./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 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/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.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:37:43,901 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:37:43,978 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:37:43,982 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:37:43,983 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:37:44,017 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:37:44,018 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:37:44,019 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:37:44,020 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:37:44,021 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:37:44,022 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:37:44,023 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:37:44,023 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:37:44,025 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:37:44,025 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:37:44,026 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:37:44,026 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:37:44,026 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:37:44,027 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:37:44,027 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:37:44,027 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:37:44,031 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:37:44,032 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:37:44,032 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:37:44,032 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:37:44,032 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:37:44,033 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:37:44,033 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:37:44,033 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:37:44,033 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:37:44,033 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:37:44,034 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:37:44,034 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:37:44,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:37:44,034 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:37:44,035 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:37:44,035 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:37:44,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:37:44,037 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:37:44,037 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:37:44,038 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:37:44,038 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:37:44,038 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a [2024-11-19 09:37:44,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:37:44,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:37:44,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:37:44,326 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:37:44,326 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:37:44,327 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2024-11-19 09:37:45,765 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:37:46,010 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:37:46,011 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2024-11-19 09:37:46,030 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e48bd1ab/9dc0b86692c84d159031cbec31419459/FLAGd5539a729 [2024-11-19 09:37:46,323 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e48bd1ab/9dc0b86692c84d159031cbec31419459 [2024-11-19 09:37:46,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:37:46,328 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:37:46,330 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:37:46,330 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:37:46,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:37:46,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:37:46" (1/1) ... [2024-11-19 09:37:46,339 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6750d9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:46, skipping insertion in model container [2024-11-19 09:37:46,339 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:37:46" (1/1) ... [2024-11-19 09:37:46,387 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:37:46,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:37:46,920 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:37:47,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:37:47,077 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:37:47,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:47 WrapperNode [2024-11-19 09:37:47,078 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:37:47,079 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:37:47,080 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:37:47,080 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:37:47,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:47" (1/1) ... [2024-11-19 09:37:47,109 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:47" (1/1) ... [2024-11-19 09:37:47,149 INFO L138 Inliner]: procedures = 263, calls = 74, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 143 [2024-11-19 09:37:47,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:37:47,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:37:47,151 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:37:47,151 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:37:47,161 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:47" (1/1) ... [2024-11-19 09:37:47,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:47" (1/1) ... [2024-11-19 09:37:47,166 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:47" (1/1) ... [2024-11-19 09:37:47,188 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]. [2024-11-19 09:37:47,189 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:47" (1/1) ... [2024-11-19 09:37:47,189 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:47" (1/1) ... [2024-11-19 09:37:47,199 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:47" (1/1) ... [2024-11-19 09:37:47,205 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:47" (1/1) ... [2024-11-19 09:37:47,212 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:47" (1/1) ... [2024-11-19 09:37:47,214 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:47" (1/1) ... [2024-11-19 09:37:47,220 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:37:47,221 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:37:47,221 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:37:47,221 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:37:47,222 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:47" (1/1) ... [2024-11-19 09:37:47,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:37:47,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:37:47,259 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 09:37:47,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 09:37:47,312 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 09:37:47,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 09:37:47,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 09:37:47,314 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 09:37:47,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:37:47,315 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-19 09:37:47,315 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-19 09:37:47,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:37:47,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:37:47,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:37:47,317 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:37:47,442 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:37:47,444 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:37:47,736 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:37:47,737 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:37:48,046 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:37:48,047 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 09:37:48,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:37:48 BoogieIcfgContainer [2024-11-19 09:37:48,048 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:37:48,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:37:48,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:37:48,053 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:37:48,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:37:46" (1/3) ... [2024-11-19 09:37:48,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2466e382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:37:48, skipping insertion in model container [2024-11-19 09:37:48,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:47" (2/3) ... [2024-11-19 09:37:48,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2466e382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:37:48, skipping insertion in model container [2024-11-19 09:37:48,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:37:48" (3/3) ... [2024-11-19 09:37:48,058 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_05-funloop_hard2.i [2024-11-19 09:37:48,076 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:37:48,076 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2024-11-19 09:37:48,076 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:37:48,121 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:37:48,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 43 transitions, 90 flow [2024-11-19 09:37:48,198 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2024-11-19 09:37:48,199 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:37:48,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 42 events. 3/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 122 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-11-19 09:37:48,203 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 43 transitions, 90 flow [2024-11-19 09:37:48,208 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 42 transitions, 87 flow [2024-11-19 09:37:48,222 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:37:48,230 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;@3702071d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:37:48,231 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-19 09:37:48,240 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:37:48,241 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-19 09:37:48,241 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:37:48,241 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:37:48,242 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:37:48,243 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:37:48,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:37:48,249 INFO L85 PathProgramCache]: Analyzing trace with hash -42604094, now seen corresponding path program 1 times [2024-11-19 09:37:48,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:37:48,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347238929] [2024-11-19 09:37:48,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:37:48,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:37:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:37:48,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:37:48,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:37:48,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347238929] [2024-11-19 09:37:48,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347238929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:37:48,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:37:48,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:37:48,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454710775] [2024-11-19 09:37:48,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:37:48,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:37:48,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:37:48,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:37:48,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:37:48,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43 [2024-11-19 09:37:48,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:37:48,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:37:48,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43 [2024-11-19 09:37:48,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:37:48,817 INFO L124 PetriNetUnfolderBase]: 114/317 cut-off events. [2024-11-19 09:37:48,819 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:37:48,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 317 events. 114/317 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1617 event pairs, 91 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 536. Up to 229 conditions per place. [2024-11-19 09:37:48,825 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 25 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2024-11-19 09:37:48,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 143 flow [2024-11-19 09:37:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:37:48,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:37:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-11-19 09:37:48,838 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6124031007751938 [2024-11-19 09:37:48,840 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 87 flow. Second operand 3 states and 79 transitions. [2024-11-19 09:37:48,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 143 flow [2024-11-19 09:37:48,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:37:48,845 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 98 flow [2024-11-19 09:37:48,847 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2024-11-19 09:37:48,850 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2024-11-19 09:37:48,850 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 98 flow [2024-11-19 09:37:48,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:37:48,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:37:48,851 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:37:48,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:37:48,852 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:37:48,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:37:48,852 INFO L85 PathProgramCache]: Analyzing trace with hash -361866624, now seen corresponding path program 1 times [2024-11-19 09:37:48,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:37:48,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326926034] [2024-11-19 09:37:48,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:37:48,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:37:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:37:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:37:48,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:37:48,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326926034] [2024-11-19 09:37:48,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326926034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:37:48,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753788141] [2024-11-19 09:37:48,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:37:48,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:37:48,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:37:48,970 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:37:48,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:37:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:37:49,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 09:37:49,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:37:49,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:37:49,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:37:49,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:37:49,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753788141] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:37:49,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:37:49,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-19 09:37:49,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866544748] [2024-11-19 09:37:49,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:37:49,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:37:49,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:37:49,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:37:49,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:37:49,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43 [2024-11-19 09:37:49,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 98 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:37:49,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:37:49,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43 [2024-11-19 09:37:49,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:37:49,293 INFO L124 PetriNetUnfolderBase]: 114/320 cut-off events. [2024-11-19 09:37:49,293 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:37:49,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 566 conditions, 320 events. 114/320 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1617 event pairs, 91 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 555. Up to 229 conditions per place. [2024-11-19 09:37:49,298 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 25 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2024-11-19 09:37:49,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 170 flow [2024-11-19 09:37:49,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:37:49,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:37:49,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-11-19 09:37:49,302 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5232558139534884 [2024-11-19 09:37:49,303 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 98 flow. Second operand 6 states and 135 transitions. [2024-11-19 09:37:49,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 170 flow [2024-11-19 09:37:49,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 166 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 09:37:49,305 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 130 flow [2024-11-19 09:37:49,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-11-19 09:37:49,309 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-11-19 09:37:49,309 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 130 flow [2024-11-19 09:37:49,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:37:49,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:37:49,309 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:37:49,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 09:37:49,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:37:49,511 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:37:49,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:37:49,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1948715364, now seen corresponding path program 2 times [2024-11-19 09:37:49,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:37:49,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537477425] [2024-11-19 09:37:49,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:37:49,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:37:49,552 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:37:49,552 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:37:49,735 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 09:37:49,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:37:49,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537477425] [2024-11-19 09:37:49,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537477425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:37:49,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:37:49,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:37:49,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759449714] [2024-11-19 09:37:49,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:37:49,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:37:49,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:37:49,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:37:49,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:37:49,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-19 09:37:49,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 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) [2024-11-19 09:37:49,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:37:49,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-19 09:37:49,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:37:50,026 INFO L124 PetriNetUnfolderBase]: 226/558 cut-off events. [2024-11-19 09:37:50,026 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:37:50,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1041 conditions, 558 events. 226/558 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2836 event pairs, 117 based on Foata normal form. 0/496 useless extension candidates. Maximal degree in co-relation 1008. Up to 288 conditions per place. [2024-11-19 09:37:50,031 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 62 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2024-11-19 09:37:50,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 326 flow [2024-11-19 09:37:50,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:37:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:37:50,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-11-19 09:37:50,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6325581395348837 [2024-11-19 09:37:50,033 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 130 flow. Second operand 5 states and 136 transitions. [2024-11-19 09:37:50,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 326 flow [2024-11-19 09:37:50,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 312 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-19 09:37:50,039 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 138 flow [2024-11-19 09:37:50,040 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2024-11-19 09:37:50,041 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2024-11-19 09:37:50,041 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 138 flow [2024-11-19 09:37:50,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 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) [2024-11-19 09:37:50,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:37:50,042 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:37:50,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:37:50,043 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:37:50,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:37:50,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1948715363, now seen corresponding path program 1 times [2024-11-19 09:37:50,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:37:50,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021886448] [2024-11-19 09:37:50,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:37:50,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:37:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:37:50,153 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 09:37:50,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:37:50,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021886448] [2024-11-19 09:37:50,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021886448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:37:50,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:37:50,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:37:50,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635005674] [2024-11-19 09:37:50,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:37:50,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:37:50,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:37:50,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:37:50,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:37:50,184 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-19 09:37:50,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:37:50,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:37:50,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-19 09:37:50,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:37:50,312 INFO L124 PetriNetUnfolderBase]: 198/477 cut-off events. [2024-11-19 09:37:50,312 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2024-11-19 09:37:50,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1041 conditions, 477 events. 198/477 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2246 event pairs, 39 based on Foata normal form. 0/443 useless extension candidates. Maximal degree in co-relation 1011. Up to 280 conditions per place. [2024-11-19 09:37:50,315 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 41 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-11-19 09:37:50,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 56 transitions, 250 flow [2024-11-19 09:37:50,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:37:50,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:37:50,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-11-19 09:37:50,317 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5697674418604651 [2024-11-19 09:37:50,318 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 138 flow. Second operand 4 states and 98 transitions. [2024-11-19 09:37:50,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 56 transitions, 250 flow [2024-11-19 09:37:50,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 56 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:37:50,320 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 136 flow [2024-11-19 09:37:50,320 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-11-19 09:37:50,321 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-11-19 09:37:50,321 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 136 flow [2024-11-19 09:37:50,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:37:50,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:37:50,322 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:37:50,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:37:50,322 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:37:50,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:37:50,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1918963906, now seen corresponding path program 1 times [2024-11-19 09:37:50,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:37:50,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134562299] [2024-11-19 09:37:50,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:37:50,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:37:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:37:50,418 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 09:37:50,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:37:50,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134562299] [2024-11-19 09:37:50,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134562299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:37:50,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:37:50,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:37:50,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290658474] [2024-11-19 09:37:50,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:37:50,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:37:50,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:37:50,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:37:50,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:37:50,461 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-19 09:37:50,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:37:50,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:37:50,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-19 09:37:50,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:37:50,571 INFO L124 PetriNetUnfolderBase]: 198/482 cut-off events. [2024-11-19 09:37:50,571 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2024-11-19 09:37:50,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1076 conditions, 482 events. 198/482 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2325 event pairs, 104 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 1046. Up to 260 conditions per place. [2024-11-19 09:37:50,575 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 39 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2024-11-19 09:37:50,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 258 flow [2024-11-19 09:37:50,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:37:50,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:37:50,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-11-19 09:37:50,576 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5116279069767442 [2024-11-19 09:37:50,576 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 136 flow. Second operand 4 states and 88 transitions. [2024-11-19 09:37:50,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 258 flow [2024-11-19 09:37:50,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 50 transitions, 240 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:37:50,579 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 128 flow [2024-11-19 09:37:50,579 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2024-11-19 09:37:50,580 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2024-11-19 09:37:50,580 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 128 flow [2024-11-19 09:37:50,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:37:50,580 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:37:50,580 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:37:50,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:37:50,581 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:37:50,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:37:50,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1918963907, now seen corresponding path program 1 times [2024-11-19 09:37:50,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:37:50,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023534951] [2024-11-19 09:37:50,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:37:50,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:37:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:37:50,689 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:37:50,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:37:50,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023534951] [2024-11-19 09:37:50,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023534951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:37:50,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355327767] [2024-11-19 09:37:50,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:37:50,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:37:50,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:37:50,692 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:37:50,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 09:37:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:37:50,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 09:37:50,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:37:50,808 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:37:50,810 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:37:50,879 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:37:50,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355327767] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:37:50,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:37:50,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-19 09:37:50,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867333136] [2024-11-19 09:37:50,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:37:50,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 09:37:50,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:37:50,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 09:37:50,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 09:37:50,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43 [2024-11-19 09:37:50,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 128 flow. Second operand has 13 states, 13 states have (on average 18.384615384615383) internal successors, (239), 13 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:37:50,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:37:50,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43 [2024-11-19 09:37:50,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:37:51,007 INFO L124 PetriNetUnfolderBase]: 198/477 cut-off events. [2024-11-19 09:37:51,007 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-11-19 09:37:51,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 477 events. 198/477 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2173 event pairs, 169 based on Foata normal form. 6/467 useless extension candidates. Maximal degree in co-relation 1017. Up to 397 conditions per place. [2024-11-19 09:37:51,011 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 27 selfloop transitions, 11 changer transitions 0/46 dead transitions. [2024-11-19 09:37:51,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 46 transitions, 240 flow [2024-11-19 09:37:51,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:37:51,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:37:51,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 246 transitions. [2024-11-19 09:37:51,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2024-11-19 09:37:51,013 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 128 flow. Second operand 12 states and 246 transitions. [2024-11-19 09:37:51,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 46 transitions, 240 flow [2024-11-19 09:37:51,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 46 transitions, 234 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:37:51,015 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 206 flow [2024-11-19 09:37:51,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=206, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2024-11-19 09:37:51,017 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-11-19 09:37:51,018 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 206 flow [2024-11-19 09:37:51,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.384615384615383) internal successors, (239), 13 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:37:51,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:37:51,019 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:37:51,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 09:37:51,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-19 09:37:51,220 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:37:51,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:37:51,220 INFO L85 PathProgramCache]: Analyzing trace with hash 909392707, now seen corresponding path program 2 times [2024-11-19 09:37:51,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:37:51,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761962353] [2024-11-19 09:37:51,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:37:51,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:37:51,235 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:37:51,236 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:37:51,343 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 09:37:51,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:37:51,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761962353] [2024-11-19 09:37:51,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761962353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:37:51,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:37:51,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:37:51,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330525461] [2024-11-19 09:37:51,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:37:51,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:37:51,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:37:51,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:37:51,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:37:51,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-19 09:37:51,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 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) [2024-11-19 09:37:51,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:37:51,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-19 09:37:51,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:37:51,615 INFO L124 PetriNetUnfolderBase]: 310/694 cut-off events. [2024-11-19 09:37:51,615 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2024-11-19 09:37:51,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1547 conditions, 694 events. 310/694 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3190 event pairs, 172 based on Foata normal form. 0/630 useless extension candidates. Maximal degree in co-relation 1470. Up to 462 conditions per place. [2024-11-19 09:37:51,620 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 62 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2024-11-19 09:37:51,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 418 flow [2024-11-19 09:37:51,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:37:51,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:37:51,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-11-19 09:37:51,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5488372093023256 [2024-11-19 09:37:51,622 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 206 flow. Second operand 5 states and 118 transitions. [2024-11-19 09:37:51,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 418 flow [2024-11-19 09:37:51,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 370 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-11-19 09:37:51,626 INFO L231 Difference]: Finished difference. Result has 65 places, 48 transitions, 184 flow [2024-11-19 09:37:51,627 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=65, PETRI_TRANSITIONS=48} [2024-11-19 09:37:51,627 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2024-11-19 09:37:51,628 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 184 flow [2024-11-19 09:37:51,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 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) [2024-11-19 09:37:51,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:37:51,628 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:37:51,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 09:37:51,629 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:37:51,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:37:51,630 INFO L85 PathProgramCache]: Analyzing trace with hash -546771875, now seen corresponding path program 1 times [2024-11-19 09:37:51,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:37:51,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274740291] [2024-11-19 09:37:51,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:37:51,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:37:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:37:51,886 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 09:37:51,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:37:51,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274740291] [2024-11-19 09:37:51,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274740291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:37:51,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579884914] [2024-11-19 09:37:51,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:37:51,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:37:51,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:37:51,889 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:37:51,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 09:37:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:37:51,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 09:37:52,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:37:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 09:37:52,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:37:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 09:37:52,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579884914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:37:52,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:37:52,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-19 09:37:52,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413063020] [2024-11-19 09:37:52,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:37:52,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 09:37:52,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:37:52,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 09:37:52,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-19 09:37:52,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-19 09:37:52,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 48 transitions, 184 flow. Second operand has 14 states, 14 states have (on average 16.0) internal successors, (224), 14 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:37:52,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:37:52,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-19 09:37:52,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:37:53,322 INFO L124 PetriNetUnfolderBase]: 662/1448 cut-off events. [2024-11-19 09:37:53,323 INFO L125 PetriNetUnfolderBase]: For 487/487 co-relation queries the response was YES. [2024-11-19 09:37:53,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3374 conditions, 1448 events. 662/1448 cut-off events. For 487/487 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 7063 event pairs, 76 based on Foata normal form. 140/1535 useless extension candidates. Maximal degree in co-relation 3318. Up to 254 conditions per place. [2024-11-19 09:37:53,353 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 195 selfloop transitions, 12 changer transitions 0/213 dead transitions. [2024-11-19 09:37:53,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 213 transitions, 1082 flow [2024-11-19 09:37:53,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:37:53,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:37:53,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 343 transitions. [2024-11-19 09:37:53,356 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6647286821705426 [2024-11-19 09:37:53,356 INFO L175 Difference]: Start difference. First operand has 65 places, 48 transitions, 184 flow. Second operand 12 states and 343 transitions. [2024-11-19 09:37:53,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 213 transitions, 1082 flow [2024-11-19 09:37:53,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 213 transitions, 1060 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:37:53,362 INFO L231 Difference]: Finished difference. Result has 80 places, 54 transitions, 259 flow [2024-11-19 09:37:53,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=259, PETRI_PLACES=80, PETRI_TRANSITIONS=54} [2024-11-19 09:37:53,364 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2024-11-19 09:37:53,365 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 54 transitions, 259 flow [2024-11-19 09:37:53,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.0) internal successors, (224), 14 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:37:53,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:37:53,367 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:37:53,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 09:37:53,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:37:53,572 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:37:53,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:37:53,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1322317096, now seen corresponding path program 1 times [2024-11-19 09:37:53,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:37:53,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560228094] [2024-11-19 09:37:53,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:37:53,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:37:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:37:53,804 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 09:37:53,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:37:53,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560228094] [2024-11-19 09:37:53,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560228094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:37:53,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332955097] [2024-11-19 09:37:53,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:37:53,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:37:53,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:37:53,807 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:37:53,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 09:37:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:37:53,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 09:37:53,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:37:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 09:37:54,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:37:54,230 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 09:37:54,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332955097] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:37:54,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:37:54,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-19 09:37:54,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863303525] [2024-11-19 09:37:54,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:37:54,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 09:37:54,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:37:54,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 09:37:54,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-19 09:37:54,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-19 09:37:54,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 54 transitions, 259 flow. Second operand has 14 states, 14 states have (on average 16.0) internal successors, (224), 14 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:37:54,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:37:54,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-19 09:37:54,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:37:55,190 INFO L124 PetriNetUnfolderBase]: 1250/2746 cut-off events. [2024-11-19 09:37:55,190 INFO L125 PetriNetUnfolderBase]: For 3118/3118 co-relation queries the response was YES. [2024-11-19 09:37:55,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7323 conditions, 2746 events. 1250/2746 cut-off events. For 3118/3118 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 14937 event pairs, 306 based on Foata normal form. 224/2938 useless extension candidates. Maximal degree in co-relation 7260. Up to 782 conditions per place. [2024-11-19 09:37:55,212 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 211 selfloop transitions, 12 changer transitions 0/228 dead transitions. [2024-11-19 09:37:55,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 228 transitions, 1729 flow [2024-11-19 09:37:55,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:37:55,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:37:55,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 289 transitions. [2024-11-19 09:37:55,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.560077519379845 [2024-11-19 09:37:55,214 INFO L175 Difference]: Start difference. First operand has 80 places, 54 transitions, 259 flow. Second operand 12 states and 289 transitions. [2024-11-19 09:37:55,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 228 transitions, 1729 flow [2024-11-19 09:37:55,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 228 transitions, 1548 flow, removed 70 selfloop flow, removed 3 redundant places. [2024-11-19 09:37:55,223 INFO L231 Difference]: Finished difference. Result has 94 places, 60 transitions, 319 flow [2024-11-19 09:37:55,223 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=319, PETRI_PLACES=94, PETRI_TRANSITIONS=60} [2024-11-19 09:37:55,224 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 51 predicate places. [2024-11-19 09:37:55,224 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 60 transitions, 319 flow [2024-11-19 09:37:55,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.0) internal successors, (224), 14 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:37:55,225 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:37:55,225 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-19 09:37:55,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 09:37:55,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:37:55,430 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:37:55,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:37:55,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1788139428, now seen corresponding path program 2 times [2024-11-19 09:37:55,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:37:55,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717813654] [2024-11-19 09:37:55,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:37:55,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:37:55,468 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:37:55,468 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:37:55,903 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 21 proven. 37 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 09:37:55,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:37:55,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717813654] [2024-11-19 09:37:55,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717813654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:37:55,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311049350] [2024-11-19 09:37:55,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:37:55,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:37:55,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:37:55,907 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:37:55,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 09:37:56,044 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:37:56,045 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:37:56,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 09:37:56,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:37:56,411 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 09:37:56,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:37:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 09:37:56,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311049350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:37:56,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:37:56,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-19 09:37:56,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501844494] [2024-11-19 09:37:56,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:37:56,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 09:37:56,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:37:56,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 09:37:56,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2024-11-19 09:37:57,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-19 09:37:57,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 60 transitions, 319 flow. Second operand has 23 states, 23 states have (on average 17.17391304347826) internal successors, (395), 23 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:37:57,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:37:57,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-19 09:37:57,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:37:59,372 INFO L124 PetriNetUnfolderBase]: 2396/5190 cut-off events. [2024-11-19 09:37:59,373 INFO L125 PetriNetUnfolderBase]: For 9480/9480 co-relation queries the response was YES. [2024-11-19 09:37:59,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14779 conditions, 5190 events. 2396/5190 cut-off events. For 9480/9480 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 29815 event pairs, 0 based on Foata normal form. 456/5646 useless extension candidates. Maximal degree in co-relation 14708. Up to 533 conditions per place. [2024-11-19 09:37:59,427 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 538 selfloop transitions, 23 changer transitions 22/588 dead transitions. [2024-11-19 09:37:59,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 588 transitions, 4147 flow [2024-11-19 09:37:59,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 09:37:59,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-19 09:37:59,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 699 transitions. [2024-11-19 09:37:59,431 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6773255813953488 [2024-11-19 09:37:59,431 INFO L175 Difference]: Start difference. First operand has 94 places, 60 transitions, 319 flow. Second operand 24 states and 699 transitions. [2024-11-19 09:37:59,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 588 transitions, 4147 flow [2024-11-19 09:37:59,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 588 transitions, 3742 flow, removed 154 selfloop flow, removed 7 redundant places. [2024-11-19 09:37:59,457 INFO L231 Difference]: Finished difference. Result has 115 places, 69 transitions, 411 flow [2024-11-19 09:37:59,457 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=411, PETRI_PLACES=115, PETRI_TRANSITIONS=69} [2024-11-19 09:37:59,458 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 72 predicate places. [2024-11-19 09:37:59,458 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 69 transitions, 411 flow [2024-11-19 09:37:59,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 17.17391304347826) internal successors, (395), 23 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:37:59,459 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:37:59,459 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-19 09:37:59,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 09:37:59,660 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,SelfDestructingSolverStorable9 [2024-11-19 09:37:59,660 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:37:59,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:37:59,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1751442429, now seen corresponding path program 2 times [2024-11-19 09:37:59,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:37:59,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589726752] [2024-11-19 09:37:59,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:37:59,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:37:59,698 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:37:59,701 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:37:59,999 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 09:37:59,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:37:59,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589726752] [2024-11-19 09:38:00,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589726752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:38:00,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417385530] [2024-11-19 09:38:00,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:38:00,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:38:00,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:38:00,002 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:38:00,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 09:38:00,136 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:38:00,136 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:38:00,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 09:38:00,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:38:00,617 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 46 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 09:38:00,617 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:38:01,140 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 42 proven. 16 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 09:38:01,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417385530] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:38:01,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:38:01,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-19 09:38:01,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907384398] [2024-11-19 09:38:01,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:38:01,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 09:38:01,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:38:01,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 09:38:01,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2024-11-19 09:38:01,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-19 09:38:01,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 69 transitions, 411 flow. Second operand has 23 states, 23 states have (on average 17.17391304347826) internal successors, (395), 23 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:38:01,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:38:01,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-19 09:38:01,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:38:03,100 INFO L124 PetriNetUnfolderBase]: 2711/5946 cut-off events. [2024-11-19 09:38:03,100 INFO L125 PetriNetUnfolderBase]: For 11939/11939 co-relation queries the response was YES. [2024-11-19 09:38:03,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17492 conditions, 5946 events. 2711/5946 cut-off events. For 11939/11939 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 36017 event pairs, 0 based on Foata normal form. 189/6135 useless extension candidates. Maximal degree in co-relation 17418. Up to 945 conditions per place. [2024-11-19 09:38:03,156 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 407 selfloop transitions, 14 changer transitions 0/425 dead transitions. [2024-11-19 09:38:03,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 425 transitions, 3833 flow [2024-11-19 09:38:03,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 09:38:03,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 09:38:03,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 349 transitions. [2024-11-19 09:38:03,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5410852713178295 [2024-11-19 09:38:03,159 INFO L175 Difference]: Start difference. First operand has 115 places, 69 transitions, 411 flow. Second operand 15 states and 349 transitions. [2024-11-19 09:38:03,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 425 transitions, 3833 flow [2024-11-19 09:38:03,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 425 transitions, 3264 flow, removed 169 selfloop flow, removed 14 redundant places. [2024-11-19 09:38:03,186 INFO L231 Difference]: Finished difference. Result has 114 places, 70 transitions, 391 flow [2024-11-19 09:38:03,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=391, PETRI_PLACES=114, PETRI_TRANSITIONS=70} [2024-11-19 09:38:03,187 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 71 predicate places. [2024-11-19 09:38:03,187 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 70 transitions, 391 flow [2024-11-19 09:38:03,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 17.17391304347826) internal successors, (395), 23 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:38:03,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:38:03,188 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:38:03,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 09:38:03,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:38:03,393 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:38:03,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:38:03,394 INFO L85 PathProgramCache]: Analyzing trace with hash 237533891, now seen corresponding path program 1 times [2024-11-19 09:38:03,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:38:03,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272338917] [2024-11-19 09:38:03,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:38:03,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:38:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:38:03,482 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-11-19 09:38:03,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:38:03,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272338917] [2024-11-19 09:38:03,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272338917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:38:03,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:38:03,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:38:03,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295451159] [2024-11-19 09:38:03,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:38:03,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:38:03,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:38:03,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:38:03,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:38:03,496 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2024-11-19 09:38:03,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 70 transitions, 391 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:38:03,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:38:03,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2024-11-19 09:38:03,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:38:04,394 INFO L124 PetriNetUnfolderBase]: 2711/5874 cut-off events. [2024-11-19 09:38:04,394 INFO L125 PetriNetUnfolderBase]: For 9430/9430 co-relation queries the response was YES. [2024-11-19 09:38:04,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17207 conditions, 5874 events. 2711/5874 cut-off events. For 9430/9430 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 35173 event pairs, 2604 based on Foata normal form. 63/5936 useless extension candidates. Maximal degree in co-relation 17136. Up to 5432 conditions per place. [2024-11-19 09:38:04,418 INFO L140 encePairwiseOnDemand]: 41/43 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2024-11-19 09:38:04,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 69 transitions, 521 flow [2024-11-19 09:38:04,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:38:04,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:38:04,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-11-19 09:38:04,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5736434108527132 [2024-11-19 09:38:04,420 INFO L175 Difference]: Start difference. First operand has 114 places, 70 transitions, 391 flow. Second operand 3 states and 74 transitions. [2024-11-19 09:38:04,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 69 transitions, 521 flow [2024-11-19 09:38:04,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 69 transitions, 496 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-11-19 09:38:04,442 INFO L231 Difference]: Finished difference. Result has 105 places, 0 transitions, 0 flow [2024-11-19 09:38:04,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=105, PETRI_TRANSITIONS=0} [2024-11-19 09:38:04,443 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 62 predicate places. [2024-11-19 09:38:04,443 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 0 transitions, 0 flow [2024-11-19 09:38:04,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:38:04,445 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2024-11-19 09:38:04,446 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining) [2024-11-19 09:38:04,446 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2024-11-19 09:38:04,446 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2024-11-19 09:38:04,446 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2024-11-19 09:38:04,446 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2024-11-19 09:38:04,446 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2024-11-19 09:38:04,446 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2024-11-19 09:38:04,447 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (9 of 18 remaining) [2024-11-19 09:38:04,447 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2024-11-19 09:38:04,447 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2024-11-19 09:38:04,447 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2024-11-19 09:38:04,447 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2024-11-19 09:38:04,447 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2024-11-19 09:38:04,447 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2024-11-19 09:38:04,447 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2024-11-19 09:38:04,447 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2024-11-19 09:38:04,447 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2024-11-19 09:38:04,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 09:38:04,448 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1] [2024-11-19 09:38:04,455 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 09:38:04,455 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 09:38:04,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:38:04 BasicIcfg [2024-11-19 09:38:04,460 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 09:38:04,461 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 09:38:04,461 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 09:38:04,461 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 09:38:04,461 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:37:48" (3/4) ... [2024-11-19 09:38:04,463 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 09:38:04,466 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-19 09:38:04,473 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 83 nodes and edges [2024-11-19 09:38:04,473 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-19 09:38:04,473 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-19 09:38:04,473 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-19 09:38:04,573 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 09:38:04,574 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 09:38:04,574 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 09:38:04,574 INFO L158 Benchmark]: Toolchain (without parser) took 18246.01ms. Allocated memory was 151.0MB in the beginning and 518.0MB in the end (delta: 367.0MB). Free memory was 79.0MB in the beginning and 293.6MB in the end (delta: -214.6MB). Peak memory consumption was 153.0MB. Max. memory is 16.1GB. [2024-11-19 09:38:04,575 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory is still 102.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 09:38:04,575 INFO L158 Benchmark]: CACSL2BoogieTranslator took 749.13ms. Allocated memory is still 151.0MB. Free memory was 78.9MB in the beginning and 104.6MB in the end (delta: -25.7MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. [2024-11-19 09:38:04,575 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.94ms. Allocated memory is still 151.0MB. Free memory was 104.6MB in the beginning and 102.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 09:38:04,576 INFO L158 Benchmark]: Boogie Preprocessor took 70.34ms. Allocated memory is still 151.0MB. Free memory was 102.0MB in the beginning and 99.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 09:38:04,576 INFO L158 Benchmark]: RCFGBuilder took 826.89ms. Allocated memory was 151.0MB in the beginning and 216.0MB in the end (delta: 65.0MB). Free memory was 98.9MB in the beginning and 152.5MB in the end (delta: -53.6MB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. [2024-11-19 09:38:04,577 INFO L158 Benchmark]: TraceAbstraction took 16410.46ms. Allocated memory was 216.0MB in the beginning and 518.0MB in the end (delta: 302.0MB). Free memory was 151.4MB in the beginning and 297.8MB in the end (delta: -146.4MB). Peak memory consumption was 406.1MB. Max. memory is 16.1GB. [2024-11-19 09:38:04,577 INFO L158 Benchmark]: Witness Printer took 113.22ms. Allocated memory is still 518.0MB. Free memory was 297.8MB in the beginning and 293.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 09:38:04,578 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory is still 102.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 749.13ms. Allocated memory is still 151.0MB. Free memory was 78.9MB in the beginning and 104.6MB in the end (delta: -25.7MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.94ms. Allocated memory is still 151.0MB. Free memory was 104.6MB in the beginning and 102.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.34ms. Allocated memory is still 151.0MB. Free memory was 102.0MB in the beginning and 99.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 826.89ms. Allocated memory was 151.0MB in the beginning and 216.0MB in the end (delta: 65.0MB). Free memory was 98.9MB in the beginning and 152.5MB in the end (delta: -53.6MB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. * TraceAbstraction took 16410.46ms. Allocated memory was 216.0MB in the beginning and 518.0MB in the end (delta: 302.0MB). Free memory was 151.4MB in the beginning and 297.8MB in the end (delta: -146.4MB). Peak memory consumption was 406.1MB. Max. memory is 16.1GB. * Witness Printer took 113.22ms. Allocated memory is still 518.0MB. Free memory was 297.8MB in the beginning and 293.6MB 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, 55 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: 16.3s, OverallIterations: 12, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2726 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2597 mSDsluCounter, 454 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 450 mSDsCounter, 63 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6141 IncrementalHoareTripleChecker+Invalid, 6204 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 63 mSolverCounterUnsat, 4 mSDtfsCounter, 6141 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 408 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=411occurred in iteration=10, InterpolantAutomatonStates: 105, 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, 4.6s InterpolantComputationTime, 445 NumberOfCodeBlocks, 431 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 584 ConstructedInterpolants, 0 QuantifiedInterpolants, 6941 SizeOfPredicates, 20 NumberOfNonLiveVariables, 1779 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 24 InterpolantComputations, 6 PerfectInterpolantSequences, 984/1280 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! [2024-11-19 09:38:04,607 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