./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d 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/weaver/popl20-counter-fun.wvr.c -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 fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:51:33,798 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:51:33,863 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:51:33,877 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:51:33,878 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:51:33,899 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:51:33,899 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:51:33,899 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:51:33,900 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:51:33,900 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:51:33,900 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:51:33,901 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:51:33,902 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:51:33,902 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:51:33,904 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:51:33,905 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:51:33,905 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:51:33,905 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:51:33,906 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:51:33,906 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:51:33,906 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:51:33,911 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:51:33,911 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:51:33,911 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:51:33,911 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:51:33,912 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:51:33,912 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:51:33,912 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:51:33,912 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:51:33,913 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:51:33,913 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:51:33,913 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:51:33,913 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:51:33,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:51:33,915 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:51:33,917 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:51:33,917 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:51:33,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:51:33,918 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:51:33,918 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:51:33,918 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:51:33,919 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:51:33,919 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 [2024-11-09 10:51:34,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:51:34,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:51:34,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:51:34,220 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:51:34,220 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:51:34,222 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-11-09 10:51:35,654 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:51:35,825 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:51:35,825 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-11-09 10:51:35,832 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14f03084b/6768211ea95d4735b8e68fb0c57ecb4b/FLAG3b4811e04 [2024-11-09 10:51:36,220 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14f03084b/6768211ea95d4735b8e68fb0c57ecb4b [2024-11-09 10:51:36,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:51:36,224 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:51:36,226 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:51:36,226 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:51:36,230 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:51:36,230 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:51:36" (1/1) ... [2024-11-09 10:51:36,231 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f63ee44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:36, skipping insertion in model container [2024-11-09 10:51:36,231 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:51:36" (1/1) ... [2024-11-09 10:51:36,247 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:51:36,451 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:51:36,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:51:36,462 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:51:36,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:51:36,508 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:51:36,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:36 WrapperNode [2024-11-09 10:51:36,508 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:51:36,510 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:51:36,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:51:36,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:51:36,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:36" (1/1) ... [2024-11-09 10:51:36,531 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:36" (1/1) ... [2024-11-09 10:51:36,564 INFO L138 Inliner]: procedures = 23, calls = 36, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 193 [2024-11-09 10:51:36,568 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:51:36,569 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:51:36,569 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:51:36,569 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:51:36,581 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:36" (1/1) ... [2024-11-09 10:51:36,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:36" (1/1) ... [2024-11-09 10:51:36,589 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:36" (1/1) ... [2024-11-09 10:51:36,608 INFO L175 MemorySlicer]: Split 14 memory accesses to 2 slices as follows [2, 12]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-09 10:51:36,612 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:36" (1/1) ... [2024-11-09 10:51:36,612 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:36" (1/1) ... [2024-11-09 10:51:36,618 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:36" (1/1) ... [2024-11-09 10:51:36,621 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:36" (1/1) ... [2024-11-09 10:51:36,623 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:36" (1/1) ... [2024-11-09 10:51:36,624 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:36" (1/1) ... [2024-11-09 10:51:36,626 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:51:36,627 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:51:36,627 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:51:36,628 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:51:36,628 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:36" (1/1) ... [2024-11-09 10:51:36,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:51:36,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:36,656 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) [2024-11-09 10:51:36,665 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 [2024-11-09 10:51:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:51:36,709 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 10:51:36,709 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 10:51:36,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 10:51:36,710 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 10:51:36,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:51:36,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 10:51:36,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 10:51:36,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 10:51:36,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 10:51:36,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 10:51:36,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 10:51:36,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:51:36,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:51:36,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 10:51:36,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 10:51:36,714 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:51:36,811 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:51:36,812 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:51:37,151 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:51:37,151 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:51:37,539 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:51:37,540 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 10:51:37,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:51:37 BoogieIcfgContainer [2024-11-09 10:51:37,540 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:51:37,545 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:51:37,545 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:51:37,549 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:51:37,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:51:36" (1/3) ... [2024-11-09 10:51:37,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc46054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:51:37, skipping insertion in model container [2024-11-09 10:51:37,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:36" (2/3) ... [2024-11-09 10:51:37,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc46054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:51:37, skipping insertion in model container [2024-11-09 10:51:37,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:51:37" (3/3) ... [2024-11-09 10:51:37,554 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2024-11-09 10:51:37,572 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:51:37,573 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-11-09 10:51:37,573 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:51:37,656 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 10:51:37,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 54 transitions, 122 flow [2024-11-09 10:51:37,796 INFO L124 PetriNetUnfolderBase]: 4/52 cut-off events. [2024-11-09 10:51:37,798 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:51:37,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 52 events. 4/52 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 160 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-11-09 10:51:37,831 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 54 transitions, 122 flow [2024-11-09 10:51:37,839 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 51 transitions, 114 flow [2024-11-09 10:51:37,858 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:51:37,876 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;@3f739cad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:51:37,876 INFO L334 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2024-11-09 10:51:37,883 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:51:37,883 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-09 10:51:37,883 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:51:37,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:37,884 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:51:37,884 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:37,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:37,889 INFO L85 PathProgramCache]: Analyzing trace with hash 674733, now seen corresponding path program 1 times [2024-11-09 10:51:37,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:37,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236750838] [2024-11-09 10:51:37,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:37,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:38,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:38,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:38,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236750838] [2024-11-09 10:51:38,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236750838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:38,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:38,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:51:38,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019520020] [2024-11-09 10:51:38,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:38,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:51:38,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:38,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:51:38,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:51:38,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:51:38,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-11-09 10:51:38,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:38,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:51:38,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:38,323 INFO L124 PetriNetUnfolderBase]: 219/390 cut-off events. [2024-11-09 10:51:38,323 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-09 10:51:38,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 799 conditions, 390 events. 219/390 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 1955 event pairs, 182 based on Foata normal form. 1/240 useless extension candidates. Maximal degree in co-relation 729. Up to 373 conditions per place. [2024-11-09 10:51:38,329 INFO L140 encePairwiseOnDemand]: 37/54 looper letters, 28 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2024-11-09 10:51:38,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 142 flow [2024-11-09 10:51:38,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:51:38,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:51:38,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-09 10:51:38,345 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-11-09 10:51:38,347 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 114 flow. Second operand 3 states and 69 transitions. [2024-11-09 10:51:38,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 142 flow [2024-11-09 10:51:38,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 134 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:51:38,354 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 78 flow [2024-11-09 10:51:38,356 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2024-11-09 10:51:38,359 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, -18 predicate places. [2024-11-09 10:51:38,360 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 78 flow [2024-11-09 10:51:38,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-11-09 10:51:38,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:38,360 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:51:38,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:51:38,361 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:38,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:38,361 INFO L85 PathProgramCache]: Analyzing trace with hash 674734, now seen corresponding path program 1 times [2024-11-09 10:51:38,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:38,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914966820] [2024-11-09 10:51:38,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:38,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:38,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:38,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914966820] [2024-11-09 10:51:38,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914966820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:38,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:38,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:51:38,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688326199] [2024-11-09 10:51:38,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:38,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:51:38,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:38,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:51:38,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:51:38,628 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:51:38,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-09 10:51:38,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:38,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:51:38,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:38,836 INFO L124 PetriNetUnfolderBase]: 220/393 cut-off events. [2024-11-09 10:51:38,836 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 10:51:38,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 393 events. 220/393 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 1945 event pairs, 182 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 761. Up to 382 conditions per place. [2024-11-09 10:51:38,840 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 31 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2024-11-09 10:51:38,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 38 transitions, 154 flow [2024-11-09 10:51:38,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:51:38,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:51:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-11-09 10:51:38,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3148148148148148 [2024-11-09 10:51:38,843 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 78 flow. Second operand 4 states and 68 transitions. [2024-11-09 10:51:38,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 38 transitions, 154 flow [2024-11-09 10:51:38,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 38 transitions, 150 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:51:38,845 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 101 flow [2024-11-09 10:51:38,846 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2024-11-09 10:51:38,847 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, -15 predicate places. [2024-11-09 10:51:38,848 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 101 flow [2024-11-09 10:51:38,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-09 10:51:38,848 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:38,848 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-09 10:51:38,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:51:38,848 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:38,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:38,849 INFO L85 PathProgramCache]: Analyzing trace with hash 20917903, now seen corresponding path program 1 times [2024-11-09 10:51:38,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:38,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479875935] [2024-11-09 10:51:38,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:38,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:39,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:39,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:39,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479875935] [2024-11-09 10:51:39,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479875935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:39,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:39,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:51:39,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251775842] [2024-11-09 10:51:39,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:39,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:51:39,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:39,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:51:39,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:51:39,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:51:39,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2024-11-09 10:51:39,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:39,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:51:39,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:39,369 INFO L124 PetriNetUnfolderBase]: 221/396 cut-off events. [2024-11-09 10:51:39,370 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 10:51:39,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 396 events. 221/396 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 1970 event pairs, 182 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 782. Up to 381 conditions per place. [2024-11-09 10:51:39,372 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 31 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2024-11-09 10:51:39,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 183 flow [2024-11-09 10:51:39,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:51:39,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:51:39,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2024-11-09 10:51:39,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29259259259259257 [2024-11-09 10:51:39,376 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 101 flow. Second operand 5 states and 79 transitions. [2024-11-09 10:51:39,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 183 flow [2024-11-09 10:51:39,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:51:39,378 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 135 flow [2024-11-09 10:51:39,378 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2024-11-09 10:51:39,379 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2024-11-09 10:51:39,379 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 135 flow [2024-11-09 10:51:39,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2024-11-09 10:51:39,380 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:39,380 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-09 10:51:39,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:51:39,381 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:39,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:39,381 INFO L85 PathProgramCache]: Analyzing trace with hash 648440628, now seen corresponding path program 1 times [2024-11-09 10:51:39,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:39,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044129178] [2024-11-09 10:51:39,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:39,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:39,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:39,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:39,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044129178] [2024-11-09 10:51:39,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044129178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:39,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909058993] [2024-11-09 10:51:39,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:39,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:39,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:39,604 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) [2024-11-09 10:51:39,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:51:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:39,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 10:51:39,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:39,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 10:51:39,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:39,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:40,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:40,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909058993] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:40,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:40,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-09 10:51:40,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092094539] [2024-11-09 10:51:40,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:40,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:51:40,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:40,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:51:40,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:51:40,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:51:40,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 135 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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) [2024-11-09 10:51:40,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:40,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:51:40,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:40,366 INFO L124 PetriNetUnfolderBase]: 221/395 cut-off events. [2024-11-09 10:51:40,367 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 10:51:40,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820 conditions, 395 events. 221/395 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 1983 event pairs, 182 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 792. Up to 381 conditions per place. [2024-11-09 10:51:40,370 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 30 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2024-11-09 10:51:40,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 205 flow [2024-11-09 10:51:40,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:51:40,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:51:40,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-11-09 10:51:40,374 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.25617283950617287 [2024-11-09 10:51:40,375 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 135 flow. Second operand 6 states and 83 transitions. [2024-11-09 10:51:40,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 205 flow [2024-11-09 10:51:40,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:51:40,394 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 144 flow [2024-11-09 10:51:40,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-11-09 10:51:40,395 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2024-11-09 10:51:40,396 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 144 flow [2024-11-09 10:51:40,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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) [2024-11-09 10:51:40,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:40,396 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 10:51:40,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 10:51:40,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:40,601 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:40,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:40,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1372709778, now seen corresponding path program 1 times [2024-11-09 10:51:40,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:40,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494637360] [2024-11-09 10:51:40,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:40,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:40,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:40,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494637360] [2024-11-09 10:51:40,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494637360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:40,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244253724] [2024-11-09 10:51:40,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:40,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:40,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:40,790 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) [2024-11-09 10:51:40,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:51:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:40,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 10:51:40,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:40,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-09 10:51:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:41,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:41,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:41,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244253724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:41,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:41,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-09 10:51:41,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715305934] [2024-11-09 10:51:41,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:41,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:51:41,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:41,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:51:41,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:51:41,208 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:51:41,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 144 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 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) [2024-11-09 10:51:41,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:41,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:51:41,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:41,564 INFO L124 PetriNetUnfolderBase]: 223/400 cut-off events. [2024-11-09 10:51:41,564 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 10:51:41,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 846 conditions, 400 events. 223/400 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 1994 event pairs, 182 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 800. Up to 374 conditions per place. [2024-11-09 10:51:41,566 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 24 selfloop transitions, 18 changer transitions 0/45 dead transitions. [2024-11-09 10:51:41,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 257 flow [2024-11-09 10:51:41,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 10:51:41,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 10:51:41,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-11-09 10:51:41,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.23868312757201646 [2024-11-09 10:51:41,568 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 144 flow. Second operand 9 states and 116 transitions. [2024-11-09 10:51:41,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 257 flow [2024-11-09 10:51:41,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 210 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-09 10:51:41,569 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 162 flow [2024-11-09 10:51:41,569 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=162, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2024-11-09 10:51:41,570 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, -8 predicate places. [2024-11-09 10:51:41,570 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 162 flow [2024-11-09 10:51:41,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 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) [2024-11-09 10:51:41,570 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:41,570 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:41,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 10:51:41,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:41,775 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:41,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:41,776 INFO L85 PathProgramCache]: Analyzing trace with hash 398409378, now seen corresponding path program 1 times [2024-11-09 10:51:41,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:41,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852070707] [2024-11-09 10:51:41,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:41,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:41,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:41,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:41,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852070707] [2024-11-09 10:51:41,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852070707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:41,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:41,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:51:41,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345588473] [2024-11-09 10:51:41,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:41,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:51:41,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:41,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:51:41,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:51:41,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-11-09 10:51:41,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2024-11-09 10:51:41,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:41,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-11-09 10:51:41,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:41,919 INFO L124 PetriNetUnfolderBase]: 286/532 cut-off events. [2024-11-09 10:51:41,920 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 10:51:41,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1120 conditions, 532 events. 286/532 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2767 event pairs, 213 based on Foata normal form. 15/372 useless extension candidates. Maximal degree in co-relation 701. Up to 395 conditions per place. [2024-11-09 10:51:41,922 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 61 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2024-11-09 10:51:41,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 70 transitions, 388 flow [2024-11-09 10:51:41,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:51:41,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:51:41,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-11-09 10:51:41,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-11-09 10:51:41,923 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 162 flow. Second operand 5 states and 110 transitions. [2024-11-09 10:51:41,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 70 transitions, 388 flow [2024-11-09 10:51:41,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 70 transitions, 335 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-09 10:51:41,924 INFO L231 Difference]: Finished difference. Result has 47 places, 48 transitions, 173 flow [2024-11-09 10:51:41,925 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=173, PETRI_PLACES=47, PETRI_TRANSITIONS=48} [2024-11-09 10:51:41,925 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2024-11-09 10:51:41,925 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 48 transitions, 173 flow [2024-11-09 10:51:41,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2024-11-09 10:51:41,925 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:41,925 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:41,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:51:41,925 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:41,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:41,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1284778792, now seen corresponding path program 1 times [2024-11-09 10:51:41,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:41,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464778585] [2024-11-09 10:51:41,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:41,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:41,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:51:41,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:41,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464778585] [2024-11-09 10:51:41,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464778585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:41,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:41,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:51:41,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106865659] [2024-11-09 10:51:41,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:41,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:51:41,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:41,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:51:41,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:51:41,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:51:41,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 48 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2024-11-09 10:51:41,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:41,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:51:41,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:42,068 INFO L124 PetriNetUnfolderBase]: 230/435 cut-off events. [2024-11-09 10:51:42,069 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-11-09 10:51:42,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1002 conditions, 435 events. 230/435 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2108 event pairs, 176 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 641. Up to 399 conditions per place. [2024-11-09 10:51:42,074 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 35 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-11-09 10:51:42,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 253 flow [2024-11-09 10:51:42,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:51:42,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:51:42,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2024-11-09 10:51:42,075 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.25925925925925924 [2024-11-09 10:51:42,075 INFO L175 Difference]: Start difference. First operand has 47 places, 48 transitions, 173 flow. Second operand 5 states and 70 transitions. [2024-11-09 10:51:42,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 253 flow [2024-11-09 10:51:42,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 247 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:51:42,076 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 177 flow [2024-11-09 10:51:42,076 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2024-11-09 10:51:42,077 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2024-11-09 10:51:42,077 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 177 flow [2024-11-09 10:51:42,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2024-11-09 10:51:42,077 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:42,077 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:42,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 10:51:42,078 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:42,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:42,078 INFO L85 PathProgramCache]: Analyzing trace with hash 587986893, now seen corresponding path program 1 times [2024-11-09 10:51:42,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:42,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984110353] [2024-11-09 10:51:42,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:42,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:42,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:42,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984110353] [2024-11-09 10:51:42,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984110353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:42,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:42,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:51:42,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53876317] [2024-11-09 10:51:42,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:42,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:51:42,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:42,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:51:42,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:51:42,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:51:42,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2024-11-09 10:51:42,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:42,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:51:42,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:42,252 INFO L124 PetriNetUnfolderBase]: 180/348 cut-off events. [2024-11-09 10:51:42,252 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-11-09 10:51:42,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 348 events. 180/348 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1525 event pairs, 132 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 438. Up to 313 conditions per place. [2024-11-09 10:51:42,258 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 36 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2024-11-09 10:51:42,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 253 flow [2024-11-09 10:51:42,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:51:42,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:51:42,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-11-09 10:51:42,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2777777777777778 [2024-11-09 10:51:42,259 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 177 flow. Second operand 4 states and 60 transitions. [2024-11-09 10:51:42,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 253 flow [2024-11-09 10:51:42,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 241 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:51:42,261 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 169 flow [2024-11-09 10:51:42,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2024-11-09 10:51:42,261 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, -9 predicate places. [2024-11-09 10:51:42,261 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 169 flow [2024-11-09 10:51:42,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2024-11-09 10:51:42,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:42,262 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:42,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 10:51:42,262 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:42,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:42,264 INFO L85 PathProgramCache]: Analyzing trace with hash 587986894, now seen corresponding path program 1 times [2024-11-09 10:51:42,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:42,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106696233] [2024-11-09 10:51:42,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:42,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:42,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:42,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:42,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106696233] [2024-11-09 10:51:42,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106696233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:42,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:42,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:51:42,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409893189] [2024-11-09 10:51:42,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:42,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:51:42,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:42,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:51:42,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:51:42,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-11-09 10:51:42,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 169 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:42,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:42,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-11-09 10:51:42,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:42,451 INFO L124 PetriNetUnfolderBase]: 316/629 cut-off events. [2024-11-09 10:51:42,451 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-11-09 10:51:42,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1420 conditions, 629 events. 316/629 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3160 event pairs, 175 based on Foata normal form. 22/565 useless extension candidates. Maximal degree in co-relation 552. Up to 240 conditions per place. [2024-11-09 10:51:42,454 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 52 selfloop transitions, 10 changer transitions 5/70 dead transitions. [2024-11-09 10:51:42,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 70 transitions, 372 flow [2024-11-09 10:51:42,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:51:42,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:51:42,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-11-09 10:51:42,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-11-09 10:51:42,455 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 169 flow. Second operand 5 states and 112 transitions. [2024-11-09 10:51:42,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 70 transitions, 372 flow [2024-11-09 10:51:42,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 70 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:51:42,456 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 209 flow [2024-11-09 10:51:42,456 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=209, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-11-09 10:51:42,457 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2024-11-09 10:51:42,457 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 209 flow [2024-11-09 10:51:42,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:42,458 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:42,458 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:42,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 10:51:42,458 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:42,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:42,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1284778793, now seen corresponding path program 1 times [2024-11-09 10:51:42,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:42,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981164320] [2024-11-09 10:51:42,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:42,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:42,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:42,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:42,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981164320] [2024-11-09 10:51:42,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981164320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:42,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306936238] [2024-11-09 10:51:42,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:42,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:42,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:42,605 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) [2024-11-09 10:51:42,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 10:51:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:42,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 10:51:42,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:42,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 10:51:42,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 10:51:42,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 10:51:42,736 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 10:51:42,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 10:51:42,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:42,766 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:42,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 57 [2024-11-09 10:51:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:42,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306936238] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:42,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:42,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-09 10:51:42,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689749582] [2024-11-09 10:51:42,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:42,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:51:42,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:42,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:51:42,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:51:42,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:51:42,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 209 flow. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 11 states have internal predecessors, (112), 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) [2024-11-09 10:51:42,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:42,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:51:42,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:43,319 INFO L124 PetriNetUnfolderBase]: 398/776 cut-off events. [2024-11-09 10:51:43,319 INFO L125 PetriNetUnfolderBase]: For 645/645 co-relation queries the response was YES. [2024-11-09 10:51:43,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2062 conditions, 776 events. 398/776 cut-off events. For 645/645 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3891 event pairs, 178 based on Foata normal form. 38/745 useless extension candidates. Maximal degree in co-relation 1256. Up to 256 conditions per place. [2024-11-09 10:51:43,323 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 73 selfloop transitions, 17 changer transitions 2/95 dead transitions. [2024-11-09 10:51:43,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 95 transitions, 576 flow [2024-11-09 10:51:43,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 10:51:43,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 10:51:43,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-11-09 10:51:43,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3230452674897119 [2024-11-09 10:51:43,325 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 209 flow. Second operand 9 states and 157 transitions. [2024-11-09 10:51:43,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 95 transitions, 576 flow [2024-11-09 10:51:43,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 95 transitions, 572 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:51:43,327 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 301 flow [2024-11-09 10:51:43,327 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=301, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-11-09 10:51:43,328 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2024-11-09 10:51:43,328 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 301 flow [2024-11-09 10:51:43,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 11 states have internal predecessors, (112), 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) [2024-11-09 10:51:43,328 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:43,328 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:43,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 10:51:43,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:43,529 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:43,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:43,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1139924309, now seen corresponding path program 1 times [2024-11-09 10:51:43,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:43,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395257617] [2024-11-09 10:51:43,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:43,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:43,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:51:43,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:43,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395257617] [2024-11-09 10:51:43,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395257617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:43,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:43,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:51:43,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107312109] [2024-11-09 10:51:43,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:43,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:51:43,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:43,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:51:43,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:51:43,607 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-11-09 10:51:43,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 301 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-11-09 10:51:43,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:43,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-11-09 10:51:43,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:43,765 INFO L124 PetriNetUnfolderBase]: 346/672 cut-off events. [2024-11-09 10:51:43,769 INFO L125 PetriNetUnfolderBase]: For 1482/1482 co-relation queries the response was YES. [2024-11-09 10:51:43,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2042 conditions, 672 events. 346/672 cut-off events. For 1482/1482 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3227 event pairs, 267 based on Foata normal form. 4/635 useless extension candidates. Maximal degree in co-relation 1802. Up to 552 conditions per place. [2024-11-09 10:51:43,773 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 56 selfloop transitions, 4 changer transitions 2/65 dead transitions. [2024-11-09 10:51:43,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 65 transitions, 463 flow [2024-11-09 10:51:43,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:51:43,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:51:43,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2024-11-09 10:51:43,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-11-09 10:51:43,775 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 301 flow. Second operand 5 states and 97 transitions. [2024-11-09 10:51:43,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 65 transitions, 463 flow [2024-11-09 10:51:43,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 65 transitions, 441 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-09 10:51:43,778 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 280 flow [2024-11-09 10:51:43,778 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2024-11-09 10:51:43,780 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2024-11-09 10:51:43,780 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 280 flow [2024-11-09 10:51:43,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-11-09 10:51:43,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:43,780 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:43,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 10:51:43,781 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:43,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:43,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1139924303, now seen corresponding path program 1 times [2024-11-09 10:51:43,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:43,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182905892] [2024-11-09 10:51:43,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:43,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:43,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:43,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:43,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182905892] [2024-11-09 10:51:43,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182905892] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:43,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320241354] [2024-11-09 10:51:43,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:43,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:43,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:43,975 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) [2024-11-09 10:51:43,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 10:51:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:44,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 10:51:44,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:44,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:44,184 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:44,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-09 10:51:44,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:44,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320241354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:44,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:44,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 10:51:44,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983397014] [2024-11-09 10:51:44,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:44,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:51:44,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:44,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:51:44,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:51:44,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-11-09 10:51:44,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 280 flow. Second operand has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 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) [2024-11-09 10:51:44,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:44,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-11-09 10:51:44,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:44,827 INFO L124 PetriNetUnfolderBase]: 368/727 cut-off events. [2024-11-09 10:51:44,827 INFO L125 PetriNetUnfolderBase]: For 1643/1643 co-relation queries the response was YES. [2024-11-09 10:51:44,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2298 conditions, 727 events. 368/727 cut-off events. For 1643/1643 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3470 event pairs, 71 based on Foata normal form. 31/748 useless extension candidates. Maximal degree in co-relation 2128. Up to 208 conditions per place. [2024-11-09 10:51:44,831 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 63 selfloop transitions, 16 changer transitions 5/87 dead transitions. [2024-11-09 10:51:44,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 87 transitions, 629 flow [2024-11-09 10:51:44,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:51:44,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:51:44,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-11-09 10:51:44,833 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37566137566137564 [2024-11-09 10:51:44,833 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 280 flow. Second operand 7 states and 142 transitions. [2024-11-09 10:51:44,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 87 transitions, 629 flow [2024-11-09 10:51:44,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 87 transitions, 622 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:51:44,836 INFO L231 Difference]: Finished difference. Result has 67 places, 51 transitions, 369 flow [2024-11-09 10:51:44,836 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=369, PETRI_PLACES=67, PETRI_TRANSITIONS=51} [2024-11-09 10:51:44,837 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2024-11-09 10:51:44,837 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 51 transitions, 369 flow [2024-11-09 10:51:44,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 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) [2024-11-09 10:51:44,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:44,838 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:44,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 10:51:45,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:45,039 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:45,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:45,039 INFO L85 PathProgramCache]: Analyzing trace with hash -612469904, now seen corresponding path program 1 times [2024-11-09 10:51:45,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:45,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826397000] [2024-11-09 10:51:45,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:45,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:45,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:51:45,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:45,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826397000] [2024-11-09 10:51:45,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826397000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:45,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030716714] [2024-11-09 10:51:45,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:45,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:45,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:45,287 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) [2024-11-09 10:51:45,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 10:51:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:45,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 10:51:45,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:45,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:51:45,427 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:51:45,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030716714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:45,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 10:51:45,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-09 10:51:45,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636811721] [2024-11-09 10:51:45,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:45,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:51:45,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:45,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:51:45,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 10:51:45,445 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-11-09 10:51:45,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 369 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 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) [2024-11-09 10:51:45,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:45,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-11-09 10:51:45,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:45,544 INFO L124 PetriNetUnfolderBase]: 247/488 cut-off events. [2024-11-09 10:51:45,544 INFO L125 PetriNetUnfolderBase]: For 2389/2389 co-relation queries the response was YES. [2024-11-09 10:51:45,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1698 conditions, 488 events. 247/488 cut-off events. For 2389/2389 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2178 event pairs, 190 based on Foata normal form. 59/536 useless extension candidates. Maximal degree in co-relation 1612. Up to 432 conditions per place. [2024-11-09 10:51:45,547 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 39 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-11-09 10:51:45,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 46 transitions, 399 flow [2024-11-09 10:51:45,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:51:45,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:51:45,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-11-09 10:51:45,548 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-11-09 10:51:45,549 INFO L175 Difference]: Start difference. First operand has 67 places, 51 transitions, 369 flow. Second operand 4 states and 66 transitions. [2024-11-09 10:51:45,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 46 transitions, 399 flow [2024-11-09 10:51:45,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 46 transitions, 349 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-11-09 10:51:45,551 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 271 flow [2024-11-09 10:51:45,552 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-11-09 10:51:45,552 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-11-09 10:51:45,552 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 271 flow [2024-11-09 10:51:45,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 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) [2024-11-09 10:51:45,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:45,553 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:45,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 10:51:45,753 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,SelfDestructingSolverStorable12 [2024-11-09 10:51:45,754 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:45,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:45,755 INFO L85 PathProgramCache]: Analyzing trace with hash -204400933, now seen corresponding path program 1 times [2024-11-09 10:51:45,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:45,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363784120] [2024-11-09 10:51:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:45,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:45,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:51:45,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:45,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363784120] [2024-11-09 10:51:45,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363784120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:45,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801642240] [2024-11-09 10:51:45,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:45,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:45,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:45,950 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) [2024-11-09 10:51:45,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 10:51:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:46,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 10:51:46,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:46,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 10:51:46,107 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 10:51:46,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2024-11-09 10:51:46,120 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 10:51:46,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 10:51:46,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:51:46,189 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:51:46,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801642240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:46,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 10:51:46,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2024-11-09 10:51:46,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580499922] [2024-11-09 10:51:46,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:46,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:51:46,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:46,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:51:46,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-09 10:51:46,209 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:51:46,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 271 flow. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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) [2024-11-09 10:51:46,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:46,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:51:46,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:46,304 INFO L124 PetriNetUnfolderBase]: 167/343 cut-off events. [2024-11-09 10:51:46,305 INFO L125 PetriNetUnfolderBase]: For 973/973 co-relation queries the response was YES. [2024-11-09 10:51:46,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1007 conditions, 343 events. 167/343 cut-off events. For 973/973 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1332 event pairs, 122 based on Foata normal form. 44/381 useless extension candidates. Maximal degree in co-relation 928. Up to 291 conditions per place. [2024-11-09 10:51:46,306 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 33 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2024-11-09 10:51:46,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 41 transitions, 298 flow [2024-11-09 10:51:46,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:51:46,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:51:46,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-11-09 10:51:46,307 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.23703703703703705 [2024-11-09 10:51:46,307 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 271 flow. Second operand 5 states and 64 transitions. [2024-11-09 10:51:46,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 41 transitions, 298 flow [2024-11-09 10:51:46,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 41 transitions, 265 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-09 10:51:46,309 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 199 flow [2024-11-09 10:51:46,309 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=199, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2024-11-09 10:51:46,309 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2024-11-09 10:51:46,309 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 199 flow [2024-11-09 10:51:46,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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) [2024-11-09 10:51:46,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:46,310 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:46,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 10:51:46,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:46,510 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:46,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:46,511 INFO L85 PathProgramCache]: Analyzing trace with hash -868874819, now seen corresponding path program 1 times [2024-11-09 10:51:46,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:46,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721107970] [2024-11-09 10:51:46,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:46,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:46,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:51:46,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:46,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721107970] [2024-11-09 10:51:46,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721107970] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:46,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321143209] [2024-11-09 10:51:46,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:46,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:46,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:46,600 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:51:46,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 10:51:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:46,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 10:51:46,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:46,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:51:46,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:46,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:51:46,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321143209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:46,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:46,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2024-11-09 10:51:46,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513162113] [2024-11-09 10:51:46,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:46,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 10:51:46,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:46,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 10:51:46,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-09 10:51:46,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:51:46,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 199 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:46,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:46,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:51:46,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:47,030 INFO L124 PetriNetUnfolderBase]: 392/690 cut-off events. [2024-11-09 10:51:47,030 INFO L125 PetriNetUnfolderBase]: For 320/320 co-relation queries the response was YES. [2024-11-09 10:51:47,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1807 conditions, 690 events. 392/690 cut-off events. For 320/320 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2856 event pairs, 23 based on Foata normal form. 0/587 useless extension candidates. Maximal degree in co-relation 1731. Up to 133 conditions per place. [2024-11-09 10:51:47,033 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 96 selfloop transitions, 28 changer transitions 0/125 dead transitions. [2024-11-09 10:51:47,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 125 transitions, 757 flow [2024-11-09 10:51:47,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 10:51:47,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 10:51:47,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 213 transitions. [2024-11-09 10:51:47,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28174603174603174 [2024-11-09 10:51:47,034 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 199 flow. Second operand 14 states and 213 transitions. [2024-11-09 10:51:47,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 125 transitions, 757 flow [2024-11-09 10:51:47,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 125 transitions, 749 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:51:47,037 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 359 flow [2024-11-09 10:51:47,037 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=359, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2024-11-09 10:51:47,037 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-11-09 10:51:47,037 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 359 flow [2024-11-09 10:51:47,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:47,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:47,038 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:47,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 10:51:47,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:47,241 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:47,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:47,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1257283555, now seen corresponding path program 2 times [2024-11-09 10:51:47,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:47,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030914803] [2024-11-09 10:51:47,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:47,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:47,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:51:47,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:47,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030914803] [2024-11-09 10:51:47,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030914803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:47,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:47,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:51:47,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792477385] [2024-11-09 10:51:47,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:47,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:51:47,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:47,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:51:47,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:51:47,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-09 10:51:47,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 359 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2024-11-09 10:51:47,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:47,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-09 10:51:47,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:47,442 INFO L124 PetriNetUnfolderBase]: 384/703 cut-off events. [2024-11-09 10:51:47,443 INFO L125 PetriNetUnfolderBase]: For 1198/1210 co-relation queries the response was YES. [2024-11-09 10:51:47,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2543 conditions, 703 events. 384/703 cut-off events. For 1198/1210 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3135 event pairs, 105 based on Foata normal form. 4/692 useless extension candidates. Maximal degree in co-relation 2463. Up to 397 conditions per place. [2024-11-09 10:51:47,449 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 81 selfloop transitions, 14 changer transitions 4/108 dead transitions. [2024-11-09 10:51:47,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 108 transitions, 760 flow [2024-11-09 10:51:47,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:51:47,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:51:47,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-11-09 10:51:47,450 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-11-09 10:51:47,450 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 359 flow. Second operand 5 states and 90 transitions. [2024-11-09 10:51:47,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 108 transitions, 760 flow [2024-11-09 10:51:47,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 108 transitions, 760 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:51:47,456 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 452 flow [2024-11-09 10:51:47,456 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-11-09 10:51:47,456 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-11-09 10:51:47,456 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 452 flow [2024-11-09 10:51:47,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2024-11-09 10:51:47,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:47,457 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:47,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 10:51:47,457 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:47,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:47,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1546814490, now seen corresponding path program 1 times [2024-11-09 10:51:47,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:47,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152685770] [2024-11-09 10:51:47,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:47,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:47,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:51:47,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:47,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152685770] [2024-11-09 10:51:47,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152685770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:47,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:47,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:51:47,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134591996] [2024-11-09 10:51:47,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:47,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:51:47,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:47,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:51:47,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:51:47,524 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-09 10:51:47,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 452 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2024-11-09 10:51:47,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:47,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-09 10:51:47,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:47,687 INFO L124 PetriNetUnfolderBase]: 366/668 cut-off events. [2024-11-09 10:51:47,687 INFO L125 PetriNetUnfolderBase]: For 1503/1505 co-relation queries the response was YES. [2024-11-09 10:51:47,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2641 conditions, 668 events. 366/668 cut-off events. For 1503/1505 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2929 event pairs, 113 based on Foata normal form. 3/663 useless extension candidates. Maximal degree in co-relation 2557. Up to 410 conditions per place. [2024-11-09 10:51:47,693 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 83 selfloop transitions, 7 changer transitions 7/101 dead transitions. [2024-11-09 10:51:47,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 101 transitions, 801 flow [2024-11-09 10:51:47,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:51:47,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:51:47,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-11-09 10:51:47,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-11-09 10:51:47,695 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 452 flow. Second operand 5 states and 94 transitions. [2024-11-09 10:51:47,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 101 transitions, 801 flow [2024-11-09 10:51:47,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 101 transitions, 770 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-09 10:51:47,700 INFO L231 Difference]: Finished difference. Result has 78 places, 75 transitions, 453 flow [2024-11-09 10:51:47,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=453, PETRI_PLACES=78, PETRI_TRANSITIONS=75} [2024-11-09 10:51:47,701 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2024-11-09 10:51:47,701 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 75 transitions, 453 flow [2024-11-09 10:51:47,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2024-11-09 10:51:47,702 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:47,702 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:47,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 10:51:47,702 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:47,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:47,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1985054877, now seen corresponding path program 3 times [2024-11-09 10:51:47,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:47,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339451831] [2024-11-09 10:51:47,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:47,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:47,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:51:47,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:47,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339451831] [2024-11-09 10:51:47,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339451831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:47,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:47,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:51:47,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199752322] [2024-11-09 10:51:47,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:47,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:51:47,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:47,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:51:47,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:51:47,777 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:51:47,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 453 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-11-09 10:51:47,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:47,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:51:47,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:47,959 INFO L124 PetriNetUnfolderBase]: 479/837 cut-off events. [2024-11-09 10:51:47,960 INFO L125 PetriNetUnfolderBase]: For 2105/2105 co-relation queries the response was YES. [2024-11-09 10:51:47,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3297 conditions, 837 events. 479/837 cut-off events. For 2105/2105 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3553 event pairs, 138 based on Foata normal form. 17/852 useless extension candidates. Maximal degree in co-relation 3212. Up to 509 conditions per place. [2024-11-09 10:51:47,967 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 92 selfloop transitions, 32 changer transitions 0/125 dead transitions. [2024-11-09 10:51:47,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 125 transitions, 1012 flow [2024-11-09 10:51:47,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:51:47,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:51:47,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-11-09 10:51:47,968 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3271604938271605 [2024-11-09 10:51:47,968 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 453 flow. Second operand 6 states and 106 transitions. [2024-11-09 10:51:47,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 125 transitions, 1012 flow [2024-11-09 10:51:47,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 125 transitions, 975 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-09 10:51:47,975 INFO L231 Difference]: Finished difference. Result has 83 places, 90 transitions, 665 flow [2024-11-09 10:51:47,975 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=665, PETRI_PLACES=83, PETRI_TRANSITIONS=90} [2024-11-09 10:51:47,976 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2024-11-09 10:51:47,976 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 90 transitions, 665 flow [2024-11-09 10:51:47,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-11-09 10:51:47,976 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:47,977 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:47,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 10:51:47,977 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:47,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:47,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1273730013, now seen corresponding path program 4 times [2024-11-09 10:51:47,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:47,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956258780] [2024-11-09 10:51:47,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:47,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:48,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:51:48,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:48,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956258780] [2024-11-09 10:51:48,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956258780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:48,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:48,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:51:48,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033570529] [2024-11-09 10:51:48,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:48,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:51:48,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:48,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:51:48,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:51:48,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-09 10:51:48,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 90 transitions, 665 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2024-11-09 10:51:48,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:48,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-09 10:51:48,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:48,207 INFO L124 PetriNetUnfolderBase]: 416/765 cut-off events. [2024-11-09 10:51:48,207 INFO L125 PetriNetUnfolderBase]: For 2279/2296 co-relation queries the response was YES. [2024-11-09 10:51:48,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3322 conditions, 765 events. 416/765 cut-off events. For 2279/2296 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3534 event pairs, 125 based on Foata normal form. 4/755 useless extension candidates. Maximal degree in co-relation 3234. Up to 521 conditions per place. [2024-11-09 10:51:48,214 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 75 selfloop transitions, 23 changer transitions 1/114 dead transitions. [2024-11-09 10:51:48,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 114 transitions, 1027 flow [2024-11-09 10:51:48,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:51:48,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:51:48,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-11-09 10:51:48,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34074074074074073 [2024-11-09 10:51:48,216 INFO L175 Difference]: Start difference. First operand has 83 places, 90 transitions, 665 flow. Second operand 5 states and 92 transitions. [2024-11-09 10:51:48,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 114 transitions, 1027 flow [2024-11-09 10:51:48,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 114 transitions, 1001 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-09 10:51:48,224 INFO L231 Difference]: Finished difference. Result has 88 places, 96 transitions, 756 flow [2024-11-09 10:51:48,224 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=756, PETRI_PLACES=88, PETRI_TRANSITIONS=96} [2024-11-09 10:51:48,224 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 34 predicate places. [2024-11-09 10:51:48,225 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 96 transitions, 756 flow [2024-11-09 10:51:48,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2024-11-09 10:51:48,225 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:48,225 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:48,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 10:51:48,225 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:48,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:48,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1288380292, now seen corresponding path program 2 times [2024-11-09 10:51:48,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:48,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700230740] [2024-11-09 10:51:48,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:48,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:48,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:51:48,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:48,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700230740] [2024-11-09 10:51:48,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700230740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:48,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:48,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:51:48,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299540072] [2024-11-09 10:51:48,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:48,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:51:48,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:48,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:51:48,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:51:48,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-09 10:51:48,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 96 transitions, 756 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-11-09 10:51:48,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:48,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-09 10:51:48,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:48,644 INFO L124 PetriNetUnfolderBase]: 464/858 cut-off events. [2024-11-09 10:51:48,644 INFO L125 PetriNetUnfolderBase]: For 2701/2708 co-relation queries the response was YES. [2024-11-09 10:51:48,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3883 conditions, 858 events. 464/858 cut-off events. For 2701/2708 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4085 event pairs, 51 based on Foata normal form. 8/863 useless extension candidates. Maximal degree in co-relation 3792. Up to 321 conditions per place. [2024-11-09 10:51:48,652 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 100 selfloop transitions, 38 changer transitions 1/144 dead transitions. [2024-11-09 10:51:48,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 144 transitions, 1356 flow [2024-11-09 10:51:48,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:51:48,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:51:48,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-11-09 10:51:48,655 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3253968253968254 [2024-11-09 10:51:48,655 INFO L175 Difference]: Start difference. First operand has 88 places, 96 transitions, 756 flow. Second operand 7 states and 123 transitions. [2024-11-09 10:51:48,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 144 transitions, 1356 flow [2024-11-09 10:51:48,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 144 transitions, 1320 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-09 10:51:48,666 INFO L231 Difference]: Finished difference. Result has 97 places, 105 transitions, 941 flow [2024-11-09 10:51:48,666 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=941, PETRI_PLACES=97, PETRI_TRANSITIONS=105} [2024-11-09 10:51:48,666 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 43 predicate places. [2024-11-09 10:51:48,666 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 105 transitions, 941 flow [2024-11-09 10:51:48,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-11-09 10:51:48,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:48,667 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:48,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 10:51:48,668 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:48,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:48,668 INFO L85 PathProgramCache]: Analyzing trace with hash -2051575363, now seen corresponding path program 5 times [2024-11-09 10:51:48,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:48,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627634158] [2024-11-09 10:51:48,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:48,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:48,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:51:48,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:48,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627634158] [2024-11-09 10:51:48,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627634158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:48,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:48,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:51:48,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178243451] [2024-11-09 10:51:48,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:48,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:51:48,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:48,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:51:48,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:51:48,788 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:51:48,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 105 transitions, 941 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2024-11-09 10:51:48,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:48,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:51:48,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:48,948 INFO L124 PetriNetUnfolderBase]: 539/945 cut-off events. [2024-11-09 10:51:48,949 INFO L125 PetriNetUnfolderBase]: For 3963/3963 co-relation queries the response was YES. [2024-11-09 10:51:48,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4515 conditions, 945 events. 539/945 cut-off events. For 3963/3963 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4259 event pairs, 168 based on Foata normal form. 8/951 useless extension candidates. Maximal degree in co-relation 4420. Up to 621 conditions per place. [2024-11-09 10:51:48,957 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 91 selfloop transitions, 28 changer transitions 1/121 dead transitions. [2024-11-09 10:51:48,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 121 transitions, 1276 flow [2024-11-09 10:51:48,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:51:48,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:51:48,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-11-09 10:51:48,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34074074074074073 [2024-11-09 10:51:48,961 INFO L175 Difference]: Start difference. First operand has 97 places, 105 transitions, 941 flow. Second operand 5 states and 92 transitions. [2024-11-09 10:51:48,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 121 transitions, 1276 flow [2024-11-09 10:51:48,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 121 transitions, 1240 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-09 10:51:48,975 INFO L231 Difference]: Finished difference. Result has 100 places, 104 transitions, 956 flow [2024-11-09 10:51:48,975 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=956, PETRI_PLACES=100, PETRI_TRANSITIONS=104} [2024-11-09 10:51:48,976 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 46 predicate places. [2024-11-09 10:51:48,976 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 104 transitions, 956 flow [2024-11-09 10:51:48,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2024-11-09 10:51:48,976 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:48,976 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:48,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 10:51:48,977 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:48,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:48,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1743040376, now seen corresponding path program 3 times [2024-11-09 10:51:48,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:48,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768569790] [2024-11-09 10:51:48,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:48,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:49,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:51:49,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:49,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768569790] [2024-11-09 10:51:49,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768569790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:49,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:49,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:51:49,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556962958] [2024-11-09 10:51:49,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:49,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:51:49,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:49,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:51:49,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:51:49,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:51:49,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 104 transitions, 956 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-11-09 10:51:49,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:49,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:51:49,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:49,322 INFO L124 PetriNetUnfolderBase]: 550/962 cut-off events. [2024-11-09 10:51:49,323 INFO L125 PetriNetUnfolderBase]: For 4319/4319 co-relation queries the response was YES. [2024-11-09 10:51:49,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4640 conditions, 962 events. 550/962 cut-off events. For 4319/4319 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4345 event pairs, 161 based on Foata normal form. 8/968 useless extension candidates. Maximal degree in co-relation 4545. Up to 621 conditions per place. [2024-11-09 10:51:49,334 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 98 selfloop transitions, 30 changer transitions 0/129 dead transitions. [2024-11-09 10:51:49,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 129 transitions, 1359 flow [2024-11-09 10:51:49,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:51:49,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:51:49,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-11-09 10:51:49,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32407407407407407 [2024-11-09 10:51:49,336 INFO L175 Difference]: Start difference. First operand has 100 places, 104 transitions, 956 flow. Second operand 6 states and 105 transitions. [2024-11-09 10:51:49,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 129 transitions, 1359 flow [2024-11-09 10:51:49,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 129 transitions, 1299 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-09 10:51:49,350 INFO L231 Difference]: Finished difference. Result has 101 places, 106 transitions, 990 flow [2024-11-09 10:51:49,350 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=990, PETRI_PLACES=101, PETRI_TRANSITIONS=106} [2024-11-09 10:51:49,350 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 47 predicate places. [2024-11-09 10:51:49,351 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 106 transitions, 990 flow [2024-11-09 10:51:49,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-11-09 10:51:49,351 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:49,351 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:49,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-09 10:51:49,351 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:49,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:49,352 INFO L85 PathProgramCache]: Analyzing trace with hash -810794975, now seen corresponding path program 6 times [2024-11-09 10:51:49,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:49,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023981128] [2024-11-09 10:51:49,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:49,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:49,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:51:49,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:49,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023981128] [2024-11-09 10:51:49,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023981128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:49,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:49,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:51:49,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011025453] [2024-11-09 10:51:49,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:49,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:51:49,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:49,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:51:49,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:51:49,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:51:49,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 106 transitions, 990 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-11-09 10:51:49,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:49,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:51:49,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:49,667 INFO L124 PetriNetUnfolderBase]: 619/1085 cut-off events. [2024-11-09 10:51:49,667 INFO L125 PetriNetUnfolderBase]: For 4719/4719 co-relation queries the response was YES. [2024-11-09 10:51:49,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5219 conditions, 1085 events. 619/1085 cut-off events. For 4719/4719 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5097 event pairs, 152 based on Foata normal form. 9/1092 useless extension candidates. Maximal degree in co-relation 5124. Up to 612 conditions per place. [2024-11-09 10:51:49,693 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 102 selfloop transitions, 32 changer transitions 1/136 dead transitions. [2024-11-09 10:51:49,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 136 transitions, 1454 flow [2024-11-09 10:51:49,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:51:49,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:51:49,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-11-09 10:51:49,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33024691358024694 [2024-11-09 10:51:49,695 INFO L175 Difference]: Start difference. First operand has 101 places, 106 transitions, 990 flow. Second operand 6 states and 107 transitions. [2024-11-09 10:51:49,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 136 transitions, 1454 flow [2024-11-09 10:51:49,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 136 transitions, 1400 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-09 10:51:49,721 INFO L231 Difference]: Finished difference. Result has 104 places, 109 transitions, 1039 flow [2024-11-09 10:51:49,721 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1039, PETRI_PLACES=104, PETRI_TRANSITIONS=109} [2024-11-09 10:51:49,721 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 50 predicate places. [2024-11-09 10:51:49,725 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 109 transitions, 1039 flow [2024-11-09 10:51:49,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-11-09 10:51:49,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:49,725 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:49,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-09 10:51:49,726 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:49,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:49,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1803169240, now seen corresponding path program 4 times [2024-11-09 10:51:49,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:49,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407371067] [2024-11-09 10:51:49,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:49,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:51:49,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:49,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407371067] [2024-11-09 10:51:49,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407371067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:49,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:49,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:51:49,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900690133] [2024-11-09 10:51:49,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:49,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:51:49,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:49,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:51:49,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:51:49,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-09 10:51:49,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 109 transitions, 1039 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2024-11-09 10:51:49,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:49,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-09 10:51:49,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:50,050 INFO L124 PetriNetUnfolderBase]: 509/944 cut-off events. [2024-11-09 10:51:50,050 INFO L125 PetriNetUnfolderBase]: For 4341/4341 co-relation queries the response was YES. [2024-11-09 10:51:50,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4593 conditions, 944 events. 509/944 cut-off events. For 4341/4341 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4710 event pairs, 130 based on Foata normal form. 3/934 useless extension candidates. Maximal degree in co-relation 4497. Up to 609 conditions per place. [2024-11-09 10:51:50,058 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 89 selfloop transitions, 24 changer transitions 3/124 dead transitions. [2024-11-09 10:51:50,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 124 transitions, 1354 flow [2024-11-09 10:51:50,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:51:50,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:51:50,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-11-09 10:51:50,060 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3296296296296296 [2024-11-09 10:51:50,060 INFO L175 Difference]: Start difference. First operand has 104 places, 109 transitions, 1039 flow. Second operand 5 states and 89 transitions. [2024-11-09 10:51:50,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 124 transitions, 1354 flow [2024-11-09 10:51:50,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 124 transitions, 1274 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-09 10:51:50,071 INFO L231 Difference]: Finished difference. Result has 101 places, 108 transitions, 999 flow [2024-11-09 10:51:50,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=999, PETRI_PLACES=101, PETRI_TRANSITIONS=108} [2024-11-09 10:51:50,072 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 47 predicate places. [2024-11-09 10:51:50,072 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 108 transitions, 999 flow [2024-11-09 10:51:50,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2024-11-09 10:51:50,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:50,072 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:50,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-09 10:51:50,073 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:50,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:50,073 INFO L85 PathProgramCache]: Analyzing trace with hash -358908955, now seen corresponding path program 7 times [2024-11-09 10:51:50,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:50,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769310600] [2024-11-09 10:51:50,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:50,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:51:50,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:50,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769310600] [2024-11-09 10:51:50,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769310600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:50,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:50,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:51:50,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318017553] [2024-11-09 10:51:50,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:50,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:51:50,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:50,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:51:50,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:51:50,140 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-09 10:51:50,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 108 transitions, 999 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2024-11-09 10:51:50,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:50,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-09 10:51:50,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:50,318 INFO L124 PetriNetUnfolderBase]: 533/964 cut-off events. [2024-11-09 10:51:50,318 INFO L125 PetriNetUnfolderBase]: For 4624/4638 co-relation queries the response was YES. [2024-11-09 10:51:50,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4635 conditions, 964 events. 533/964 cut-off events. For 4624/4638 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4680 event pairs, 129 based on Foata normal form. 6/951 useless extension candidates. Maximal degree in co-relation 4542. Up to 536 conditions per place. [2024-11-09 10:51:50,327 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 79 selfloop transitions, 27 changer transitions 3/127 dead transitions. [2024-11-09 10:51:50,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 127 transitions, 1342 flow [2024-11-09 10:51:50,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:51:50,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:51:50,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-11-09 10:51:50,328 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32592592592592595 [2024-11-09 10:51:50,328 INFO L175 Difference]: Start difference. First operand has 101 places, 108 transitions, 999 flow. Second operand 5 states and 88 transitions. [2024-11-09 10:51:50,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 127 transitions, 1342 flow [2024-11-09 10:51:50,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 127 transitions, 1290 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-09 10:51:50,339 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 998 flow [2024-11-09 10:51:50,339 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=998, PETRI_PLACES=101, PETRI_TRANSITIONS=107} [2024-11-09 10:51:50,339 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 47 predicate places. [2024-11-09 10:51:50,339 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 998 flow [2024-11-09 10:51:50,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2024-11-09 10:51:50,340 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:50,340 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:50,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-09 10:51:50,340 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:50,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:50,341 INFO L85 PathProgramCache]: Analyzing trace with hash 568780474, now seen corresponding path program 5 times [2024-11-09 10:51:50,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:50,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572666689] [2024-11-09 10:51:50,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:50,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:50,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:51:50,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:50,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572666689] [2024-11-09 10:51:50,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572666689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:50,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:50,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:51:50,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006028410] [2024-11-09 10:51:50,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:50,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:51:50,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:50,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:51:50,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:51:50,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:51:50,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 107 transitions, 998 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-11-09 10:51:50,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:50,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:51:50,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:50,661 INFO L124 PetriNetUnfolderBase]: 667/1157 cut-off events. [2024-11-09 10:51:50,661 INFO L125 PetriNetUnfolderBase]: For 5236/5236 co-relation queries the response was YES. [2024-11-09 10:51:50,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5540 conditions, 1157 events. 667/1157 cut-off events. For 5236/5236 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5456 event pairs, 157 based on Foata normal form. 8/1163 useless extension candidates. Maximal degree in co-relation 5447. Up to 591 conditions per place. [2024-11-09 10:51:50,670 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 105 selfloop transitions, 34 changer transitions 1/141 dead transitions. [2024-11-09 10:51:50,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 141 transitions, 1520 flow [2024-11-09 10:51:50,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:51:50,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:51:50,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-11-09 10:51:50,672 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32098765432098764 [2024-11-09 10:51:50,672 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 998 flow. Second operand 6 states and 104 transitions. [2024-11-09 10:51:50,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 141 transitions, 1520 flow [2024-11-09 10:51:50,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 141 transitions, 1458 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-09 10:51:50,685 INFO L231 Difference]: Finished difference. Result has 102 places, 110 transitions, 1053 flow [2024-11-09 10:51:50,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1053, PETRI_PLACES=102, PETRI_TRANSITIONS=110} [2024-11-09 10:51:50,686 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2024-11-09 10:51:50,686 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 110 transitions, 1053 flow [2024-11-09 10:51:50,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-11-09 10:51:50,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:50,687 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:50,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-09 10:51:50,687 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:50,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:50,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1489818104, now seen corresponding path program 6 times [2024-11-09 10:51:50,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:50,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168566957] [2024-11-09 10:51:50,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:50,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:50,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:51:50,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:50,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168566957] [2024-11-09 10:51:50,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168566957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:50,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:50,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:51:50,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159632454] [2024-11-09 10:51:50,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:50,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:51:50,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:50,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:51:50,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:51:50,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-09 10:51:50,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 110 transitions, 1053 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2024-11-09 10:51:50,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:50,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-09 10:51:50,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:50,942 INFO L124 PetriNetUnfolderBase]: 546/985 cut-off events. [2024-11-09 10:51:50,942 INFO L125 PetriNetUnfolderBase]: For 4887/4887 co-relation queries the response was YES. [2024-11-09 10:51:50,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4820 conditions, 985 events. 546/985 cut-off events. For 4887/4887 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4800 event pairs, 146 based on Foata normal form. 3/985 useless extension candidates. Maximal degree in co-relation 4726. Up to 578 conditions per place. [2024-11-09 10:51:50,951 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 88 selfloop transitions, 26 changer transitions 3/126 dead transitions. [2024-11-09 10:51:50,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 126 transitions, 1377 flow [2024-11-09 10:51:50,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:51:50,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:51:50,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-11-09 10:51:50,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32222222222222224 [2024-11-09 10:51:50,952 INFO L175 Difference]: Start difference. First operand has 102 places, 110 transitions, 1053 flow. Second operand 5 states and 87 transitions. [2024-11-09 10:51:50,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 126 transitions, 1377 flow [2024-11-09 10:51:50,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 126 transitions, 1284 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-11-09 10:51:50,963 INFO L231 Difference]: Finished difference. Result has 102 places, 109 transitions, 1013 flow [2024-11-09 10:51:50,963 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1013, PETRI_PLACES=102, PETRI_TRANSITIONS=109} [2024-11-09 10:51:50,964 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2024-11-09 10:51:50,964 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 109 transitions, 1013 flow [2024-11-09 10:51:50,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2024-11-09 10:51:50,964 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:50,964 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:50,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-09 10:51:50,965 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:50,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:50,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1804770449, now seen corresponding path program 1 times [2024-11-09 10:51:50,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:50,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135492203] [2024-11-09 10:51:50,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:50,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:51,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:51,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:51,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135492203] [2024-11-09 10:51:51,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135492203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:51,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473912056] [2024-11-09 10:51:51,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:51,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:51,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:51,758 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:51:51,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 10:51:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:51,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 10:51:51,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:52,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:51:52,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:52,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 19 [2024-11-09 10:51:52,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:51:52,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473912056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:52,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:52,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 16 [2024-11-09 10:51:52,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071500974] [2024-11-09 10:51:52,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:52,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 10:51:52,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:52,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 10:51:52,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-11-09 10:51:52,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:51:52,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 109 transitions, 1013 flow. Second operand has 17 states, 17 states have (on average 11.058823529411764) internal successors, (188), 17 states have internal predecessors, (188), 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) [2024-11-09 10:51:52,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:52,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:51:52,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:53,200 INFO L124 PetriNetUnfolderBase]: 1088/2034 cut-off events. [2024-11-09 10:51:53,200 INFO L125 PetriNetUnfolderBase]: For 9804/9882 co-relation queries the response was YES. [2024-11-09 10:51:53,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9325 conditions, 2034 events. 1088/2034 cut-off events. For 9804/9882 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12166 event pairs, 89 based on Foata normal form. 62/2089 useless extension candidates. Maximal degree in co-relation 6821. Up to 732 conditions per place. [2024-11-09 10:51:53,214 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 203 selfloop transitions, 28 changer transitions 16/273 dead transitions. [2024-11-09 10:51:53,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 273 transitions, 3035 flow [2024-11-09 10:51:53,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 10:51:53,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 10:51:53,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 244 transitions. [2024-11-09 10:51:53,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.25102880658436216 [2024-11-09 10:51:53,216 INFO L175 Difference]: Start difference. First operand has 102 places, 109 transitions, 1013 flow. Second operand 18 states and 244 transitions. [2024-11-09 10:51:53,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 273 transitions, 3035 flow [2024-11-09 10:51:53,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 273 transitions, 2875 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-09 10:51:53,232 INFO L231 Difference]: Finished difference. Result has 120 places, 125 transitions, 1164 flow [2024-11-09 10:51:53,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1164, PETRI_PLACES=120, PETRI_TRANSITIONS=125} [2024-11-09 10:51:53,236 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 66 predicate places. [2024-11-09 10:51:53,236 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 125 transitions, 1164 flow [2024-11-09 10:51:53,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.058823529411764) internal successors, (188), 17 states have internal predecessors, (188), 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) [2024-11-09 10:51:53,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:53,237 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:53,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 10:51:53,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-09 10:51:53,437 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:53,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:53,438 INFO L85 PathProgramCache]: Analyzing trace with hash 615734959, now seen corresponding path program 2 times [2024-11-09 10:51:53,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:53,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785696173] [2024-11-09 10:51:53,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:53,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:51:53,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:53,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785696173] [2024-11-09 10:51:53,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785696173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:53,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931848528] [2024-11-09 10:51:53,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:51:53,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:53,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:53,569 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:51:53,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 10:51:53,656 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:51:53,656 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:51:53,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 10:51:53,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:53,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:51:53,760 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:53,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 19 [2024-11-09 10:51:53,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:51:53,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931848528] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:53,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:53,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2024-11-09 10:51:53,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062606593] [2024-11-09 10:51:53,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:53,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:51:53,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:53,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:51:53,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:51:53,986 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-11-09 10:51:53,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 125 transitions, 1164 flow. Second operand has 13 states, 13 states have (on average 13.846153846153847) internal successors, (180), 13 states have internal predecessors, (180), 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) [2024-11-09 10:51:53,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:53,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-11-09 10:51:53,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:54,697 INFO L124 PetriNetUnfolderBase]: 2636/4881 cut-off events. [2024-11-09 10:51:54,698 INFO L125 PetriNetUnfolderBase]: For 23054/23219 co-relation queries the response was YES. [2024-11-09 10:51:54,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22710 conditions, 4881 events. 2636/4881 cut-off events. For 23054/23219 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 33532 event pairs, 357 based on Foata normal form. 133/4991 useless extension candidates. Maximal degree in co-relation 22654. Up to 1682 conditions per place. [2024-11-09 10:51:54,725 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 231 selfloop transitions, 37 changer transitions 13/307 dead transitions. [2024-11-09 10:51:54,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 307 transitions, 3467 flow [2024-11-09 10:51:54,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 10:51:54,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 10:51:54,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-11-09 10:51:54,726 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.345679012345679 [2024-11-09 10:51:54,726 INFO L175 Difference]: Start difference. First operand has 120 places, 125 transitions, 1164 flow. Second operand 9 states and 168 transitions. [2024-11-09 10:51:54,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 307 transitions, 3467 flow [2024-11-09 10:51:54,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 307 transitions, 3437 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-09 10:51:54,767 INFO L231 Difference]: Finished difference. Result has 128 places, 140 transitions, 1432 flow [2024-11-09 10:51:54,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1432, PETRI_PLACES=128, PETRI_TRANSITIONS=140} [2024-11-09 10:51:54,769 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 74 predicate places. [2024-11-09 10:51:54,769 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 140 transitions, 1432 flow [2024-11-09 10:51:54,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.846153846153847) internal successors, (180), 13 states have internal predecessors, (180), 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) [2024-11-09 10:51:54,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:54,769 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:54,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 10:51:54,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 10:51:54,970 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:51:54,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:54,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1274237479, now seen corresponding path program 3 times [2024-11-09 10:51:54,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:54,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671743645] [2024-11-09 10:51:54,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:54,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:55,169 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 10:51:55,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:55,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671743645] [2024-11-09 10:51:55,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671743645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:55,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100758279] [2024-11-09 10:51:55,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:51:55,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:55,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:55,171 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:51:55,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 10:51:55,258 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 10:51:55,258 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:51:55,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 10:51:55,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:55,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 10:51:55,465 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-09 10:51:55,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 24 [2024-11-09 10:51:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 10:51:55,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:55,677 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 10:51:55,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 341 treesize of output 327 [2024-11-09 10:51:55,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 62 [2024-11-09 10:51:55,872 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 10:51:55,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 455 treesize of output 419 [2024-11-09 10:52:01,906 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 10:52:01,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100758279] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:01,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:01,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2024-11-09 10:52:01,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339648524] [2024-11-09 10:52:01,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:01,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 10:52:01,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:01,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 10:52:01,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-09 10:52:02,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-11-09 10:52:02,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 140 transitions, 1432 flow. Second operand has 17 states, 17 states have (on average 13.411764705882353) internal successors, (228), 17 states have internal predecessors, (228), 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) [2024-11-09 10:52:02,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:02,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-11-09 10:52:02,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:02,844 INFO L124 PetriNetUnfolderBase]: 2744/5148 cut-off events. [2024-11-09 10:52:02,844 INFO L125 PetriNetUnfolderBase]: For 28038/28197 co-relation queries the response was YES. [2024-11-09 10:52:02,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24792 conditions, 5148 events. 2744/5148 cut-off events. For 28038/28197 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 36428 event pairs, 298 based on Foata normal form. 137/5248 useless extension candidates. Maximal degree in co-relation 24724. Up to 2713 conditions per place. [2024-11-09 10:52:02,875 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 202 selfloop transitions, 28 changer transitions 48/304 dead transitions. [2024-11-09 10:52:02,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 304 transitions, 3558 flow [2024-11-09 10:52:02,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:52:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:52:02,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-11-09 10:52:02,876 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33164983164983164 [2024-11-09 10:52:02,876 INFO L175 Difference]: Start difference. First operand has 128 places, 140 transitions, 1432 flow. Second operand 11 states and 197 transitions. [2024-11-09 10:52:02,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 304 transitions, 3558 flow [2024-11-09 10:52:02,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 304 transitions, 3505 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-09 10:52:02,926 INFO L231 Difference]: Finished difference. Result has 138 places, 151 transitions, 1623 flow [2024-11-09 10:52:02,927 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1623, PETRI_PLACES=138, PETRI_TRANSITIONS=151} [2024-11-09 10:52:02,927 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 84 predicate places. [2024-11-09 10:52:02,927 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 151 transitions, 1623 flow [2024-11-09 10:52:02,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.411764705882353) internal successors, (228), 17 states have internal predecessors, (228), 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) [2024-11-09 10:52:02,927 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:02,927 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:02,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 10:52:03,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:03,132 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:52:03,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:03,132 INFO L85 PathProgramCache]: Analyzing trace with hash -130845613, now seen corresponding path program 4 times [2024-11-09 10:52:03,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:03,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133242578] [2024-11-09 10:52:03,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:03,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:03,203 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:03,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:03,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133242578] [2024-11-09 10:52:03,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133242578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:03,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437765928] [2024-11-09 10:52:03,204 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:52:03,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:03,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:03,205 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:52:03,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 10:52:03,281 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:52:03,281 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:03,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:52:03,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:03,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:03,356 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 10:52:03,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437765928] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:03,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:03,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-09 10:52:03,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701417821] [2024-11-09 10:52:03,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:03,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:52:03,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:03,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:52:03,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:52:03,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:52:03,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 151 transitions, 1623 flow. Second operand has 13 states, 13 states have (on average 11.538461538461538) internal successors, (150), 13 states have internal predecessors, (150), 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) [2024-11-09 10:52:03,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:03,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:52:03,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:04,858 INFO L124 PetriNetUnfolderBase]: 5143/8456 cut-off events. [2024-11-09 10:52:04,859 INFO L125 PetriNetUnfolderBase]: For 42915/42915 co-relation queries the response was YES. [2024-11-09 10:52:04,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41115 conditions, 8456 events. 5143/8456 cut-off events. For 42915/42915 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 52903 event pairs, 560 based on Foata normal form. 50/8506 useless extension candidates. Maximal degree in co-relation 41045. Up to 2052 conditions per place. [2024-11-09 10:52:04,937 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 314 selfloop transitions, 59 changer transitions 11/385 dead transitions. [2024-11-09 10:52:04,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 385 transitions, 4937 flow [2024-11-09 10:52:04,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 10:52:04,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 10:52:04,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 232 transitions. [2024-11-09 10:52:04,939 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30687830687830686 [2024-11-09 10:52:04,939 INFO L175 Difference]: Start difference. First operand has 138 places, 151 transitions, 1623 flow. Second operand 14 states and 232 transitions. [2024-11-09 10:52:04,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 385 transitions, 4937 flow [2024-11-09 10:52:05,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 385 transitions, 4763 flow, removed 65 selfloop flow, removed 5 redundant places. [2024-11-09 10:52:05,019 INFO L231 Difference]: Finished difference. Result has 150 places, 180 transitions, 1899 flow [2024-11-09 10:52:05,019 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1899, PETRI_PLACES=150, PETRI_TRANSITIONS=180} [2024-11-09 10:52:05,020 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 96 predicate places. [2024-11-09 10:52:05,020 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 180 transitions, 1899 flow [2024-11-09 10:52:05,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.538461538461538) internal successors, (150), 13 states have internal predecessors, (150), 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) [2024-11-09 10:52:05,020 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:05,020 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:05,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 10:52:05,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-09 10:52:05,221 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:52:05,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:05,222 INFO L85 PathProgramCache]: Analyzing trace with hash -967582325, now seen corresponding path program 5 times [2024-11-09 10:52:05,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:05,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193831897] [2024-11-09 10:52:05,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:05,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:05,304 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:05,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:05,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193831897] [2024-11-09 10:52:05,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193831897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:05,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141624521] [2024-11-09 10:52:05,304 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:52:05,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:05,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:05,306 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:52:05,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 10:52:05,403 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 10:52:05,403 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:05,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:52:05,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:05,459 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:05,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:05,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141624521] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:05,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:05,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 10:52:05,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941630735] [2024-11-09 10:52:05,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:05,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:52:05,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:05,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:52:05,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:52:05,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:52:05,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 180 transitions, 1899 flow. Second operand has 15 states, 15 states have (on average 11.2) internal successors, (168), 15 states have internal predecessors, (168), 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) [2024-11-09 10:52:05,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:05,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:52:05,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:07,427 INFO L124 PetriNetUnfolderBase]: 7032/11443 cut-off events. [2024-11-09 10:52:07,427 INFO L125 PetriNetUnfolderBase]: For 78083/78083 co-relation queries the response was YES. [2024-11-09 10:52:07,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61867 conditions, 11443 events. 7032/11443 cut-off events. For 78083/78083 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 74388 event pairs, 789 based on Foata normal form. 334/11777 useless extension candidates. Maximal degree in co-relation 61793. Up to 3689 conditions per place. [2024-11-09 10:52:07,500 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 420 selfloop transitions, 66 changer transitions 8/495 dead transitions. [2024-11-09 10:52:07,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 495 transitions, 6325 flow [2024-11-09 10:52:07,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 10:52:07,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-09 10:52:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 312 transitions. [2024-11-09 10:52:07,507 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28888888888888886 [2024-11-09 10:52:07,507 INFO L175 Difference]: Start difference. First operand has 150 places, 180 transitions, 1899 flow. Second operand 20 states and 312 transitions. [2024-11-09 10:52:07,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 495 transitions, 6325 flow [2024-11-09 10:52:07,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 495 transitions, 6240 flow, removed 38 selfloop flow, removed 1 redundant places. [2024-11-09 10:52:07,680 INFO L231 Difference]: Finished difference. Result has 182 places, 212 transitions, 2451 flow [2024-11-09 10:52:07,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1844, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2451, PETRI_PLACES=182, PETRI_TRANSITIONS=212} [2024-11-09 10:52:07,681 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 128 predicate places. [2024-11-09 10:52:07,681 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 212 transitions, 2451 flow [2024-11-09 10:52:07,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.2) internal successors, (168), 15 states have internal predecessors, (168), 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) [2024-11-09 10:52:07,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:07,682 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:07,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 10:52:07,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-09 10:52:07,885 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:52:07,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:07,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1832165047, now seen corresponding path program 6 times [2024-11-09 10:52:07,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:07,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903441381] [2024-11-09 10:52:07,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:07,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:08,025 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:08,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:08,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903441381] [2024-11-09 10:52:08,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903441381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:08,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912865440] [2024-11-09 10:52:08,026 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:52:08,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:08,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:08,028 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:52:08,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 10:52:08,132 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-09 10:52:08,132 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:08,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:52:08,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:08,183 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:08,184 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:08,218 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:08,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912865440] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:08,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:08,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 10:52:08,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810725765] [2024-11-09 10:52:08,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:08,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:52:08,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:08,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:52:08,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:52:08,222 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:52:08,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 212 transitions, 2451 flow. Second operand has 15 states, 15 states have (on average 10.933333333333334) internal successors, (164), 15 states have internal predecessors, (164), 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) [2024-11-09 10:52:08,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:08,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:52:08,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:11,175 INFO L124 PetriNetUnfolderBase]: 9515/15476 cut-off events. [2024-11-09 10:52:11,176 INFO L125 PetriNetUnfolderBase]: For 171784/171784 co-relation queries the response was YES. [2024-11-09 10:52:11,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98322 conditions, 15476 events. 9515/15476 cut-off events. For 171784/171784 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 104287 event pairs, 711 based on Foata normal form. 74/15550 useless extension candidates. Maximal degree in co-relation 98234. Up to 4603 conditions per place. [2024-11-09 10:52:11,329 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 388 selfloop transitions, 115 changer transitions 21/525 dead transitions. [2024-11-09 10:52:11,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 525 transitions, 7361 flow [2024-11-09 10:52:11,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 10:52:11,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 10:52:11,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 265 transitions. [2024-11-09 10:52:11,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2886710239651416 [2024-11-09 10:52:11,331 INFO L175 Difference]: Start difference. First operand has 182 places, 212 transitions, 2451 flow. Second operand 17 states and 265 transitions. [2024-11-09 10:52:11,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 525 transitions, 7361 flow [2024-11-09 10:52:12,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 525 transitions, 6801 flow, removed 232 selfloop flow, removed 6 redundant places. [2024-11-09 10:52:12,211 INFO L231 Difference]: Finished difference. Result has 201 places, 268 transitions, 3267 flow [2024-11-09 10:52:12,212 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2151, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3267, PETRI_PLACES=201, PETRI_TRANSITIONS=268} [2024-11-09 10:52:12,212 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 147 predicate places. [2024-11-09 10:52:12,212 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 268 transitions, 3267 flow [2024-11-09 10:52:12,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.933333333333334) internal successors, (164), 15 states have internal predecessors, (164), 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) [2024-11-09 10:52:12,212 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:12,212 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:12,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 10:52:12,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-09 10:52:12,416 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:52:12,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:12,417 INFO L85 PathProgramCache]: Analyzing trace with hash 521798665, now seen corresponding path program 7 times [2024-11-09 10:52:12,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:12,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368116937] [2024-11-09 10:52:12,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:12,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:12,521 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:12,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:12,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368116937] [2024-11-09 10:52:12,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368116937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:12,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647101825] [2024-11-09 10:52:12,523 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:52:12,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:12,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:12,527 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:52:12,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 10:52:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:12,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:52:12,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:12,682 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:12,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:12,717 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:12,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647101825] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:12,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:12,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-09 10:52:12,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731732492] [2024-11-09 10:52:12,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:12,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:52:12,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:12,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:52:12,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:52:12,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:52:12,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 268 transitions, 3267 flow. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 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) [2024-11-09 10:52:12,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:12,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:52:12,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:16,502 INFO L124 PetriNetUnfolderBase]: 10742/17515 cut-off events. [2024-11-09 10:52:16,503 INFO L125 PetriNetUnfolderBase]: For 191862/191862 co-relation queries the response was YES. [2024-11-09 10:52:16,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111484 conditions, 17515 events. 10742/17515 cut-off events. For 191862/191862 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 121624 event pairs, 427 based on Foata normal form. 122/17637 useless extension candidates. Maximal degree in co-relation 111388. Up to 5464 conditions per place. [2024-11-09 10:52:16,765 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 306 selfloop transitions, 184 changer transitions 21/512 dead transitions. [2024-11-09 10:52:16,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 512 transitions, 7014 flow [2024-11-09 10:52:16,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 10:52:16,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 10:52:16,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 229 transitions. [2024-11-09 10:52:16,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28271604938271605 [2024-11-09 10:52:16,768 INFO L175 Difference]: Start difference. First operand has 201 places, 268 transitions, 3267 flow. Second operand 15 states and 229 transitions. [2024-11-09 10:52:16,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 512 transitions, 7014 flow [2024-11-09 10:52:18,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 512 transitions, 6506 flow, removed 216 selfloop flow, removed 3 redundant places. [2024-11-09 10:52:18,372 INFO L231 Difference]: Finished difference. Result has 218 places, 335 transitions, 4234 flow [2024-11-09 10:52:18,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2901, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4234, PETRI_PLACES=218, PETRI_TRANSITIONS=335} [2024-11-09 10:52:18,373 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 164 predicate places. [2024-11-09 10:52:18,373 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 335 transitions, 4234 flow [2024-11-09 10:52:18,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 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) [2024-11-09 10:52:18,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:18,375 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:18,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 10:52:18,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:18,580 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:52:18,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:18,580 INFO L85 PathProgramCache]: Analyzing trace with hash 700469521, now seen corresponding path program 8 times [2024-11-09 10:52:18,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:18,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868091714] [2024-11-09 10:52:18,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:18,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:18,642 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:18,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:18,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868091714] [2024-11-09 10:52:18,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868091714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:18,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131934707] [2024-11-09 10:52:18,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:52:18,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:18,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:18,644 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:52:18,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 10:52:18,734 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:52:18,734 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:18,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:52:18,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:18,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:18,817 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:18,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131934707] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:18,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:18,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 10:52:18,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164394543] [2024-11-09 10:52:18,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:18,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:52:18,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:18,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:52:18,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:52:18,826 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:52:18,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 335 transitions, 4234 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 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) [2024-11-09 10:52:18,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:18,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:52:18,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:23,384 INFO L124 PetriNetUnfolderBase]: 11681/18993 cut-off events. [2024-11-09 10:52:23,385 INFO L125 PetriNetUnfolderBase]: For 244260/244260 co-relation queries the response was YES. [2024-11-09 10:52:23,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127228 conditions, 18993 events. 11681/18993 cut-off events. For 244260/244260 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 133138 event pairs, 408 based on Foata normal form. 293/19286 useless extension candidates. Maximal degree in co-relation 127127. Up to 4622 conditions per place. [2024-11-09 10:52:23,647 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 423 selfloop transitions, 235 changer transitions 16/675 dead transitions. [2024-11-09 10:52:23,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 675 transitions, 9792 flow [2024-11-09 10:52:23,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 10:52:23,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-09 10:52:23,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 393 transitions. [2024-11-09 10:52:23,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2799145299145299 [2024-11-09 10:52:23,651 INFO L175 Difference]: Start difference. First operand has 218 places, 335 transitions, 4234 flow. Second operand 26 states and 393 transitions. [2024-11-09 10:52:23,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 675 transitions, 9792 flow [2024-11-09 10:52:25,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 675 transitions, 9541 flow, removed 109 selfloop flow, removed 1 redundant places. [2024-11-09 10:52:25,566 INFO L231 Difference]: Finished difference. Result has 257 places, 388 transitions, 5720 flow [2024-11-09 10:52:25,566 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4042, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5720, PETRI_PLACES=257, PETRI_TRANSITIONS=388} [2024-11-09 10:52:25,567 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 203 predicate places. [2024-11-09 10:52:25,567 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 388 transitions, 5720 flow [2024-11-09 10:52:25,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 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) [2024-11-09 10:52:25,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:25,568 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:25,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 10:52:25,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:25,772 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:52:25,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:25,773 INFO L85 PathProgramCache]: Analyzing trace with hash 110291833, now seen corresponding path program 9 times [2024-11-09 10:52:25,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:25,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588167437] [2024-11-09 10:52:25,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:25,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:25,851 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:25,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:25,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588167437] [2024-11-09 10:52:25,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588167437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:25,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426872855] [2024-11-09 10:52:25,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:52:25,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:25,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:25,854 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:52:25,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 10:52:25,967 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 10:52:25,967 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:25,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:52:25,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:26,017 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:26,018 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:26,062 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:26,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426872855] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:26,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:26,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 10:52:26,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457259244] [2024-11-09 10:52:26,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:26,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:52:26,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:26,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:52:26,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:52:26,076 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:52:26,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 388 transitions, 5720 flow. Second operand has 13 states, 13 states have (on average 11.76923076923077) internal successors, (153), 13 states have internal predecessors, (153), 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) [2024-11-09 10:52:26,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:26,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:52:26,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:31,133 INFO L124 PetriNetUnfolderBase]: 13138/21417 cut-off events. [2024-11-09 10:52:31,133 INFO L125 PetriNetUnfolderBase]: For 430257/430257 co-relation queries the response was YES. [2024-11-09 10:52:31,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161550 conditions, 21417 events. 13138/21417 cut-off events. For 430257/430257 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 154128 event pairs, 541 based on Foata normal form. 128/21545 useless extension candidates. Maximal degree in co-relation 161434. Up to 7691 conditions per place. [2024-11-09 10:52:31,367 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 345 selfloop transitions, 264 changer transitions 15/625 dead transitions. [2024-11-09 10:52:31,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 625 transitions, 10100 flow [2024-11-09 10:52:31,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 10:52:31,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 10:52:31,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 246 transitions. [2024-11-09 10:52:31,369 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2847222222222222 [2024-11-09 10:52:31,369 INFO L175 Difference]: Start difference. First operand has 257 places, 388 transitions, 5720 flow. Second operand 16 states and 246 transitions. [2024-11-09 10:52:31,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 625 transitions, 10100 flow [2024-11-09 10:52:35,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 625 transitions, 9639 flow, removed 190 selfloop flow, removed 5 redundant places. [2024-11-09 10:52:35,980 INFO L231 Difference]: Finished difference. Result has 273 places, 444 transitions, 7244 flow [2024-11-09 10:52:35,980 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=5387, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=7244, PETRI_PLACES=273, PETRI_TRANSITIONS=444} [2024-11-09 10:52:35,981 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 219 predicate places. [2024-11-09 10:52:35,981 INFO L471 AbstractCegarLoop]: Abstraction has has 273 places, 444 transitions, 7244 flow [2024-11-09 10:52:35,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.76923076923077) internal successors, (153), 13 states have internal predecessors, (153), 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) [2024-11-09 10:52:35,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:35,981 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:35,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 10:52:36,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-09 10:52:36,186 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:52:36,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:36,186 INFO L85 PathProgramCache]: Analyzing trace with hash -91033195, now seen corresponding path program 10 times [2024-11-09 10:52:36,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:36,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790810703] [2024-11-09 10:52:36,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:36,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:36,495 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:36,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:36,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790810703] [2024-11-09 10:52:36,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790810703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:36,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645055385] [2024-11-09 10:52:36,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:52:36,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:36,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:36,503 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:52:36,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 10:52:36,723 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:52:36,724 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:36,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:52:36,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:36,783 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:36,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:36,833 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:36,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645055385] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:36,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:36,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 10:52:36,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722218223] [2024-11-09 10:52:36,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:36,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:52:36,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:36,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:52:36,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:52:36,859 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:52:36,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 444 transitions, 7244 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 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) [2024-11-09 10:52:36,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:36,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:52:36,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:42,806 INFO L124 PetriNetUnfolderBase]: 13160/21491 cut-off events. [2024-11-09 10:52:42,806 INFO L125 PetriNetUnfolderBase]: For 462322/462322 co-relation queries the response was YES. [2024-11-09 10:52:43,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168888 conditions, 21491 events. 13160/21491 cut-off events. For 462322/462322 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 155514 event pairs, 1404 based on Foata normal form. 22/21513 useless extension candidates. Maximal degree in co-relation 168766. Up to 8727 conditions per place. [2024-11-09 10:52:43,315 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 438 selfloop transitions, 182 changer transitions 13/634 dead transitions. [2024-11-09 10:52:43,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 634 transitions, 10941 flow [2024-11-09 10:52:43,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 10:52:43,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 10:52:43,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 212 transitions. [2024-11-09 10:52:43,317 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.301994301994302 [2024-11-09 10:52:43,317 INFO L175 Difference]: Start difference. First operand has 273 places, 444 transitions, 7244 flow. Second operand 13 states and 212 transitions. [2024-11-09 10:52:43,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 634 transitions, 10941 flow [2024-11-09 10:52:48,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 634 transitions, 10824 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-11-09 10:52:48,058 INFO L231 Difference]: Finished difference. Result has 282 places, 443 transitions, 7520 flow [2024-11-09 10:52:48,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=7111, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7520, PETRI_PLACES=282, PETRI_TRANSITIONS=443} [2024-11-09 10:52:48,059 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 228 predicate places. [2024-11-09 10:52:48,059 INFO L471 AbstractCegarLoop]: Abstraction has has 282 places, 443 transitions, 7520 flow [2024-11-09 10:52:48,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 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) [2024-11-09 10:52:48,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:48,059 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:48,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 10:52:48,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-09 10:52:48,264 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:52:48,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:48,264 INFO L85 PathProgramCache]: Analyzing trace with hash 236547599, now seen corresponding path program 11 times [2024-11-09 10:52:48,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:48,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181157419] [2024-11-09 10:52:48,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:48,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:48,339 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:48,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:48,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181157419] [2024-11-09 10:52:48,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181157419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:48,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700298343] [2024-11-09 10:52:48,340 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:52:48,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:48,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:48,344 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:52:48,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 10:52:48,450 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 10:52:48,450 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:48,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:52:48,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:48,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:48,551 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:52:48,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700298343] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:48,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:48,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 10:52:48,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685618401] [2024-11-09 10:52:48,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:48,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:52:48,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:48,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:52:48,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:52:48,556 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:52:48,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 443 transitions, 7520 flow. Second operand has 15 states, 15 states have (on average 11.533333333333333) internal successors, (173), 15 states have internal predecessors, (173), 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) [2024-11-09 10:52:48,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:48,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:52:48,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:54,458 INFO L124 PetriNetUnfolderBase]: 14702/24223 cut-off events. [2024-11-09 10:52:54,458 INFO L125 PetriNetUnfolderBase]: For 566438/566438 co-relation queries the response was YES. [2024-11-09 10:52:54,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195230 conditions, 24223 events. 14702/24223 cut-off events. For 566438/566438 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 180397 event pairs, 564 based on Foata normal form. 122/24345 useless extension candidates. Maximal degree in co-relation 195106. Up to 5816 conditions per place. [2024-11-09 10:52:54,830 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 482 selfloop transitions, 351 changer transitions 20/854 dead transitions. [2024-11-09 10:52:54,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 854 transitions, 14922 flow [2024-11-09 10:52:54,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-09 10:52:54,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-09 10:52:54,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 428 transitions. [2024-11-09 10:52:54,832 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27330779054916987 [2024-11-09 10:52:54,832 INFO L175 Difference]: Start difference. First operand has 282 places, 443 transitions, 7520 flow. Second operand 29 states and 428 transitions. [2024-11-09 10:52:54,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 854 transitions, 14922 flow [2024-11-09 10:53:01,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 854 transitions, 14514 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-11-09 10:53:01,281 INFO L231 Difference]: Finished difference. Result has 306 places, 534 transitions, 9990 flow [2024-11-09 10:53:01,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=7161, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9990, PETRI_PLACES=306, PETRI_TRANSITIONS=534} [2024-11-09 10:53:01,282 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 252 predicate places. [2024-11-09 10:53:01,282 INFO L471 AbstractCegarLoop]: Abstraction has has 306 places, 534 transitions, 9990 flow [2024-11-09 10:53:01,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.533333333333333) internal successors, (173), 15 states have internal predecessors, (173), 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) [2024-11-09 10:53:01,282 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:53:01,283 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:53:01,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-09 10:53:01,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-09 10:53:01,487 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-09 10:53:01,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:53:01,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1246708917, now seen corresponding path program 12 times [2024-11-09 10:53:01,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:53:01,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046729890] [2024-11-09 10:53:01,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:53:01,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:53:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:53:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:53:01,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:53:01,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046729890] [2024-11-09 10:53:01,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046729890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:53:01,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906731041] [2024-11-09 10:53:01,602 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:53:01,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:53:01,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:53:01,604 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:53:01,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 10:53:01,708 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 10:53:01,708 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:53:01,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:53:01,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:53:01,806 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:53:01,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:53:01,834 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:53:01,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906731041] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:53:01,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:53:01,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-09 10:53:01,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636468703] [2024-11-09 10:53:01,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:53:01,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:53:01,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:53:01,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:53:01,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:53:01,842 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-09 10:53:01,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 534 transitions, 9990 flow. Second operand has 13 states, 13 states have (on average 11.538461538461538) internal successors, (150), 13 states have internal predecessors, (150), 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) [2024-11-09 10:53:01,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:53:01,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-09 10:53:01,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand