./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.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 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:05:41,381 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:05:41,432 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:05:41,436 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:05:41,438 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:05:41,467 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:05:41,467 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:05:41,468 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:05:41,468 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:05:41,469 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:05:41,469 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:05:41,469 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:05:41,470 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:05:41,470 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:05:41,471 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:05:41,471 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:05:41,472 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:05:41,472 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:05:41,472 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:05:41,473 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:05:41,473 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:05:41,477 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:05:41,477 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:05:41,477 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:05:41,478 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:05:41,478 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:05:41,478 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:05:41,478 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:05:41,479 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:05:41,479 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:05:41,479 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:05:41,480 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:05:41,483 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:05:41,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:05:41,483 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:05:41,484 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:05:41,484 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:05:41,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:05:41,484 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:05:41,485 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:05:41,485 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:05:41,488 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:05:41,488 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a [2024-11-10 18:05:41,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:05:41,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:05:41,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:05:41,821 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:05:41,821 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:05:41,823 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2024-11-10 18:05:43,312 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:05:43,672 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:05:43,676 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2024-11-10 18:05:43,698 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a0f8231c/a844d28038324554882caa625f87088e/FLAG882f146be [2024-11-10 18:05:43,907 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a0f8231c/a844d28038324554882caa625f87088e [2024-11-10 18:05:43,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:05:43,912 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:05:43,913 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:05:43,913 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:05:43,921 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:05:43,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:05:43" (1/1) ... [2024-11-10 18:05:43,923 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30cc3774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:43, skipping insertion in model container [2024-11-10 18:05:43,923 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:05:43" (1/1) ... [2024-11-10 18:05:43,975 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:05:44,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:05:44,510 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:05:44,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:05:44,634 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:05:44,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:44 WrapperNode [2024-11-10 18:05:44,635 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:05:44,637 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:05:44,637 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:05:44,637 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:05:44,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:44" (1/1) ... [2024-11-10 18:05:44,664 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:44" (1/1) ... [2024-11-10 18:05:44,702 INFO L138 Inliner]: procedures = 263, calls = 74, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 140 [2024-11-10 18:05:44,706 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:05:44,707 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:05:44,707 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:05:44,707 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:05:44,721 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:44" (1/1) ... [2024-11-10 18:05:44,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:44" (1/1) ... [2024-11-10 18:05:44,726 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:44" (1/1) ... [2024-11-10 18:05:44,744 INFO L175 MemorySlicer]: Split 66 memory accesses to 1 slices as follows [66]. 100 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [60]. The 3 writes are split as follows [3]. [2024-11-10 18:05:44,745 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:44" (1/1) ... [2024-11-10 18:05:44,745 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:44" (1/1) ... [2024-11-10 18:05:44,754 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:44" (1/1) ... [2024-11-10 18:05:44,755 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:44" (1/1) ... [2024-11-10 18:05:44,757 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:44" (1/1) ... [2024-11-10 18:05:44,759 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:44" (1/1) ... [2024-11-10 18:05:44,764 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:05:44,765 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:05:44,765 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:05:44,766 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:05:44,767 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:44" (1/1) ... [2024-11-10 18:05:44,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:05:44,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:05:44,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 18:05:44,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 18:05:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 18:05:44,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 18:05:44,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 18:05:44,869 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 18:05:44,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:05:44,869 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-10 18:05:44,869 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-10 18:05:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:05:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:05:44,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:05:44,872 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:05:45,168 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:05:45,171 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:05:45,567 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:05:45,567 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:05:45,913 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:05:45,913 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:05:45,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:05:45 BoogieIcfgContainer [2024-11-10 18:05:45,914 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:05:45,916 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:05:45,916 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:05:45,920 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:05:45,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:05:43" (1/3) ... [2024-11-10 18:05:45,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c94025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:05:45, skipping insertion in model container [2024-11-10 18:05:45,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:44" (2/3) ... [2024-11-10 18:05:45,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c94025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:05:45, skipping insertion in model container [2024-11-10 18:05:45,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:05:45" (3/3) ... [2024-11-10 18:05:45,924 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_05-funloop_hard2.i [2024-11-10 18:05:45,968 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:05:45,972 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2024-11-10 18:05:45,972 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:05:46,058 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 18:05:46,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 106 flow [2024-11-10 18:05:46,123 INFO L124 PetriNetUnfolderBase]: 6/50 cut-off events. [2024-11-10 18:05:46,124 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:05:46,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 50 events. 6/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 134 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-11-10 18:05:46,129 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 51 transitions, 106 flow [2024-11-10 18:05:46,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 50 transitions, 103 flow [2024-11-10 18:05:46,147 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:05:46,155 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;@3c14f89b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:05:46,157 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-10 18:05:46,168 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:05:46,168 INFO L124 PetriNetUnfolderBase]: 4/23 cut-off events. [2024-11-10 18:05:46,168 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:05:46,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:05:46,170 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:05:46,171 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-10 18:05:46,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:05:46,177 INFO L85 PathProgramCache]: Analyzing trace with hash -427074776, now seen corresponding path program 1 times [2024-11-10 18:05:46,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:05:46,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604926139] [2024-11-10 18:05:46,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:46,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:05:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:46,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:05:46,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:05:46,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604926139] [2024-11-10 18:05:46,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604926139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:05:46,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:05:46,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:05:46,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410212547] [2024-11-10 18:05:46,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:05:46,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 18:05:46,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:05:46,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 18:05:46,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 18:05:46,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 51 [2024-11-10 18:05:46,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 50 transitions, 103 flow. Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:46,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:05:46,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 51 [2024-11-10 18:05:46,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:05:46,655 INFO L124 PetriNetUnfolderBase]: 106/307 cut-off events. [2024-11-10 18:05:46,655 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:05:46,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 307 events. 106/307 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1664 event pairs, 84 based on Foata normal form. 22/294 useless extension candidates. Maximal degree in co-relation 509. Up to 213 conditions per place. [2024-11-10 18:05:46,666 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 25 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2024-11-10 18:05:46,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 147 flow [2024-11-10 18:05:46,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 18:05:46,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 18:05:46,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 74 transitions. [2024-11-10 18:05:46,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7254901960784313 [2024-11-10 18:05:46,684 INFO L175 Difference]: Start difference. First operand has 48 places, 50 transitions, 103 flow. Second operand 2 states and 74 transitions. [2024-11-10 18:05:46,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 147 flow [2024-11-10 18:05:46,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:05:46,688 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 96 flow [2024-11-10 18:05:46,691 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=96, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2024-11-10 18:05:46,694 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2024-11-10 18:05:46,695 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 96 flow [2024-11-10 18:05:46,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:46,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:05:46,696 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:05:46,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:05:46,696 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-10 18:05:46,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:05:46,697 INFO L85 PathProgramCache]: Analyzing trace with hash -352057538, now seen corresponding path program 1 times [2024-11-10 18:05:46,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:05:46,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617818810] [2024-11-10 18:05:46,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:46,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:05:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:46,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:05:46,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:05:46,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617818810] [2024-11-10 18:05:46,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617818810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:05:46,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:05:46,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:05:46,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375322899] [2024-11-10 18:05:46,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:05:46,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:05:46,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:05:46,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:05:46,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:05:46,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-11-10 18:05:46,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:46,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:05:46,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-11-10 18:05:46,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:05:47,018 INFO L124 PetriNetUnfolderBase]: 106/309 cut-off events. [2024-11-10 18:05:47,018 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:05:47,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 309 events. 106/309 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1663 event pairs, 84 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 525. Up to 214 conditions per place. [2024-11-10 18:05:47,023 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 25 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2024-11-10 18:05:47,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 152 flow [2024-11-10 18:05:47,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:05:47,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:05:47,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-11-10 18:05:47,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6143790849673203 [2024-11-10 18:05:47,027 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 96 flow. Second operand 3 states and 94 transitions. [2024-11-10 18:05:47,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 152 flow [2024-11-10 18:05:47,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 152 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:05:47,030 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 108 flow [2024-11-10 18:05:47,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2024-11-10 18:05:47,031 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2024-11-10 18:05:47,031 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 108 flow [2024-11-10 18:05:47,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:47,032 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:05:47,032 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:05:47,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:05:47,035 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-10 18:05:47,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:05:47,036 INFO L85 PathProgramCache]: Analyzing trace with hash 356117505, now seen corresponding path program 1 times [2024-11-10 18:05:47,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:05:47,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353956779] [2024-11-10 18:05:47,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:47,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:05:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:47,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:05:47,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:05:47,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353956779] [2024-11-10 18:05:47,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353956779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:05:47,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052088319] [2024-11-10 18:05:47,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:47,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:05:47,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:05:47,194 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:05:47,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 18:05:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:47,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 18:05:47,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:05:47,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:05:47,367 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:05:47,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:05:47,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052088319] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:05:47,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:05:47,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-10 18:05:47,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41267126] [2024-11-10 18:05:47,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:05:47,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 18:05:47,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:05:47,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 18:05:47,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-10 18:05:47,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-11-10 18:05:47,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:47,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:05:47,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-11-10 18:05:47,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:05:47,645 INFO L124 PetriNetUnfolderBase]: 106/315 cut-off events. [2024-11-10 18:05:47,645 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-10 18:05:47,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 315 events. 106/315 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1659 event pairs, 84 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 542. Up to 214 conditions per place. [2024-11-10 18:05:47,653 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 25 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2024-11-10 18:05:47,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 51 transitions, 180 flow [2024-11-10 18:05:47,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:05:47,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:05:47,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-11-10 18:05:47,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5392156862745098 [2024-11-10 18:05:47,658 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 108 flow. Second operand 6 states and 165 transitions. [2024-11-10 18:05:47,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 51 transitions, 180 flow [2024-11-10 18:05:47,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:05:47,662 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 142 flow [2024-11-10 18:05:47,663 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=142, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-11-10 18:05:47,663 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 10 predicate places. [2024-11-10 18:05:47,664 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 142 flow [2024-11-10 18:05:47,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:47,665 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:05:47,665 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:05:47,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 18:05:47,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:05:47,866 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-10 18:05:47,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:05:47,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1870888394, now seen corresponding path program 2 times [2024-11-10 18:05:47,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:05:47,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165468868] [2024-11-10 18:05:47,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:47,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:05:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 18:05:48,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:05:48,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165468868] [2024-11-10 18:05:48,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165468868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:05:48,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:05:48,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:05:48,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931796253] [2024-11-10 18:05:48,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:05:48,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:05:48,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:05:48,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:05:48,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:05:48,109 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-11-10 18:05:48,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:48,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:05:48,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-11-10 18:05:48,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:05:48,246 INFO L124 PetriNetUnfolderBase]: 106/296 cut-off events. [2024-11-10 18:05:48,247 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-10 18:05:48,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 296 events. 106/296 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1457 event pairs, 24 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 533. Up to 130 conditions per place. [2024-11-10 18:05:48,250 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 39 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2024-11-10 18:05:48,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 244 flow [2024-11-10 18:05:48,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:05:48,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:05:48,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-10 18:05:48,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2024-11-10 18:05:48,253 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 142 flow. Second operand 4 states and 120 transitions. [2024-11-10 18:05:48,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 244 flow [2024-11-10 18:05:48,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 236 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-10 18:05:48,260 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 132 flow [2024-11-10 18:05:48,260 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2024-11-10 18:05:48,261 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 8 predicate places. [2024-11-10 18:05:48,262 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 132 flow [2024-11-10 18:05:48,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:48,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:05:48,262 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:05:48,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 18:05:48,263 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-10 18:05:48,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:05:48,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1870888395, now seen corresponding path program 1 times [2024-11-10 18:05:48,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:05:48,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812668370] [2024-11-10 18:05:48,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:48,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:05:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:48,429 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:05:48,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:05:48,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812668370] [2024-11-10 18:05:48,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812668370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:05:48,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550169484] [2024-11-10 18:05:48,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:48,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:05:48,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:05:48,433 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:05:48,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 18:05:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:48,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 18:05:48,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:05:48,564 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:05:48,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:05:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:05:48,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550169484] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:05:48,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:05:48,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-10 18:05:48,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589757376] [2024-11-10 18:05:48,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:05:48,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 18:05:48,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:05:48,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 18:05:48,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-10 18:05:48,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-11-10 18:05:48,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 132 flow. Second operand has 13 states, 13 states have (on average 23.46153846153846) internal successors, (305), 13 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:48,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:05:48,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-11-10 18:05:48,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:05:48,756 INFO L124 PetriNetUnfolderBase]: 106/309 cut-off events. [2024-11-10 18:05:48,757 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2024-11-10 18:05:48,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 309 events. 106/309 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1493 event pairs, 84 based on Foata normal form. 6/298 useless extension candidates. Maximal degree in co-relation 588. Up to 214 conditions per place. [2024-11-10 18:05:48,759 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 25 selfloop transitions, 11 changer transitions 0/53 dead transitions. [2024-11-10 18:05:48,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 53 transitions, 240 flow [2024-11-10 18:05:48,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 18:05:48,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 18:05:48,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 306 transitions. [2024-11-10 18:05:48,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-10 18:05:48,763 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 132 flow. Second operand 12 states and 306 transitions. [2024-11-10 18:05:48,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 53 transitions, 240 flow [2024-11-10 18:05:48,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 53 transitions, 234 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:05:48,766 INFO L231 Difference]: Finished difference. Result has 70 places, 53 transitions, 210 flow [2024-11-10 18:05:48,766 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=210, PETRI_PLACES=70, PETRI_TRANSITIONS=53} [2024-11-10 18:05:48,767 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 22 predicate places. [2024-11-10 18:05:48,767 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 53 transitions, 210 flow [2024-11-10 18:05:48,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.46153846153846) internal successors, (305), 13 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:48,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:05:48,768 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:05:48,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 18:05:48,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:05:48,973 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-10 18:05:48,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:05:48,974 INFO L85 PathProgramCache]: Analyzing trace with hash -809959139, now seen corresponding path program 2 times [2024-11-10 18:05:48,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:05:48,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133686009] [2024-11-10 18:05:48,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:48,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:05:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:49,234 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-10 18:05:49,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:05:49,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133686009] [2024-11-10 18:05:49,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133686009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:05:49,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:05:49,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:05:49,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633228131] [2024-11-10 18:05:49,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:05:49,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:05:49,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:05:49,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:05:49,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:05:49,269 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-11-10 18:05:49,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 53 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:49,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:05:49,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-11-10 18:05:49,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:05:49,482 INFO L124 PetriNetUnfolderBase]: 223/539 cut-off events. [2024-11-10 18:05:49,483 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2024-11-10 18:05:49,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1063 conditions, 539 events. 223/539 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2587 event pairs, 91 based on Foata normal form. 0/487 useless extension candidates. Maximal degree in co-relation 1048. Up to 300 conditions per place. [2024-11-10 18:05:49,487 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 66 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2024-11-10 18:05:49,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 83 transitions, 410 flow [2024-11-10 18:05:49,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:05:49,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:05:49,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-11-10 18:05:49,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6235294117647059 [2024-11-10 18:05:49,489 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 210 flow. Second operand 5 states and 159 transitions. [2024-11-10 18:05:49,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 83 transitions, 410 flow [2024-11-10 18:05:49,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 83 transitions, 374 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-11-10 18:05:49,496 INFO L231 Difference]: Finished difference. Result has 69 places, 53 transitions, 196 flow [2024-11-10 18:05:49,496 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=69, PETRI_TRANSITIONS=53} [2024-11-10 18:05:49,497 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 21 predicate places. [2024-11-10 18:05:49,497 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 53 transitions, 196 flow [2024-11-10 18:05:49,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:49,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:05:49,498 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:05:49,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 18:05:49,498 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-10 18:05:49,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:05:49,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1841322435, now seen corresponding path program 1 times [2024-11-10 18:05:49,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:05:49,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120576512] [2024-11-10 18:05:49,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:49,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:05:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-10 18:05:49,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:05:49,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120576512] [2024-11-10 18:05:49,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120576512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:05:49,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:05:49,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:05:49,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791891183] [2024-11-10 18:05:49,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:05:49,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:05:49,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:05:49,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:05:49,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:05:49,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-11-10 18:05:49,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 53 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:49,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:05:49,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-11-10 18:05:49,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:05:50,096 INFO L124 PetriNetUnfolderBase]: 310/796 cut-off events. [2024-11-10 18:05:50,097 INFO L125 PetriNetUnfolderBase]: For 264/279 co-relation queries the response was YES. [2024-11-10 18:05:50,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1645 conditions, 796 events. 310/796 cut-off events. For 264/279 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4249 event pairs, 195 based on Foata normal form. 0/752 useless extension candidates. Maximal degree in co-relation 1628. Up to 462 conditions per place. [2024-11-10 18:05:50,104 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 62 selfloop transitions, 4 changer transitions 0/79 dead transitions. [2024-11-10 18:05:50,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 79 transitions, 408 flow [2024-11-10 18:05:50,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:05:50,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:05:50,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-11-10 18:05:50,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5607843137254902 [2024-11-10 18:05:50,106 INFO L175 Difference]: Start difference. First operand has 69 places, 53 transitions, 196 flow. Second operand 5 states and 143 transitions. [2024-11-10 18:05:50,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 79 transitions, 408 flow [2024-11-10 18:05:50,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 79 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:05:50,113 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 218 flow [2024-11-10 18:05:50,113 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2024-11-10 18:05:50,114 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 25 predicate places. [2024-11-10 18:05:50,114 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 218 flow [2024-11-10 18:05:50,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:50,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:05:50,115 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:05:50,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 18:05:50,115 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-10 18:05:50,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:05:50,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1841322436, now seen corresponding path program 1 times [2024-11-10 18:05:50,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:05:50,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868339366] [2024-11-10 18:05:50,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:50,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:05:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-10 18:05:50,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:05:50,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868339366] [2024-11-10 18:05:50,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868339366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:05:50,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:05:50,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:05:50,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735972183] [2024-11-10 18:05:50,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:05:50,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:05:50,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:05:50,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:05:50,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:05:50,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-11-10 18:05:50,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:50,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:05:50,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-11-10 18:05:50,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:05:50,419 INFO L124 PetriNetUnfolderBase]: 268/667 cut-off events. [2024-11-10 18:05:50,420 INFO L125 PetriNetUnfolderBase]: For 294/317 co-relation queries the response was YES. [2024-11-10 18:05:50,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1524 conditions, 667 events. 268/667 cut-off events. For 294/317 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3369 event pairs, 104 based on Foata normal form. 0/662 useless extension candidates. Maximal degree in co-relation 1505. Up to 280 conditions per place. [2024-11-10 18:05:50,426 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 44 selfloop transitions, 5 changer transitions 0/63 dead transitions. [2024-11-10 18:05:50,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 63 transitions, 344 flow [2024-11-10 18:05:50,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:05:50,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:05:50,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-11-10 18:05:50,428 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5441176470588235 [2024-11-10 18:05:50,428 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 218 flow. Second operand 4 states and 111 transitions. [2024-11-10 18:05:50,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 63 transitions, 344 flow [2024-11-10 18:05:50,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 63 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:05:50,431 INFO L231 Difference]: Finished difference. Result has 72 places, 53 transitions, 220 flow [2024-11-10 18:05:50,432 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=72, PETRI_TRANSITIONS=53} [2024-11-10 18:05:50,432 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 24 predicate places. [2024-11-10 18:05:50,432 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 53 transitions, 220 flow [2024-11-10 18:05:50,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:50,433 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:05:50,433 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:05:50,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 18:05:50,433 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-10 18:05:50,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:05:50,434 INFO L85 PathProgramCache]: Analyzing trace with hash -408044172, now seen corresponding path program 1 times [2024-11-10 18:05:50,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:05:50,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894137933] [2024-11-10 18:05:50,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:50,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:05:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:50,853 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-10 18:05:50,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:05:50,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894137933] [2024-11-10 18:05:50,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894137933] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:05:50,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255169650] [2024-11-10 18:05:50,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:50,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:05:50,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:05:50,857 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:05:50,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 18:05:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:50,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-10 18:05:50,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:05:51,253 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-10 18:05:51,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:05:51,508 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-10 18:05:51,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255169650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:05:51,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:05:51,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-10 18:05:51,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321099429] [2024-11-10 18:05:51,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:05:51,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 18:05:51,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:05:51,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 18:05:51,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-10 18:05:51,664 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-11-10 18:05:51,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 53 transitions, 220 flow. Second operand has 14 states, 14 states have (on average 21.0) internal successors, (294), 14 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:51,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:05:51,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-11-10 18:05:51,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:05:52,276 INFO L124 PetriNetUnfolderBase]: 548/1301 cut-off events. [2024-11-10 18:05:52,277 INFO L125 PetriNetUnfolderBase]: For 787/819 co-relation queries the response was YES. [2024-11-10 18:05:52,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3044 conditions, 1301 events. 548/1301 cut-off events. For 787/819 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6623 event pairs, 143 based on Foata normal form. 140/1437 useless extension candidates. Maximal degree in co-relation 3025. Up to 350 conditions per place. [2024-11-10 18:05:52,290 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 141 selfloop transitions, 12 changer transitions 0/164 dead transitions. [2024-11-10 18:05:52,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 164 transitions, 878 flow [2024-11-10 18:05:52,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 18:05:52,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 18:05:52,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 349 transitions. [2024-11-10 18:05:52,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5702614379084967 [2024-11-10 18:05:52,293 INFO L175 Difference]: Start difference. First operand has 72 places, 53 transitions, 220 flow. Second operand 12 states and 349 transitions. [2024-11-10 18:05:52,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 164 transitions, 878 flow [2024-11-10 18:05:52,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 164 transitions, 856 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:05:52,300 INFO L231 Difference]: Finished difference. Result has 86 places, 59 transitions, 289 flow [2024-11-10 18:05:52,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=289, PETRI_PLACES=86, PETRI_TRANSITIONS=59} [2024-11-10 18:05:52,302 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 38 predicate places. [2024-11-10 18:05:52,302 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 59 transitions, 289 flow [2024-11-10 18:05:52,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.0) internal successors, (294), 14 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:52,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:05:52,303 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:05:52,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 18:05:52,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:05:52,504 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-10 18:05:52,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:05:52,505 INFO L85 PathProgramCache]: Analyzing trace with hash 320501813, now seen corresponding path program 1 times [2024-11-10 18:05:52,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:05:52,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082868952] [2024-11-10 18:05:52,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:52,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:05:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:52,794 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-10 18:05:52,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:05:52,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082868952] [2024-11-10 18:05:52,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082868952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:05:52,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741580171] [2024-11-10 18:05:52,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:52,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:05:52,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:05:52,798 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:05:52,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 18:05:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:52,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-10 18:05:52,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:05:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-10 18:05:53,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:05:53,411 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-10 18:05:53,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741580171] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:05:53,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:05:53,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-10 18:05:53,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125059991] [2024-11-10 18:05:53,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:05:53,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 18:05:53,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:05:53,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 18:05:53,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-10 18:05:53,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-11-10 18:05:53,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 59 transitions, 289 flow. Second operand has 14 states, 14 states have (on average 21.0) internal successors, (294), 14 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:53,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:05:53,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-11-10 18:05:53,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:05:54,629 INFO L124 PetriNetUnfolderBase]: 1260/2908 cut-off events. [2024-11-10 18:05:54,629 INFO L125 PetriNetUnfolderBase]: For 2766/2793 co-relation queries the response was YES. [2024-11-10 18:05:54,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7282 conditions, 2908 events. 1260/2908 cut-off events. For 2766/2793 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 16995 event pairs, 176 based on Foata normal form. 259/3126 useless extension candidates. Maximal degree in co-relation 7256. Up to 532 conditions per place. [2024-11-10 18:05:54,663 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 256 selfloop transitions, 12 changer transitions 0/278 dead transitions. [2024-11-10 18:05:54,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 278 transitions, 1867 flow [2024-11-10 18:05:54,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 18:05:54,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 18:05:54,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 394 transitions. [2024-11-10 18:05:54,665 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6437908496732027 [2024-11-10 18:05:54,665 INFO L175 Difference]: Start difference. First operand has 86 places, 59 transitions, 289 flow. Second operand 12 states and 394 transitions. [2024-11-10 18:05:54,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 278 transitions, 1867 flow [2024-11-10 18:05:54,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 278 transitions, 1686 flow, removed 70 selfloop flow, removed 3 redundant places. [2024-11-10 18:05:54,677 INFO L231 Difference]: Finished difference. Result has 100 places, 65 transitions, 349 flow [2024-11-10 18:05:54,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=349, PETRI_PLACES=100, PETRI_TRANSITIONS=65} [2024-11-10 18:05:54,679 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 52 predicate places. [2024-11-10 18:05:54,680 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 65 transitions, 349 flow [2024-11-10 18:05:54,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.0) internal successors, (294), 14 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:54,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:05:54,681 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-10 18:05:54,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 18:05:54,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:05:54,882 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-10 18:05:54,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:05:54,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1767971097, now seen corresponding path program 2 times [2024-11-10 18:05:54,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:05:54,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623876687] [2024-11-10 18:05:54,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:54,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:05:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:55,375 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-10 18:05:55,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:05:55,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623876687] [2024-11-10 18:05:55,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623876687] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:05:55,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835422625] [2024-11-10 18:05:55,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:05:55,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:05:55,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:05:55,382 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:05:55,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 18:05:55,520 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:05:55,520 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:05:55,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-10 18:05:55,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:05:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 56 proven. 12 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-10 18:05:56,104 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:05:56,814 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 48 proven. 20 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-10 18:05:56,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835422625] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:05:56,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:05:56,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-10 18:05:56,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812280346] [2024-11-10 18:05:56,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:05:56,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 18:05:56,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:05:56,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 18:05:56,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2024-11-10 18:05:57,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-11-10 18:05:57,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 65 transitions, 349 flow. Second operand has 23 states, 23 states have (on average 22.17391304347826) internal successors, (510), 23 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:57,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:05:57,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-11-10 18:05:57,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:05:58,613 INFO L124 PetriNetUnfolderBase]: 1410/3295 cut-off events. [2024-11-10 18:05:58,613 INFO L125 PetriNetUnfolderBase]: For 5299/5339 co-relation queries the response was YES. [2024-11-10 18:05:58,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8955 conditions, 3295 events. 1410/3295 cut-off events. For 5299/5339 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 19387 event pairs, 1 based on Foata normal form. 96/3391 useless extension candidates. Maximal degree in co-relation 8922. Up to 480 conditions per place. [2024-11-10 18:05:58,650 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 264 selfloop transitions, 15 changer transitions 0/289 dead transitions. [2024-11-10 18:05:58,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 289 transitions, 2155 flow [2024-11-10 18:05:58,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 18:05:58,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 18:05:58,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 425 transitions. [2024-11-10 18:05:58,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-10 18:05:58,653 INFO L175 Difference]: Start difference. First operand has 100 places, 65 transitions, 349 flow. Second operand 15 states and 425 transitions. [2024-11-10 18:05:58,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 289 transitions, 2155 flow [2024-11-10 18:05:58,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 289 transitions, 1912 flow, removed 91 selfloop flow, removed 7 redundant places. [2024-11-10 18:05:58,673 INFO L231 Difference]: Finished difference. Result has 107 places, 66 transitions, 357 flow [2024-11-10 18:05:58,674 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=357, PETRI_PLACES=107, PETRI_TRANSITIONS=66} [2024-11-10 18:05:58,674 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 59 predicate places. [2024-11-10 18:05:58,675 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 66 transitions, 357 flow [2024-11-10 18:05:58,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 22.17391304347826) internal successors, (510), 23 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:58,678 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:05:58,678 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-10 18:05:58,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 18:05:58,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-10 18:05:58,883 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-10 18:05:58,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:05:58,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1270041981, now seen corresponding path program 2 times [2024-11-10 18:05:58,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:05:58,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368062274] [2024-11-10 18:05:58,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:58,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:05:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-10 18:05:59,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:05:59,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368062274] [2024-11-10 18:05:59,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368062274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:05:59,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890940957] [2024-11-10 18:05:59,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:05:59,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:05:59,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:05:59,339 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:05:59,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 18:05:59,497 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:05:59,498 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:05:59,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 18:05:59,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:06:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-10 18:06:00,113 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:06:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-10 18:06:00,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890940957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:06:00,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:06:00,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-10 18:06:00,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145923092] [2024-11-10 18:06:00,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:06:00,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 18:06:00,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:06:00,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 18:06:00,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2024-11-10 18:06:00,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-11-10 18:06:00,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 66 transitions, 357 flow. Second operand has 23 states, 23 states have (on average 22.17391304347826) internal successors, (510), 23 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:06:00,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:06:00,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-11-10 18:06:00,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:06:03,758 INFO L124 PetriNetUnfolderBase]: 3012/7009 cut-off events. [2024-11-10 18:06:03,758 INFO L125 PetriNetUnfolderBase]: For 14187/14250 co-relation queries the response was YES. [2024-11-10 18:06:03,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18936 conditions, 7009 events. 3012/7009 cut-off events. For 14187/14250 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 45182 event pairs, 252 based on Foata normal form. 516/7523 useless extension candidates. Maximal degree in co-relation 18906. Up to 646 conditions per place. [2024-11-10 18:06:03,837 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 588 selfloop transitions, 24 changer transitions 0/621 dead transitions. [2024-11-10 18:06:03,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 621 transitions, 4374 flow [2024-11-10 18:06:03,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 18:06:03,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 18:06:03,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 804 transitions. [2024-11-10 18:06:03,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2024-11-10 18:06:03,843 INFO L175 Difference]: Start difference. First operand has 107 places, 66 transitions, 357 flow. Second operand 24 states and 804 transitions. [2024-11-10 18:06:03,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 621 transitions, 4374 flow [2024-11-10 18:06:03,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 621 transitions, 3844 flow, removed 66 selfloop flow, removed 10 redundant places. [2024-11-10 18:06:03,872 INFO L231 Difference]: Finished difference. Result has 133 places, 79 transitions, 507 flow [2024-11-10 18:06:03,872 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=507, PETRI_PLACES=133, PETRI_TRANSITIONS=79} [2024-11-10 18:06:03,873 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 85 predicate places. [2024-11-10 18:06:03,873 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 79 transitions, 507 flow [2024-11-10 18:06:03,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 22.17391304347826) internal successors, (510), 23 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:06:03,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:06:03,874 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:06:03,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 18:06:04,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:06:04,075 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-10 18:06:04,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:06:04,076 INFO L85 PathProgramCache]: Analyzing trace with hash -793723353, now seen corresponding path program 1 times [2024-11-10 18:06:04,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:06:04,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559158836] [2024-11-10 18:06:04,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:06:04,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:06:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:06:04,185 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-10 18:06:04,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:06:04,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559158836] [2024-11-10 18:06:04,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559158836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:06:04,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:06:04,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:06:04,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920211247] [2024-11-10 18:06:04,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:06:04,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:06:04,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:06:04,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:06:04,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:06:04,199 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-11-10 18:06:04,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 79 transitions, 507 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:06:04,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:06:04,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-11-10 18:06:04,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:06:05,540 INFO L124 PetriNetUnfolderBase]: 2926/6906 cut-off events. [2024-11-10 18:06:05,540 INFO L125 PetriNetUnfolderBase]: For 15133/15169 co-relation queries the response was YES. [2024-11-10 18:06:05,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20315 conditions, 6906 events. 2926/6906 cut-off events. For 15133/15169 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 44960 event pairs, 2814 based on Foata normal form. 68/6970 useless extension candidates. Maximal degree in co-relation 20272. Up to 5862 conditions per place. [2024-11-10 18:06:05,595 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 66 selfloop transitions, 1 changer transitions 1/78 dead transitions. [2024-11-10 18:06:05,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 78 transitions, 641 flow [2024-11-10 18:06:05,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:06:05,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:06:05,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-11-10 18:06:05,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6013071895424836 [2024-11-10 18:06:05,597 INFO L175 Difference]: Start difference. First operand has 133 places, 79 transitions, 507 flow. Second operand 3 states and 92 transitions. [2024-11-10 18:06:05,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 78 transitions, 641 flow [2024-11-10 18:06:05,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 78 transitions, 598 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-11-10 18:06:05,663 INFO L231 Difference]: Finished difference. Result has 125 places, 77 transitions, 462 flow [2024-11-10 18:06:05,664 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=462, PETRI_PLACES=125, PETRI_TRANSITIONS=77} [2024-11-10 18:06:05,665 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 77 predicate places. [2024-11-10 18:06:05,665 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 77 transitions, 462 flow [2024-11-10 18:06:05,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:06:05,666 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:06:05,666 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2024-11-10 18:06:05,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 18:06:05,666 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-10 18:06:05,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:06:05,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1637814259, now seen corresponding path program 3 times [2024-11-10 18:06:05,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:06:05,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32340226] [2024-11-10 18:06:05,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:06:05,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:06:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:06:06,037 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 336 proven. 74 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-10 18:06:06,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:06:06,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32340226] [2024-11-10 18:06:06,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32340226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:06:06,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893427809] [2024-11-10 18:06:06,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 18:06:06,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:06:06,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:06:06,044 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:06:06,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 18:06:06,183 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 18:06:06,184 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:06:06,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-10 18:06:06,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:06:06,948 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 74 proven. 30 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2024-11-10 18:06:06,949 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:06:07,540 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2024-11-10 18:06:07,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893427809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:06:07,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:06:07,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 23 [2024-11-10 18:06:07,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220639683] [2024-11-10 18:06:07,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:06:07,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 18:06:07,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:06:07,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 18:06:07,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2024-11-10 18:06:07,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-11-10 18:06:07,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 77 transitions, 462 flow. Second operand has 23 states, 23 states have (on average 22.695652173913043) internal successors, (522), 23 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:06:07,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:06:07,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-11-10 18:06:07,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:06:10,382 INFO L124 PetriNetUnfolderBase]: 2668/6290 cut-off events. [2024-11-10 18:06:10,382 INFO L125 PetriNetUnfolderBase]: For 9810/9871 co-relation queries the response was YES. [2024-11-10 18:06:10,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17250 conditions, 6290 events. 2668/6290 cut-off events. For 9810/9871 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 39911 event pairs, 0 based on Foata normal form. 43/6333 useless extension candidates. Maximal degree in co-relation 17207. Up to 474 conditions per place. [2024-11-10 18:06:10,411 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 0 selfloop transitions, 0 changer transitions 636/636 dead transitions. [2024-11-10 18:06:10,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 636 transitions, 3997 flow [2024-11-10 18:06:10,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-10 18:06:10,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-10 18:06:10,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 816 transitions. [2024-11-10 18:06:10,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-11-10 18:06:10,414 INFO L175 Difference]: Start difference. First operand has 125 places, 77 transitions, 462 flow. Second operand 25 states and 816 transitions. [2024-11-10 18:06:10,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 636 transitions, 3997 flow [2024-11-10 18:06:10,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 636 transitions, 3958 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-11-10 18:06:10,486 INFO L231 Difference]: Finished difference. Result has 133 places, 0 transitions, 0 flow [2024-11-10 18:06:10,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=0, PETRI_PLACES=133, PETRI_TRANSITIONS=0} [2024-11-10 18:06:10,488 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 85 predicate places. [2024-11-10 18:06:10,488 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 0 transitions, 0 flow [2024-11-10 18:06:10,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 22.695652173913043) internal successors, (522), 23 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:06:10,491 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2024-11-10 18:06:10,491 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining) [2024-11-10 18:06:10,492 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2024-11-10 18:06:10,492 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2024-11-10 18:06:10,492 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2024-11-10 18:06:10,492 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2024-11-10 18:06:10,492 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2024-11-10 18:06:10,492 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2024-11-10 18:06:10,492 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (9 of 18 remaining) [2024-11-10 18:06:10,492 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2024-11-10 18:06:10,493 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2024-11-10 18:06:10,493 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2024-11-10 18:06:10,493 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2024-11-10 18:06:10,494 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2024-11-10 18:06:10,494 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2024-11-10 18:06:10,494 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2024-11-10 18:06:10,494 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2024-11-10 18:06:10,494 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2024-11-10 18:06:10,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 18:06:10,694 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 [2024-11-10 18:06:10,695 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-10 18:06:10,701 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 18:06:10,702 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 18:06:10,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 06:06:10 BasicIcfg [2024-11-10 18:06:10,709 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 18:06:10,709 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 18:06:10,710 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 18:06:10,710 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 18:06:10,710 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:05:45" (3/4) ... [2024-11-10 18:06:10,713 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 18:06:10,716 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-10 18:06:10,726 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 51 nodes and edges [2024-11-10 18:06:10,726 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2024-11-10 18:06:10,727 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-10 18:06:10,727 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-10 18:06:10,727 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-10 18:06:10,727 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-10 18:06:10,831 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 18:06:10,831 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 18:06:10,831 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 18:06:10,832 INFO L158 Benchmark]: Toolchain (without parser) took 26920.51ms. Allocated memory was 163.6MB in the beginning and 973.1MB in the end (delta: 809.5MB). Free memory was 131.6MB in the beginning and 640.0MB in the end (delta: -508.4MB). Peak memory consumption was 301.7MB. Max. memory is 16.1GB. [2024-11-10 18:06:10,832 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 111.1MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 18:06:10,833 INFO L158 Benchmark]: CACSL2BoogieTranslator took 722.99ms. Allocated memory is still 163.6MB. Free memory was 131.6MB in the beginning and 98.6MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-10 18:06:10,833 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.68ms. Allocated memory is still 163.6MB. Free memory was 98.6MB in the beginning and 95.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 18:06:10,834 INFO L158 Benchmark]: Boogie Preprocessor took 57.47ms. Allocated memory is still 163.6MB. Free memory was 95.5MB in the beginning and 93.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 18:06:10,834 INFO L158 Benchmark]: IcfgBuilder took 1148.78ms. Allocated memory is still 163.6MB. Free memory was 93.4MB in the beginning and 56.7MB in the end (delta: 36.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-11-10 18:06:10,834 INFO L158 Benchmark]: TraceAbstraction took 24792.86ms. Allocated memory was 163.6MB in the beginning and 973.1MB in the end (delta: 809.5MB). Free memory was 56.7MB in the beginning and 644.2MB in the end (delta: -587.5MB). Peak memory consumption was 408.7MB. Max. memory is 16.1GB. [2024-11-10 18:06:10,834 INFO L158 Benchmark]: Witness Printer took 122.04ms. Allocated memory is still 973.1MB. Free memory was 644.2MB in the beginning and 640.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 18:06:10,836 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 111.1MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 722.99ms. Allocated memory is still 163.6MB. Free memory was 131.6MB in the beginning and 98.6MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.68ms. Allocated memory is still 163.6MB. Free memory was 98.6MB in the beginning and 95.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.47ms. Allocated memory is still 163.6MB. Free memory was 95.5MB in the beginning and 93.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 1148.78ms. Allocated memory is still 163.6MB. Free memory was 93.4MB in the beginning and 56.7MB in the end (delta: 36.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 24792.86ms. Allocated memory was 163.6MB in the beginning and 973.1MB in the end (delta: 809.5MB). Free memory was 56.7MB in the beginning and 644.2MB in the end (delta: -587.5MB). Peak memory consumption was 408.7MB. Max. memory is 16.1GB. * Witness Printer took 122.04ms. Allocated memory is still 973.1MB. Free memory was 644.2MB in the beginning and 640.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 931]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 62 locations, 18 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: 24.6s, OverallIterations: 14, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 13.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2879 SdHoareTripleChecker+Valid, 5.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2729 mSDsluCounter, 770 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 721 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9355 IncrementalHoareTripleChecker+Invalid, 9425 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 49 mSDtfsCounter, 9355 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 811 GetRequests, 624 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=507occurred in iteration=12, InterpolantAutomatonStates: 132, 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: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 901 NumberOfCodeBlocks, 811 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1220 ConstructedInterpolants, 0 QuantifiedInterpolants, 13391 SizeOfPredicates, 28 NumberOfNonLiveVariables, 2079 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 28 InterpolantComputations, 7 PerfectInterpolantSequences, 3326/3934 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-10 18:06:10,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE