./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/triangular-longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc 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-longer-2.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 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:20:37,070 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:20:37,182 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:20:37,190 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:20:37,194 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:20:37,251 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:20:37,251 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:20:37,252 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:20:37,266 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:20:37,266 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:20:37,266 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:20:37,266 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:20:37,267 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:20:37,267 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:20:37,268 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:20:37,268 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:20:37,268 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:20:37,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:20:37,269 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:20:37,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:20:37,273 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:20:37,273 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:20:37,273 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:20:37,273 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:20:37,273 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:20:37,274 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:20:37,274 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:20:37,274 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:20:37,274 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:20:37,274 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:20:37,274 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:20:37,275 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:20:37,275 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:20:37,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:20:37,275 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:20:37,275 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:20:37,275 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:20:37,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:20:37,275 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:20:37,276 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:20:37,276 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:20:37,277 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:20:37,277 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2024-11-19 09:20:37,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:20:37,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:20:37,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:20:37,572 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:20:37,573 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:20:37,574 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longer-2.i [2024-11-19 09:20:39,051 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:20:39,283 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:20:39,283 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-2.i [2024-11-19 09:20:39,299 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ade8cd61a/c2de1297727e49ceaff733e3582d1662/FLAG56a3f0411 [2024-11-19 09:20:39,311 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ade8cd61a/c2de1297727e49ceaff733e3582d1662 [2024-11-19 09:20:39,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:20:39,315 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:20:39,320 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:20:39,321 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:20:39,326 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:20:39,327 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:20:39" (1/1) ... [2024-11-19 09:20:39,328 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ad5e9e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:39, skipping insertion in model container [2024-11-19 09:20:39,328 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:20:39" (1/1) ... [2024-11-19 09:20:39,364 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:20:39,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:20:39,614 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:20:39,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:20:39,676 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:20:39,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:39 WrapperNode [2024-11-19 09:20:39,677 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:20:39,678 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:20:39,678 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:20:39,678 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:20:39,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:39" (1/1) ... [2024-11-19 09:20:39,705 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:39" (1/1) ... [2024-11-19 09:20:39,725 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2024-11-19 09:20:39,727 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:20:39,728 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:20:39,728 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:20:39,728 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:20:39,737 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:39" (1/1) ... [2024-11-19 09:20:39,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:39" (1/1) ... [2024-11-19 09:20:39,740 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:39" (1/1) ... [2024-11-19 09:20:39,762 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]. [2024-11-19 09:20:39,763 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:39" (1/1) ... [2024-11-19 09:20:39,763 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:39" (1/1) ... [2024-11-19 09:20:39,767 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:39" (1/1) ... [2024-11-19 09:20:39,774 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:39" (1/1) ... [2024-11-19 09:20:39,775 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:39" (1/1) ... [2024-11-19 09:20:39,776 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:39" (1/1) ... [2024-11-19 09:20:39,777 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:20:39,778 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:20:39,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:20:39,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:20:39,781 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:39" (1/1) ... [2024-11-19 09:20:39,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:20:39,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:20:39,817 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) [2024-11-19 09:20:39,820 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 [2024-11-19 09:20:39,888 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-19 09:20:39,889 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-19 09:20:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-19 09:20:39,889 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-19 09:20:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 09:20:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:20:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:20:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 09:20:39,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:20:39,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:20:39,896 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:20:40,089 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:20:40,091 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:20:40,188 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:20:40,188 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:20:40,294 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:20:40,295 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 09:20:40,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:20:40 BoogieIcfgContainer [2024-11-19 09:20:40,296 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:20:40,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:20:40,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:20:40,303 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:20:40,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:20:39" (1/3) ... [2024-11-19 09:20:40,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25647a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:20:40, skipping insertion in model container [2024-11-19 09:20:40,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:39" (2/3) ... [2024-11-19 09:20:40,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25647a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:20:40, skipping insertion in model container [2024-11-19 09:20:40,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:20:40" (3/3) ... [2024-11-19 09:20:40,307 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2024-11-19 09:20:40,323 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:20:40,323 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 09:20:40,323 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:20:40,362 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:20:40,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2024-11-19 09:20:40,421 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-19 09:20:40,421 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:20:40,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-19 09:20:40,425 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2024-11-19 09:20:40,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2024-11-19 09:20:40,444 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:20:40,455 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;@35d45c1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:20:40,455 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 09:20:40,465 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:20:40,468 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-11-19 09:20:40,468 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:20:40,468 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:40,469 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:40,469 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:40,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:40,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1038261642, now seen corresponding path program 1 times [2024-11-19 09:20:40,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:40,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859362222] [2024-11-19 09:20:40,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:40,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:40,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:40,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:40,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859362222] [2024-11-19 09:20:40,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859362222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:40,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:40,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:20:40,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285684662] [2024-11-19 09:20:40,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:40,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:20:40,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:40,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:20:40,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:20:40,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-19 09:20:40,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 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) [2024-11-19 09:20:40,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:40,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-19 09:20:40,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:40,744 INFO L124 PetriNetUnfolderBase]: 70/157 cut-off events. [2024-11-19 09:20:40,745 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 09:20:40,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 157 events. 70/157 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 554 event pairs, 44 based on Foata normal form. 15/161 useless extension candidates. Maximal degree in co-relation 272. Up to 113 conditions per place. [2024-11-19 09:20:40,748 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 11 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2024-11-19 09:20:40,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 78 flow [2024-11-19 09:20:40,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:20:40,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:20:40,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-19 09:20:40,765 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-11-19 09:20:40,767 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 52 transitions. [2024-11-19 09:20:40,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 78 flow [2024-11-19 09:20:40,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:20:40,770 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2024-11-19 09:20:40,772 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2024-11-19 09:20:40,774 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2024-11-19 09:20:40,775 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2024-11-19 09:20:40,775 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) [2024-11-19 09:20:40,775 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:40,775 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:40,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:20:40,776 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:40,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:40,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1038262774, now seen corresponding path program 1 times [2024-11-19 09:20:40,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:40,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668415605] [2024-11-19 09:20:40,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:40,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:40,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:40,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:40,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668415605] [2024-11-19 09:20:40,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668415605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:40,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:40,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:20:40,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584664033] [2024-11-19 09:20:40,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:40,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:20:40,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:40,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:20:40,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:20:40,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:40,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-11-19 09:20:40,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:40,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:40,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:41,233 INFO L124 PetriNetUnfolderBase]: 328/593 cut-off events. [2024-11-19 09:20:41,233 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:20:41,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1126 conditions, 593 events. 328/593 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2597 event pairs, 45 based on Foata normal form. 0/574 useless extension candidates. Maximal degree in co-relation 1120. Up to 243 conditions per place. [2024-11-19 09:20:41,238 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 29 selfloop transitions, 7 changer transitions 29/69 dead transitions. [2024-11-19 09:20:41,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 69 transitions, 274 flow [2024-11-19 09:20:41,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 09:20:41,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 09:20:41,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-11-19 09:20:41,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5646551724137931 [2024-11-19 09:20:41,243 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 8 states and 131 transitions. [2024-11-19 09:20:41,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 69 transitions, 274 flow [2024-11-19 09:20:41,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 69 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:20:41,249 INFO L231 Difference]: Finished difference. Result has 39 places, 26 transitions, 100 flow [2024-11-19 09:20:41,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=100, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2024-11-19 09:20:41,250 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-11-19 09:20:41,252 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 100 flow [2024-11-19 09:20:41,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-11-19 09:20:41,252 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:41,252 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:41,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:20:41,253 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:41,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:41,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1276324487, now seen corresponding path program 1 times [2024-11-19 09:20:41,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:41,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836281812] [2024-11-19 09:20:41,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:41,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:41,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:41,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:41,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836281812] [2024-11-19 09:20:41,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836281812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:41,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:41,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:20:41,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590943623] [2024-11-19 09:20:41,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:41,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:20:41,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:41,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:20:41,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:20:41,401 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:41,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-19 09:20:41,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:41,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:41,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:41,566 INFO L124 PetriNetUnfolderBase]: 247/454 cut-off events. [2024-11-19 09:20:41,566 INFO L125 PetriNetUnfolderBase]: For 406/406 co-relation queries the response was YES. [2024-11-19 09:20:41,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 454 events. 247/454 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1826 event pairs, 63 based on Foata normal form. 18/466 useless extension candidates. Maximal degree in co-relation 1170. Up to 190 conditions per place. [2024-11-19 09:20:41,572 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 27 selfloop transitions, 8 changer transitions 15/54 dead transitions. [2024-11-19 09:20:41,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 54 transitions, 294 flow [2024-11-19 09:20:41,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:20:41,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:20:41,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 94 transitions. [2024-11-19 09:20:41,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2024-11-19 09:20:41,574 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 100 flow. Second operand 6 states and 94 transitions. [2024-11-19 09:20:41,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 54 transitions, 294 flow [2024-11-19 09:20:41,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 290 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-19 09:20:41,577 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 144 flow [2024-11-19 09:20:41,577 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2024-11-19 09:20:41,578 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2024-11-19 09:20:41,578 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 144 flow [2024-11-19 09:20:41,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-19 09:20:41,578 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:41,578 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:41,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:20:41,578 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:41,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:41,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1117686194, now seen corresponding path program 1 times [2024-11-19 09:20:41,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:41,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119665926] [2024-11-19 09:20:41,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:41,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:41,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:41,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:41,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119665926] [2024-11-19 09:20:41,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119665926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:41,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:41,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:20:41,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658505500] [2024-11-19 09:20:41,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:41,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:20:41,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:41,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:20:41,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:20:41,682 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:41,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 144 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-19 09:20:41,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:41,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:41,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:41,853 INFO L124 PetriNetUnfolderBase]: 391/725 cut-off events. [2024-11-19 09:20:41,853 INFO L125 PetriNetUnfolderBase]: For 1142/1142 co-relation queries the response was YES. [2024-11-19 09:20:41,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2131 conditions, 725 events. 391/725 cut-off events. For 1142/1142 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3203 event pairs, 95 based on Foata normal form. 27/748 useless extension candidates. Maximal degree in co-relation 2114. Up to 264 conditions per place. [2024-11-19 09:20:41,857 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 47 selfloop transitions, 11 changer transitions 20/82 dead transitions. [2024-11-19 09:20:41,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 82 transitions, 518 flow [2024-11-19 09:20:41,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:20:41,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:20:41,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-11-19 09:20:41,859 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-11-19 09:20:41,859 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 144 flow. Second operand 9 states and 144 transitions. [2024-11-19 09:20:41,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 82 transitions, 518 flow [2024-11-19 09:20:41,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 82 transitions, 476 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-11-19 09:20:41,863 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 240 flow [2024-11-19 09:20:41,864 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=240, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2024-11-19 09:20:41,864 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-11-19 09:20:41,864 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 240 flow [2024-11-19 09:20:41,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-19 09:20:41,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:41,865 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:41,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:20:41,865 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:41,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:41,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1000674482, now seen corresponding path program 2 times [2024-11-19 09:20:41,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:41,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325758638] [2024-11-19 09:20:41,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:20:41,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:41,873 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:20:41,873 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:41,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:41,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325758638] [2024-11-19 09:20:41,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325758638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:41,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:41,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:20:41,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96554453] [2024-11-19 09:20:41,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:41,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:20:41,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:41,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:20:41,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:20:41,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:41,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-19 09:20:41,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:41,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:41,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:42,103 INFO L124 PetriNetUnfolderBase]: 328/611 cut-off events. [2024-11-19 09:20:42,104 INFO L125 PetriNetUnfolderBase]: For 1875/1875 co-relation queries the response was YES. [2024-11-19 09:20:42,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 611 events. 328/611 cut-off events. For 1875/1875 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2579 event pairs, 95 based on Foata normal form. 45/652 useless extension candidates. Maximal degree in co-relation 2027. Up to 234 conditions per place. [2024-11-19 09:20:42,108 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 38 selfloop transitions, 11 changer transitions 28/81 dead transitions. [2024-11-19 09:20:42,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 81 transitions, 612 flow [2024-11-19 09:20:42,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 09:20:42,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 09:20:42,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-11-19 09:20:42,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5474137931034483 [2024-11-19 09:20:42,111 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 240 flow. Second operand 8 states and 127 transitions. [2024-11-19 09:20:42,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 81 transitions, 612 flow [2024-11-19 09:20:42,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 568 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-11-19 09:20:42,121 INFO L231 Difference]: Finished difference. Result has 58 places, 37 transitions, 271 flow [2024-11-19 09:20:42,121 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=271, PETRI_PLACES=58, PETRI_TRANSITIONS=37} [2024-11-19 09:20:42,122 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-11-19 09:20:42,123 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 37 transitions, 271 flow [2024-11-19 09:20:42,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-19 09:20:42,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:42,123 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:42,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:20:42,123 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:42,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:42,124 INFO L85 PathProgramCache]: Analyzing trace with hash 392343623, now seen corresponding path program 1 times [2024-11-19 09:20:42,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:42,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945934137] [2024-11-19 09:20:42,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:42,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:42,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:42,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945934137] [2024-11-19 09:20:42,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945934137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:42,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:42,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 09:20:42,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675341588] [2024-11-19 09:20:42,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:42,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:20:42,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:42,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:20:42,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:20:42,347 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:42,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 37 transitions, 271 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2024-11-19 09:20:42,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:42,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:42,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:42,547 INFO L124 PetriNetUnfolderBase]: 364/670 cut-off events. [2024-11-19 09:20:42,547 INFO L125 PetriNetUnfolderBase]: For 2964/2964 co-relation queries the response was YES. [2024-11-19 09:20:42,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2425 conditions, 670 events. 364/670 cut-off events. For 2964/2964 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2809 event pairs, 65 based on Foata normal form. 27/691 useless extension candidates. Maximal degree in co-relation 2397. Up to 148 conditions per place. [2024-11-19 09:20:42,551 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 40 selfloop transitions, 18 changer transitions 28/90 dead transitions. [2024-11-19 09:20:42,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 90 transitions, 715 flow [2024-11-19 09:20:42,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:20:42,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:20:42,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-11-19 09:20:42,553 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2024-11-19 09:20:42,553 INFO L175 Difference]: Start difference. First operand has 58 places, 37 transitions, 271 flow. Second operand 10 states and 155 transitions. [2024-11-19 09:20:42,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 90 transitions, 715 flow [2024-11-19 09:20:42,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 90 transitions, 646 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-11-19 09:20:42,559 INFO L231 Difference]: Finished difference. Result has 63 places, 41 transitions, 350 flow [2024-11-19 09:20:42,559 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=350, PETRI_PLACES=63, PETRI_TRANSITIONS=41} [2024-11-19 09:20:42,560 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-11-19 09:20:42,560 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 41 transitions, 350 flow [2024-11-19 09:20:42,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2024-11-19 09:20:42,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:42,560 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:42,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:20:42,561 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:42,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:42,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1337298357, now seen corresponding path program 2 times [2024-11-19 09:20:42,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:42,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602117793] [2024-11-19 09:20:42,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:20:42,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:42,568 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:20:42,568 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:42,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:42,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:42,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602117793] [2024-11-19 09:20:42,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602117793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:42,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:42,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 09:20:42,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066413596] [2024-11-19 09:20:42,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:42,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:20:42,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:42,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:20:42,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:20:42,646 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:42,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 41 transitions, 350 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2024-11-19 09:20:42,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:42,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:42,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:42,815 INFO L124 PetriNetUnfolderBase]: 409/761 cut-off events. [2024-11-19 09:20:42,816 INFO L125 PetriNetUnfolderBase]: For 4019/4019 co-relation queries the response was YES. [2024-11-19 09:20:42,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 761 events. 409/761 cut-off events. For 4019/4019 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3401 event pairs, 116 based on Foata normal form. 18/775 useless extension candidates. Maximal degree in co-relation 2900. Up to 348 conditions per place. [2024-11-19 09:20:42,821 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 47 selfloop transitions, 16 changer transitions 21/88 dead transitions. [2024-11-19 09:20:42,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 88 transitions, 782 flow [2024-11-19 09:20:42,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:20:42,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:20:42,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-11-19 09:20:42,823 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2024-11-19 09:20:42,823 INFO L175 Difference]: Start difference. First operand has 63 places, 41 transitions, 350 flow. Second operand 9 states and 140 transitions. [2024-11-19 09:20:42,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 88 transitions, 782 flow [2024-11-19 09:20:42,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 703 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-11-19 09:20:42,831 INFO L231 Difference]: Finished difference. Result has 66 places, 46 transitions, 404 flow [2024-11-19 09:20:42,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=404, PETRI_PLACES=66, PETRI_TRANSITIONS=46} [2024-11-19 09:20:42,831 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 36 predicate places. [2024-11-19 09:20:42,832 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 46 transitions, 404 flow [2024-11-19 09:20:42,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2024-11-19 09:20:42,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:42,832 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:42,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 09:20:42,833 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:42,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:42,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1068189068, now seen corresponding path program 1 times [2024-11-19 09:20:42,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:42,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21520249] [2024-11-19 09:20:42,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:42,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:42,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:42,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:42,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21520249] [2024-11-19 09:20:42,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21520249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:20:42,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728911795] [2024-11-19 09:20:42,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:42,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:20:42,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:20:42,989 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) [2024-11-19 09:20:42,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:20:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:43,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 09:20:43,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:20:43,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:43,123 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:20:43,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:43,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728911795] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:20:43,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:20:43,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-19 09:20:43,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881079586] [2024-11-19 09:20:43,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:20:43,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 09:20:43,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:43,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 09:20:43,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-19 09:20:43,339 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:43,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 46 transitions, 404 flow. Second operand has 14 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 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) [2024-11-19 09:20:43,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:43,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:43,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:43,884 INFO L124 PetriNetUnfolderBase]: 643/1171 cut-off events. [2024-11-19 09:20:43,885 INFO L125 PetriNetUnfolderBase]: For 7902/7902 co-relation queries the response was YES. [2024-11-19 09:20:43,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4724 conditions, 1171 events. 643/1171 cut-off events. For 7902/7902 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5085 event pairs, 59 based on Foata normal form. 45/1210 useless extension candidates. Maximal degree in co-relation 4693. Up to 182 conditions per place. [2024-11-19 09:20:43,892 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 65 selfloop transitions, 35 changer transitions 56/160 dead transitions. [2024-11-19 09:20:43,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 160 transitions, 1460 flow [2024-11-19 09:20:43,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 09:20:43,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-19 09:20:43,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 293 transitions. [2024-11-19 09:20:43,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5317604355716878 [2024-11-19 09:20:43,893 INFO L175 Difference]: Start difference. First operand has 66 places, 46 transitions, 404 flow. Second operand 19 states and 293 transitions. [2024-11-19 09:20:43,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 160 transitions, 1460 flow [2024-11-19 09:20:43,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 160 transitions, 1395 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-11-19 09:20:43,903 INFO L231 Difference]: Finished difference. Result has 88 places, 62 transitions, 740 flow [2024-11-19 09:20:43,903 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=740, PETRI_PLACES=88, PETRI_TRANSITIONS=62} [2024-11-19 09:20:43,903 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-11-19 09:20:43,903 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 62 transitions, 740 flow [2024-11-19 09:20:43,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 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) [2024-11-19 09:20:43,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:43,904 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:43,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 09:20:44,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:20:44,106 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:44,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:44,106 INFO L85 PathProgramCache]: Analyzing trace with hash -776155970, now seen corresponding path program 1 times [2024-11-19 09:20:44,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:44,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86819897] [2024-11-19 09:20:44,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:44,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:44,309 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:20:44,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:44,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86819897] [2024-11-19 09:20:44,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86819897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:20:44,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483459315] [2024-11-19 09:20:44,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:44,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:20:44,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:20:44,312 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) [2024-11-19 09:20:44,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 09:20:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:44,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 09:20:44,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:20:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:20:44,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:20:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:20:44,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483459315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:20:44,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:20:44,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-19 09:20:44,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233769021] [2024-11-19 09:20:44,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:20:44,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 09:20:44,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:44,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 09:20:44,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-19 09:20:44,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:44,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 62 transitions, 740 flow. Second operand has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 states have internal predecessors, (175), 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) [2024-11-19 09:20:44,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:44,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:44,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:45,447 INFO L124 PetriNetUnfolderBase]: 841/1583 cut-off events. [2024-11-19 09:20:45,447 INFO L125 PetriNetUnfolderBase]: For 19972/19972 co-relation queries the response was YES. [2024-11-19 09:20:45,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7422 conditions, 1583 events. 841/1583 cut-off events. For 19972/19972 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 7015 event pairs, 203 based on Foata normal form. 81/1660 useless extension candidates. Maximal degree in co-relation 7383. Up to 720 conditions per place. [2024-11-19 09:20:45,460 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 92 selfloop transitions, 27 changer transitions 89/212 dead transitions. [2024-11-19 09:20:45,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 212 transitions, 2414 flow [2024-11-19 09:20:45,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 09:20:45,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-19 09:20:45,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 376 transitions. [2024-11-19 09:20:45,463 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5186206896551724 [2024-11-19 09:20:45,463 INFO L175 Difference]: Start difference. First operand has 88 places, 62 transitions, 740 flow. Second operand 25 states and 376 transitions. [2024-11-19 09:20:45,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 212 transitions, 2414 flow [2024-11-19 09:20:45,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 212 transitions, 1908 flow, removed 238 selfloop flow, removed 10 redundant places. [2024-11-19 09:20:45,483 INFO L231 Difference]: Finished difference. Result has 116 places, 76 transitions, 829 flow [2024-11-19 09:20:45,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=829, PETRI_PLACES=116, PETRI_TRANSITIONS=76} [2024-11-19 09:20:45,484 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-11-19 09:20:45,484 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 76 transitions, 829 flow [2024-11-19 09:20:45,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 states have internal predecessors, (175), 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) [2024-11-19 09:20:45,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:45,485 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:45,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 09:20:45,685 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,SelfDestructingSolverStorable8 [2024-11-19 09:20:45,685 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:45,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:45,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1561569822, now seen corresponding path program 2 times [2024-11-19 09:20:45,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:45,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708684577] [2024-11-19 09:20:45,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:20:45,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:45,697 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:20:45,698 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:45,807 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:20:45,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:45,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708684577] [2024-11-19 09:20:45,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708684577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:20:45,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824429989] [2024-11-19 09:20:45,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:20:45,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:20:45,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:20:45,811 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) [2024-11-19 09:20:45,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 09:20:45,872 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:20:45,873 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:45,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 09:20:45,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:20:45,939 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:20:45,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:20:46,089 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:20:46,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824429989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:20:46,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:20:46,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-19 09:20:46,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022988682] [2024-11-19 09:20:46,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:20:46,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 09:20:46,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:46,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 09:20:46,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-19 09:20:46,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:46,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 76 transitions, 829 flow. Second operand has 17 states, 17 states have (on average 10.352941176470589) internal successors, (176), 17 states have internal predecessors, (176), 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) [2024-11-19 09:20:46,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:46,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:46,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:46,917 INFO L124 PetriNetUnfolderBase]: 1453/2768 cut-off events. [2024-11-19 09:20:46,917 INFO L125 PetriNetUnfolderBase]: For 66759/66759 co-relation queries the response was YES. [2024-11-19 09:20:46,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14744 conditions, 2768 events. 1453/2768 cut-off events. For 66759/66759 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 15016 event pairs, 138 based on Foata normal form. 81/2845 useless extension candidates. Maximal degree in co-relation 14691. Up to 484 conditions per place. [2024-11-19 09:20:46,949 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 127 selfloop transitions, 82 changer transitions 91/304 dead transitions. [2024-11-19 09:20:46,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 304 transitions, 3909 flow [2024-11-19 09:20:46,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-19 09:20:46,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-19 09:20:46,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 489 transitions. [2024-11-19 09:20:46,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5269396551724138 [2024-11-19 09:20:46,958 INFO L175 Difference]: Start difference. First operand has 116 places, 76 transitions, 829 flow. Second operand 32 states and 489 transitions. [2024-11-19 09:20:46,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 304 transitions, 3909 flow [2024-11-19 09:20:47,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 304 transitions, 3292 flow, removed 299 selfloop flow, removed 13 redundant places. [2024-11-19 09:20:47,014 INFO L231 Difference]: Finished difference. Result has 148 places, 122 transitions, 1640 flow [2024-11-19 09:20:47,015 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1640, PETRI_PLACES=148, PETRI_TRANSITIONS=122} [2024-11-19 09:20:47,015 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-11-19 09:20:47,015 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 122 transitions, 1640 flow [2024-11-19 09:20:47,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.352941176470589) internal successors, (176), 17 states have internal predecessors, (176), 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) [2024-11-19 09:20:47,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:47,016 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:47,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 09:20:47,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:20:47,217 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:47,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:47,218 INFO L85 PathProgramCache]: Analyzing trace with hash 370234888, now seen corresponding path program 3 times [2024-11-19 09:20:47,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:47,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058675134] [2024-11-19 09:20:47,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:20:47,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:47,235 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 09:20:47,235 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:47,394 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:20:47,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:47,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058675134] [2024-11-19 09:20:47,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058675134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:20:47,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731701586] [2024-11-19 09:20:47,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:20:47,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:20:47,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:20:47,398 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) [2024-11-19 09:20:47,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 09:20:47,446 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 09:20:47,446 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:47,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 09:20:47,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:20:47,511 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:20:47,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:20:47,693 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:20:47,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731701586] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:20:47,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:20:47,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-19 09:20:47,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408365707] [2024-11-19 09:20:47,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:20:47,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 09:20:47,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:47,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 09:20:47,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-11-19 09:20:47,726 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:47,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 122 transitions, 1640 flow. Second operand has 18 states, 18 states have (on average 10.277777777777779) internal successors, (185), 18 states have internal predecessors, (185), 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) [2024-11-19 09:20:47,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:47,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:47,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:49,271 INFO L124 PetriNetUnfolderBase]: 1840/3477 cut-off events. [2024-11-19 09:20:49,272 INFO L125 PetriNetUnfolderBase]: For 152545/152545 co-relation queries the response was YES. [2024-11-19 09:20:49,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21887 conditions, 3477 events. 1840/3477 cut-off events. For 152545/152545 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 19649 event pairs, 58 based on Foata normal form. 117/3590 useless extension candidates. Maximal degree in co-relation 21819. Up to 509 conditions per place. [2024-11-19 09:20:49,303 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 124 selfloop transitions, 123 changer transitions 115/366 dead transitions. [2024-11-19 09:20:49,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 366 transitions, 5875 flow [2024-11-19 09:20:49,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-19 09:20:49,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-11-19 09:20:49,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 551 transitions. [2024-11-19 09:20:49,306 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-11-19 09:20:49,306 INFO L175 Difference]: Start difference. First operand has 148 places, 122 transitions, 1640 flow. Second operand 36 states and 551 transitions. [2024-11-19 09:20:49,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 366 transitions, 5875 flow [2024-11-19 09:20:49,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 366 transitions, 4973 flow, removed 436 selfloop flow, removed 15 redundant places. [2024-11-19 09:20:49,499 INFO L231 Difference]: Finished difference. Result has 182 places, 157 transitions, 2462 flow [2024-11-19 09:20:49,500 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2462, PETRI_PLACES=182, PETRI_TRANSITIONS=157} [2024-11-19 09:20:49,500 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-11-19 09:20:49,501 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 157 transitions, 2462 flow [2024-11-19 09:20:49,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.277777777777779) internal successors, (185), 18 states have internal predecessors, (185), 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) [2024-11-19 09:20:49,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:49,501 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:49,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 09:20:49,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:20:49,702 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:49,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:49,703 INFO L85 PathProgramCache]: Analyzing trace with hash 759735367, now seen corresponding path program 4 times [2024-11-19 09:20:49,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:49,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445909159] [2024-11-19 09:20:49,703 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:20:49,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:49,725 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:20:49,725 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:50,003 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:50,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:50,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445909159] [2024-11-19 09:20:50,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445909159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:20:50,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541293302] [2024-11-19 09:20:50,004 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:20:50,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:20:50,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:20:50,007 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) [2024-11-19 09:20:50,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 09:20:50,065 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:20:50,065 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:50,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:20:50,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:20:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:50,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:20:50,413 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:50,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541293302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:20:50,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:20:50,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-19 09:20:50,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198943945] [2024-11-19 09:20:50,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:20:50,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 09:20:50,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:50,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 09:20:50,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2024-11-19 09:20:50,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:50,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 157 transitions, 2462 flow. Second operand has 26 states, 26 states have (on average 10.038461538461538) internal successors, (261), 26 states have internal predecessors, (261), 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) [2024-11-19 09:20:50,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:50,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:50,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:52,374 INFO L124 PetriNetUnfolderBase]: 2650/4943 cut-off events. [2024-11-19 09:20:52,374 INFO L125 PetriNetUnfolderBase]: For 334076/334076 co-relation queries the response was YES. [2024-11-19 09:20:52,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37287 conditions, 4943 events. 2650/4943 cut-off events. For 334076/334076 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 26886 event pairs, 89 based on Foata normal form. 99/5036 useless extension candidates. Maximal degree in co-relation 37206. Up to 783 conditions per place. [2024-11-19 09:20:52,446 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 164 selfloop transitions, 178 changer transitions 146/492 dead transitions. [2024-11-19 09:20:52,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 492 transitions, 9931 flow [2024-11-19 09:20:52,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-19 09:20:52,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-19 09:20:52,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 749 transitions. [2024-11-19 09:20:52,448 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5270935960591133 [2024-11-19 09:20:52,448 INFO L175 Difference]: Start difference. First operand has 182 places, 157 transitions, 2462 flow. Second operand 49 states and 749 transitions. [2024-11-19 09:20:52,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 492 transitions, 9931 flow [2024-11-19 09:20:52,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 492 transitions, 8217 flow, removed 824 selfloop flow, removed 20 redundant places. [2024-11-19 09:20:52,950 INFO L231 Difference]: Finished difference. Result has 232 places, 218 transitions, 3956 flow [2024-11-19 09:20:52,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1886, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=3956, PETRI_PLACES=232, PETRI_TRANSITIONS=218} [2024-11-19 09:20:52,952 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 202 predicate places. [2024-11-19 09:20:52,952 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 218 transitions, 3956 flow [2024-11-19 09:20:52,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.038461538461538) internal successors, (261), 26 states have internal predecessors, (261), 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) [2024-11-19 09:20:52,952 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:52,953 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:52,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 09:20:53,153 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,SelfDestructingSolverStorable11 [2024-11-19 09:20:53,154 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:53,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:53,155 INFO L85 PathProgramCache]: Analyzing trace with hash -512641710, now seen corresponding path program 5 times [2024-11-19 09:20:53,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:53,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064290246] [2024-11-19 09:20:53,155 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:20:53,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:53,169 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-19 09:20:53,169 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:53,580 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:20:53,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:53,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064290246] [2024-11-19 09:20:53,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064290246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:20:53,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678717434] [2024-11-19 09:20:53,581 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:20:53,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:20:53,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:20:53,582 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) [2024-11-19 09:20:53,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 09:20:53,636 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-19 09:20:53,636 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:53,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 09:20:53,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:20:53,767 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:20:53,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:20:54,188 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:20:54,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678717434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:20:54,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:20:54,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2024-11-19 09:20:54,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506787306] [2024-11-19 09:20:54,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:20:54,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-19 09:20:54,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:54,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-19 09:20:54,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2024-11-19 09:20:54,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:54,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 218 transitions, 3956 flow. Second operand has 41 states, 41 states have (on average 10.121951219512194) internal successors, (415), 41 states have internal predecessors, (415), 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) [2024-11-19 09:20:54,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:54,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:54,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:55,953 INFO L124 PetriNetUnfolderBase]: 2722/5210 cut-off events. [2024-11-19 09:20:55,953 INFO L125 PetriNetUnfolderBase]: For 521658/521658 co-relation queries the response was YES. [2024-11-19 09:20:55,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42978 conditions, 5210 events. 2722/5210 cut-off events. For 521658/521658 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 29527 event pairs, 1013 based on Foata normal form. 63/5269 useless extension candidates. Maximal degree in co-relation 42875. Up to 3618 conditions per place. [2024-11-19 09:20:56,016 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 261 selfloop transitions, 47 changer transitions 95/407 dead transitions. [2024-11-19 09:20:56,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 407 transitions, 9316 flow [2024-11-19 09:20:56,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-19 09:20:56,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-19 09:20:56,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 484 transitions. [2024-11-19 09:20:56,019 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2024-11-19 09:20:56,019 INFO L175 Difference]: Start difference. First operand has 232 places, 218 transitions, 3956 flow. Second operand 33 states and 484 transitions. [2024-11-19 09:20:56,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 407 transitions, 9316 flow [2024-11-19 09:20:56,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 407 transitions, 6814 flow, removed 1228 selfloop flow, removed 17 redundant places. [2024-11-19 09:20:56,720 INFO L231 Difference]: Finished difference. Result has 251 places, 234 transitions, 3467 flow [2024-11-19 09:20:56,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2840, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3467, PETRI_PLACES=251, PETRI_TRANSITIONS=234} [2024-11-19 09:20:56,721 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-11-19 09:20:56,721 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 234 transitions, 3467 flow [2024-11-19 09:20:56,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.121951219512194) internal successors, (415), 41 states have internal predecessors, (415), 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) [2024-11-19 09:20:56,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:56,722 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:56,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 09:20:56,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:20:56,923 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:56,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:56,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1359300580, now seen corresponding path program 6 times [2024-11-19 09:20:56,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:56,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916551413] [2024-11-19 09:20:56,924 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:20:56,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:56,953 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-19 09:20:56,956 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:20:57,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:57,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916551413] [2024-11-19 09:20:57,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916551413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:20:57,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761216795] [2024-11-19 09:20:57,295 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:20:57,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:20:57,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:20:57,297 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) [2024-11-19 09:20:57,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 09:20:57,405 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-19 09:20:57,406 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:57,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 09:20:57,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:20:57,549 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:20:57,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:20:57,930 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:20:57,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761216795] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:20:57,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:20:57,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2024-11-19 09:20:57,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293727827] [2024-11-19 09:20:57,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:20:57,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-19 09:20:57,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:57,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-19 09:20:57,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1305, Unknown=0, NotChecked=0, Total=1640 [2024-11-19 09:20:57,946 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:57,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 234 transitions, 3467 flow. Second operand has 41 states, 41 states have (on average 10.146341463414634) internal successors, (416), 41 states have internal predecessors, (416), 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) [2024-11-19 09:20:57,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:57,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:57,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:21:00,517 INFO L124 PetriNetUnfolderBase]: 3226/6363 cut-off events. [2024-11-19 09:21:00,517 INFO L125 PetriNetUnfolderBase]: For 504577/504577 co-relation queries the response was YES. [2024-11-19 09:21:00,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46658 conditions, 6363 events. 3226/6363 cut-off events. For 504577/504577 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 38301 event pairs, 596 based on Foata normal form. 63/6422 useless extension candidates. Maximal degree in co-relation 46550. Up to 2398 conditions per place. [2024-11-19 09:21:00,628 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 265 selfloop transitions, 167 changer transitions 135/571 dead transitions. [2024-11-19 09:21:00,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 571 transitions, 10350 flow [2024-11-19 09:21:00,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-19 09:21:00,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2024-11-19 09:21:00,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 773 transitions. [2024-11-19 09:21:00,630 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5029277813923227 [2024-11-19 09:21:00,630 INFO L175 Difference]: Start difference. First operand has 251 places, 234 transitions, 3467 flow. Second operand 53 states and 773 transitions. [2024-11-19 09:21:00,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 571 transitions, 10350 flow [2024-11-19 09:21:01,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 571 transitions, 9587 flow, removed 354 selfloop flow, removed 21 redundant places. [2024-11-19 09:21:01,554 INFO L231 Difference]: Finished difference. Result has 294 places, 290 transitions, 4639 flow [2024-11-19 09:21:01,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3046, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=4639, PETRI_PLACES=294, PETRI_TRANSITIONS=290} [2024-11-19 09:21:01,555 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 264 predicate places. [2024-11-19 09:21:01,555 INFO L471 AbstractCegarLoop]: Abstraction has has 294 places, 290 transitions, 4639 flow [2024-11-19 09:21:01,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.146341463414634) internal successors, (416), 41 states have internal predecessors, (416), 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) [2024-11-19 09:21:01,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:01,556 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:21:01,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 09:21:01,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:21:01,805 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:21:01,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:01,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1345030860, now seen corresponding path program 7 times [2024-11-19 09:21:01,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:01,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653344220] [2024-11-19 09:21:01,810 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:21:01,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:21:02,356 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:21:02,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:21:02,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653344220] [2024-11-19 09:21:02,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653344220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:21:02,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926275248] [2024-11-19 09:21:02,357 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:21:02,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:21:02,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:21:02,362 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:21:02,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 09:21:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:21:02,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 09:21:02,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:21:02,647 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:21:02,648 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:21:03,251 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:21:03,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926275248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:21:03,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:21:03,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2024-11-19 09:21:03,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727008652] [2024-11-19 09:21:03,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:21:03,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-19 09:21:03,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:21:03,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-19 09:21:03,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1446, Unknown=0, NotChecked=0, Total=1722 [2024-11-19 09:21:03,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:21:03,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 290 transitions, 4639 flow. Second operand has 42 states, 42 states have (on average 10.142857142857142) internal successors, (426), 42 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:03,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:03,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:21:03,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:21:06,803 INFO L124 PetriNetUnfolderBase]: 4117/8380 cut-off events. [2024-11-19 09:21:06,803 INFO L125 PetriNetUnfolderBase]: For 859293/859293 co-relation queries the response was YES. [2024-11-19 09:21:06,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68315 conditions, 8380 events. 4117/8380 cut-off events. For 859293/859293 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 54942 event pairs, 288 based on Foata normal form. 81/8457 useless extension candidates. Maximal degree in co-relation 68194. Up to 1734 conditions per place. [2024-11-19 09:21:06,894 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 239 selfloop transitions, 311 changer transitions 157/711 dead transitions. [2024-11-19 09:21:06,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 711 transitions, 14467 flow [2024-11-19 09:21:06,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-19 09:21:06,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2024-11-19 09:21:06,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 871 transitions. [2024-11-19 09:21:06,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5090590298071304 [2024-11-19 09:21:06,897 INFO L175 Difference]: Start difference. First operand has 294 places, 290 transitions, 4639 flow. Second operand 59 states and 871 transitions. [2024-11-19 09:21:06,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 711 transitions, 14467 flow [2024-11-19 09:21:08,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 711 transitions, 12986 flow, removed 640 selfloop flow, removed 29 redundant places. [2024-11-19 09:21:08,502 INFO L231 Difference]: Finished difference. Result has 339 places, 387 transitions, 6852 flow [2024-11-19 09:21:08,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3874, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=6852, PETRI_PLACES=339, PETRI_TRANSITIONS=387} [2024-11-19 09:21:08,503 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-11-19 09:21:08,503 INFO L471 AbstractCegarLoop]: Abstraction has has 339 places, 387 transitions, 6852 flow [2024-11-19 09:21:08,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 10.142857142857142) internal successors, (426), 42 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:08,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:08,503 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:21:08,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 09:21:08,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 09:21:08,704 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:21:08,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:08,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1205915494, now seen corresponding path program 8 times [2024-11-19 09:21:08,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:08,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536929674] [2024-11-19 09:21:08,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:21:08,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:08,715 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:21:08,715 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:21:09,026 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:21:09,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:21:09,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536929674] [2024-11-19 09:21:09,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536929674] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:21:09,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536875017] [2024-11-19 09:21:09,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:21:09,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:21:09,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:21:09,029 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:21:09,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 09:21:09,127 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:21:09,127 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:21:09,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 09:21:09,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:21:09,276 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:21:09,276 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:21:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:21:09,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536875017] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:21:09,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:21:09,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2024-11-19 09:21:09,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058272890] [2024-11-19 09:21:09,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:21:09,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-19 09:21:09,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:21:09,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-19 09:21:09,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1383, Unknown=0, NotChecked=0, Total=1640 [2024-11-19 09:21:09,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:21:09,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 387 transitions, 6852 flow. Second operand has 41 states, 41 states have (on average 10.146341463414634) internal successors, (416), 41 states have internal predecessors, (416), 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) [2024-11-19 09:21:09,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:09,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:21:09,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:21:13,503 INFO L124 PetriNetUnfolderBase]: 5161/10492 cut-off events. [2024-11-19 09:21:13,503 INFO L125 PetriNetUnfolderBase]: For 1483818/1483818 co-relation queries the response was YES. [2024-11-19 09:21:13,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95272 conditions, 10492 events. 5161/10492 cut-off events. For 1483818/1483818 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 72702 event pairs, 150 based on Foata normal form. 81/10569 useless extension candidates. Maximal degree in co-relation 95134. Up to 2286 conditions per place. [2024-11-19 09:21:13,657 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 222 selfloop transitions, 424 changer transitions 157/807 dead transitions. [2024-11-19 09:21:13,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 807 transitions, 17707 flow [2024-11-19 09:21:13,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-19 09:21:13,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2024-11-19 09:21:13,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 881 transitions. [2024-11-19 09:21:13,662 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5149035651665692 [2024-11-19 09:21:13,662 INFO L175 Difference]: Start difference. First operand has 339 places, 387 transitions, 6852 flow. Second operand 59 states and 881 transitions. [2024-11-19 09:21:13,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 807 transitions, 17707 flow [2024-11-19 09:21:16,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 807 transitions, 15062 flow, removed 1172 selfloop flow, removed 31 redundant places. [2024-11-19 09:21:16,742 INFO L231 Difference]: Finished difference. Result has 383 places, 483 transitions, 8750 flow [2024-11-19 09:21:16,743 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5411, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=343, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=8750, PETRI_PLACES=383, PETRI_TRANSITIONS=483} [2024-11-19 09:21:16,743 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 353 predicate places. [2024-11-19 09:21:16,744 INFO L471 AbstractCegarLoop]: Abstraction has has 383 places, 483 transitions, 8750 flow [2024-11-19 09:21:16,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.146341463414634) internal successors, (416), 41 states have internal predecessors, (416), 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) [2024-11-19 09:21:16,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:16,745 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:21:16,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 09:21:16,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 09:21:16,949 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:21:16,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:16,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1386150218, now seen corresponding path program 9 times [2024-11-19 09:21:16,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:16,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534881819] [2024-11-19 09:21:16,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:21:16,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:16,988 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-19 09:21:16,988 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:21:17,314 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:21:17,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:21:17,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534881819] [2024-11-19 09:21:17,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534881819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:21:17,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372982726] [2024-11-19 09:21:17,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:21:17,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:21:17,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:21:17,317 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:21:17,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 09:21:17,369 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-19 09:21:17,370 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:21:17,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-19 09:21:17,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:21:17,445 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:21:17,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:21:17,778 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:21:17,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372982726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:21:17,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:21:17,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2024-11-19 09:21:17,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587158336] [2024-11-19 09:21:17,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:21:17,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-19 09:21:17,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:21:17,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-19 09:21:17,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=1403, Unknown=0, NotChecked=0, Total=1722 [2024-11-19 09:21:17,792 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:21:17,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 483 transitions, 8750 flow. Second operand has 42 states, 42 states have (on average 10.142857142857142) internal successors, (426), 42 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:17,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:17,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:21:17,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:21:22,309 INFO L124 PetriNetUnfolderBase]: 5935/11928 cut-off events. [2024-11-19 09:21:22,309 INFO L125 PetriNetUnfolderBase]: For 1948370/1948370 co-relation queries the response was YES. [2024-11-19 09:21:22,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114695 conditions, 11928 events. 5935/11928 cut-off events. For 1948370/1948370 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 84079 event pairs, 66 based on Foata normal form. 90/12014 useless extension candidates. Maximal degree in co-relation 114539. Up to 2607 conditions per place. [2024-11-19 09:21:22,509 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 216 selfloop transitions, 496 changer transitions 162/878 dead transitions. [2024-11-19 09:21:22,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 878 transitions, 20217 flow [2024-11-19 09:21:22,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-19 09:21:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2024-11-19 09:21:22,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 907 transitions. [2024-11-19 09:21:22,518 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.521264367816092 [2024-11-19 09:21:22,518 INFO L175 Difference]: Start difference. First operand has 383 places, 483 transitions, 8750 flow. Second operand 60 states and 907 transitions. [2024-11-19 09:21:22,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 878 transitions, 20217 flow [2024-11-19 09:21:27,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 878 transitions, 17679 flow, removed 1081 selfloop flow, removed 34 redundant places. [2024-11-19 09:21:27,304 INFO L231 Difference]: Finished difference. Result has 422 places, 542 transitions, 10250 flow [2024-11-19 09:21:27,305 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=7126, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=444, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=10250, PETRI_PLACES=422, PETRI_TRANSITIONS=542} [2024-11-19 09:21:27,305 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 392 predicate places. [2024-11-19 09:21:27,305 INFO L471 AbstractCegarLoop]: Abstraction has has 422 places, 542 transitions, 10250 flow [2024-11-19 09:21:27,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 10.142857142857142) internal successors, (426), 42 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:27,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:27,306 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:21:27,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 09:21:27,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 09:21:27,506 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:21:27,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:27,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2002146405, now seen corresponding path program 10 times [2024-11-19 09:21:27,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:27,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047470068] [2024-11-19 09:21:27,507 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:21:27,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:27,520 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:21:27,520 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:21:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:21:27,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:21:27,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047470068] [2024-11-19 09:21:27,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047470068] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:21:27,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857689816] [2024-11-19 09:21:27,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:21:27,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:21:27,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:21:27,782 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:21:27,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 09:21:27,838 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:21:27,838 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:21:27,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 09:21:27,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:21:27,903 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:21:27,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:21:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:21:28,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857689816] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:21:28,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:21:28,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 42 [2024-11-19 09:21:28,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319161272] [2024-11-19 09:21:28,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:21:28,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-19 09:21:28,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:21:28,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-19 09:21:28,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=1412, Unknown=0, NotChecked=0, Total=1806 [2024-11-19 09:21:28,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:21:28,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 542 transitions, 10250 flow. Second operand has 43 states, 43 states have (on average 10.116279069767442) internal successors, (435), 43 states have internal predecessors, (435), 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) [2024-11-19 09:21:28,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:28,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:21:28,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:21:33,348 INFO L124 PetriNetUnfolderBase]: 6070/12269 cut-off events. [2024-11-19 09:21:33,348 INFO L125 PetriNetUnfolderBase]: For 2428056/2428056 co-relation queries the response was YES. [2024-11-19 09:21:33,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124467 conditions, 12269 events. 6070/12269 cut-off events. For 2428056/2428056 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 87121 event pairs, 203 based on Foata normal form. 27/12290 useless extension candidates. Maximal degree in co-relation 124297. Up to 2661 conditions per place. [2024-11-19 09:21:33,593 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 224 selfloop transitions, 481 changer transitions 87/796 dead transitions. [2024-11-19 09:21:33,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 796 transitions, 18322 flow [2024-11-19 09:21:33,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-19 09:21:33,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-11-19 09:21:33,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 653 transitions. [2024-11-19 09:21:33,599 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5236567762630313 [2024-11-19 09:21:33,599 INFO L175 Difference]: Start difference. First operand has 422 places, 542 transitions, 10250 flow. Second operand 43 states and 653 transitions. [2024-11-19 09:21:33,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 796 transitions, 18322 flow [2024-11-19 09:21:40,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 796 transitions, 15071 flow, removed 1320 selfloop flow, removed 42 redundant places. [2024-11-19 09:21:40,581 INFO L231 Difference]: Finished difference. Result has 419 places, 560 transitions, 10119 flow [2024-11-19 09:21:40,582 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=8323, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=463, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=10119, PETRI_PLACES=419, PETRI_TRANSITIONS=560} [2024-11-19 09:21:40,582 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 389 predicate places. [2024-11-19 09:21:40,582 INFO L471 AbstractCegarLoop]: Abstraction has has 419 places, 560 transitions, 10119 flow [2024-11-19 09:21:40,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 10.116279069767442) internal successors, (435), 43 states have internal predecessors, (435), 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) [2024-11-19 09:21:40,583 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:40,583 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:21:40,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 09:21:40,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 09:21:40,788 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:21:40,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:40,788 INFO L85 PathProgramCache]: Analyzing trace with hash -282272267, now seen corresponding path program 11 times [2024-11-19 09:21:40,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:40,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661036763] [2024-11-19 09:21:40,788 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:21:40,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:40,817 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-19 09:21:40,822 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:21:41,317 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:21:41,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:21:41,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661036763] [2024-11-19 09:21:41,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661036763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:21:41,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445993584] [2024-11-19 09:21:41,317 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:21:41,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:21:41,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:21:41,319 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:21:41,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 09:21:41,392 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-19 09:21:41,392 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:21:41,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 09:21:41,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:21:41,535 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:21:41,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:21:41,922 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:21:41,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445993584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:21:41,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:21:41,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 43 [2024-11-19 09:21:41,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935182376] [2024-11-19 09:21:41,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:21:41,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-19 09:21:41,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:21:41,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-19 09:21:41,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1495, Unknown=0, NotChecked=0, Total=1892 [2024-11-19 09:21:41,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:21:41,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 560 transitions, 10119 flow. Second operand has 44 states, 44 states have (on average 10.113636363636363) internal successors, (445), 44 states have internal predecessors, (445), 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) [2024-11-19 09:21:41,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:41,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:21:41,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:21:46,477 INFO L124 PetriNetUnfolderBase]: 6043/12228 cut-off events. [2024-11-19 09:21:46,477 INFO L125 PetriNetUnfolderBase]: For 1898594/1898594 co-relation queries the response was YES. [2024-11-19 09:21:46,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112665 conditions, 12228 events. 6043/12228 cut-off events. For 1898594/1898594 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 86808 event pairs, 152 based on Foata normal form. 45/12269 useless extension candidates. Maximal degree in co-relation 112497. Up to 2637 conditions per place. [2024-11-19 09:21:46,717 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 210 selfloop transitions, 494 changer transitions 101/809 dead transitions. [2024-11-19 09:21:46,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 809 transitions, 17003 flow [2024-11-19 09:21:46,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-19 09:21:46,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-19 09:21:46,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 681 transitions. [2024-11-19 09:21:46,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5218390804597701 [2024-11-19 09:21:46,719 INFO L175 Difference]: Start difference. First operand has 419 places, 560 transitions, 10119 flow. Second operand 45 states and 681 transitions. [2024-11-19 09:21:46,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 809 transitions, 17003 flow [2024-11-19 09:21:52,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 809 transitions, 15396 flow, removed 646 selfloop flow, removed 24 redundant places. [2024-11-19 09:21:52,263 INFO L231 Difference]: Finished difference. Result has 442 places, 563 transitions, 10620 flow [2024-11-19 09:21:52,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=9292, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=491, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=10620, PETRI_PLACES=442, PETRI_TRANSITIONS=563} [2024-11-19 09:21:52,265 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 412 predicate places. [2024-11-19 09:21:52,265 INFO L471 AbstractCegarLoop]: Abstraction has has 442 places, 563 transitions, 10620 flow [2024-11-19 09:21:52,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 10.113636363636363) internal successors, (445), 44 states have internal predecessors, (445), 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) [2024-11-19 09:21:52,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:52,266 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:21:52,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 09:21:52,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:21:52,470 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:21:52,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:52,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1588379408, now seen corresponding path program 12 times [2024-11-19 09:21:52,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:52,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782824488] [2024-11-19 09:21:52,475 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:21:52,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:52,496 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-19 09:21:52,496 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 09:21:52,496 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:21:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:21:52,521 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:21:52,522 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:21:52,523 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2024-11-19 09:21:52,525 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-19 09:21:52,525 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-19 09:21:52,525 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-19 09:21:52,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 09:21:52,526 INFO L407 BasicCegarLoop]: Path program histogram: [12, 2, 2, 1, 1, 1, 1] [2024-11-19 09:21:52,631 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 09:21:52,631 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 09:21:52,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:21:52 BasicIcfg [2024-11-19 09:21:52,638 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 09:21:52,639 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 09:21:52,639 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 09:21:52,639 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 09:21:52,639 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:20:40" (3/4) ... [2024-11-19 09:21:52,642 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-19 09:21:52,643 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 09:21:52,643 INFO L158 Benchmark]: Toolchain (without parser) took 73328.01ms. Allocated memory was 146.8MB in the beginning and 11.1GB in the end (delta: 11.0GB). Free memory was 77.7MB in the beginning and 9.1GB in the end (delta: -9.0GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2024-11-19 09:21:52,643 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 146.8MB. Free memory was 111.7MB in the beginning and 111.4MB in the end (delta: 304.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 09:21:52,645 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.81ms. Allocated memory is still 146.8MB. Free memory was 77.3MB in the beginning and 55.5MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-19 09:21:52,645 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.62ms. Allocated memory is still 146.8MB. Free memory was 55.5MB in the beginning and 53.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 09:21:52,645 INFO L158 Benchmark]: Boogie Preprocessor took 49.38ms. Allocated memory is still 146.8MB. Free memory was 53.4MB in the beginning and 51.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 09:21:52,645 INFO L158 Benchmark]: RCFGBuilder took 518.13ms. Allocated memory was 146.8MB in the beginning and 180.4MB in the end (delta: 33.6MB). Free memory was 51.4MB in the beginning and 135.6MB in the end (delta: -84.2MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2024-11-19 09:21:52,646 INFO L158 Benchmark]: TraceAbstraction took 72339.66ms. Allocated memory was 180.4MB in the beginning and 11.1GB in the end (delta: 11.0GB). Free memory was 134.5MB in the beginning and 9.1GB in the end (delta: -9.0GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2024-11-19 09:21:52,646 INFO L158 Benchmark]: Witness Printer took 4.17ms. Allocated memory is still 11.1GB. Free memory is still 9.1GB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 09:21:52,647 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 146.8MB. Free memory was 111.7MB in the beginning and 111.4MB in the end (delta: 304.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.81ms. Allocated memory is still 146.8MB. Free memory was 77.3MB in the beginning and 55.5MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.62ms. Allocated memory is still 146.8MB. Free memory was 55.5MB in the beginning and 53.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.38ms. Allocated memory is still 146.8MB. Free memory was 53.4MB in the beginning and 51.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 518.13ms. Allocated memory was 146.8MB in the beginning and 180.4MB in the end (delta: 33.6MB). Free memory was 51.4MB in the beginning and 135.6MB in the end (delta: -84.2MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. * TraceAbstraction took 72339.66ms. Allocated memory was 180.4MB in the beginning and 11.1GB in the end (delta: 11.0GB). Free memory was 134.5MB in the beginning and 9.1GB in the end (delta: -9.0GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. * Witness Printer took 4.17ms. Allocated memory is still 11.1GB. Free memory is still 9.1GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 693. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(arg)={0:0}, \old(argc)=49, \old(argv)={50:51}, argc=49, i=3, id1=-1, j=6] [L696] 1 int k = 0; VAL [\old(arg)={0:0}, arg={0:0}, i=3, j=6, k=0] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=49, \old(argv)={50:51}, arg={0:0}, argc=49, i=3, id1=-1, id2=0, j=6, k=0] [L704] 2 int k = 0; VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=5] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=5] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=5] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=5] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=6] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=7] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=7] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=8] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=9] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L716] 0 int condI = i >= (2*10 +6); VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=49, \old(argv)={50:51}, arg={0:0}, arg={0:0}, argc=49, condI=0, i=23, id1=-1, id2=0, j=24, k=9, k=9] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L719] 0 int condJ = j >= (2*10 +6); VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=49, \old(argv)={50:51}, arg={0:0}, arg={0:0}, argc=49, condI=0, condJ=1, i=25, id1=-1, id2=0, j=26, k=9, k=9] [L721] COND TRUE 0 condI || condJ [L722] CALL 0 reach_error() [L693] COND FALSE 0 !(0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L693] 0 __assert_fail ("0", "triangular-longer-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 38 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: 72.1s, OverallIterations: 20, TraceHistogramMax: 10, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 58.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7645 SdHoareTripleChecker+Valid, 5.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7615 mSDsluCounter, 113 SdHoareTripleChecker+Invalid, 4.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 100 mSDsCounter, 403 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8484 IncrementalHoareTripleChecker+Invalid, 8887 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 403 mSolverCounterUnsat, 13 mSDtfsCounter, 8484 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1862 GetRequests, 1004 SyntacticMatches, 0 SemanticMatches, 858 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18051 ImplicationChecksByTransitivity, 10.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10620occurred in iteration=19, InterpolantAutomatonStates: 566, 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, 0.5s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 1349 NumberOfCodeBlocks, 1349 NumberOfCodeBlocksAsserted, 139 NumberOfCheckSat, 1830 ConstructedInterpolants, 0 QuantifiedInterpolants, 8023 SizeOfPredicates, 160 NumberOfNonLiveVariables, 1702 ConjunctsInSsa, 224 ConjunctsInUnsatCore, 43 InterpolantComputations, 7 PerfectInterpolantSequences, 45/4683 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-19 09:21:52,681 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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-longer-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:21:55,229 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:21:55,298 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-19 09:21:55,305 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:21:55,305 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:21:55,334 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:21:55,336 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:21:55,337 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:21:55,337 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:21:55,338 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:21:55,338 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:21:55,340 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:21:55,340 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:21:55,340 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:21:55,341 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:21:55,341 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:21:55,341 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:21:55,341 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:21:55,341 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:21:55,342 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:21:55,342 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:21:55,345 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:21:55,345 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:21:55,345 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:21:55,345 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:21:55,345 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-19 09:21:55,346 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:21:55,346 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-19 09:21:55,346 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:21:55,346 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:21:55,346 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:21:55,346 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:21:55,347 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:21:55,347 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:21:55,347 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:21:55,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:21:55,347 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:21:55,348 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:21:55,348 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-19 09:21:55,348 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-19 09:21:55,351 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:21:55,351 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:21:55,351 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:21:55,352 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:21:55,352 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2024-11-19 09:21:55,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:21:55,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:21:55,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:21:55,627 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:21:55,628 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:21:55,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longer-2.i [2024-11-19 09:21:57,024 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:21:57,331 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:21:57,333 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-2.i [2024-11-19 09:21:57,355 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f35e84a5/b396d693ac8e4a43b8be07d249f0b678/FLAG2475fc13e [2024-11-19 09:21:57,373 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f35e84a5/b396d693ac8e4a43b8be07d249f0b678 [2024-11-19 09:21:57,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:21:57,378 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:21:57,379 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:21:57,381 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:21:57,385 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:21:57,386 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:21:57" (1/1) ... [2024-11-19 09:21:57,387 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a62272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:57, skipping insertion in model container [2024-11-19 09:21:57,387 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:21:57" (1/1) ... [2024-11-19 09:21:57,445 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:21:57,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:21:57,867 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:21:57,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:21:57,965 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:21:57,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:57 WrapperNode [2024-11-19 09:21:57,966 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:21:57,967 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:21:57,967 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:21:57,967 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:21:57,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:57" (1/1) ... [2024-11-19 09:21:57,990 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:57" (1/1) ... [2024-11-19 09:21:58,006 INFO L138 Inliner]: procedures = 169, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2024-11-19 09:21:58,007 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:21:58,009 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:21:58,009 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:21:58,009 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:21:58,016 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:57" (1/1) ... [2024-11-19 09:21:58,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:57" (1/1) ... [2024-11-19 09:21:58,020 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:57" (1/1) ... [2024-11-19 09:21:58,041 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]. [2024-11-19 09:21:58,041 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:57" (1/1) ... [2024-11-19 09:21:58,041 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:57" (1/1) ... [2024-11-19 09:21:58,047 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:57" (1/1) ... [2024-11-19 09:21:58,053 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:57" (1/1) ... [2024-11-19 09:21:58,054 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:57" (1/1) ... [2024-11-19 09:21:58,055 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:57" (1/1) ... [2024-11-19 09:21:58,059 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:21:58,060 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:21:58,063 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:21:58,063 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:21:58,064 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:57" (1/1) ... [2024-11-19 09:21:58,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:21:58,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:21:58,102 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) [2024-11-19 09:21:58,111 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 [2024-11-19 09:21:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-19 09:21:58,169 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-19 09:21:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-19 09:21:58,169 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-19 09:21:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 09:21:58,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:21:58,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-19 09:21:58,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 09:21:58,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:21:58,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:21:58,171 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:21:58,282 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:21:58,288 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:21:58,423 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:21:58,423 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:21:58,532 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:21:58,533 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 09:21:58,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:21:58 BoogieIcfgContainer [2024-11-19 09:21:58,533 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:21:58,536 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:21:58,536 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:21:58,539 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:21:58,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:21:57" (1/3) ... [2024-11-19 09:21:58,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65442615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:21:58, skipping insertion in model container [2024-11-19 09:21:58,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:57" (2/3) ... [2024-11-19 09:21:58,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65442615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:21:58, skipping insertion in model container [2024-11-19 09:21:58,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:21:58" (3/3) ... [2024-11-19 09:21:58,543 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2024-11-19 09:21:58,556 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:21:58,556 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 09:21:58,557 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:21:58,607 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:21:58,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2024-11-19 09:21:58,663 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-19 09:21:58,664 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:21:58,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-19 09:21:58,669 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2024-11-19 09:21:58,672 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2024-11-19 09:21:58,679 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:21:58,686 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;@7f25912b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:21:58,686 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 09:21:58,697 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:21:58,697 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-11-19 09:21:58,697 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:21:58,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:58,698 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:21:58,700 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:21:58,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:58,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1944846646, now seen corresponding path program 1 times [2024-11-19 09:21:58,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:21:58,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205461394] [2024-11-19 09:21:58,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:21:58,714 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:21:58,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:21:58,717 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-19 09:21:58,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-19 09:21:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:21:58,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 09:21:58,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:21:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:21:58,835 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:21:58,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:21:58,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205461394] [2024-11-19 09:21:58,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205461394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:21:58,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:21:58,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:21:58,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137397828] [2024-11-19 09:21:58,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:21:58,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:21:58,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:21:58,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:21:58,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:21:58,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-19 09:21:58,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 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) [2024-11-19 09:21:58,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:58,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-19 09:21:58,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:21:58,938 INFO L124 PetriNetUnfolderBase]: 70/157 cut-off events. [2024-11-19 09:21:58,938 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 09:21:58,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 157 events. 70/157 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 552 event pairs, 44 based on Foata normal form. 15/161 useless extension candidates. Maximal degree in co-relation 272. Up to 113 conditions per place. [2024-11-19 09:21:58,941 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 11 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2024-11-19 09:21:58,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 78 flow [2024-11-19 09:21:58,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:21:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:21:58,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-19 09:21:58,951 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-11-19 09:21:58,953 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 52 transitions. [2024-11-19 09:21:58,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 78 flow [2024-11-19 09:21:58,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:21:58,958 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2024-11-19 09:21:58,959 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2024-11-19 09:21:58,962 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2024-11-19 09:21:58,963 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2024-11-19 09:21:58,963 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) [2024-11-19 09:21:58,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:58,963 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:21:58,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-11-19 09:21:59,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:21:59,167 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:21:59,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:59,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1944845514, now seen corresponding path program 1 times [2024-11-19 09:21:59,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:21:59,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347223903] [2024-11-19 09:21:59,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:21:59,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:21:59,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:21:59,172 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-19 09:21:59,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-19 09:21:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:21:59,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 09:21:59,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:21:59,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:21:59,351 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:21:59,351 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:21:59,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347223903] [2024-11-19 09:21:59,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347223903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:21:59,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:21:59,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:21:59,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460463553] [2024-11-19 09:21:59,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:21:59,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:21:59,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:21:59,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:21:59,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:21:59,373 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:21:59,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-11-19 09:21:59,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:59,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:21:59,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:21:59,572 INFO L124 PetriNetUnfolderBase]: 328/593 cut-off events. [2024-11-19 09:21:59,573 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:21:59,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1126 conditions, 593 events. 328/593 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2597 event pairs, 45 based on Foata normal form. 0/574 useless extension candidates. Maximal degree in co-relation 1120. Up to 243 conditions per place. [2024-11-19 09:21:59,576 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 29 selfloop transitions, 7 changer transitions 29/69 dead transitions. [2024-11-19 09:21:59,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 69 transitions, 274 flow [2024-11-19 09:21:59,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 09:21:59,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 09:21:59,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-11-19 09:21:59,578 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5646551724137931 [2024-11-19 09:21:59,578 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 8 states and 131 transitions. [2024-11-19 09:21:59,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 69 transitions, 274 flow [2024-11-19 09:21:59,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 69 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:21:59,580 INFO L231 Difference]: Finished difference. Result has 39 places, 26 transitions, 100 flow [2024-11-19 09:21:59,581 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=100, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2024-11-19 09:21:59,581 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-11-19 09:21:59,581 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 100 flow [2024-11-19 09:21:59,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-11-19 09:21:59,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:59,582 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:21:59,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-19 09:21:59,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:21:59,783 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:21:59,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:59,786 INFO L85 PathProgramCache]: Analyzing trace with hash 407958523, now seen corresponding path program 1 times [2024-11-19 09:21:59,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:21:59,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537953554] [2024-11-19 09:21:59,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:21:59,787 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:21:59,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:21:59,789 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-19 09:21:59,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-19 09:21:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:21:59,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 09:21:59,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:21:59,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:21:59,888 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:21:59,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:21:59,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537953554] [2024-11-19 09:21:59,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537953554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:21:59,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:21:59,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:21:59,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850719706] [2024-11-19 09:21:59,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:21:59,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:21:59,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:21:59,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:21:59,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:21:59,897 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:21:59,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-19 09:21:59,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:59,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:21:59,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:00,037 INFO L124 PetriNetUnfolderBase]: 247/454 cut-off events. [2024-11-19 09:22:00,037 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2024-11-19 09:22:00,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 454 events. 247/454 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1806 event pairs, 50 based on Foata normal form. 18/468 useless extension candidates. Maximal degree in co-relation 1170. Up to 190 conditions per place. [2024-11-19 09:22:00,041 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 30 selfloop transitions, 9 changer transitions 16/59 dead transitions. [2024-11-19 09:22:00,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 316 flow [2024-11-19 09:22:00,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:22:00,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:22:00,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-11-19 09:22:00,043 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.541871921182266 [2024-11-19 09:22:00,043 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 100 flow. Second operand 7 states and 110 transitions. [2024-11-19 09:22:00,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 316 flow [2024-11-19 09:22:00,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 59 transitions, 312 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-19 09:22:00,048 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 143 flow [2024-11-19 09:22:00,048 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=143, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2024-11-19 09:22:00,049 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2024-11-19 09:22:00,049 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 143 flow [2024-11-19 09:22:00,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-19 09:22:00,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:00,050 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:22:00,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-19 09:22:00,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:22:00,253 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:22:00,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:00,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1492998092, now seen corresponding path program 1 times [2024-11-19 09:22:00,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:22:00,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300071475] [2024-11-19 09:22:00,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:00,255 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:22:00,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:22:00,257 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-19 09:22:00,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-19 09:22:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:22:00,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 09:22:00,295 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:22:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:00,338 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:22:00,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:22:00,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300071475] [2024-11-19 09:22:00,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300071475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:22:00,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:22:00,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:22:00,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186141384] [2024-11-19 09:22:00,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:22:00,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:22:00,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:22:00,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:22:00,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:22:00,348 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:22:00,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-19 09:22:00,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:00,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:22:00,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:00,554 INFO L124 PetriNetUnfolderBase]: 391/725 cut-off events. [2024-11-19 09:22:00,555 INFO L125 PetriNetUnfolderBase]: For 1146/1146 co-relation queries the response was YES. [2024-11-19 09:22:00,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2115 conditions, 725 events. 391/725 cut-off events. For 1146/1146 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3195 event pairs, 95 based on Foata normal form. 27/748 useless extension candidates. Maximal degree in co-relation 2098. Up to 264 conditions per place. [2024-11-19 09:22:00,560 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 47 selfloop transitions, 11 changer transitions 20/82 dead transitions. [2024-11-19 09:22:00,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 82 transitions, 517 flow [2024-11-19 09:22:00,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:22:00,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:22:00,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-11-19 09:22:00,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-11-19 09:22:00,562 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 143 flow. Second operand 9 states and 144 transitions. [2024-11-19 09:22:00,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 82 transitions, 517 flow [2024-11-19 09:22:00,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 82 transitions, 478 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-11-19 09:22:00,568 INFO L231 Difference]: Finished difference. Result has 52 places, 36 transitions, 236 flow [2024-11-19 09:22:00,568 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=236, PETRI_PLACES=52, PETRI_TRANSITIONS=36} [2024-11-19 09:22:00,569 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2024-11-19 09:22:00,569 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 36 transitions, 236 flow [2024-11-19 09:22:00,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-19 09:22:00,569 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:00,569 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:22:00,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-11-19 09:22:00,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:22:00,770 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:22:00,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:00,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1610009804, now seen corresponding path program 2 times [2024-11-19 09:22:00,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:22:00,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101847826] [2024-11-19 09:22:00,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:22:00,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:22:00,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:22:00,777 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-19 09:22:00,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-19 09:22:00,821 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:22:00,822 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:22:00,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 09:22:00,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:22:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:00,877 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:22:00,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:22:00,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101847826] [2024-11-19 09:22:00,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101847826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:22:00,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:22:00,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:22:00,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556043011] [2024-11-19 09:22:00,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:22:00,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:22:00,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:22:00,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:22:00,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:22:00,899 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:22:00,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 36 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-19 09:22:00,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:00,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:22:00,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:01,113 INFO L124 PetriNetUnfolderBase]: 346/655 cut-off events. [2024-11-19 09:22:01,114 INFO L125 PetriNetUnfolderBase]: For 2058/2058 co-relation queries the response was YES. [2024-11-19 09:22:01,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2189 conditions, 655 events. 346/655 cut-off events. For 2058/2058 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2872 event pairs, 88 based on Foata normal form. 45/696 useless extension candidates. Maximal degree in co-relation 2166. Up to 273 conditions per place. [2024-11-19 09:22:01,117 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 40 selfloop transitions, 12 changer transitions 30/86 dead transitions. [2024-11-19 09:22:01,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 86 transitions, 655 flow [2024-11-19 09:22:01,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:22:01,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:22:01,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-11-19 09:22:01,119 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2024-11-19 09:22:01,119 INFO L175 Difference]: Start difference. First operand has 52 places, 36 transitions, 236 flow. Second operand 9 states and 140 transitions. [2024-11-19 09:22:01,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 86 transitions, 655 flow [2024-11-19 09:22:01,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 86 transitions, 595 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-11-19 09:22:01,124 INFO L231 Difference]: Finished difference. Result has 60 places, 39 transitions, 278 flow [2024-11-19 09:22:01,125 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=278, PETRI_PLACES=60, PETRI_TRANSITIONS=39} [2024-11-19 09:22:01,125 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2024-11-19 09:22:01,125 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 39 transitions, 278 flow [2024-11-19 09:22:01,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-19 09:22:01,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:01,126 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:22:01,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-11-19 09:22:01,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:22:01,329 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:22:01,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:01,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1235422649, now seen corresponding path program 1 times [2024-11-19 09:22:01,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:22:01,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1978981821] [2024-11-19 09:22:01,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:01,334 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:22:01,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:22:01,339 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-19 09:22:01,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-19 09:22:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:22:01,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 09:22:01,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:22:01,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:01,496 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:22:01,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:22:01,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1978981821] [2024-11-19 09:22:01,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1978981821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:22:01,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:22:01,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 09:22:01,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150929511] [2024-11-19 09:22:01,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:22:01,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:22:01,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:22:01,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:22:01,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:22:01,506 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:22:01,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 39 transitions, 278 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2024-11-19 09:22:01,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:01,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:22:01,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:01,736 INFO L124 PetriNetUnfolderBase]: 427/806 cut-off events. [2024-11-19 09:22:01,737 INFO L125 PetriNetUnfolderBase]: For 3492/3492 co-relation queries the response was YES. [2024-11-19 09:22:01,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2902 conditions, 806 events. 427/806 cut-off events. For 3492/3492 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3713 event pairs, 122 based on Foata normal form. 27/829 useless extension candidates. Maximal degree in co-relation 2874. Up to 316 conditions per place. [2024-11-19 09:22:01,741 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 51 selfloop transitions, 12 changer transitions 26/93 dead transitions. [2024-11-19 09:22:01,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 93 transitions, 752 flow [2024-11-19 09:22:01,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:22:01,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:22:01,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-11-19 09:22:01,743 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5448275862068965 [2024-11-19 09:22:01,743 INFO L175 Difference]: Start difference. First operand has 60 places, 39 transitions, 278 flow. Second operand 10 states and 158 transitions. [2024-11-19 09:22:01,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 93 transitions, 752 flow [2024-11-19 09:22:01,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 93 transitions, 718 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-11-19 09:22:01,750 INFO L231 Difference]: Finished difference. Result has 68 places, 43 transitions, 345 flow [2024-11-19 09:22:01,750 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=345, PETRI_PLACES=68, PETRI_TRANSITIONS=43} [2024-11-19 09:22:01,751 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2024-11-19 09:22:01,751 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 43 transitions, 345 flow [2024-11-19 09:22:01,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2024-11-19 09:22:01,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:01,751 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:22:01,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-11-19 09:22:01,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:22:01,952 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:22:01,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:01,953 INFO L85 PathProgramCache]: Analyzing trace with hash -14089357, now seen corresponding path program 2 times [2024-11-19 09:22:01,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:22:01,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58504773] [2024-11-19 09:22:01,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:22:01,953 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:22:01,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:22:01,956 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-19 09:22:01,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-19 09:22:01,991 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:22:01,991 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:22:01,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 09:22:01,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:22:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:02,045 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:22:02,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:22:02,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58504773] [2024-11-19 09:22:02,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58504773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:22:02,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:22:02,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 09:22:02,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155980415] [2024-11-19 09:22:02,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:22:02,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:22:02,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:22:02,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:22:02,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:22:02,056 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:22:02,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 43 transitions, 345 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2024-11-19 09:22:02,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:02,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:22:02,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:02,294 INFO L124 PetriNetUnfolderBase]: 463/891 cut-off events. [2024-11-19 09:22:02,294 INFO L125 PetriNetUnfolderBase]: For 6473/6473 co-relation queries the response was YES. [2024-11-19 09:22:02,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3609 conditions, 891 events. 463/891 cut-off events. For 6473/6473 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4355 event pairs, 120 based on Foata normal form. 27/914 useless extension candidates. Maximal degree in co-relation 3577. Up to 340 conditions per place. [2024-11-19 09:22:02,325 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 56 selfloop transitions, 17 changer transitions 30/107 dead transitions. [2024-11-19 09:22:02,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 107 transitions, 978 flow [2024-11-19 09:22:02,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:22:02,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:22:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-11-19 09:22:02,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2024-11-19 09:22:02,326 INFO L175 Difference]: Start difference. First operand has 68 places, 43 transitions, 345 flow. Second operand 12 states and 186 transitions. [2024-11-19 09:22:02,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 107 transitions, 978 flow [2024-11-19 09:22:02,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 107 transitions, 842 flow, removed 59 selfloop flow, removed 7 redundant places. [2024-11-19 09:22:02,333 INFO L231 Difference]: Finished difference. Result has 75 places, 48 transitions, 395 flow [2024-11-19 09:22:02,334 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=395, PETRI_PLACES=75, PETRI_TRANSITIONS=48} [2024-11-19 09:22:02,334 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-11-19 09:22:02,334 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 48 transitions, 395 flow [2024-11-19 09:22:02,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2024-11-19 09:22:02,334 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:02,335 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:22:02,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-11-19 09:22:02,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:22:02,535 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:22:02,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:02,536 INFO L85 PathProgramCache]: Analyzing trace with hash 476818575, now seen corresponding path program 3 times [2024-11-19 09:22:02,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:22:02,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789285343] [2024-11-19 09:22:02,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:22:02,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:22:02,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:22:02,539 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-19 09:22:02,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-19 09:22:02,592 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 09:22:02,592 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:22:02,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:22:02,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:22:02,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:02,680 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:22:02,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:22:02,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1789285343] [2024-11-19 09:22:02,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1789285343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:22:02,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:22:02,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 09:22:02,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116568739] [2024-11-19 09:22:02,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:22:02,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:22:02,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:22:02,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:22:02,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:22:02,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:22:02,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 48 transitions, 395 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2024-11-19 09:22:02,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:02,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:22:02,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:02,904 INFO L124 PetriNetUnfolderBase]: 436/839 cut-off events. [2024-11-19 09:22:02,904 INFO L125 PetriNetUnfolderBase]: For 6137/6137 co-relation queries the response was YES. [2024-11-19 09:22:02,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3329 conditions, 839 events. 436/839 cut-off events. For 6137/6137 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4049 event pairs, 152 based on Foata normal form. 27/862 useless extension candidates. Maximal degree in co-relation 3295. Up to 555 conditions per place. [2024-11-19 09:22:02,910 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 54 selfloop transitions, 9 changer transitions 29/96 dead transitions. [2024-11-19 09:22:02,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 96 transitions, 875 flow [2024-11-19 09:22:02,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:22:02,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:22:02,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-11-19 09:22:02,922 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5275862068965518 [2024-11-19 09:22:02,922 INFO L175 Difference]: Start difference. First operand has 75 places, 48 transitions, 395 flow. Second operand 10 states and 153 transitions. [2024-11-19 09:22:02,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 96 transitions, 875 flow [2024-11-19 09:22:02,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 96 transitions, 804 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-11-19 09:22:02,931 INFO L231 Difference]: Finished difference. Result has 79 places, 50 transitions, 405 flow [2024-11-19 09:22:02,931 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=405, PETRI_PLACES=79, PETRI_TRANSITIONS=50} [2024-11-19 09:22:02,932 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-11-19 09:22:02,932 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 50 transitions, 405 flow [2024-11-19 09:22:02,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2024-11-19 09:22:02,932 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:02,932 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:22:02,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-11-19 09:22:03,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:22:03,139 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:22:03,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:03,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1841714377, now seen corresponding path program 4 times [2024-11-19 09:22:03,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:22:03,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978847204] [2024-11-19 09:22:03,140 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:22:03,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:22:03,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:22:03,143 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-19 09:22:03,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-19 09:22:03,176 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:22:03,176 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:22:03,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 09:22:03,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:22:03,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:03,226 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:22:03,226 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:22:03,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978847204] [2024-11-19 09:22:03,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978847204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:22:03,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:22:03,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 09:22:03,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111054956] [2024-11-19 09:22:03,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:22:03,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:22:03,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:22:03,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:22:03,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:22:03,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:22:03,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 50 transitions, 405 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2024-11-19 09:22:03,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:03,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:22:03,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:03,527 INFO L124 PetriNetUnfolderBase]: 463/887 cut-off events. [2024-11-19 09:22:03,527 INFO L125 PetriNetUnfolderBase]: For 6613/6613 co-relation queries the response was YES. [2024-11-19 09:22:03,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3508 conditions, 887 events. 463/887 cut-off events. For 6613/6613 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4332 event pairs, 152 based on Foata normal form. 18/901 useless extension candidates. Maximal degree in co-relation 3472. Up to 456 conditions per place. [2024-11-19 09:22:03,534 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 54 selfloop transitions, 16 changer transitions 21/95 dead transitions. [2024-11-19 09:22:03,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 95 transitions, 883 flow [2024-11-19 09:22:03,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:22:03,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:22:03,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-11-19 09:22:03,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2024-11-19 09:22:03,539 INFO L175 Difference]: Start difference. First operand has 79 places, 50 transitions, 405 flow. Second operand 9 states and 140 transitions. [2024-11-19 09:22:03,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 95 transitions, 883 flow [2024-11-19 09:22:03,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 95 transitions, 827 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-11-19 09:22:03,566 INFO L231 Difference]: Finished difference. Result has 81 places, 53 transitions, 468 flow [2024-11-19 09:22:03,566 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=468, PETRI_PLACES=81, PETRI_TRANSITIONS=53} [2024-11-19 09:22:03,567 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-11-19 09:22:03,567 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 53 transitions, 468 flow [2024-11-19 09:22:03,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2024-11-19 09:22:03,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:03,567 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:22:03,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-11-19 09:22:03,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:22:03,770 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:22:03,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:03,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1638196562, now seen corresponding path program 1 times [2024-11-19 09:22:03,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:22:03,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467521310] [2024-11-19 09:22:03,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:03,771 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:22:03,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:22:03,773 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-19 09:22:03,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-19 09:22:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:22:03,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:22:03,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:22:03,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:03,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:22:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:04,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:22:04,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467521310] [2024-11-19 09:22:04,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467521310] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:22:04,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:22:04,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-19 09:22:04,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163082461] [2024-11-19 09:22:04,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 09:22:04,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 09:22:04,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:22:04,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 09:22:04,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-19 09:22:04,058 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:22:04,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 53 transitions, 468 flow. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 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) [2024-11-19 09:22:04,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:04,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:22:04,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:04,735 INFO L124 PetriNetUnfolderBase]: 697/1284 cut-off events. [2024-11-19 09:22:04,735 INFO L125 PetriNetUnfolderBase]: For 14498/14498 co-relation queries the response was YES. [2024-11-19 09:22:04,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5775 conditions, 1284 events. 697/1284 cut-off events. For 14498/14498 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6066 event pairs, 36 based on Foata normal form. 45/1325 useless extension candidates. Maximal degree in co-relation 5738. Up to 191 conditions per place. [2024-11-19 09:22:04,742 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 69 selfloop transitions, 43 changer transitions 60/176 dead transitions. [2024-11-19 09:22:04,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 176 transitions, 1752 flow [2024-11-19 09:22:04,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 09:22:04,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-19 09:22:04,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 323 transitions. [2024-11-19 09:22:04,743 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5303776683087028 [2024-11-19 09:22:04,743 INFO L175 Difference]: Start difference. First operand has 81 places, 53 transitions, 468 flow. Second operand 21 states and 323 transitions. [2024-11-19 09:22:04,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 176 transitions, 1752 flow [2024-11-19 09:22:04,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 176 transitions, 1659 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-11-19 09:22:04,758 INFO L231 Difference]: Finished difference. Result has 103 places, 69 transitions, 885 flow [2024-11-19 09:22:04,758 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=885, PETRI_PLACES=103, PETRI_TRANSITIONS=69} [2024-11-19 09:22:04,759 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-11-19 09:22:04,759 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 69 transitions, 885 flow [2024-11-19 09:22:04,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 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) [2024-11-19 09:22:04,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:04,759 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:22:04,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-11-19 09:22:04,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:22:04,960 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:22:04,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:04,960 INFO L85 PathProgramCache]: Analyzing trace with hash -389170009, now seen corresponding path program 1 times [2024-11-19 09:22:04,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:22:04,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014946764] [2024-11-19 09:22:04,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:04,961 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:22:04,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:22:04,963 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-19 09:22:04,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-19 09:22:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:22:04,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:22:04,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:22:05,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:05,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:22:05,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:05,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:22:05,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014946764] [2024-11-19 09:22:05,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014946764] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:22:05,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:22:05,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-19 09:22:05,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537515924] [2024-11-19 09:22:05,178 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 09:22:05,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 09:22:05,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:22:05,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 09:22:05,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-19 09:22:05,209 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:22:05,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 69 transitions, 885 flow. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 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) [2024-11-19 09:22:05,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:05,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:22:05,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:05,804 INFO L124 PetriNetUnfolderBase]: 787/1487 cut-off events. [2024-11-19 09:22:05,804 INFO L125 PetriNetUnfolderBase]: For 27581/27581 co-relation queries the response was YES. [2024-11-19 09:22:05,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7600 conditions, 1487 events. 787/1487 cut-off events. For 27581/27581 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7270 event pairs, 239 based on Foata normal form. 63/1546 useless extension candidates. Maximal degree in co-relation 7555. Up to 828 conditions per place. [2024-11-19 09:22:05,813 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 85 selfloop transitions, 19 changer transitions 67/175 dead transitions. [2024-11-19 09:22:05,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 175 transitions, 2251 flow [2024-11-19 09:22:05,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 09:22:05,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-19 09:22:05,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 288 transitions. [2024-11-19 09:22:05,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5226860254083484 [2024-11-19 09:22:05,814 INFO L175 Difference]: Start difference. First operand has 103 places, 69 transitions, 885 flow. Second operand 19 states and 288 transitions. [2024-11-19 09:22:05,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 175 transitions, 2251 flow [2024-11-19 09:22:05,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 175 transitions, 1697 flow, removed 258 selfloop flow, removed 14 redundant places. [2024-11-19 09:22:05,845 INFO L231 Difference]: Finished difference. Result has 115 places, 75 transitions, 766 flow [2024-11-19 09:22:05,845 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=766, PETRI_PLACES=115, PETRI_TRANSITIONS=75} [2024-11-19 09:22:05,845 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-11-19 09:22:05,846 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 75 transitions, 766 flow [2024-11-19 09:22:05,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 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) [2024-11-19 09:22:05,846 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:05,847 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:22:05,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2024-11-19 09:22:06,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:22:06,047 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:22:06,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:06,048 INFO L85 PathProgramCache]: Analyzing trace with hash -295210743, now seen corresponding path program 2 times [2024-11-19 09:22:06,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:22:06,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829509721] [2024-11-19 09:22:06,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:22:06,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:22:06,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:22:06,051 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-19 09:22:06,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-11-19 09:22:06,084 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:22:06,084 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:22:06,085 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:22:06,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:22:06,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:06,208 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:22:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:06,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:22:06,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829509721] [2024-11-19 09:22:06,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829509721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:22:06,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:22:06,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-19 09:22:06,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654437931] [2024-11-19 09:22:06,501 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 09:22:06,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 09:22:06,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:22:06,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 09:22:06,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-19 09:22:06,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:22:06,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 75 transitions, 766 flow. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 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) [2024-11-19 09:22:06,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:06,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:22:06,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:07,710 INFO L124 PetriNetUnfolderBase]: 1246/2341 cut-off events. [2024-11-19 09:22:07,711 INFO L125 PetriNetUnfolderBase]: For 56993/56993 co-relation queries the response was YES. [2024-11-19 09:22:07,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13174 conditions, 2341 events. 1246/2341 cut-off events. For 56993/56993 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 12828 event pairs, 88 based on Foata normal form. 63/2400 useless extension candidates. Maximal degree in co-relation 13124. Up to 478 conditions per place. [2024-11-19 09:22:07,732 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 129 selfloop transitions, 54 changer transitions 59/246 dead transitions. [2024-11-19 09:22:07,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 246 transitions, 3242 flow [2024-11-19 09:22:07,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-19 09:22:07,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-19 09:22:07,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 421 transitions. [2024-11-19 09:22:07,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5376756066411239 [2024-11-19 09:22:07,738 INFO L175 Difference]: Start difference. First operand has 115 places, 75 transitions, 766 flow. Second operand 27 states and 421 transitions. [2024-11-19 09:22:07,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 246 transitions, 3242 flow [2024-11-19 09:22:07,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 246 transitions, 2735 flow, removed 241 selfloop flow, removed 12 redundant places. [2024-11-19 09:22:07,774 INFO L231 Difference]: Finished difference. Result has 139 places, 97 transitions, 1308 flow [2024-11-19 09:22:07,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1308, PETRI_PLACES=139, PETRI_TRANSITIONS=97} [2024-11-19 09:22:07,775 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-11-19 09:22:07,775 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 97 transitions, 1308 flow [2024-11-19 09:22:07,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 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) [2024-11-19 09:22:07,775 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:07,776 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:22:07,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2024-11-19 09:22:07,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:22:07,979 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:22:07,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:07,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1659104887, now seen corresponding path program 3 times [2024-11-19 09:22:07,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:22:07,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877766067] [2024-11-19 09:22:07,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:22:07,980 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:22:07,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:22:07,982 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-19 09:22:07,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-19 09:22:08,034 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:22:08,034 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:22:08,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:22:08,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:22:08,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:08,127 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:22:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:08,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:22:08,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877766067] [2024-11-19 09:22:08,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877766067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:22:08,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:22:08,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-19 09:22:08,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451166169] [2024-11-19 09:22:08,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 09:22:08,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 09:22:08,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:22:08,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 09:22:08,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-19 09:22:08,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:22:08,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 97 transitions, 1308 flow. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 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) [2024-11-19 09:22:08,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:08,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:22:08,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:09,302 INFO L124 PetriNetUnfolderBase]: 1318/2463 cut-off events. [2024-11-19 09:22:09,302 INFO L125 PetriNetUnfolderBase]: For 90317/90317 co-relation queries the response was YES. [2024-11-19 09:22:09,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15105 conditions, 2463 events. 1318/2463 cut-off events. For 90317/90317 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 13451 event pairs, 122 based on Foata normal form. 162/2621 useless extension candidates. Maximal degree in co-relation 15045. Up to 454 conditions per place. [2024-11-19 09:22:09,320 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 99 selfloop transitions, 68 changer transitions 95/266 dead transitions. [2024-11-19 09:22:09,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 266 transitions, 4146 flow [2024-11-19 09:22:09,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 09:22:09,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-19 09:22:09,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 383 transitions. [2024-11-19 09:22:09,322 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5282758620689655 [2024-11-19 09:22:09,322 INFO L175 Difference]: Start difference. First operand has 139 places, 97 transitions, 1308 flow. Second operand 25 states and 383 transitions. [2024-11-19 09:22:09,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 266 transitions, 4146 flow [2024-11-19 09:22:09,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 266 transitions, 3311 flow, removed 402 selfloop flow, removed 14 redundant places. [2024-11-19 09:22:09,401 INFO L231 Difference]: Finished difference. Result has 158 places, 115 transitions, 1613 flow [2024-11-19 09:22:09,401 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1613, PETRI_PLACES=158, PETRI_TRANSITIONS=115} [2024-11-19 09:22:09,402 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2024-11-19 09:22:09,402 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 115 transitions, 1613 flow [2024-11-19 09:22:09,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 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) [2024-11-19 09:22:09,402 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:09,402 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:22:09,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2024-11-19 09:22:09,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:22:09,605 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:22:09,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:09,606 INFO L85 PathProgramCache]: Analyzing trace with hash -627287686, now seen corresponding path program 1 times [2024-11-19 09:22:09,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:22:09,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920370147] [2024-11-19 09:22:09,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:09,606 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:22:09,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:22:09,609 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-19 09:22:09,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-11-19 09:22:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:22:09,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:22:09,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:22:09,739 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:22:09,740 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:22:09,975 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:22:09,976 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:22:09,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920370147] [2024-11-19 09:22:09,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920370147] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:22:09,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:22:09,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2024-11-19 09:22:09,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254404031] [2024-11-19 09:22:09,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 09:22:09,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 09:22:09,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:22:09,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 09:22:09,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-11-19 09:22:10,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:22:10,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 115 transitions, 1613 flow. Second operand has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:22:10,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:10,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:22:10,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand