19:18:58,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:18:58,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046905044] [2024-11-16 19:18:58,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:18:58,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:18:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:18:58,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:18:58,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:18:58,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046905044] [2024-11-16 19:18:58,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046905044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:18:58,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:18:58,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:18:58,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764168017] [2024-11-16 19:18:58,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:18:58,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:18:58,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:18:58,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:18:58,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:18:58,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-11-16 19:18:58,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 25 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:18:58,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:18:58,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-11-16 19:18:58,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:18:58,437 INFO L124 PetriNetUnfolderBase]: 31/81 cut-off events. [2024-11-16 19:18:58,440 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 19:18:58,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 81 events. 31/81 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 255 event pairs, 20 based on Foata normal form. 11/84 useless extension candidates. Maximal degree in co-relation 135. Up to 66 conditions per place. [2024-11-16 19:18:58,443 INFO L140 encePairwiseOnDemand]: 27/29 looper letters, 16 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2024-11-16 19:18:58,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 23 transitions, 84 flow [2024-11-16 19:18:58,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:18:58,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:18:58,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 36 transitions. [2024-11-16 19:18:58,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6206896551724138 [2024-11-16 19:18:58,453 INFO L175 Difference]: Start difference. First operand has 25 places, 25 transitions, 56 flow. Second operand 2 states and 36 transitions. [2024-11-16 19:18:58,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 23 transitions, 84 flow [2024-11-16 19:18:58,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 23 transitions, 80 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:18:58,457 INFO L231 Difference]: Finished difference. Result has 24 places, 23 transitions, 48 flow [2024-11-16 19:18:58,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=48, PETRI_PLACES=24, PETRI_TRANSITIONS=23} [2024-11-16 19:18:58,462 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, -1 predicate places. [2024-11-16 19:18:58,462 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 23 transitions, 48 flow [2024-11-16 19:18:58,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:18:58,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:18:58,463 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:18:58,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:18:58,463 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:18:58,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:18:58,464 INFO L85 PathProgramCache]: Analyzing trace with hash 2051336796, now seen corresponding path program 1 times [2024-11-16 19:18:58,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:18:58,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694820676] [2024-11-16 19:18:58,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:18:58,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:18:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:18:58,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:18:58,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:18:58,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694820676] [2024-11-16 19:18:58,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694820676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:18:58,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:18:58,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:18:58,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819537892] [2024-11-16 19:18:58,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:18:58,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:18:58,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:18:58,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:18:58,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:18:58,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-16 19:18:58,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 23 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:18:58,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:18:58,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-16 19:18:58,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:18:58,672 INFO L124 PetriNetUnfolderBase]: 56/140 cut-off events. [2024-11-16 19:18:58,673 INFO L125 PetriNetUnfolderBase]: For 1/2 co-relation queries the response was YES. [2024-11-16 19:18:58,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 140 events. 56/140 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 487 event pairs, 24 based on Foata normal form. 5/137 useless extension candidates. Maximal degree in co-relation 256. Up to 76 conditions per place. [2024-11-16 19:18:58,674 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 24 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2024-11-16 19:18:58,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 118 flow [2024-11-16 19:18:58,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:18:58,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:18:58,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-11-16 19:18:58,676 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-11-16 19:18:58,676 INFO L175 Difference]: Start difference. First operand has 24 places, 23 transitions, 48 flow. Second operand 3 states and 51 transitions. [2024-11-16 19:18:58,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 118 flow [2024-11-16 19:18:58,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 32 transitions, 118 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:18:58,679 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 60 flow [2024-11-16 19:18:58,679 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2024-11-16 19:18:58,680 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2024-11-16 19:18:58,680 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 60 flow [2024-11-16 19:18:58,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:18:58,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:18:58,681 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:18:58,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:18:58,681 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:18:58,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:18:58,682 INFO L85 PathProgramCache]: Analyzing trace with hash -642445701, now seen corresponding path program 1 times [2024-11-16 19:18:58,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:18:58,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663286727] [2024-11-16 19:18:58,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:18:58,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:18:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:18:58,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:18:58,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:18:58,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663286727] [2024-11-16 19:18:58,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663286727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:18:58,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758958678] [2024-11-16 19:18:58,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:18:58,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:18:58,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:18:58,837 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) [2024-11-16 19:18:58,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:18:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:18:58,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 19:18:58,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:18:58,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:18:58,961 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:18:58,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758958678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:18:58,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:18:58,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-16 19:18:58,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176649085] [2024-11-16 19:18:58,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:18:58,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:18:58,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:18:58,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:18:58,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:18:58,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-16 19:18:58,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:18:58,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:18:58,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-16 19:18:58,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:18:59,063 INFO L124 PetriNetUnfolderBase]: 101/246 cut-off events. [2024-11-16 19:18:59,065 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-16 19:18:59,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 246 events. 101/246 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1021 event pairs, 45 based on Foata normal form. 10/253 useless extension candidates. Maximal degree in co-relation 496. Up to 126 conditions per place. [2024-11-16 19:18:59,070 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 27 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2024-11-16 19:18:59,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 35 transitions, 148 flow [2024-11-16 19:18:59,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:18:59,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:18:59,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-16 19:18:59,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-11-16 19:18:59,073 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 60 flow. Second operand 3 states and 52 transitions. [2024-11-16 19:18:59,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 35 transitions, 148 flow [2024-11-16 19:18:59,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:18:59,074 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 70 flow [2024-11-16 19:18:59,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2024-11-16 19:18:59,077 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2024-11-16 19:18:59,078 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 70 flow [2024-11-16 19:18:59,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:18:59,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:18:59,079 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:18:59,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 19:18:59,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:18:59,283 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:18:59,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:18:59,284 INFO L85 PathProgramCache]: Analyzing trace with hash 2105910123, now seen corresponding path program 1 times [2024-11-16 19:18:59,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:18:59,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077408478] [2024-11-16 19:18:59,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:18:59,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:18:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:18:59,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:18:59,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:18:59,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077408478] [2024-11-16 19:18:59,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077408478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:18:59,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:18:59,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:18:59,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666365222] [2024-11-16 19:18:59,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:18:59,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:18:59,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:18:59,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:18:59,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:18:59,419 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-11-16 19:18:59,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:18:59,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:18:59,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-11-16 19:18:59,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:18:59,509 INFO L124 PetriNetUnfolderBase]: 59/173 cut-off events. [2024-11-16 19:18:59,509 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-11-16 19:18:59,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 173 events. 59/173 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 577 event pairs, 20 based on Foata normal form. 16/185 useless extension candidates. Maximal degree in co-relation 387. Up to 72 conditions per place. [2024-11-16 19:18:59,512 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 21 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-11-16 19:18:59,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 32 transitions, 148 flow [2024-11-16 19:18:59,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:18:59,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:18:59,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-11-16 19:18:59,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2024-11-16 19:18:59,514 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 70 flow. Second operand 3 states and 50 transitions. [2024-11-16 19:18:59,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 32 transitions, 148 flow [2024-11-16 19:18:59,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 32 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:18:59,515 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 76 flow [2024-11-16 19:18:59,516 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2024-11-16 19:18:59,518 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2024-11-16 19:18:59,518 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 76 flow [2024-11-16 19:18:59,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:18:59,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:18:59,518 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:18:59,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:18:59,519 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:18:59,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:18:59,519 INFO L85 PathProgramCache]: Analyzing trace with hash -69691755, now seen corresponding path program 2 times [2024-11-16 19:18:59,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:18:59,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265131477] [2024-11-16 19:18:59,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:18:59,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:18:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:18:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:18:59,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:18:59,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265131477] [2024-11-16 19:18:59,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265131477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:18:59,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866931147] [2024-11-16 19:18:59,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:18:59,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:18:59,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:18:59,607 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) [2024-11-16 19:18:59,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 19:18:59,688 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:18:59,688 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:18:59,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 19:18:59,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:18:59,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:18:59,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:18:59,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:18:59,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866931147] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:18:59,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:18:59,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-16 19:18:59,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538420853] [2024-11-16 19:18:59,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:18:59,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 19:18:59,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:18:59,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 19:18:59,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-16 19:18:59,821 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-16 19:18:59,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 76 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:18:59,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:18:59,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-16 19:18:59,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:19:00,146 INFO L124 PetriNetUnfolderBase]: 250/628 cut-off events. [2024-11-16 19:19:00,147 INFO L125 PetriNetUnfolderBase]: For 285/285 co-relation queries the response was YES. [2024-11-16 19:19:00,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1553 conditions, 628 events. 250/628 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2704 event pairs, 21 based on Foata normal form. 68/696 useless extension candidates. Maximal degree in co-relation 1547. Up to 93 conditions per place. [2024-11-16 19:19:00,153 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 116 selfloop transitions, 33 changer transitions 0/153 dead transitions. [2024-11-16 19:19:00,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 153 transitions, 800 flow [2024-11-16 19:19:00,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 19:19:00,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-16 19:19:00,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 259 transitions. [2024-11-16 19:19:00,157 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5581896551724138 [2024-11-16 19:19:00,159 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 76 flow. Second operand 16 states and 259 transitions. [2024-11-16 19:19:00,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 153 transitions, 800 flow [2024-11-16 19:19:00,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 153 transitions, 746 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:19:00,165 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 346 flow [2024-11-16 19:19:00,166 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=346, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-11-16 19:19:00,167 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 32 predicate places. [2024-11-16 19:19:00,168 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 346 flow [2024-11-16 19:19:00,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:19:00,169 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:19:00,169 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:19:00,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 19:19:00,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:19:00,370 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:19:00,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:19:00,370 INFO L85 PathProgramCache]: Analyzing trace with hash 617175040, now seen corresponding path program 3 times [2024-11-16 19:19:00,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:19:00,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229437008] [2024-11-16 19:19:00,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:19:00,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:19:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:19:00,489 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-16 19:19:00,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:19:00,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229437008] [2024-11-16 19:19:00,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229437008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:19:00,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254921805] [2024-11-16 19:19:00,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:19:00,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:19:00,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:19:00,492 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) [2024-11-16 19:19:00,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 19:19:00,594 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 19:19:00,595 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:19:00,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 19:19:00,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:19:00,644 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-16 19:19:00,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:19:00,702 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-16 19:19:00,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254921805] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:19:00,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:19:00,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-16 19:19:00,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192987160] [2024-11-16 19:19:00,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:19:00,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:19:00,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:19:00,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:19:00,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-16 19:19:00,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-16 19:19:00,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 346 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:19:00,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:19:00,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-16 19:19:00,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:19:01,000 INFO L124 PetriNetUnfolderBase]: 433/1127 cut-off events. [2024-11-16 19:19:01,001 INFO L125 PetriNetUnfolderBase]: For 5507/5548 co-relation queries the response was YES. [2024-11-16 19:19:01,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3759 conditions, 1127 events. 433/1127 cut-off events. For 5507/5548 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5446 event pairs, 80 based on Foata normal form. 102/1203 useless extension candidates. Maximal degree in co-relation 3740. Up to 170 conditions per place. [2024-11-16 19:19:01,010 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 87 selfloop transitions, 20 changer transitions 0/115 dead transitions. [2024-11-16 19:19:01,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 115 transitions, 854 flow [2024-11-16 19:19:01,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 19:19:01,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-16 19:19:01,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-11-16 19:19:01,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5775862068965517 [2024-11-16 19:19:01,012 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 346 flow. Second operand 8 states and 134 transitions. [2024-11-16 19:19:01,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 115 transitions, 854 flow [2024-11-16 19:19:01,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 115 transitions, 778 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-11-16 19:19:01,024 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 416 flow [2024-11-16 19:19:01,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=416, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2024-11-16 19:19:01,025 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 42 predicate places. [2024-11-16 19:19:01,026 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 416 flow [2024-11-16 19:19:01,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:19:01,027 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:19:01,027 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:19:01,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 19:19:01,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:19:01,228 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:19:01,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:19:01,229 INFO L85 PathProgramCache]: Analyzing trace with hash -280994700, now seen corresponding path program 4 times [2024-11-16 19:19:01,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:19:01,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190258655] [2024-11-16 19:19:01,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:19:01,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:19:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:19:01,404 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-16 19:19:01,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:19:01,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190258655] [2024-11-16 19:19:01,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190258655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:19:01,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357932801] [2024-11-16 19:19:01,405 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:19:01,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:19:01,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:19:01,407 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:19:01,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 19:19:01,539 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:19:01,539 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:19:01,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:19:01,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:19:01,652 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-16 19:19:01,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:19:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-16 19:19:01,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357932801] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:19:01,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:19:01,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-16 19:19:01,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420373681] [2024-11-16 19:19:01,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:19:01,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:19:01,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:19:01,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:19:01,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:19:01,804 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-16 19:19:01,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 416 flow. Second operand has 13 states, 13 states have (on average 12.153846153846153) internal successors, (158), 13 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:19:01,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:19:01,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-16 19:19:01,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:19:02,329 INFO L124 PetriNetUnfolderBase]: 907/2507 cut-off events. [2024-11-16 19:19:02,329 INFO L125 PetriNetUnfolderBase]: For 21592/21624 co-relation queries the response was YES. [2024-11-16 19:19:02,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8986 conditions, 2507 events. 907/2507 cut-off events. For 21592/21624 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 14593 event pairs, 89 based on Foata normal form. 166/2665 useless extension candidates. Maximal degree in co-relation 8962. Up to 373 conditions per place. [2024-11-16 19:19:02,349 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 197 selfloop transitions, 36 changer transitions 0/239 dead transitions. [2024-11-16 19:19:02,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 239 transitions, 2350 flow [2024-11-16 19:19:02,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:19:02,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:19:02,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 214 transitions. [2024-11-16 19:19:02,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6149425287356322 [2024-11-16 19:19:02,352 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 416 flow. Second operand 12 states and 214 transitions. [2024-11-16 19:19:02,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 239 transitions, 2350 flow [2024-11-16 19:19:02,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 239 transitions, 2106 flow, removed 88 selfloop flow, removed 2 redundant places. [2024-11-16 19:19:02,387 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 644 flow [2024-11-16 19:19:02,389 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=644, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2024-11-16 19:19:02,390 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 58 predicate places. [2024-11-16 19:19:02,390 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 644 flow [2024-11-16 19:19:02,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.153846153846153) internal successors, (158), 13 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:19:02,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:19:02,393 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 10, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:19:02,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 19:19:02,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:19:02,594 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:19:02,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:19:02,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1920478074, now seen corresponding path program 5 times [2024-11-16 19:19:02,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:19:02,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863990131] [2024-11-16 19:19:02,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:19:02,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:19:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:19:02,882 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 20 proven. 102 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2024-11-16 19:19:02,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:19:02,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863990131] [2024-11-16 19:19:02,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863990131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:19:02,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018948982] [2024-11-16 19:19:02,883 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:19:02,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:19:02,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:19:02,885 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:19:02,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 19:19:03,054 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-16 19:19:03,055 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:19:03,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 19:19:03,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:19:03,130 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 20 proven. 102 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2024-11-16 19:19:03,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:19:03,291 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 20 proven. 102 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2024-11-16 19:19:03,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018948982] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:19:03,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:19:03,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-16 19:19:03,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594345155] [2024-11-16 19:19:03,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:19:03,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 19:19:03,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:19:03,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 19:19:03,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-16 19:19:03,312 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-16 19:19:03,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 644 flow. Second operand has 17 states, 17 states have (on average 11.823529411764707) internal successors, (201), 17 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:19:03,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:19:03,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-16 19:19:03,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:19:04,467 INFO L124 PetriNetUnfolderBase]: 2006/5320 cut-off events. [2024-11-16 19:19:04,468 INFO L125 PetriNetUnfolderBase]: For 44631/44762 co-relation queries the response was YES. [2024-11-16 19:19:04,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19602 conditions, 5320 events. 2006/5320 cut-off events. For 44631/44762 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 33132 event pairs, 196 based on Foata normal form. 455/5709 useless extension candidates. Maximal degree in co-relation 19571. Up to 814 conditions per place. [2024-11-16 19:19:04,515 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 273 selfloop transitions, 28 changer transitions 0/312 dead transitions. [2024-11-16 19:19:04,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 312 transitions, 2866 flow [2024-11-16 19:19:04,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 19:19:04,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-16 19:19:04,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 274 transitions. [2024-11-16 19:19:04,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5905172413793104 [2024-11-16 19:19:04,518 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 644 flow. Second operand 16 states and 274 transitions. [2024-11-16 19:19:04,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 312 transitions, 2866 flow [2024-11-16 19:19:04,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 312 transitions, 2776 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-16 19:19:04,556 INFO L231 Difference]: Finished difference. Result has 104 places, 87 transitions, 842 flow [2024-11-16 19:19:04,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=842, PETRI_PLACES=104, PETRI_TRANSITIONS=87} [2024-11-16 19:19:04,558 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 79 predicate places. [2024-11-16 19:19:04,559 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 87 transitions, 842 flow [2024-11-16 19:19:04,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.823529411764707) internal successors, (201), 17 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:19:04,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:19:04,560 INFO L204 CegarLoopForPetriNet]: trace histogram [15, 14, 14, 14, 14, 14, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:19:04,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 19:19:04,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:19:04,765 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:19:04,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:19:04,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1318158494, now seen corresponding path program 6 times [2024-11-16 19:19:04,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:19:04,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976289264] [2024-11-16 19:19:04,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:19:04,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:19:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:19:05,248 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 357 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2024-11-16 19:19:05,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:19:05,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976289264] [2024-11-16 19:19:05,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976289264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:19:05,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317322774] [2024-11-16 19:19:05,249 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:19:05,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:19:05,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:19:05,251 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:19:05,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 19:19:05,481 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-16 19:19:05,481 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:19:05,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 19:19:05,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:19:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 357 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2024-11-16 19:19:05,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:19:06,009 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 357 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2024-11-16 19:19:06,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317322774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:19:06,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:19:06,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2024-11-16 19:19:06,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309540225] [2024-11-16 19:19:06,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:19:06,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-16 19:19:06,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:19:06,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-16 19:19:06,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-11-16 19:19:06,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-16 19:19:06,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 87 transitions, 842 flow. Second operand has 23 states, 23 states have (on average 12.565217391304348) internal successors, (289), 23 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:19:06,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:19:06,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-16 19:19:06,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:19:08,402 INFO L124 PetriNetUnfolderBase]: 3743/10157 cut-off events. [2024-11-16 19:19:08,403 INFO L125 PetriNetUnfolderBase]: For 153929/153977 co-relation queries the response was YES. [2024-11-16 19:19:08,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41421 conditions, 10157 events. 3743/10157 cut-off events. For 153929/153977 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 71524 event pairs, 167 based on Foata normal form. 594/10742 useless extension candidates. Maximal degree in co-relation 41381. Up to 1575 conditions per place. [2024-11-16 19:19:08,468 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 565 selfloop transitions, 66 changer transitions 0/638 dead transitions. [2024-11-16 19:19:08,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 638 transitions, 8372 flow [2024-11-16 19:19:08,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 19:19:08,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-16 19:19:08,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 398 transitions. [2024-11-16 19:19:08,470 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6238244514106583 [2024-11-16 19:19:08,470 INFO L175 Difference]: Start difference. First operand has 104 places, 87 transitions, 842 flow. Second operand 22 states and 398 transitions. [2024-11-16 19:19:08,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 638 transitions, 8372 flow [2024-11-16 19:19:08,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 638 transitions, 8082 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-16 19:19:08,609 INFO L231 Difference]: Finished difference. Result has 131 places, 120 transitions, 1372 flow [2024-11-16 19:19:08,610 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1372, PETRI_PLACES=131, PETRI_TRANSITIONS=120} [2024-11-16 19:19:08,612 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 106 predicate places. [2024-11-16 19:19:08,612 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 120 transitions, 1372 flow [2024-11-16 19:19:08,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.565217391304348) internal successors, (289), 23 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:19:08,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:19:08,614 INFO L204 CegarLoopForPetriNet]: trace histogram [21, 20, 20, 20, 20, 20, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:19:08,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 19:19:08,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:19:08,818 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:19:08,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:19:08,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1799388534, now seen corresponding path program 7 times [2024-11-16 19:19:08,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:19:08,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35831389] [2024-11-16 19:19:08,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:19:08,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:19:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:19:09,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1754 backedges. 40 proven. 574 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2024-11-16 19:19:09,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:19:09,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35831389] [2024-11-16 19:19:09,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35831389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:19:09,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314197161] [2024-11-16 19:19:09,419 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 19:19:09,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:19:09,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:19:09,421 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:19:09,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 19:19:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:19:09,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 19:19:09,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:19:09,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1754 backedges. 40 proven. 574 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2024-11-16 19:19:09,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:19:10,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1754 backedges. 40 proven. 574 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2024-11-16 19:19:10,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314197161] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:19:10,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:19:10,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-11-16 19:19:10,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244240573] [2024-11-16 19:19:10,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:19:10,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-16 19:19:10,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:19:10,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-16 19:19:10,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-11-16 19:19:10,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-16 19:19:10,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 120 transitions, 1372 flow. Second operand has 23 states, 23 states have (on average 12.08695652173913) internal successors, (278), 23 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:19:10,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:19:10,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-16 19:19:10,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:19:12,805 INFO L124 PetriNetUnfolderBase]: 5376/14272 cut-off events. [2024-11-16 19:19:12,805 INFO L125 PetriNetUnfolderBase]: For 207719/208104 co-relation queries the response was YES. [2024-11-16 19:19:12,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60900 conditions, 14272 events. 5376/14272 cut-off events. For 207719/208104 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 102250 event pairs, 346 based on Foata normal form. 829/15005 useless extension candidates. Maximal degree in co-relation 60849. Up to 2184 conditions per place. [2024-11-16 19:19:13,082 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 591 selfloop transitions, 34 changer transitions 0/639 dead transitions. [2024-11-16 19:19:13,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 639 transitions, 7858 flow [2024-11-16 19:19:13,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 19:19:13,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-16 19:19:13,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 374 transitions. [2024-11-16 19:19:13,085 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-11-16 19:19:13,085 INFO L175 Difference]: Start difference. First operand has 131 places, 120 transitions, 1372 flow. Second operand 22 states and 374 transitions. [2024-11-16 19:19:13,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 639 transitions, 7858 flow [2024-11-16 19:19:13,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 639 transitions, 7480 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-16 19:19:13,249 INFO L231 Difference]: Finished difference. Result has 150 places, 127 transitions, 1538 flow [2024-11-16 19:19:13,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1538, PETRI_PLACES=150, PETRI_TRANSITIONS=127} [2024-11-16 19:19:13,250 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 125 predicate places. [2024-11-16 19:19:13,250 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 127 transitions, 1538 flow [2024-11-16 19:19:13,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.08695652173913) internal successors, (278), 23 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:19:13,251 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:19:13,251 INFO L204 CegarLoopForPetriNet]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:19:13,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 19:19:13,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:19:13,451 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:19:13,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:19:13,452 INFO L85 PathProgramCache]: Analyzing trace with hash 753255954, now seen corresponding path program 8 times [2024-11-16 19:19:13,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:19:13,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486668399] [2024-11-16 19:19:13,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:19:13,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:19:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:19:16,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2360 backedges. 0 proven. 2360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:19:16,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:19:16,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486668399] [2024-11-16 19:19:16,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486668399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:19:16,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124149109] [2024-11-16 19:19:16,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:19:16,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:19:16,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:19:16,138 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:19:16,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 19:19:16,366 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:19:16,366 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:19:16,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-11-16 19:19:16,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:19:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2360 backedges. 0 proven. 2360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:19:16,718 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:19:17,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2360 backedges. 0 proven. 2360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:19:17,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124149109] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:19:17,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:19:17,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2024-11-16 19:19:17,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948285942] [2024-11-16 19:19:17,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:19:17,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-16 19:19:17,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:19:17,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-16 19:19:17,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2024-11-16 19:19:17,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-16 19:19:17,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 127 transitions, 1538 flow. Second operand has 45 states, 45 states have (on average 11.777777777777779) internal successors, (530), 45 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:19:17,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:19:17,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-16 19:19:17,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:19:29,163 INFO L124 PetriNetUnfolderBase]: 8690/26468 cut-off events. [2024-11-16 19:19:29,163 INFO L125 PetriNetUnfolderBase]: For 449145/449145 co-relation queries the response was YES. [2024-11-16 19:19:29,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132788 conditions, 26468 events. 8690/26468 cut-off events. For 449145/449145 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 234045 event pairs, 1104 based on Foata normal form. 1/26348 useless extension candidates. Maximal degree in co-relation 132730. Up to 4386 conditions per place. [2024-11-16 19:19:29,439 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 1764 selfloop transitions, 83 changer transitions 2/1868 dead transitions. [2024-11-16 19:19:29,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 1868 transitions, 26956 flow [2024-11-16 19:19:29,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-16 19:19:29,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-16 19:19:29,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 798 transitions. [2024-11-16 19:19:29,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6253918495297806 [2024-11-16 19:19:29,443 INFO L175 Difference]: Start difference. First operand has 150 places, 127 transitions, 1538 flow. Second operand 44 states and 798 transitions. [2024-11-16 19:19:29,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 1868 transitions, 26956 flow [2024-11-16 19:19:30,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 1868 transitions, 25829 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-11-16 19:19:30,377 INFO L231 Difference]: Finished difference. Result has 182 places, 209 transitions, 1834 flow [2024-11-16 19:19:30,377 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1492, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1834, PETRI_PLACES=182, PETRI_TRANSITIONS=209} [2024-11-16 19:19:30,378 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 157 predicate places. [2024-11-16 19:19:30,378 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 209 transitions, 1834 flow [2024-11-16 19:19:30,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 11.777777777777779) internal successors, (530), 45 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:19:30,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:19:30,379 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:19:30,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 19:19:30,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-16 19:19:30,580 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:19:30,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:19:30,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1266546714, now seen corresponding path program 9 times [2024-11-16 19:19:30,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:19:30,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033351257] [2024-11-16 19:19:30,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:19:30,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:19:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:19:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2482 backedges. 1186 proven. 175 refuted. 0 times theorem prover too weak. 1121 trivial. 0 not checked. [2024-11-16 19:19:31,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:19:31,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033351257] [2024-11-16 19:19:31,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033351257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:19:31,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69143998] [2024-11-16 19:19:31,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:19:31,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:19:31,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:19:31,364 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:19:31,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 19:19:31,894 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-11-16 19:19:31,894 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:19:31,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 19:19:31,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:19:32,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2482 backedges. 1361 proven. 0 refuted. 0 times theorem prover too weak. 1121 trivial. 0 not checked. [2024-11-16 19:19:32,165 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:19:32,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69143998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:19:32,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:19:32,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2024-11-16 19:19:32,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719614647] [2024-11-16 19:19:32,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:19:32,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-16 19:19:32,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:19:32,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-16 19:19:32,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2024-11-16 19:19:32,170 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-16 19:19:32,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 209 transitions, 1834 flow. Second operand has 23 states, 23 states have (on average 12.173913043478262) internal successors, (280), 23 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:19:32,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:19:32,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-16 19:19:32,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:19:37,362 INFO L124 PetriNetUnfolderBase]: 9233/23657 cut-off events. [2024-11-16 19:19:37,363 INFO L125 PetriNetUnfolderBase]: For 268115/268190 co-relation queries the response was YES. [2024-11-16 19:19:37,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109355 conditions, 23657 events. 9233/23657 cut-off events. For 268115/268190 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 196695 event pairs, 748 based on Foata normal form. 155/23668 useless extension candidates. Maximal degree in co-relation 109294. Up to 3989 conditions per place. [2024-11-16 19:19:37,684 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 2038 selfloop transitions, 63 changer transitions 0/2109 dead transitions. [2024-11-16 19:19:37,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 2109 transitions, 20008 flow [2024-11-16 19:19:37,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 19:19:37,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-16 19:19:37,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 401 transitions. [2024-11-16 19:19:37,686 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6011994002998501 [2024-11-16 19:19:37,686 INFO L175 Difference]: Start difference. First operand has 182 places, 209 transitions, 1834 flow. Second operand 23 states and 401 transitions. [2024-11-16 19:19:37,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 2109 transitions, 20008 flow [2024-11-16 19:19:38,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 2109 transitions, 20000 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-16 19:19:38,082 INFO L231 Difference]: Finished difference. Result has 201 places, 206 transitions, 1910 flow [2024-11-16 19:19:38,083 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1784, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1910, PETRI_PLACES=201, PETRI_TRANSITIONS=206} [2024-11-16 19:19:38,083 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 176 predicate places. [2024-11-16 19:19:38,083 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 206 transitions, 1910 flow [2024-11-16 19:19:38,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.173913043478262) internal successors, (280), 23 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:19:38,084 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:19:38,084 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:19:38,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-16 19:19:38,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:19:38,285 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:19:38,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:19:38,285 INFO L85 PathProgramCache]: Analyzing trace with hash -770636203, now seen corresponding path program 10 times [2024-11-16 19:19:38,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:19:38,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441119515] [2024-11-16 19:19:38,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:19:38,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:19:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:19:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2482 backedges. 1186 proven. 116 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2024-11-16 19:19:39,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:19:39,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441119515] [2024-11-16 19:19:39,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441119515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:19:39,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988040646] [2024-11-16 19:19:39,217 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:19:39,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:19:39,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:19:39,219 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:19:39,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 19:19:39,558 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:19:39,558 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:19:39,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 19:19:39,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:19:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2482 backedges. 1302 proven. 0 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2024-11-16 19:19:39,731 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:19:39,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988040646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:19:39,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:19:39,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2024-11-16 19:19:39,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185943200] [2024-11-16 19:19:39,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:19:39,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-16 19:19:39,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:19:39,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-16 19:19:39,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2024-11-16 19:19:39,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-16 19:19:39,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 206 transitions, 1910 flow. Second operand has 23 states, 23 states have (on average 12.130434782608695) internal successors, (279), 23 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:19:39,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:19:39,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-16 19:19:39,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:19:42,447 INFO L124 PetriNetUnfolderBase]: 5286/13775 cut-off events. [2024-11-16 19:19:42,448 INFO L125 PetriNetUnfolderBase]: For 151355/151752 co-relation queries the response was YES. [2024-11-16 19:19:42,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65208 conditions, 13775 events. 5286/13775 cut-off events. For 151355/151752 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 99097 event pairs, 534 based on Foata normal form. 405/13970 useless extension candidates. Maximal degree in co-relation 65148. Up to 2184 conditions per place. [2024-11-16 19:19:42,514 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 0 selfloop transitions, 0 changer transitions 1494/1494 dead transitions. [2024-11-16 19:19:42,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 1494 transitions, 13773 flow [2024-11-16 19:19:42,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 19:19:42,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-16 19:19:42,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 378 transitions. [2024-11-16 19:19:42,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5667166416791605 [2024-11-16 19:19:42,517 INFO L175 Difference]: Start difference. First operand has 201 places, 206 transitions, 1910 flow. Second operand 23 states and 378 transitions. [2024-11-16 19:19:42,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 1494 transitions, 13773 flow [2024-11-16 19:19:42,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 1494 transitions, 12861 flow, removed 0 selfloop flow, removed 24 redundant places. [2024-11-16 19:19:42,652 INFO L231 Difference]: Finished difference. Result has 196 places, 0 transitions, 0 flow [2024-11-16 19:19:42,653 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1738, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=196, PETRI_TRANSITIONS=0} [2024-11-16 19:19:42,653 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 171 predicate places. [2024-11-16 19:19:42,653 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 0 transitions, 0 flow [2024-11-16 19:19:42,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.130434782608695) internal successors, (279), 23 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:19:42,656 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-16 19:19:42,656 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-11-16 19:19:42,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 19:19:42,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-16 19:19:42,857 INFO L407 BasicCegarLoop]: Path program histogram: [10, 1, 1, 1] [2024-11-16 19:19:42,860 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-16 19:19:42,860 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 19:19:42,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 07:19:42 BasicIcfg [2024-11-16 19:19:42,864 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 19:19:42,864 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 19:19:42,864 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 19:19:42,865 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 19:19:42,865 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:18:57" (3/4) ... [2024-11-16 19:19:42,867 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 19:19:42,871 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread_function_mutex [2024-11-16 19:19:42,875 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2024-11-16 19:19:42,876 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-11-16 19:19:42,876 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-16 19:19:42,876 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-16 19:19:42,964 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 19:19:42,965 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 19:19:42,965 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 19:19:42,965 INFO L158 Benchmark]: Toolchain (without parser) took 46502.88ms. Allocated memory was 163.6MB in the beginning and 8.3GB in the end (delta: 8.1GB). Free memory was 127.1MB in the beginning and 6.8GB in the end (delta: -6.7GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-11-16 19:19:42,966 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory was 82.1MB in the beginning and 82.0MB in the end (delta: 118.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 19:19:42,966 INFO L158 Benchmark]: CACSL2BoogieTranslator took 770.24ms. Allocated memory is still 163.6MB. Free memory was 127.1MB in the beginning and 85.3MB in the end (delta: 41.8MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-11-16 19:19:42,966 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.21ms. Allocated memory is still 163.6MB. Free memory was 85.3MB in the beginning and 83.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 19:19:42,966 INFO L158 Benchmark]: Boogie Preprocessor took 48.77ms. Allocated memory is still 163.6MB. Free memory was 83.2MB in the beginning and 81.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 19:19:42,967 INFO L158 Benchmark]: IcfgBuilder took 505.12ms. Allocated memory is still 163.6MB. Free memory was 81.0MB in the beginning and 59.0MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-16 19:19:42,967 INFO L158 Benchmark]: TraceAbstraction took 45012.93ms. Allocated memory was 163.6MB in the beginning and 8.3GB in the end (delta: 8.1GB). Free memory was 58.1MB in the beginning and 6.8GB in the end (delta: -6.8GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2024-11-16 19:19:42,967 INFO L158 Benchmark]: Witness Printer took 100.48ms. Allocated memory is still 8.3GB. Free memory was 6.8GB in the beginning and 6.8GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-16 19:19:42,969 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory was 82.1MB in the beginning and 82.0MB in the end (delta: 118.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 770.24ms. Allocated memory is still 163.6MB. Free memory was 127.1MB in the beginning and 85.3MB in the end (delta: 41.8MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.21ms. Allocated memory is still 163.6MB. Free memory was 85.3MB in the beginning and 83.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.77ms. Allocated memory is still 163.6MB. Free memory was 83.2MB in the beginning and 81.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 505.12ms. Allocated memory is still 163.6MB. Free memory was 81.0MB in the beginning and 59.0MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 45012.93ms. Allocated memory was 163.6MB in the beginning and 8.3GB in the end (delta: 8.1GB). Free memory was 58.1MB in the beginning and 6.8GB in the end (delta: -6.8GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Witness Printer took 100.48ms. Allocated memory is still 8.3GB. Free memory was 6.8GB in the beginning and 6.8GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 35 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 44.9s, OverallIterations: 13, TraceHistogramMax: 22, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 30.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1409 SdHoareTripleChecker+Valid, 7.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1390 mSDsluCounter, 33 SdHoareTripleChecker+Invalid, 6.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21374 IncrementalHoareTripleChecker+Invalid, 21430 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 16 mSDtfsCounter, 21374 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2459 GetRequests, 2264 SyntacticMatches, 13 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1910occurred in iteration=12, InterpolantAutomatonStates: 197, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 2889 NumberOfCodeBlocks, 2871 NumberOfCodeBlocksAsserted, 74 NumberOfCheckSat, 3742 ConstructedInterpolants, 0 QuantifiedInterpolants, 9043 SizeOfPredicates, 22 NumberOfNonLiveVariables, 5246 ConjunctsInSsa, 220 ConjunctsInUnsatCore, 30 InterpolantComputations, 6 PerfectInterpolantSequences, 16018/26658 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-16 19:19:42,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE