./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 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/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-3289d67-m [2024-11-17 03:25:24,432 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:25:24,489 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:25:24,494 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:25:24,495 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:25:24,516 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:25:24,518 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:25:24,518 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:25:24,518 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:25:24,520 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:25:24,520 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:25:24,520 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:25:24,521 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:25:24,522 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:25:24,522 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:25:24,523 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:25:24,523 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:25:24,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:25:24,523 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:25:24,523 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:25:24,524 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:25:24,526 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:25:24,526 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:25:24,526 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:25:24,526 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:25:24,527 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:25:24,527 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:25:24,527 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:25:24,527 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:25:24,527 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:25:24,528 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:25:24,528 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:25:24,528 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:25:24,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:25:24,528 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:25:24,528 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:25:24,529 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:25:24,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:25:24,529 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:25:24,530 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:25:24,530 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:25:24,530 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:25:24,530 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a [2024-11-17 03:25:24,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:25:24,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:25:24,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:25:24,773 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:25:24,773 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:25:24,774 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2024-11-17 03:25:25,966 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:25:26,189 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:25:26,190 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2024-11-17 03:25:26,205 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/439dba8c3/2a441756870943c68110a34ba99ee6f3/FLAG533ea6085 [2024-11-17 03:25:26,220 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/439dba8c3/2a441756870943c68110a34ba99ee6f3 [2024-11-17 03:25:26,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:25:26,224 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:25:26,226 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:25:26,226 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:25:26,232 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:25:26,232 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:25:26" (1/1) ... [2024-11-17 03:25:26,233 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59991c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:26, skipping insertion in model container [2024-11-17 03:25:26,233 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:25:26" (1/1) ... [2024-11-17 03:25:26,266 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:25:26,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:25:26,635 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:25:26,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:25:26,711 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:25:26,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:26 WrapperNode [2024-11-17 03:25:26,711 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:25:26,712 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:25:26,712 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:25:26,713 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:25:26,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:26" (1/1) ... [2024-11-17 03:25:26,731 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:26" (1/1) ... [2024-11-17 03:25:26,750 INFO L138 Inliner]: procedures = 263, calls = 74, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 140 [2024-11-17 03:25:26,750 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:25:26,750 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:25:26,751 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:25:26,751 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:25:26,763 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:26" (1/1) ... [2024-11-17 03:25:26,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:26" (1/1) ... [2024-11-17 03:25:26,766 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:26" (1/1) ... [2024-11-17 03:25:26,778 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]. [2024-11-17 03:25:26,778 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:26" (1/1) ... [2024-11-17 03:25:26,778 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:26" (1/1) ... [2024-11-17 03:25:26,784 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:26" (1/1) ... [2024-11-17 03:25:26,784 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:26" (1/1) ... [2024-11-17 03:25:26,785 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:26" (1/1) ... [2024-11-17 03:25:26,786 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:26" (1/1) ... [2024-11-17 03:25:26,788 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:25:26,792 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:25:26,792 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:25:26,792 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:25:26,793 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:26" (1/1) ... [2024-11-17 03:25:26,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:25:26,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:25:26,825 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) [2024-11-17 03:25:26,845 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 [2024-11-17 03:25:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 03:25:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 03:25:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 03:25:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 03:25:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:25:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-17 03:25:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-17 03:25:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:25:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:25:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:25:26,886 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:25:26,997 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:25:26,999 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:25:27,270 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:25:27,270 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:25:27,495 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:25:27,496 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:25:27,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:25:27 BoogieIcfgContainer [2024-11-17 03:25:27,496 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:25:27,498 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:25:27,498 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:25:27,500 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:25:27,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:25:26" (1/3) ... [2024-11-17 03:25:27,501 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d073170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:25:27, skipping insertion in model container [2024-11-17 03:25:27,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:26" (2/3) ... [2024-11-17 03:25:27,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d073170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:25:27, skipping insertion in model container [2024-11-17 03:25:27,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:25:27" (3/3) ... [2024-11-17 03:25:27,503 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_05-funloop_hard2.i [2024-11-17 03:25:27,515 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:25:27,515 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2024-11-17 03:25:27,515 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:25:27,550 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:25:27,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 106 flow [2024-11-17 03:25:27,619 INFO L124 PetriNetUnfolderBase]: 6/50 cut-off events. [2024-11-17 03:25:27,620 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:25:27,623 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. [2024-11-17 03:25:27,624 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 51 transitions, 106 flow [2024-11-17 03:25:27,626 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 50 transitions, 103 flow [2024-11-17 03:25:27,635 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:25:27,641 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;@3c5453d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:25:27,641 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-17 03:25:27,651 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:25:27,651 INFO L124 PetriNetUnfolderBase]: 4/23 cut-off events. [2024-11-17 03:25:27,651 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:25:27,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:25:27,652 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:25:27,653 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)] === [2024-11-17 03:25:27,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:25:27,656 INFO L85 PathProgramCache]: Analyzing trace with hash -427074776, now seen corresponding path program 1 times [2024-11-17 03:25:27,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:25:27,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567261656] [2024-11-17 03:25:27,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:25:27,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:25:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:25:27,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:25:27,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:25:27,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567261656] [2024-11-17 03:25:27,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567261656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:25:27,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:25:27,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:25:27,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680329890] [2024-11-17 03:25:27,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:25:27,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:25:27,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:25:27,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:25:27,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:25:27,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 51 [2024-11-17 03:25:27,867 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) [2024-11-17 03:25:27,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:25:27,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 51 [2024-11-17 03:25:27,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:25:27,954 INFO L124 PetriNetUnfolderBase]: 106/307 cut-off events. [2024-11-17 03:25:27,954 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:25:27,955 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. [2024-11-17 03:25:27,959 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 25 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2024-11-17 03:25:27,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 147 flow [2024-11-17 03:25:27,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:25:27,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:25:27,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 74 transitions. [2024-11-17 03:25:27,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7254901960784313 [2024-11-17 03:25:27,971 INFO L175 Difference]: Start difference. First operand has 48 places, 50 transitions, 103 flow. Second operand 2 states and 74 transitions. [2024-11-17 03:25:27,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 147 flow [2024-11-17 03:25:27,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:25:27,975 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 96 flow [2024-11-17 03:25:27,977 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} [2024-11-17 03:25:27,979 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2024-11-17 03:25:27,979 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 96 flow [2024-11-17 03:25:27,979 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) [2024-11-17 03:25:27,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:25:27,979 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:25:27,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:25:27,980 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)] === [2024-11-17 03:25:27,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:25:27,980 INFO L85 PathProgramCache]: Analyzing trace with hash -352057538, now seen corresponding path program 1 times [2024-11-17 03:25:27,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:25:27,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843535491] [2024-11-17 03:25:27,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:25:27,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:25:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:25:28,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:25:28,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:25:28,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843535491] [2024-11-17 03:25:28,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843535491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:25:28,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:25:28,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:25:28,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178549639] [2024-11-17 03:25:28,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:25:28,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:25:28,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:25:28,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:25:28,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:25:28,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-11-17 03:25:28,072 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) [2024-11-17 03:25:28,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:25:28,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-11-17 03:25:28,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:25:28,174 INFO L124 PetriNetUnfolderBase]: 106/309 cut-off events. [2024-11-17 03:25:28,175 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:25:28,176 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. [2024-11-17 03:25:28,178 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 25 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2024-11-17 03:25:28,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 152 flow [2024-11-17 03:25:28,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:25:28,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:25:28,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-11-17 03:25:28,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6143790849673203 [2024-11-17 03:25:28,180 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 96 flow. Second operand 3 states and 94 transitions. [2024-11-17 03:25:28,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 152 flow [2024-11-17 03:25:28,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 152 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:25:28,183 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 108 flow [2024-11-17 03:25:28,184 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} [2024-11-17 03:25:28,184 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2024-11-17 03:25:28,184 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 108 flow [2024-11-17 03:25:28,184 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) [2024-11-17 03:25:28,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:25:28,185 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:25:28,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:25:28,185 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)] === [2024-11-17 03:25:28,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:25:28,185 INFO L85 PathProgramCache]: Analyzing trace with hash 356117505, now seen corresponding path program 1 times [2024-11-17 03:25:28,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:25:28,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911176682] [2024-11-17 03:25:28,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:25:28,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:25:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:25:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:25:28,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:25:28,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911176682] [2024-11-17 03:25:28,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911176682] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:25:28,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816757880] [2024-11-17 03:25:28,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:25:28,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:25:28,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:25:28,263 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) [2024-11-17 03:25:28,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 03:25:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:25:28,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 03:25:28,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:25:28,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:25:28,367 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:25:28,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:25:28,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816757880] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:25:28,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:25:28,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-17 03:25:28,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256846510] [2024-11-17 03:25:28,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:25:28,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 03:25:28,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:25:28,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 03:25:28,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-17 03:25:28,394 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-11-17 03:25:28,394 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) [2024-11-17 03:25:28,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:25:28,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-11-17 03:25:28,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:25:28,536 INFO L124 PetriNetUnfolderBase]: 106/315 cut-off events. [2024-11-17 03:25:28,536 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-17 03:25:28,537 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. [2024-11-17 03:25:28,539 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 25 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2024-11-17 03:25:28,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 51 transitions, 180 flow [2024-11-17 03:25:28,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:25:28,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:25:28,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-11-17 03:25:28,541 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5392156862745098 [2024-11-17 03:25:28,541 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 108 flow. Second operand 6 states and 165 transitions. [2024-11-17 03:25:28,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 51 transitions, 180 flow [2024-11-17 03:25:28,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:25:28,543 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 142 flow [2024-11-17 03:25:28,543 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} [2024-11-17 03:25:28,545 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 10 predicate places. [2024-11-17 03:25:28,545 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 142 flow [2024-11-17 03:25:28,546 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) [2024-11-17 03:25:28,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:25:28,546 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:25:28,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 03:25:28,746 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 [2024-11-17 03:25:28,747 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)] === [2024-11-17 03:25:28,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:25:28,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1870888394, now seen corresponding path program 2 times [2024-11-17 03:25:28,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:25:28,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399590957] [2024-11-17 03:25:28,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:25:28,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:25:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:25:28,866 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 03:25:28,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:25:28,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399590957] [2024-11-17 03:25:28,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399590957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:25:28,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:25:28,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:25:28,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848371348] [2024-11-17 03:25:28,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:25:28,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:25:28,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:25:28,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:25:28,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:25:28,897 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-11-17 03:25:28,898 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) [2024-11-17 03:25:28,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:25:28,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-11-17 03:25:28,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:25:28,981 INFO L124 PetriNetUnfolderBase]: 106/296 cut-off events. [2024-11-17 03:25:28,981 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-17 03:25:28,983 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. [2024-11-17 03:25:28,984 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 39 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2024-11-17 03:25:28,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 244 flow [2024-11-17 03:25:28,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:25:28,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:25:28,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-17 03:25:28,986 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2024-11-17 03:25:28,988 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 142 flow. Second operand 4 states and 120 transitions. [2024-11-17 03:25:28,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 244 flow [2024-11-17 03:25:28,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 236 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-17 03:25:28,989 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 132 flow [2024-11-17 03:25:28,989 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} [2024-11-17 03:25:28,990 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 8 predicate places. [2024-11-17 03:25:28,991 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 132 flow [2024-11-17 03:25:28,991 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) [2024-11-17 03:25:28,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:25:28,991 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:25:28,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:25:28,992 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)] === [2024-11-17 03:25:28,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:25:28,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1870888395, now seen corresponding path program 1 times [2024-11-17 03:25:28,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:25:28,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697349076] [2024-11-17 03:25:28,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:25:28,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:25:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:25:29,088 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:25:29,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:25:29,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697349076] [2024-11-17 03:25:29,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697349076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:25:29,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396444720] [2024-11-17 03:25:29,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:25:29,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:25:29,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:25:29,091 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) [2024-11-17 03:25:29,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 03:25:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:25:29,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 03:25:29,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:25:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:25:29,192 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:25:29,251 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:25:29,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396444720] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:25:29,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:25:29,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-17 03:25:29,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783666889] [2024-11-17 03:25:29,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:25:29,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 03:25:29,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:25:29,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 03:25:29,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-17 03:25:29,253 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-11-17 03:25:29,254 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) [2024-11-17 03:25:29,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:25:29,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-11-17 03:25:29,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:25:29,331 INFO L124 PetriNetUnfolderBase]: 106/309 cut-off events. [2024-11-17 03:25:29,331 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2024-11-17 03:25:29,332 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. [2024-11-17 03:25:29,333 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 25 selfloop transitions, 11 changer transitions 0/53 dead transitions. [2024-11-17 03:25:29,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 53 transitions, 240 flow [2024-11-17 03:25:29,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 03:25:29,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-17 03:25:29,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 306 transitions. [2024-11-17 03:25:29,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-17 03:25:29,335 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 132 flow. Second operand 12 states and 306 transitions. [2024-11-17 03:25:29,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 53 transitions, 240 flow [2024-11-17 03:25:29,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 53 transitions, 234 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:25:29,337 INFO L231 Difference]: Finished difference. Result has 70 places, 53 transitions, 210 flow [2024-11-17 03:25:29,337 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} [2024-11-17 03:25:29,337 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 22 predicate places. [2024-11-17 03:25:29,338 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 53 transitions, 210 flow [2024-11-17 03:25:29,338 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) [2024-11-17 03:25:29,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:25:29,338 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:25:29,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 03:25:29,542 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 [2024-11-17 03:25:29,546 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)] === [2024-11-17 03:25:29,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:25:29,547 INFO L85 PathProgramCache]: Analyzing trace with hash -809959139, now seen corresponding path program 2 times [2024-11-17 03:25:29,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:25:29,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926890220] [2024-11-17 03:25:29,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:25:29,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:25:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:25:29,706 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-17 03:25:29,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:25:29,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926890220] [2024-11-17 03:25:29,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926890220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:25:29,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:25:29,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:25:29,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004164146] [2024-11-17 03:25:29,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:25:29,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:25:29,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:25:29,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:25:29,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:25:29,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-11-17 03:25:29,729 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) [2024-11-17 03:25:29,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:25:29,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-11-17 03:25:29,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:25:29,895 INFO L124 PetriNetUnfolderBase]: 223/539 cut-off events. [2024-11-17 03:25:29,895 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2024-11-17 03:25:29,896 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. [2024-11-17 03:25:29,898 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 66 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2024-11-17 03:25:29,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 83 transitions, 410 flow [2024-11-17 03:25:29,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:25:29,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:25:29,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-11-17 03:25:29,899 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6235294117647059 [2024-11-17 03:25:29,900 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 210 flow. Second operand 5 states and 159 transitions. [2024-11-17 03:25:29,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 83 transitions, 410 flow [2024-11-17 03:25:29,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 83 transitions, 374 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-11-17 03:25:29,903 INFO L231 Difference]: Finished difference. Result has 69 places, 53 transitions, 196 flow [2024-11-17 03:25:29,903 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} [2024-11-17 03:25:29,904 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 21 predicate places. [2024-11-17 03:25:29,904 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 53 transitions, 196 flow [2024-11-17 03:25:29,904 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) [2024-11-17 03:25:29,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:25:29,904 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:25:29,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 03:25:29,905 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)] === [2024-11-17 03:25:29,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:25:29,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1841322435, now seen corresponding path program 1 times [2024-11-17 03:25:29,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:25:29,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863867552] [2024-11-17 03:25:29,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:25:29,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:25:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:25:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-17 03:25:30,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:25:30,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863867552] [2024-11-17 03:25:30,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863867552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:25:30,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:25:30,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:25:30,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972804622] [2024-11-17 03:25:30,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:25:30,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:25:30,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:25:30,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:25:30,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:25:30,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-11-17 03:25:30,082 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) [2024-11-17 03:25:30,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:25:30,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-11-17 03:25:30,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:25:30,246 INFO L124 PetriNetUnfolderBase]: 310/796 cut-off events. [2024-11-17 03:25:30,247 INFO L125 PetriNetUnfolderBase]: For 264/279 co-relation queries the response was YES. [2024-11-17 03:25:30,248 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. [2024-11-17 03:25:30,249 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 62 selfloop transitions, 4 changer transitions 0/79 dead transitions. [2024-11-17 03:25:30,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 79 transitions, 408 flow [2024-11-17 03:25:30,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:25:30,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:25:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-11-17 03:25:30,251 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5607843137254902 [2024-11-17 03:25:30,251 INFO L175 Difference]: Start difference. First operand has 69 places, 53 transitions, 196 flow. Second operand 5 states and 143 transitions. [2024-11-17 03:25:30,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 79 transitions, 408 flow [2024-11-17 03:25:30,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 79 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:25:30,256 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 218 flow [2024-11-17 03:25:30,256 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} [2024-11-17 03:25:30,257 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 25 predicate places. [2024-11-17 03:25:30,257 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 218 flow [2024-11-17 03:25:30,258 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) [2024-11-17 03:25:30,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:25:30,258 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:25:30,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 03:25:30,258 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)] === [2024-11-17 03:25:30,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:25:30,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1841322436, now seen corresponding path program 1 times [2024-11-17 03:25:30,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:25:30,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908174974] [2024-11-17 03:25:30,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:25:30,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:25:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:25:30,347 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-17 03:25:30,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:25:30,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908174974] [2024-11-17 03:25:30,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908174974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:25:30,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:25:30,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:25:30,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508777851] [2024-11-17 03:25:30,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:25:30,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:25:30,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:25:30,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:25:30,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:25:30,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-11-17 03:25:30,376 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) [2024-11-17 03:25:30,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:25:30,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-11-17 03:25:30,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:25:30,470 INFO L124 PetriNetUnfolderBase]: 268/667 cut-off events. [2024-11-17 03:25:30,470 INFO L125 PetriNetUnfolderBase]: For 294/317 co-relation queries the response was YES. [2024-11-17 03:25:30,472 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. [2024-11-17 03:25:30,474 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 44 selfloop transitions, 5 changer transitions 0/63 dead transitions. [2024-11-17 03:25:30,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 63 transitions, 344 flow [2024-11-17 03:25:30,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:25:30,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:25:30,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-11-17 03:25:30,478 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5441176470588235 [2024-11-17 03:25:30,478 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 218 flow. Second operand 4 states and 111 transitions. [2024-11-17 03:25:30,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 63 transitions, 344 flow [2024-11-17 03:25:30,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 63 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:25:30,480 INFO L231 Difference]: Finished difference. Result has 72 places, 53 transitions, 220 flow [2024-11-17 03:25:30,481 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} [2024-11-17 03:25:30,481 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 24 predicate places. [2024-11-17 03:25:30,481 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 53 transitions, 220 flow [2024-11-17 03:25:30,481 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) [2024-11-17 03:25:30,481 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:25:30,481 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:25:30,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 03:25:30,482 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)] === [2024-11-17 03:25:30,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:25:30,482 INFO L85 PathProgramCache]: Analyzing trace with hash -408044172, now seen corresponding path program 1 times [2024-11-17 03:25:30,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:25:30,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841518889] [2024-11-17 03:25:30,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:25:30,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:25:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:25:30,741 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-17 03:25:30,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:25:30,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841518889] [2024-11-17 03:25:30,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841518889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:25:30,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606206060] [2024-11-17 03:25:30,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:25:30,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:25:30,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:25:30,746 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) [2024-11-17 03:25:30,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 03:25:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:25:30,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-17 03:25:30,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:25:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-17 03:25:31,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:25:31,215 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-17 03:25:31,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606206060] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:25:31,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:25:31,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-17 03:25:31,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274958458] [2024-11-17 03:25:31,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:25:31,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 03:25:31,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:25:31,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 03:25:31,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-17 03:25:31,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-11-17 03:25:31,340 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) [2024-11-17 03:25:31,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:25:31,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-11-17 03:25:31,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:25:31,769 INFO L124 PetriNetUnfolderBase]: 548/1301 cut-off events. [2024-11-17 03:25:31,769 INFO L125 PetriNetUnfolderBase]: For 787/819 co-relation queries the response was YES. [2024-11-17 03:25:31,772 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. [2024-11-17 03:25:31,776 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 141 selfloop transitions, 12 changer transitions 0/164 dead transitions. [2024-11-17 03:25:31,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 164 transitions, 878 flow [2024-11-17 03:25:31,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 03:25:31,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-17 03:25:31,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 349 transitions. [2024-11-17 03:25:31,777 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5702614379084967 [2024-11-17 03:25:31,777 INFO L175 Difference]: Start difference. First operand has 72 places, 53 transitions, 220 flow. Second operand 12 states and 349 transitions. [2024-11-17 03:25:31,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 164 transitions, 878 flow [2024-11-17 03:25:31,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 164 transitions, 856 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:25:31,781 INFO L231 Difference]: Finished difference. Result has 86 places, 59 transitions, 289 flow [2024-11-17 03:25:31,782 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} [2024-11-17 03:25:31,782 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 38 predicate places. [2024-11-17 03:25:31,783 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 59 transitions, 289 flow [2024-11-17 03:25:31,783 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) [2024-11-17 03:25:31,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:25:31,783 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:25:31,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-17 03:25:31,987 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 [2024-11-17 03:25:31,988 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)] === [2024-11-17 03:25:31,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:25:31,988 INFO L85 PathProgramCache]: Analyzing trace with hash 320501813, now seen corresponding path program 1 times [2024-11-17 03:25:31,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:25:31,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100105107] [2024-11-17 03:25:31,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:25:31,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:25:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:25:32,190 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-17 03:25:32,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:25:32,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100105107] [2024-11-17 03:25:32,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100105107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:25:32,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929731772] [2024-11-17 03:25:32,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:25:32,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:25:32,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:25:32,193 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) [2024-11-17 03:25:32,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 03:25:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:25:32,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-17 03:25:32,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:25:32,462 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-17 03:25:32,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:25:32,600 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-17 03:25:32,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929731772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:25:32,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:25:32,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-17 03:25:32,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818016938] [2024-11-17 03:25:32,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:25:32,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 03:25:32,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:25:32,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 03:25:32,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-17 03:25:32,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-11-17 03:25:32,716 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) [2024-11-17 03:25:32,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:25:32,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-11-17 03:25:32,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:25:33,354 INFO L124 PetriNetUnfolderBase]: 1260/2908 cut-off events. [2024-11-17 03:25:33,354 INFO L125 PetriNetUnfolderBase]: For 2766/2793 co-relation queries the response was YES. [2024-11-17 03:25:33,360 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. [2024-11-17 03:25:33,368 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 256 selfloop transitions, 12 changer transitions 0/278 dead transitions. [2024-11-17 03:25:33,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 278 transitions, 1867 flow [2024-11-17 03:25:33,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 03:25:33,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-17 03:25:33,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 394 transitions. [2024-11-17 03:25:33,370 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6437908496732027 [2024-11-17 03:25:33,370 INFO L175 Difference]: Start difference. First operand has 86 places, 59 transitions, 289 flow. Second operand 12 states and 394 transitions. [2024-11-17 03:25:33,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 278 transitions, 1867 flow [2024-11-17 03:25:33,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 278 transitions, 1686 flow, removed 70 selfloop flow, removed 3 redundant places. [2024-11-17 03:25:33,377 INFO L231 Difference]: Finished difference. Result has 100 places, 65 transitions, 349 flow [2024-11-17 03:25:33,378 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} [2024-11-17 03:25:33,378 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 52 predicate places. [2024-11-17 03:25:33,379 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 65 transitions, 349 flow [2024-11-17 03:25:33,379 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) [2024-11-17 03:25:33,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:25:33,379 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-17 03:25:33,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-17 03:25:33,580 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 [2024-11-17 03:25:33,580 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)] === [2024-11-17 03:25:33,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:25:33,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1767971097, now seen corresponding path program 2 times [2024-11-17 03:25:33,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:25:33,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363983983] [2024-11-17 03:25:33,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:25:33,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:25:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:25:33,874 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-17 03:25:33,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:25:33,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363983983] [2024-11-17 03:25:33,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363983983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:25:33,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082949050] [2024-11-17 03:25:33,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:25:33,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:25:33,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:25:33,878 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) [2024-11-17 03:25:33,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 03:25:33,972 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:25:33,972 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:25:33,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-17 03:25:33,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:25:34,373 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 56 proven. 12 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-17 03:25:34,375 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:25:34,811 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 48 proven. 20 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-17 03:25:34,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082949050] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:25:34,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:25:34,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-17 03:25:34,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006012908] [2024-11-17 03:25:34,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:25:34,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-17 03:25:34,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:25:34,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-17 03:25:34,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2024-11-17 03:25:35,073 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-11-17 03:25:35,074 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) [2024-11-17 03:25:35,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:25:35,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-11-17 03:25:35,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:25:36,023 INFO L124 PetriNetUnfolderBase]: 1410/3295 cut-off events. [2024-11-17 03:25:36,024 INFO L125 PetriNetUnfolderBase]: For 5299/5339 co-relation queries the response was YES. [2024-11-17 03:25:36,035 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. [2024-11-17 03:25:36,045 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 264 selfloop transitions, 15 changer transitions 0/289 dead transitions. [2024-11-17 03:25:36,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 289 transitions, 2155 flow [2024-11-17 03:25:36,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 03:25:36,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-17 03:25:36,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 425 transitions. [2024-11-17 03:25:36,047 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-17 03:25:36,047 INFO L175 Difference]: Start difference. First operand has 100 places, 65 transitions, 349 flow. Second operand 15 states and 425 transitions. [2024-11-17 03:25:36,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 289 transitions, 2155 flow [2024-11-17 03:25:36,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 289 transitions, 1912 flow, removed 91 selfloop flow, removed 7 redundant places. [2024-11-17 03:25:36,060 INFO L231 Difference]: Finished difference. Result has 107 places, 66 transitions, 357 flow [2024-11-17 03:25:36,061 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} [2024-11-17 03:25:36,061 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 59 predicate places. [2024-11-17 03:25:36,061 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 66 transitions, 357 flow [2024-11-17 03:25:36,061 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) [2024-11-17 03:25:36,061 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:25:36,061 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-17 03:25:36,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 03:25:36,262 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 [2024-11-17 03:25:36,262 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)] === [2024-11-17 03:25:36,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:25:36,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1270041981, now seen corresponding path program 2 times [2024-11-17 03:25:36,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:25:36,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701041085] [2024-11-17 03:25:36,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:25:36,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:25:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:25:36,552 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-17 03:25:36,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:25:36,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701041085] [2024-11-17 03:25:36,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701041085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:25:36,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836201326] [2024-11-17 03:25:36,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:25:36,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:25:36,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:25:36,554 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) [2024-11-17 03:25:36,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 03:25:36,657 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:25:36,658 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:25:36,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-17 03:25:36,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:25:37,030 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-17 03:25:37,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:25:37,303 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-17 03:25:37,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836201326] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:25:37,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:25:37,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-17 03:25:37,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431719401] [2024-11-17 03:25:37,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:25:37,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-17 03:25:37,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:25:37,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-17 03:25:37,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2024-11-17 03:25:37,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-11-17 03:25:37,649 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) [2024-11-17 03:25:37,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:25:37,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-11-17 03:25:37,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:25:39,745 INFO L124 PetriNetUnfolderBase]: 3012/7009 cut-off events. [2024-11-17 03:25:39,745 INFO L125 PetriNetUnfolderBase]: For 14187/14250 co-relation queries the response was YES. [2024-11-17 03:25:39,764 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. [2024-11-17 03:25:39,785 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 588 selfloop transitions, 24 changer transitions 0/621 dead transitions. [2024-11-17 03:25:39,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 621 transitions, 4374 flow [2024-11-17 03:25:39,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-17 03:25:39,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-17 03:25:39,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 804 transitions. [2024-11-17 03:25:39,788 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2024-11-17 03:25:39,789 INFO L175 Difference]: Start difference. First operand has 107 places, 66 transitions, 357 flow. Second operand 24 states and 804 transitions. [2024-11-17 03:25:39,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 621 transitions, 4374 flow [2024-11-17 03:25:39,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 621 transitions, 3844 flow, removed 66 selfloop flow, removed 10 redundant places. [2024-11-17 03:25:39,810 INFO L231 Difference]: Finished difference. Result has 133 places, 79 transitions, 507 flow [2024-11-17 03:25:39,810 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} [2024-11-17 03:25:39,811 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 85 predicate places. [2024-11-17 03:25:39,811 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 79 transitions, 507 flow [2024-11-17 03:25:39,811 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) [2024-11-17 03:25:39,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:25:39,811 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] [2024-11-17 03:25:39,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-17 03:25:40,011 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 [2024-11-17 03:25:40,012 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)] === [2024-11-17 03:25:40,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:25:40,017 INFO L85 PathProgramCache]: Analyzing trace with hash -793723353, now seen corresponding path program 1 times [2024-11-17 03:25:40,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:25:40,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8987742] [2024-11-17 03:25:40,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:25:40,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:25:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:25:40,088 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-17 03:25:40,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:25:40,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8987742] [2024-11-17 03:25:40,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8987742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:25:40,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:25:40,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:25:40,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061151836] [2024-11-17 03:25:40,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:25:40,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:25:40,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:25:40,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:25:40,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:25:40,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-11-17 03:25:40,096 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) [2024-11-17 03:25:40,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:25:40,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-11-17 03:25:40,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:25:40,888 INFO L124 PetriNetUnfolderBase]: 2926/6906 cut-off events. [2024-11-17 03:25:40,889 INFO L125 PetriNetUnfolderBase]: For 15133/15169 co-relation queries the response was YES. [2024-11-17 03:25:40,913 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. [2024-11-17 03:25:40,928 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 66 selfloop transitions, 1 changer transitions 1/78 dead transitions. [2024-11-17 03:25:40,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 78 transitions, 641 flow [2024-11-17 03:25:40,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:25:40,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:25:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-11-17 03:25:40,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6013071895424836 [2024-11-17 03:25:40,929 INFO L175 Difference]: Start difference. First operand has 133 places, 79 transitions, 507 flow. Second operand 3 states and 92 transitions. [2024-11-17 03:25:40,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 78 transitions, 641 flow [2024-11-17 03:25:40,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 78 transitions, 598 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-11-17 03:25:40,962 INFO L231 Difference]: Finished difference. Result has 125 places, 77 transitions, 462 flow [2024-11-17 03:25:40,963 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} [2024-11-17 03:25:40,963 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 77 predicate places. [2024-11-17 03:25:40,963 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 77 transitions, 462 flow [2024-11-17 03:25:40,963 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) [2024-11-17 03:25:40,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:25:40,964 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2024-11-17 03:25:40,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 03:25:40,964 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)] === [2024-11-17 03:25:40,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:25:40,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1637814259, now seen corresponding path program 3 times [2024-11-17 03:25:40,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:25:40,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938849587] [2024-11-17 03:25:40,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:25:40,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:25:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:25:41,305 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 336 proven. 74 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-17 03:25:41,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:25:41,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938849587] [2024-11-17 03:25:41,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938849587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:25:41,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378709169] [2024-11-17 03:25:41,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 03:25:41,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:25:41,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:25:41,307 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) [2024-11-17 03:25:41,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 03:25:41,404 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-17 03:25:41,404 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:25:41,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-17 03:25:41,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:25:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 74 proven. 30 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2024-11-17 03:25:41,881 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:25:42,353 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2024-11-17 03:25:42,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378709169] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:25:42,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:25:42,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 23 [2024-11-17 03:25:42,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867421846] [2024-11-17 03:25:42,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:25:42,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-17 03:25:42,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:25:42,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-17 03:25:42,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2024-11-17 03:25:42,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-11-17 03:25:42,481 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) [2024-11-17 03:25:42,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:25:42,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-11-17 03:25:42,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:25:44,204 INFO L124 PetriNetUnfolderBase]: 2668/6290 cut-off events. [2024-11-17 03:25:44,204 INFO L125 PetriNetUnfolderBase]: For 9810/9871 co-relation queries the response was YES. [2024-11-17 03:25:44,224 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. [2024-11-17 03:25:44,228 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 0 selfloop transitions, 0 changer transitions 636/636 dead transitions. [2024-11-17 03:25:44,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 636 transitions, 3997 flow [2024-11-17 03:25:44,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-17 03:25:44,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-17 03:25:44,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 816 transitions. [2024-11-17 03:25:44,230 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-11-17 03:25:44,230 INFO L175 Difference]: Start difference. First operand has 125 places, 77 transitions, 462 flow. Second operand 25 states and 816 transitions. [2024-11-17 03:25:44,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 636 transitions, 3997 flow [2024-11-17 03:25:44,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 636 transitions, 3958 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-11-17 03:25:44,266 INFO L231 Difference]: Finished difference. Result has 133 places, 0 transitions, 0 flow [2024-11-17 03:25:44,266 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} [2024-11-17 03:25:44,267 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 85 predicate places. [2024-11-17 03:25:44,267 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 0 transitions, 0 flow [2024-11-17 03:25:44,268 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) [2024-11-17 03:25:44,270 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2024-11-17 03:25:44,270 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining) [2024-11-17 03:25:44,270 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2024-11-17 03:25:44,271 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2024-11-17 03:25:44,271 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2024-11-17 03:25:44,271 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2024-11-17 03:25:44,271 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2024-11-17 03:25:44,271 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2024-11-17 03:25:44,271 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (9 of 18 remaining) [2024-11-17 03:25:44,271 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2024-11-17 03:25:44,271 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2024-11-17 03:25:44,271 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2024-11-17 03:25:44,272 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2024-11-17 03:25:44,272 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2024-11-17 03:25:44,272 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2024-11-17 03:25:44,272 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2024-11-17 03:25:44,272 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2024-11-17 03:25:44,272 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2024-11-17 03:25:44,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-17 03:25:44,472 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 [2024-11-17 03:25:44,473 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-17 03:25:44,477 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-17 03:25:44,477 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-17 03:25:44,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:25:44 BasicIcfg [2024-11-17 03:25:44,481 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-17 03:25:44,481 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-17 03:25:44,481 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-17 03:25:44,481 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-17 03:25:44,481 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:25:27" (3/4) ... [2024-11-17 03:25:44,483 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-17 03:25:44,485 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-17 03:25:44,489 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 51 nodes and edges [2024-11-17 03:25:44,490 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2024-11-17 03:25:44,490 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-17 03:25:44,491 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-17 03:25:44,491 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-17 03:25:44,491 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-17 03:25:44,562 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-17 03:25:44,563 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-17 03:25:44,563 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-17 03:25:44,563 INFO L158 Benchmark]: Toolchain (without parser) took 18339.34ms. Allocated memory was 146.8MB in the beginning and 746.6MB in the end (delta: 599.8MB). Free memory was 91.5MB in the beginning and 303.0MB in the end (delta: -211.5MB). Peak memory consumption was 390.5MB. Max. memory is 16.1GB. [2024-11-17 03:25:44,564 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 146.8MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 03:25:44,564 INFO L158 Benchmark]: CACSL2BoogieTranslator took 485.88ms. Allocated memory is still 146.8MB. Free memory was 91.1MB in the beginning and 57.9MB in the end (delta: 33.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-17 03:25:44,564 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.79ms. Allocated memory is still 146.8MB. Free memory was 57.9MB in the beginning and 55.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 03:25:44,564 INFO L158 Benchmark]: Boogie Preprocessor took 37.50ms. Allocated memory is still 146.8MB. Free memory was 55.0MB in the beginning and 52.5MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-17 03:25:44,564 INFO L158 Benchmark]: IcfgBuilder took 704.45ms. Allocated memory was 146.8MB in the beginning and 184.5MB in the end (delta: 37.7MB). Free memory was 52.1MB in the beginning and 76.2MB in the end (delta: -24.1MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2024-11-17 03:25:44,565 INFO L158 Benchmark]: TraceAbstraction took 16982.91ms. Allocated memory was 184.5MB in the beginning and 746.6MB in the end (delta: 562.0MB). Free memory was 75.0MB in the beginning and 307.2MB in the end (delta: -232.3MB). Peak memory consumption was 423.9MB. Max. memory is 16.1GB. [2024-11-17 03:25:44,565 INFO L158 Benchmark]: Witness Printer took 81.70ms. Allocated memory is still 746.6MB. Free memory was 307.2MB in the beginning and 303.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-17 03:25:44,566 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 146.8MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 485.88ms. Allocated memory is still 146.8MB. Free memory was 91.1MB in the beginning and 57.9MB in the end (delta: 33.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.79ms. Allocated memory is still 146.8MB. Free memory was 57.9MB in the beginning and 55.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.50ms. Allocated memory is still 146.8MB. Free memory was 55.0MB in the beginning and 52.5MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * IcfgBuilder took 704.45ms. Allocated memory was 146.8MB in the beginning and 184.5MB in the end (delta: 37.7MB). Free memory was 52.1MB in the beginning and 76.2MB in the end (delta: -24.1MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. * TraceAbstraction took 16982.91ms. Allocated memory was 184.5MB in the beginning and 746.6MB in the end (delta: 562.0MB). Free memory was 75.0MB in the beginning and 307.2MB in the end (delta: -232.3MB). Peak memory consumption was 423.9MB. Max. memory is 16.1GB. * Witness Printer took 81.70ms. Allocated memory is still 746.6MB. Free memory was 307.2MB in the beginning and 303.0MB 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: 16.9s, OverallIterations: 14, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2879 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2729 mSDsluCounter, 770 SdHoareTripleChecker+Invalid, 3.4s 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, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 811 GetRequests, 624 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 1.9s 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.2s 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! [2024-11-17 03:25:44,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE