./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/triangular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/triangular-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 17:46:50,131 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 17:46:50,190 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 17:46:50,195 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 17:46:50,195 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 17:46:50,216 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 17:46:50,216 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 17:46:50,216 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 17:46:50,217 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 17:46:50,220 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 17:46:50,220 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 17:46:50,220 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 17:46:50,221 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 17:46:50,222 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 17:46:50,222 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 17:46:50,222 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 17:46:50,224 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 17:46:50,224 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 17:46:50,224 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 17:46:50,225 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 17:46:50,225 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 17:46:50,225 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 17:46:50,226 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 17:46:50,226 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 17:46:50,226 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 17:46:50,227 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 17:46:50,227 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 17:46:50,227 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 17:46:50,227 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 17:46:50,227 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 17:46:50,228 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 17:46:50,228 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 17:46:50,228 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 17:46:50,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:46:50,228 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 17:46:50,229 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 17:46:50,229 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 17:46:50,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 17:46:50,230 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 17:46:50,230 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 17:46:50,230 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 17:46:50,230 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 17:46:50,230 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd [2024-11-10 17:46:50,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 17:46:50,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 17:46:50,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 17:46:50,472 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 17:46:50,473 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 17:46:50,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-1.i [2024-11-10 17:46:51,678 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 17:46:51,848 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 17:46:51,848 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-1.i [2024-11-10 17:46:51,864 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73e3f8bbb/bf97f658c5064c4b81a78c2f10cc1b68/FLAG1531cfaab [2024-11-10 17:46:52,228 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73e3f8bbb/bf97f658c5064c4b81a78c2f10cc1b68 [2024-11-10 17:46:52,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 17:46:52,231 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 17:46:52,232 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 17:46:52,232 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 17:46:52,236 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 17:46:52,236 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:46:52" (1/1) ... [2024-11-10 17:46:52,237 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@290c6d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:46:52, skipping insertion in model container [2024-11-10 17:46:52,237 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:46:52" (1/1) ... [2024-11-10 17:46:52,276 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 17:46:52,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:46:52,565 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 17:46:52,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:46:52,635 INFO L204 MainTranslator]: Completed translation [2024-11-10 17:46:52,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:46:52 WrapperNode [2024-11-10 17:46:52,636 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 17:46:52,637 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 17:46:52,637 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 17:46:52,637 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 17:46:52,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:46:52" (1/1) ... [2024-11-10 17:46:52,656 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:46:52" (1/1) ... [2024-11-10 17:46:52,671 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2024-11-10 17:46:52,672 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 17:46:52,673 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 17:46:52,673 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 17:46:52,673 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 17:46:52,680 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:46:52" (1/1) ... [2024-11-10 17:46:52,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:46:52" (1/1) ... [2024-11-10 17:46:52,683 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:46:52" (1/1) ... [2024-11-10 17:46:52,697 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-10 17:46:52,697 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:46:52" (1/1) ... [2024-11-10 17:46:52,697 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:46:52" (1/1) ... [2024-11-10 17:46:52,701 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:46:52" (1/1) ... [2024-11-10 17:46:52,704 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:46:52" (1/1) ... [2024-11-10 17:46:52,705 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:46:52" (1/1) ... [2024-11-10 17:46:52,706 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:46:52" (1/1) ... [2024-11-10 17:46:52,707 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 17:46:52,708 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 17:46:52,708 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 17:46:52,708 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 17:46:52,709 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:46:52" (1/1) ... [2024-11-10 17:46:52,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:46:52,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:46:52,739 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) [2024-11-10 17:46:52,742 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 [2024-11-10 17:46:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-10 17:46:52,779 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-10 17:46:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-10 17:46:52,779 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-10 17:46:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 17:46:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 17:46:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 17:46:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 17:46:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 17:46:52,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 17:46:52,781 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 17:46:52,891 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 17:46:52,893 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 17:46:52,991 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 17:46:52,992 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 17:46:53,063 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 17:46:53,063 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 17:46:53,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:46:53 BoogieIcfgContainer [2024-11-10 17:46:53,064 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 17:46:53,065 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 17:46:53,065 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 17:46:53,068 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 17:46:53,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:46:52" (1/3) ... [2024-11-10 17:46:53,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e6f7e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:46:53, skipping insertion in model container [2024-11-10 17:46:53,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:46:52" (2/3) ... [2024-11-10 17:46:53,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e6f7e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:46:53, skipping insertion in model container [2024-11-10 17:46:53,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:46:53" (3/3) ... [2024-11-10 17:46:53,070 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2024-11-10 17:46:53,082 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 17:46:53,082 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 17:46:53,082 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 17:46:53,109 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 17:46:53,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 35 transitions, 78 flow [2024-11-10 17:46:53,160 INFO L124 PetriNetUnfolderBase]: 6/33 cut-off events. [2024-11-10 17:46:53,160 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:46:53,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 33 events. 6/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-10 17:46:53,163 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 35 transitions, 78 flow [2024-11-10 17:46:53,166 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 33 transitions, 72 flow [2024-11-10 17:46:53,174 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:46:53,178 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3383547c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:46:53,178 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 17:46:53,186 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:46:53,186 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2024-11-10 17:46:53,186 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:46:53,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:46:53,189 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:46:53,189 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 17:46:53,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:46:53,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1743452533, now seen corresponding path program 1 times [2024-11-10 17:46:53,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:46:53,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776078875] [2024-11-10 17:46:53,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:46:53,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:46:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:46:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:46:53,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:46:53,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776078875] [2024-11-10 17:46:53,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776078875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:46:53,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:46:53,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 17:46:53,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986558160] [2024-11-10 17:46:53,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:46:53,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:46:53,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:46:53,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:46:53,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:46:53,408 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-11-10 17:46:53,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:53,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:46:53,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-11-10 17:46:53,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:46:53,503 INFO L124 PetriNetUnfolderBase]: 217/401 cut-off events. [2024-11-10 17:46:53,504 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:46:53,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 401 events. 217/401 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1969 event pairs, 159 based on Foata normal form. 90/466 useless extension candidates. Maximal degree in co-relation 743. Up to 338 conditions per place. [2024-11-10 17:46:53,509 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 15 selfloop transitions, 1 changer transitions 2/27 dead transitions. [2024-11-10 17:46:53,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 96 flow [2024-11-10 17:46:53,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:46:53,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:46:53,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-11-10 17:46:53,518 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-11-10 17:46:53,519 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 72 flow. Second operand 3 states and 56 transitions. [2024-11-10 17:46:53,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 96 flow [2024-11-10 17:46:53,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 94 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 17:46:53,522 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 56 flow [2024-11-10 17:46:53,524 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2024-11-10 17:46:53,528 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2024-11-10 17:46:53,528 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 56 flow [2024-11-10 17:46:53,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:53,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:46:53,529 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:46:53,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 17:46:53,529 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 17:46:53,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:46:53,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1743452893, now seen corresponding path program 1 times [2024-11-10 17:46:53,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:46:53,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751657438] [2024-11-10 17:46:53,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:46:53,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:46:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:46:53,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:46:53,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:46:53,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751657438] [2024-11-10 17:46:53,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751657438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:46:53,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:46:53,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:46:53,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594315210] [2024-11-10 17:46:53,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:46:53,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 17:46:53,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:46:53,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 17:46:53,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 17:46:53,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-11-10 17:46:53,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:53,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:46:53,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-11-10 17:46:53,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:46:53,889 INFO L124 PetriNetUnfolderBase]: 273/525 cut-off events. [2024-11-10 17:46:53,889 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:46:53,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 525 events. 273/525 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2612 event pairs, 45 based on Foata normal form. 0/468 useless extension candidates. Maximal degree in co-relation 959. Up to 181 conditions per place. [2024-11-10 17:46:53,895 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 25 selfloop transitions, 4 changer transitions 20/57 dead transitions. [2024-11-10 17:46:53,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 57 transitions, 218 flow [2024-11-10 17:46:53,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 17:46:53,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 17:46:53,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-11-10 17:46:53,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2024-11-10 17:46:53,899 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 56 flow. Second operand 6 states and 117 transitions. [2024-11-10 17:46:53,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 57 transitions, 218 flow [2024-11-10 17:46:53,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 57 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 17:46:53,901 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 82 flow [2024-11-10 17:46:53,901 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=82, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2024-11-10 17:46:53,902 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2024-11-10 17:46:53,902 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 82 flow [2024-11-10 17:46:53,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:53,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:46:53,902 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:46:53,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 17:46:53,903 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 17:46:53,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:46:53,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1838742358, now seen corresponding path program 1 times [2024-11-10 17:46:53,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:46:53,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213955819] [2024-11-10 17:46:53,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:46:53,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:46:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:46:54,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:46:54,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:46:54,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213955819] [2024-11-10 17:46:54,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213955819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:46:54,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:46:54,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 17:46:54,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895748869] [2024-11-10 17:46:54,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:46:54,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 17:46:54,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:46:54,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 17:46:54,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:46:54,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-11-10 17:46:54,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:54,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:46:54,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-11-10 17:46:54,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:46:54,277 INFO L124 PetriNetUnfolderBase]: 382/800 cut-off events. [2024-11-10 17:46:54,277 INFO L125 PetriNetUnfolderBase]: For 273/282 co-relation queries the response was YES. [2024-11-10 17:46:54,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1698 conditions, 800 events. 382/800 cut-off events. For 273/282 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4461 event pairs, 65 based on Foata normal form. 33/763 useless extension candidates. Maximal degree in co-relation 1687. Up to 246 conditions per place. [2024-11-10 17:46:54,283 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 46 selfloop transitions, 9 changer transitions 20/83 dead transitions. [2024-11-10 17:46:54,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 83 transitions, 390 flow [2024-11-10 17:46:54,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 17:46:54,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 17:46:54,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-11-10 17:46:54,288 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-10 17:46:54,288 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 82 flow. Second operand 9 states and 171 transitions. [2024-11-10 17:46:54,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 83 transitions, 390 flow [2024-11-10 17:46:54,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 83 transitions, 374 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-10 17:46:54,293 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 167 flow [2024-11-10 17:46:54,293 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=167, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2024-11-10 17:46:54,294 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2024-11-10 17:46:54,294 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 167 flow [2024-11-10 17:46:54,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:54,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:46:54,295 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:46:54,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 17:46:54,296 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 17:46:54,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:46:54,296 INFO L85 PathProgramCache]: Analyzing trace with hash 142093728, now seen corresponding path program 2 times [2024-11-10 17:46:54,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:46:54,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827980393] [2024-11-10 17:46:54,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:46:54,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:46:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:46:54,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:46:54,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:46:54,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827980393] [2024-11-10 17:46:54,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827980393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:46:54,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:46:54,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 17:46:54,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990597246] [2024-11-10 17:46:54,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:46:54,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 17:46:54,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:46:54,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 17:46:54,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:46:54,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-11-10 17:46:54,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 167 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:54,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:46:54,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-11-10 17:46:54,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:46:54,566 INFO L124 PetriNetUnfolderBase]: 328/701 cut-off events. [2024-11-10 17:46:54,566 INFO L125 PetriNetUnfolderBase]: For 997/1021 co-relation queries the response was YES. [2024-11-10 17:46:54,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1831 conditions, 701 events. 328/701 cut-off events. For 997/1021 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3911 event pairs, 65 based on Foata normal form. 63/697 useless extension candidates. Maximal degree in co-relation 1813. Up to 234 conditions per place. [2024-11-10 17:46:54,569 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 38 selfloop transitions, 9 changer transitions 28/83 dead transitions. [2024-11-10 17:46:54,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 83 transitions, 507 flow [2024-11-10 17:46:54,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 17:46:54,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 17:46:54,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-11-10 17:46:54,570 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5392857142857143 [2024-11-10 17:46:54,570 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 167 flow. Second operand 8 states and 151 transitions. [2024-11-10 17:46:54,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 83 transitions, 507 flow [2024-11-10 17:46:54,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 83 transitions, 499 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-10 17:46:54,577 INFO L231 Difference]: Finished difference. Result has 55 places, 38 transitions, 221 flow [2024-11-10 17:46:54,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=221, PETRI_PLACES=55, PETRI_TRANSITIONS=38} [2024-11-10 17:46:54,578 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2024-11-10 17:46:54,578 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 38 transitions, 221 flow [2024-11-10 17:46:54,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:54,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:46:54,579 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:46:54,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 17:46:54,579 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 17:46:54,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:46:54,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1794957727, now seen corresponding path program 1 times [2024-11-10 17:46:54,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:46:54,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153831870] [2024-11-10 17:46:54,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:46:54,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:46:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:46:54,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:46:54,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:46:54,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153831870] [2024-11-10 17:46:54,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153831870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:46:54,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:46:54,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 17:46:54,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506763443] [2024-11-10 17:46:54,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:46:54,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 17:46:54,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:46:54,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 17:46:54,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-10 17:46:54,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-11-10 17:46:54,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 38 transitions, 221 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:54,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:46:54,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-11-10 17:46:54,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:46:54,874 INFO L124 PetriNetUnfolderBase]: 337/713 cut-off events. [2024-11-10 17:46:54,874 INFO L125 PetriNetUnfolderBase]: For 1673/1697 co-relation queries the response was YES. [2024-11-10 17:46:54,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2039 conditions, 713 events. 337/713 cut-off events. For 1673/1697 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3981 event pairs, 74 based on Foata normal form. 36/679 useless extension candidates. Maximal degree in co-relation 2016. Up to 237 conditions per place. [2024-11-10 17:46:54,877 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 46 selfloop transitions, 16 changer transitions 24/94 dead transitions. [2024-11-10 17:46:54,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 94 transitions, 618 flow [2024-11-10 17:46:54,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 17:46:54,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 17:46:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-11-10 17:46:54,879 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.522077922077922 [2024-11-10 17:46:54,879 INFO L175 Difference]: Start difference. First operand has 55 places, 38 transitions, 221 flow. Second operand 11 states and 201 transitions. [2024-11-10 17:46:54,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 94 transitions, 618 flow [2024-11-10 17:46:54,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 94 transitions, 551 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-10 17:46:54,884 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 290 flow [2024-11-10 17:46:54,884 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=290, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2024-11-10 17:46:54,885 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 26 predicate places. [2024-11-10 17:46:54,885 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 290 flow [2024-11-10 17:46:54,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:54,885 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:46:54,885 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:46:54,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 17:46:54,885 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 17:46:54,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:46:54,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1216712241, now seen corresponding path program 2 times [2024-11-10 17:46:54,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:46:54,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406228520] [2024-11-10 17:46:54,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:46:54,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:46:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:46:54,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:46:54,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:46:54,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406228520] [2024-11-10 17:46:54,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406228520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:46:54,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:46:54,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 17:46:54,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9458887] [2024-11-10 17:46:54,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:46:54,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 17:46:54,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:46:54,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 17:46:54,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-10 17:46:54,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-11-10 17:46:54,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 290 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:54,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:46:54,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-11-10 17:46:54,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:46:55,159 INFO L124 PetriNetUnfolderBase]: 409/866 cut-off events. [2024-11-10 17:46:55,159 INFO L125 PetriNetUnfolderBase]: For 2337/2381 co-relation queries the response was YES. [2024-11-10 17:46:55,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2564 conditions, 866 events. 409/866 cut-off events. For 2337/2381 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4846 event pairs, 74 based on Foata normal form. 53/833 useless extension candidates. Maximal degree in co-relation 2540. Up to 220 conditions per place. [2024-11-10 17:46:55,163 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 43 selfloop transitions, 18 changer transitions 28/97 dead transitions. [2024-11-10 17:46:55,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 97 transitions, 696 flow [2024-11-10 17:46:55,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 17:46:55,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 17:46:55,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-11-10 17:46:55,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-11-10 17:46:55,165 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 290 flow. Second operand 10 states and 185 transitions. [2024-11-10 17:46:55,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 97 transitions, 696 flow [2024-11-10 17:46:55,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 97 transitions, 644 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-11-10 17:46:55,170 INFO L231 Difference]: Finished difference. Result has 69 places, 48 transitions, 358 flow [2024-11-10 17:46:55,170 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=358, PETRI_PLACES=69, PETRI_TRANSITIONS=48} [2024-11-10 17:46:55,171 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 35 predicate places. [2024-11-10 17:46:55,171 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 48 transitions, 358 flow [2024-11-10 17:46:55,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:55,172 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:46:55,172 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:46:55,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 17:46:55,172 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 17:46:55,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:46:55,173 INFO L85 PathProgramCache]: Analyzing trace with hash 93456875, now seen corresponding path program 1 times [2024-11-10 17:46:55,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:46:55,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685734563] [2024-11-10 17:46:55,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:46:55,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:46:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:46:55,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:46:55,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:46:55,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685734563] [2024-11-10 17:46:55,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685734563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:46:55,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119170535] [2024-11-10 17:46:55,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:46:55,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:46:55,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:46:55,271 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) [2024-11-10 17:46:55,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 17:46:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:46:55,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 17:46:55,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:46:55,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:46:55,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:46:55,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:46:55,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119170535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:46:55,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:46:55,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-10 17:46:55,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943520312] [2024-11-10 17:46:55,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:46:55,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 17:46:55,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:46:55,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 17:46:55,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-10 17:46:55,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-11-10 17:46:55,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 48 transitions, 358 flow. Second operand has 13 states, 13 states have (on average 13.153846153846153) internal successors, (171), 13 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:55,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:46:55,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-11-10 17:46:55,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:46:55,891 INFO L124 PetriNetUnfolderBase]: 625/1325 cut-off events. [2024-11-10 17:46:55,892 INFO L125 PetriNetUnfolderBase]: For 6383/6469 co-relation queries the response was YES. [2024-11-10 17:46:55,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4441 conditions, 1325 events. 625/1325 cut-off events. For 6383/6469 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7374 event pairs, 62 based on Foata normal form. 71/1277 useless extension candidates. Maximal degree in co-relation 4413. Up to 171 conditions per place. [2024-11-10 17:46:55,897 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 65 selfloop transitions, 33 changer transitions 56/162 dead transitions. [2024-11-10 17:46:55,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 162 transitions, 1334 flow [2024-11-10 17:46:55,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 17:46:55,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-10 17:46:55,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 350 transitions. [2024-11-10 17:46:55,899 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-11-10 17:46:55,899 INFO L175 Difference]: Start difference. First operand has 69 places, 48 transitions, 358 flow. Second operand 19 states and 350 transitions. [2024-11-10 17:46:55,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 162 transitions, 1334 flow [2024-11-10 17:46:55,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 162 transitions, 1272 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-11-10 17:46:55,906 INFO L231 Difference]: Finished difference. Result has 89 places, 64 transitions, 674 flow [2024-11-10 17:46:55,906 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=674, PETRI_PLACES=89, PETRI_TRANSITIONS=64} [2024-11-10 17:46:55,907 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 55 predicate places. [2024-11-10 17:46:55,907 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 64 transitions, 674 flow [2024-11-10 17:46:55,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.153846153846153) internal successors, (171), 13 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:55,907 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:46:55,907 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:46:55,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 17:46:56,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:46:56,109 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 17:46:56,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:46:56,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1327178531, now seen corresponding path program 1 times [2024-11-10 17:46:56,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:46:56,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842872834] [2024-11-10 17:46:56,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:46:56,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:46:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:46:56,257 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 17:46:56,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:46:56,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842872834] [2024-11-10 17:46:56,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842872834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:46:56,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864625562] [2024-11-10 17:46:56,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:46:56,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:46:56,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:46:56,259 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) [2024-11-10 17:46:56,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 17:46:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:46:56,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 17:46:56,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:46:56,390 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 17:46:56,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:46:56,537 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 17:46:56,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864625562] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:46:56,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:46:56,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-10 17:46:56,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402829216] [2024-11-10 17:46:56,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:46:56,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 17:46:56,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:46:56,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 17:46:56,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-10 17:46:56,541 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-11-10 17:46:56,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 64 transitions, 674 flow. Second operand has 17 states, 17 states have (on average 13.352941176470589) internal successors, (227), 17 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:56,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:46:56,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-11-10 17:46:56,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:46:57,078 INFO L124 PetriNetUnfolderBase]: 823/1859 cut-off events. [2024-11-10 17:46:57,079 INFO L125 PetriNetUnfolderBase]: For 16940/17084 co-relation queries the response was YES. [2024-11-10 17:46:57,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7122 conditions, 1859 events. 823/1859 cut-off events. For 16940/17084 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 10627 event pairs, 203 based on Foata normal form. 111/1761 useless extension candidates. Maximal degree in co-relation 7086. Up to 720 conditions per place. [2024-11-10 17:46:57,088 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 92 selfloop transitions, 25 changer transitions 89/214 dead transitions. [2024-11-10 17:46:57,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 214 transitions, 2244 flow [2024-11-10 17:46:57,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-10 17:46:57,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-10 17:46:57,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 451 transitions. [2024-11-10 17:46:57,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5154285714285715 [2024-11-10 17:46:57,090 INFO L175 Difference]: Start difference. First operand has 89 places, 64 transitions, 674 flow. Second operand 25 states and 451 transitions. [2024-11-10 17:46:57,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 214 transitions, 2244 flow [2024-11-10 17:46:57,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 214 transitions, 1757 flow, removed 229 selfloop flow, removed 10 redundant places. [2024-11-10 17:46:57,107 INFO L231 Difference]: Finished difference. Result has 117 places, 78 transitions, 749 flow [2024-11-10 17:46:57,107 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=749, PETRI_PLACES=117, PETRI_TRANSITIONS=78} [2024-11-10 17:46:57,108 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 83 predicate places. [2024-11-10 17:46:57,108 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 78 transitions, 749 flow [2024-11-10 17:46:57,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.352941176470589) internal successors, (227), 17 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:57,108 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:46:57,108 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:46:57,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 17:46:57,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-10 17:46:57,313 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 17:46:57,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:46:57,314 INFO L85 PathProgramCache]: Analyzing trace with hash -905964869, now seen corresponding path program 2 times [2024-11-10 17:46:57,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:46:57,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997554503] [2024-11-10 17:46:57,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:46:57,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:46:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:46:57,456 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 17:46:57,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:46:57,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997554503] [2024-11-10 17:46:57,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997554503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:46:57,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934054104] [2024-11-10 17:46:57,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 17:46:57,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:46:57,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:46:57,462 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) [2024-11-10 17:46:57,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 17:46:57,514 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 17:46:57,515 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 17:46:57,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 17:46:57,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:46:57,577 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 17:46:57,577 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:46:57,705 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 17:46:57,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934054104] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:46:57,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:46:57,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-10 17:46:57,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801162646] [2024-11-10 17:46:57,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:46:57,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 17:46:57,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:46:57,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 17:46:57,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-10 17:46:57,712 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-11-10 17:46:57,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 78 transitions, 749 flow. Second operand has 17 states, 17 states have (on average 13.352941176470589) internal successors, (227), 17 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:57,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:46:57,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-11-10 17:46:57,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:46:58,458 INFO L124 PetriNetUnfolderBase]: 1435/3269 cut-off events. [2024-11-10 17:46:58,459 INFO L125 PetriNetUnfolderBase]: For 60057/60537 co-relation queries the response was YES. [2024-11-10 17:46:58,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14441 conditions, 3269 events. 1435/3269 cut-off events. For 60057/60537 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 22861 event pairs, 138 based on Foata normal form. 135/3101 useless extension candidates. Maximal degree in co-relation 14391. Up to 484 conditions per place. [2024-11-10 17:46:58,479 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 127 selfloop transitions, 80 changer transitions 91/306 dead transitions. [2024-11-10 17:46:58,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 306 transitions, 3697 flow [2024-11-10 17:46:58,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-10 17:46:58,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-10 17:46:58,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 585 transitions. [2024-11-10 17:46:58,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5223214285714286 [2024-11-10 17:46:58,481 INFO L175 Difference]: Start difference. First operand has 117 places, 78 transitions, 749 flow. Second operand 32 states and 585 transitions. [2024-11-10 17:46:58,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 306 transitions, 3697 flow [2024-11-10 17:46:58,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 306 transitions, 3103 flow, removed 289 selfloop flow, removed 13 redundant places. [2024-11-10 17:46:58,558 INFO L231 Difference]: Finished difference. Result has 149 places, 124 transitions, 1536 flow [2024-11-10 17:46:58,558 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1536, PETRI_PLACES=149, PETRI_TRANSITIONS=124} [2024-11-10 17:46:58,559 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 115 predicate places. [2024-11-10 17:46:58,559 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 124 transitions, 1536 flow [2024-11-10 17:46:58,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.352941176470589) internal successors, (227), 17 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:58,559 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:46:58,559 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:46:58,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 17:46:58,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:46:58,760 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 17:46:58,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:46:58,761 INFO L85 PathProgramCache]: Analyzing trace with hash -147135067, now seen corresponding path program 3 times [2024-11-10 17:46:58,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:46:58,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922881052] [2024-11-10 17:46:58,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:46:58,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:46:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:46:58,892 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 17:46:58,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:46:58,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922881052] [2024-11-10 17:46:58,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922881052] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:46:58,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252507602] [2024-11-10 17:46:58,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 17:46:58,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:46:58,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:46:58,895 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) [2024-11-10 17:46:58,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 17:46:58,943 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-10 17:46:58,943 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 17:46:58,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 17:46:58,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:46:58,995 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 17:46:58,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:46:59,077 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 17:46:59,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252507602] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:46:59,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:46:59,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-10 17:46:59,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445083881] [2024-11-10 17:46:59,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:46:59,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 17:46:59,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:46:59,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 17:46:59,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2024-11-10 17:46:59,080 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-11-10 17:46:59,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 124 transitions, 1536 flow. Second operand has 17 states, 17 states have (on average 13.352941176470589) internal successors, (227), 17 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:59,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:46:59,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-11-10 17:46:59,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:47:00,185 INFO L124 PetriNetUnfolderBase]: 2029/4610 cut-off events. [2024-11-10 17:47:00,186 INFO L125 PetriNetUnfolderBase]: For 149816/150274 co-relation queries the response was YES. [2024-11-10 17:47:00,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23386 conditions, 4610 events. 2029/4610 cut-off events. For 149816/150274 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 34689 event pairs, 112 based on Foata normal form. 183/4369 useless extension candidates. Maximal degree in co-relation 23321. Up to 561 conditions per place. [2024-11-10 17:47:00,218 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 131 selfloop transitions, 127 changer transitions 113/379 dead transitions. [2024-11-10 17:47:00,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 379 transitions, 5687 flow [2024-11-10 17:47:00,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-10 17:47:00,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-10 17:47:00,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 640 transitions. [2024-11-10 17:47:00,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-11-10 17:47:00,220 INFO L175 Difference]: Start difference. First operand has 149 places, 124 transitions, 1536 flow. Second operand 35 states and 640 transitions. [2024-11-10 17:47:00,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 379 transitions, 5687 flow [2024-11-10 17:47:00,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 379 transitions, 4837 flow, removed 409 selfloop flow, removed 17 redundant places. [2024-11-10 17:47:00,436 INFO L231 Difference]: Finished difference. Result has 179 places, 171 transitions, 2455 flow [2024-11-10 17:47:00,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2455, PETRI_PLACES=179, PETRI_TRANSITIONS=171} [2024-11-10 17:47:00,436 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 145 predicate places. [2024-11-10 17:47:00,436 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 171 transitions, 2455 flow [2024-11-10 17:47:00,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.352941176470589) internal successors, (227), 17 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:47:00,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:47:00,437 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:47:00,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 17:47:00,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:47:00,638 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 17:47:00,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:47:00,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1540044795, now seen corresponding path program 4 times [2024-11-10 17:47:00,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:47:00,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957530272] [2024-11-10 17:47:00,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:47:00,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:47:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:47:00,775 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:47:00,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:47:00,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957530272] [2024-11-10 17:47:00,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957530272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:47:00,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769816678] [2024-11-10 17:47:00,775 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 17:47:00,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:47:00,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:47:00,777 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) [2024-11-10 17:47:00,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 17:47:00,830 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 17:47:00,830 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 17:47:00,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-10 17:47:00,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:47:00,913 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:47:00,914 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:47:01,074 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:47:01,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769816678] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:47:01,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:47:01,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-10 17:47:01,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390512126] [2024-11-10 17:47:01,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:47:01,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-10 17:47:01,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:47:01,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-10 17:47:01,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2024-11-10 17:47:01,080 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-11-10 17:47:01,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 171 transitions, 2455 flow. Second operand has 26 states, 26 states have (on average 13.038461538461538) internal successors, (339), 26 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:47:01,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:47:01,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-11-10 17:47:01,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:47:02,434 INFO L124 PetriNetUnfolderBase]: 2785/6161 cut-off events. [2024-11-10 17:47:02,434 INFO L125 PetriNetUnfolderBase]: For 279195/279602 co-relation queries the response was YES. [2024-11-10 17:47:02,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35520 conditions, 6161 events. 2785/6161 cut-off events. For 279195/279602 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 47446 event pairs, 113 based on Foata normal form. 188/5821 useless extension candidates. Maximal degree in co-relation 35443. Up to 804 conditions per place. [2024-11-10 17:47:02,492 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 131 selfloop transitions, 178 changer transitions 77/394 dead transitions. [2024-11-10 17:47:02,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 394 transitions, 7530 flow [2024-11-10 17:47:02,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-10 17:47:02,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-10 17:47:02,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 530 transitions. [2024-11-10 17:47:02,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5221674876847291 [2024-11-10 17:47:02,497 INFO L175 Difference]: Start difference. First operand has 179 places, 171 transitions, 2455 flow. Second operand 29 states and 530 transitions. [2024-11-10 17:47:02,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 394 transitions, 7530 flow [2024-11-10 17:47:03,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 394 transitions, 5803 flow, removed 835 selfloop flow, removed 19 redundant places. [2024-11-10 17:47:03,010 INFO L231 Difference]: Finished difference. Result has 194 places, 242 transitions, 3875 flow [2024-11-10 17:47:03,010 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1942, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3875, PETRI_PLACES=194, PETRI_TRANSITIONS=242} [2024-11-10 17:47:03,011 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 160 predicate places. [2024-11-10 17:47:03,011 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 242 transitions, 3875 flow [2024-11-10 17:47:03,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.038461538461538) internal successors, (339), 26 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:47:03,011 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:47:03,011 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:47:03,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 17:47:03,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-10 17:47:03,212 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 17:47:03,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:47:03,213 INFO L85 PathProgramCache]: Analyzing trace with hash -2032414391, now seen corresponding path program 5 times [2024-11-10 17:47:03,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:47:03,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940616384] [2024-11-10 17:47:03,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:47:03,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:47:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:47:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 69 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 17:47:03,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:47:03,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940616384] [2024-11-10 17:47:03,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940616384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:47:03,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795310393] [2024-11-10 17:47:03,301 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 17:47:03,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:47:03,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:47:03,302 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) [2024-11-10 17:47:03,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 17:47:03,356 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-10 17:47:03,356 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 17:47:03,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 17:47:03,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:47:03,420 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 17:47:03,420 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 17:47:03,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795310393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:47:03,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 17:47:03,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2024-11-10 17:47:03,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420766457] [2024-11-10 17:47:03,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:47:03,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 17:47:03,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:47:03,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 17:47:03,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-10 17:47:03,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-10 17:47:03,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 242 transitions, 3875 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:47:03,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:47:03,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-10 17:47:03,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:47:05,810 INFO L124 PetriNetUnfolderBase]: 8299/17052 cut-off events. [2024-11-10 17:47:05,811 INFO L125 PetriNetUnfolderBase]: For 343093/343455 co-relation queries the response was YES. [2024-11-10 17:47:05,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69601 conditions, 17052 events. 8299/17052 cut-off events. For 343093/343455 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 150395 event pairs, 385 based on Foata normal form. 66/15306 useless extension candidates. Maximal degree in co-relation 69517. Up to 3881 conditions per place. [2024-11-10 17:47:05,935 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 170 selfloop transitions, 7 changer transitions 723/906 dead transitions. [2024-11-10 17:47:05,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 906 transitions, 15505 flow [2024-11-10 17:47:05,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 17:47:05,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 17:47:05,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-11-10 17:47:05,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-10 17:47:05,936 INFO L175 Difference]: Start difference. First operand has 194 places, 242 transitions, 3875 flow. Second operand 8 states and 168 transitions. [2024-11-10 17:47:05,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 906 transitions, 15505 flow [2024-11-10 17:47:06,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 906 transitions, 12848 flow, removed 1214 selfloop flow, removed 15 redundant places. [2024-11-10 17:47:06,926 INFO L231 Difference]: Finished difference. Result has 185 places, 93 transitions, 964 flow [2024-11-10 17:47:06,927 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=964, PETRI_PLACES=185, PETRI_TRANSITIONS=93} [2024-11-10 17:47:06,927 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 151 predicate places. [2024-11-10 17:47:06,927 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 93 transitions, 964 flow [2024-11-10 17:47:06,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:47:06,927 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:47:06,927 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:47:06,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 17:47:07,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:47:07,128 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 17:47:07,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:47:07,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1576044309, now seen corresponding path program 6 times [2024-11-10 17:47:07,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:47:07,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752386861] [2024-11-10 17:47:07,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:47:07,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:47:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:47:07,207 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 61 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:47:07,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:47:07,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752386861] [2024-11-10 17:47:07,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752386861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:47:07,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628769724] [2024-11-10 17:47:07,208 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 17:47:07,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:47:07,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:47:07,209 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) [2024-11-10 17:47:07,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 17:47:07,264 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-10 17:47:07,265 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 17:47:07,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 17:47:07,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:47:07,311 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:47:07,311 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 17:47:07,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628769724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:47:07,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 17:47:07,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2024-11-10 17:47:07,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811687533] [2024-11-10 17:47:07,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:47:07,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 17:47:07,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:47:07,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 17:47:07,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-10 17:47:07,318 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-10 17:47:07,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 93 transitions, 964 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:47:07,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:47:07,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-10 17:47:07,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:47:07,591 INFO L124 PetriNetUnfolderBase]: 1497/3084 cut-off events. [2024-11-10 17:47:07,591 INFO L125 PetriNetUnfolderBase]: For 10854/10854 co-relation queries the response was YES. [2024-11-10 17:47:07,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10642 conditions, 3084 events. 1497/3084 cut-off events. For 10854/10854 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 19303 event pairs, 71 based on Foata normal form. 0/2860 useless extension candidates. Maximal degree in co-relation 10566. Up to 702 conditions per place. [2024-11-10 17:47:07,606 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 0 selfloop transitions, 0 changer transitions 298/298 dead transitions. [2024-11-10 17:47:07,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 298 transitions, 3702 flow [2024-11-10 17:47:07,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 17:47:07,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 17:47:07,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-11-10 17:47:07,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5107142857142857 [2024-11-10 17:47:07,607 INFO L175 Difference]: Start difference. First operand has 185 places, 93 transitions, 964 flow. Second operand 8 states and 143 transitions. [2024-11-10 17:47:07,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 298 transitions, 3702 flow [2024-11-10 17:47:07,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 298 transitions, 2457 flow, removed 124 selfloop flow, removed 59 redundant places. [2024-11-10 17:47:07,634 INFO L231 Difference]: Finished difference. Result has 106 places, 0 transitions, 0 flow [2024-11-10 17:47:07,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=106, PETRI_TRANSITIONS=0} [2024-11-10 17:47:07,635 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 72 predicate places. [2024-11-10 17:47:07,636 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 0 transitions, 0 flow [2024-11-10 17:47:07,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:47:07,638 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2024-11-10 17:47:07,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-10 17:47:07,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-10 17:47:07,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-10 17:47:07,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 17:47:07,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:47:07,840 INFO L407 BasicCegarLoop]: Path program histogram: [6, 2, 2, 1, 1, 1] [2024-11-10 17:47:07,843 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 17:47:07,843 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 17:47:07,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 05:47:07 BasicIcfg [2024-11-10 17:47:07,847 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 17:47:07,848 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 17:47:07,848 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 17:47:07,848 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 17:47:07,849 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:46:53" (3/4) ... [2024-11-10 17:47:07,850 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 17:47:07,853 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure t1 [2024-11-10 17:47:07,853 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure t2 [2024-11-10 17:47:07,856 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2024-11-10 17:47:07,857 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-10 17:47:07,857 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-10 17:47:07,857 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-10 17:47:07,920 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 17:47:07,921 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 17:47:07,921 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 17:47:07,921 INFO L158 Benchmark]: Toolchain (without parser) took 15690.14ms. Allocated memory was 176.2MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 117.9MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 645.4MB. Max. memory is 16.1GB. [2024-11-10 17:47:07,921 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 176.2MB. Free memory is still 136.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 17:47:07,922 INFO L158 Benchmark]: CACSL2BoogieTranslator took 404.32ms. Allocated memory is still 176.2MB. Free memory was 117.5MB in the beginning and 95.7MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-10 17:47:07,922 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.53ms. Allocated memory is still 176.2MB. Free memory was 95.7MB in the beginning and 94.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 17:47:07,922 INFO L158 Benchmark]: Boogie Preprocessor took 34.66ms. Allocated memory is still 176.2MB. Free memory was 94.0MB in the beginning and 91.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 17:47:07,922 INFO L158 Benchmark]: IcfgBuilder took 355.97ms. Allocated memory is still 176.2MB. Free memory was 91.9MB in the beginning and 132.3MB in the end (delta: -40.4MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2024-11-10 17:47:07,922 INFO L158 Benchmark]: TraceAbstraction took 14781.68ms. Allocated memory was 176.2MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 131.4MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 652.3MB. Max. memory is 16.1GB. [2024-11-10 17:47:07,923 INFO L158 Benchmark]: Witness Printer took 72.91ms. Allocated memory is still 2.3GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 17:47:07,924 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 176.2MB. Free memory is still 136.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 404.32ms. Allocated memory is still 176.2MB. Free memory was 117.5MB in the beginning and 95.7MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.53ms. Allocated memory is still 176.2MB. Free memory was 95.7MB in the beginning and 94.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.66ms. Allocated memory is still 176.2MB. Free memory was 94.0MB in the beginning and 91.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 355.97ms. Allocated memory is still 176.2MB. Free memory was 91.9MB in the beginning and 132.3MB in the end (delta: -40.4MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * TraceAbstraction took 14781.68ms. Allocated memory was 176.2MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 131.4MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 652.3MB. Max. memory is 16.1GB. * Witness Printer took 72.91ms. Allocated memory is still 2.3GB. Free memory was 1.6GB in the beginning and 1.6GB 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: 711]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 693]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 46 locations, 4 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: 14.7s, OverallIterations: 13, TraceHistogramMax: 6, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1974 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1969 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 116 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3003 IncrementalHoareTripleChecker+Invalid, 3119 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 116 mSolverCounterUnsat, 3 mSDtfsCounter, 3003 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 661 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2002 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3875occurred in iteration=11, InterpolantAutomatonStates: 203, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 640 NumberOfCodeBlocks, 640 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 785 ConstructedInterpolants, 0 QuantifiedInterpolants, 2841 SizeOfPredicates, 32 NumberOfNonLiveVariables, 844 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 25 InterpolantComputations, 8 PerfectInterpolantSequences, 337/760 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-10 17:47:07,945 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