./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.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 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:52:09,603 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:52:09,654 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:52:09,661 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:52:09,661 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:52:09,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:52:09,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:52:09,681 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:52:09,682 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:52:09,682 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:52:09,682 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:52:09,683 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:52:09,683 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:52:09,683 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:52:09,684 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:52:09,684 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:52:09,684 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:52:09,685 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:52:09,685 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:52:09,687 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:52:09,687 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:52:09,688 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:52:09,688 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:52:09,689 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:52:09,689 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:52:09,689 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:52:09,691 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:52:09,692 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:52:09,692 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:52:09,692 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:52:09,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:52:09,692 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:52:09,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:52:09,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:52:09,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:52:09,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:52:09,693 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:52:09,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:52:09,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:52:09,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:52:09,694 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:52:09,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:52:09,695 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d [2024-11-19 09:52:09,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:52:09,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:52:09,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:52:09,895 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:52:09,896 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:52:09,896 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-11-19 09:52:11,297 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:52:11,450 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:52:11,451 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-11-19 09:52:11,457 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8397f9972/0aec578d743748dc82823b190b9f5a9e/FLAG65b604305 [2024-11-19 09:52:11,468 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8397f9972/0aec578d743748dc82823b190b9f5a9e [2024-11-19 09:52:11,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:52:11,472 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:52:11,473 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:52:11,473 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:52:11,477 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:52:11,478 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:52:11" (1/1) ... [2024-11-19 09:52:11,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ac5dd72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:11, skipping insertion in model container [2024-11-19 09:52:11,479 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:52:11" (1/1) ... [2024-11-19 09:52:11,497 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:52:11,673 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 09:52:11,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:52:11,698 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:52:11,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:52:11,740 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:52:11,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:11 WrapperNode [2024-11-19 09:52:11,741 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:52:11,742 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:52:11,742 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:52:11,742 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:52:11,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:11" (1/1) ... [2024-11-19 09:52:11,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:11" (1/1) ... [2024-11-19 09:52:11,772 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 161 [2024-11-19 09:52:11,773 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:52:11,773 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:52:11,773 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:52:11,773 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:52:11,782 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:11" (1/1) ... [2024-11-19 09:52:11,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:11" (1/1) ... [2024-11-19 09:52:11,785 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:11" (1/1) ... [2024-11-19 09:52:11,799 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-19 09:52:11,800 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:11" (1/1) ... [2024-11-19 09:52:11,800 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:11" (1/1) ... [2024-11-19 09:52:11,805 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:11" (1/1) ... [2024-11-19 09:52:11,808 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:11" (1/1) ... [2024-11-19 09:52:11,812 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:11" (1/1) ... [2024-11-19 09:52:11,813 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:11" (1/1) ... [2024-11-19 09:52:11,818 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:52:11,819 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:52:11,819 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:52:11,819 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:52:11,820 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:11" (1/1) ... [2024-11-19 09:52:11,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:52:11,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:52:11,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 09:52:11,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 09:52:11,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:52:11,888 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 09:52:11,888 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 09:52:11,888 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 09:52:11,888 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 09:52:11,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:52:11,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 09:52:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 09:52:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 09:52:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 09:52:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 09:52:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 09:52:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:52:11,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:52:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 09:52:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 09:52:11,891 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:52:11,972 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:52:11,973 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:52:12,257 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:52:12,257 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:52:12,455 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:52:12,456 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 09:52:12,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:52:12 BoogieIcfgContainer [2024-11-19 09:52:12,456 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:52:12,459 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:52:12,460 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:52:12,463 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:52:12,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:52:11" (1/3) ... [2024-11-19 09:52:12,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5858e32c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:52:12, skipping insertion in model container [2024-11-19 09:52:12,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:11" (2/3) ... [2024-11-19 09:52:12,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5858e32c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:52:12, skipping insertion in model container [2024-11-19 09:52:12,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:52:12" (3/3) ... [2024-11-19 09:52:12,466 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2024-11-19 09:52:12,480 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:52:12,480 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-19 09:52:12,480 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:52:12,537 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 09:52:12,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 40 transitions, 94 flow [2024-11-19 09:52:12,593 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-11-19 09:52:12,594 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:52:12,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 4/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 76 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-11-19 09:52:12,598 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 40 transitions, 94 flow [2024-11-19 09:52:12,601 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 86 flow [2024-11-19 09:52:12,612 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:52:12,620 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;@601add6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:52:12,621 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-19 09:52:12,624 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:52:12,624 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-19 09:52:12,624 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:52:12,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:12,625 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:52:12,625 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:12,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:12,630 INFO L85 PathProgramCache]: Analyzing trace with hash 515660, now seen corresponding path program 1 times [2024-11-19 09:52:12,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:12,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660659536] [2024-11-19 09:52:12,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:12,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:12,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:12,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:12,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660659536] [2024-11-19 09:52:12,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660659536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:12,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:12,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:52:12,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394680940] [2024-11-19 09:52:12,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:12,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:52:12,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:12,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:52:12,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:52:12,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-19 09:52:12,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:12,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:12,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-19 09:52:12,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:13,132 INFO L124 PetriNetUnfolderBase]: 238/440 cut-off events. [2024-11-19 09:52:13,132 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-19 09:52:13,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 440 events. 238/440 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2029 event pairs, 201 based on Foata normal form. 22/325 useless extension candidates. Maximal degree in co-relation 808. Up to 388 conditions per place. [2024-11-19 09:52:13,138 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 25 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-11-19 09:52:13,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 132 flow [2024-11-19 09:52:13,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:52:13,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:52:13,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-11-19 09:52:13,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-11-19 09:52:13,149 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 86 flow. Second operand 3 states and 57 transitions. [2024-11-19 09:52:13,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 132 flow [2024-11-19 09:52:13,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 124 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:52:13,154 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 74 flow [2024-11-19 09:52:13,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-11-19 09:52:13,159 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2024-11-19 09:52:13,160 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 74 flow [2024-11-19 09:52:13,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:13,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:13,160 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:52:13,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:52:13,161 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:13,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:13,161 INFO L85 PathProgramCache]: Analyzing trace with hash 515661, now seen corresponding path program 1 times [2024-11-19 09:52:13,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:13,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535709452] [2024-11-19 09:52:13,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:13,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:13,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:13,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:13,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535709452] [2024-11-19 09:52:13,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535709452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:13,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:13,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:52:13,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003860668] [2024-11-19 09:52:13,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:13,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:52:13,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:13,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:52:13,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:52:13,439 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-19 09:52:13,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:13,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:13,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-19 09:52:13,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:13,600 INFO L124 PetriNetUnfolderBase]: 239/443 cut-off events. [2024-11-19 09:52:13,600 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:52:13,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 443 events. 239/443 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2027 event pairs, 201 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 832. Up to 393 conditions per place. [2024-11-19 09:52:13,606 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 27 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2024-11-19 09:52:13,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 144 flow [2024-11-19 09:52:13,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:52:13,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:52:13,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-11-19 09:52:13,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-11-19 09:52:13,608 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 74 flow. Second operand 4 states and 68 transitions. [2024-11-19 09:52:13,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 144 flow [2024-11-19 09:52:13,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 138 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:52:13,610 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 97 flow [2024-11-19 09:52:13,610 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2024-11-19 09:52:13,615 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-19 09:52:13,615 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 97 flow [2024-11-19 09:52:13,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:13,615 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:13,615 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-19 09:52:13,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:52:13,616 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:13,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:13,616 INFO L85 PathProgramCache]: Analyzing trace with hash 495566162, now seen corresponding path program 1 times [2024-11-19 09:52:13,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:13,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576104918] [2024-11-19 09:52:13,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:13,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:13,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:13,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:13,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576104918] [2024-11-19 09:52:13,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576104918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:52:13,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178259861] [2024-11-19 09:52:13,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:13,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:52:13,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:52:13,910 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:52:13,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:52:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:13,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 09:52:13,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:52:14,037 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 [2024-11-19 09:52:14,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:14,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:52:14,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:14,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178259861] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:52:14,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:52:14,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-19 09:52:14,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691494243] [2024-11-19 09:52:14,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:52:14,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:14,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:14,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:14,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:14,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-19 09:52:14,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 97 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:14,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:14,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-19 09:52:14,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:14,507 INFO L124 PetriNetUnfolderBase]: 240/445 cut-off events. [2024-11-19 09:52:14,507 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:52:14,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 445 events. 240/445 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2047 event pairs, 201 based on Foata normal form. 0/307 useless extension candidates. Maximal degree in co-relation 839. Up to 390 conditions per place. [2024-11-19 09:52:14,511 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 23 selfloop transitions, 10 changer transitions 0/38 dead transitions. [2024-11-19 09:52:14,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 171 flow [2024-11-19 09:52:14,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 09:52:14,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 09:52:14,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-11-19 09:52:14,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-11-19 09:52:14,514 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 97 flow. Second operand 8 states and 107 transitions. [2024-11-19 09:52:14,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 171 flow [2024-11-19 09:52:14,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:52:14,517 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 122 flow [2024-11-19 09:52:14,518 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=122, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-11-19 09:52:14,518 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2024-11-19 09:52:14,518 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 122 flow [2024-11-19 09:52:14,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:14,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:14,520 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 09:52:14,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 09:52:14,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:52:14,724 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:14,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:14,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1815149000, now seen corresponding path program 1 times [2024-11-19 09:52:14,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:14,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273096013] [2024-11-19 09:52:14,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:14,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:14,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:14,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:14,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273096013] [2024-11-19 09:52:14,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273096013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:14,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:14,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:52:14,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803532567] [2024-11-19 09:52:14,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:14,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:52:14,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:14,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:52:14,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:52:14,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-19 09:52:14,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:14,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:14,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-19 09:52:14,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:14,841 INFO L124 PetriNetUnfolderBase]: 169/320 cut-off events. [2024-11-19 09:52:14,842 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:52:14,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635 conditions, 320 events. 169/320 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1276 event pairs, 136 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 597. Up to 273 conditions per place. [2024-11-19 09:52:14,844 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 26 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2024-11-19 09:52:14,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 176 flow [2024-11-19 09:52:14,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:52:14,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:52:14,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-11-19 09:52:14,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-11-19 09:52:14,847 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 122 flow. Second operand 4 states and 63 transitions. [2024-11-19 09:52:14,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 176 flow [2024-11-19 09:52:14,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 134 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-19 09:52:14,849 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 82 flow [2024-11-19 09:52:14,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2024-11-19 09:52:14,850 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2024-11-19 09:52:14,851 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 82 flow [2024-11-19 09:52:14,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:14,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:14,851 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 09:52:14,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:52:14,852 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:14,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:14,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1815148999, now seen corresponding path program 1 times [2024-11-19 09:52:14,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:14,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161475508] [2024-11-19 09:52:14,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:14,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:14,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:14,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161475508] [2024-11-19 09:52:14,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161475508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:14,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:14,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:52:14,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938727715] [2024-11-19 09:52:14,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:14,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:52:14,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:14,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:52:14,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:52:14,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-11-19 09:52:14,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:14,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:14,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-11-19 09:52:14,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:14,980 INFO L124 PetriNetUnfolderBase]: 181/356 cut-off events. [2024-11-19 09:52:14,980 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:52:14,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 356 events. 181/356 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1445 event pairs, 149 based on Foata normal form. 14/309 useless extension candidates. Maximal degree in co-relation 589. Up to 278 conditions per place. [2024-11-19 09:52:14,982 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 27 selfloop transitions, 2 changer transitions 8/42 dead transitions. [2024-11-19 09:52:14,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 172 flow [2024-11-19 09:52:14,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:52:14,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:52:14,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2024-11-19 09:52:14,986 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-19 09:52:14,986 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 82 flow. Second operand 4 states and 80 transitions. [2024-11-19 09:52:14,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 172 flow [2024-11-19 09:52:14,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 167 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:52:14,987 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 90 flow [2024-11-19 09:52:14,987 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=77, 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=4, PETRI_FLOW=90, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-11-19 09:52:14,988 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-19 09:52:14,988 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 90 flow [2024-11-19 09:52:14,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:14,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:14,988 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:14,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:52:14,988 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:14,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:14,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1611599124, now seen corresponding path program 1 times [2024-11-19 09:52:14,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:14,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491809841] [2024-11-19 09:52:14,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:14,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:15,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:15,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:15,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491809841] [2024-11-19 09:52:15,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491809841] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:52:15,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971623343] [2024-11-19 09:52:15,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:15,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:52:15,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:52:15,128 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:52:15,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 09:52:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:15,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 09:52:15,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:52:15,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:15,236 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:52:15,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971623343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:15,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 09:52:15,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2024-11-19 09:52:15,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550837913] [2024-11-19 09:52:15,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:15,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:52:15,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:15,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:52:15,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-19 09:52:15,244 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-11-19 09:52:15,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:15,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:15,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-11-19 09:52:15,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:15,297 INFO L124 PetriNetUnfolderBase]: 109/214 cut-off events. [2024-11-19 09:52:15,297 INFO L125 PetriNetUnfolderBase]: For 33/36 co-relation queries the response was YES. [2024-11-19 09:52:15,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 214 events. 109/214 cut-off events. For 33/36 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 685 event pairs, 83 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 437. Up to 176 conditions per place. [2024-11-19 09:52:15,299 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 23 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-11-19 09:52:15,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 130 flow [2024-11-19 09:52:15,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:52:15,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:52:15,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-11-19 09:52:15,300 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-11-19 09:52:15,300 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 90 flow. Second operand 4 states and 64 transitions. [2024-11-19 09:52:15,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 130 flow [2024-11-19 09:52:15,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:52:15,301 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 80 flow [2024-11-19 09:52:15,301 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2024-11-19 09:52:15,301 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2024-11-19 09:52:15,301 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 80 flow [2024-11-19 09:52:15,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:15,302 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:15,302 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] [2024-11-19 09:52:15,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 09:52:15,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-19 09:52:15,503 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:15,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:15,503 INFO L85 PathProgramCache]: Analyzing trace with hash -719122717, now seen corresponding path program 1 times [2024-11-19 09:52:15,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:15,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029421538] [2024-11-19 09:52:15,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:15,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:15,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:52:15,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:15,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029421538] [2024-11-19 09:52:15,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029421538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:15,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:15,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:52:15,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251813125] [2024-11-19 09:52:15,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:15,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:52:15,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:15,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:52:15,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:52:15,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-11-19 09:52:15,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:15,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:15,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-11-19 09:52:15,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:15,625 INFO L124 PetriNetUnfolderBase]: 117/232 cut-off events. [2024-11-19 09:52:15,626 INFO L125 PetriNetUnfolderBase]: For 40/43 co-relation queries the response was YES. [2024-11-19 09:52:15,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 232 events. 117/232 cut-off events. For 40/43 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 714 event pairs, 34 based on Foata normal form. 3/223 useless extension candidates. Maximal degree in co-relation 468. Up to 159 conditions per place. [2024-11-19 09:52:15,627 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 30 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-11-19 09:52:15,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 165 flow [2024-11-19 09:52:15,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:52:15,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:52:15,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-11-19 09:52:15,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-11-19 09:52:15,629 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 80 flow. Second operand 3 states and 59 transitions. [2024-11-19 09:52:15,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 165 flow [2024-11-19 09:52:15,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:52:15,630 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 99 flow [2024-11-19 09:52:15,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2024-11-19 09:52:15,632 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2024-11-19 09:52:15,632 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 99 flow [2024-11-19 09:52:15,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:15,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:15,633 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] [2024-11-19 09:52:15,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 09:52:15,633 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:15,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:15,633 INFO L85 PathProgramCache]: Analyzing trace with hash 220299981, now seen corresponding path program 2 times [2024-11-19 09:52:15,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:15,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536511172] [2024-11-19 09:52:15,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:52:15,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:15,648 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:52:15,649 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:15,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:52:15,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:15,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536511172] [2024-11-19 09:52:15,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536511172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:15,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:15,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 09:52:15,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424298579] [2024-11-19 09:52:15,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:15,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:52:15,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:15,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:52:15,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:52:15,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-19 09:52:15,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 99 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:15,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:15,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-19 09:52:15,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:16,113 INFO L124 PetriNetUnfolderBase]: 172/339 cut-off events. [2024-11-19 09:52:16,113 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-19 09:52:16,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 806 conditions, 339 events. 172/339 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1271 event pairs, 10 based on Foata normal form. 1/338 useless extension candidates. Maximal degree in co-relation 778. Up to 199 conditions per place. [2024-11-19 09:52:16,115 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 46 selfloop transitions, 14 changer transitions 5/69 dead transitions. [2024-11-19 09:52:16,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 69 transitions, 333 flow [2024-11-19 09:52:16,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:52:16,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:52:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-11-19 09:52:16,117 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3775 [2024-11-19 09:52:16,117 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 99 flow. Second operand 10 states and 151 transitions. [2024-11-19 09:52:16,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 69 transitions, 333 flow [2024-11-19 09:52:16,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 69 transitions, 307 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-19 09:52:16,119 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 162 flow [2024-11-19 09:52:16,119 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=162, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2024-11-19 09:52:16,119 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2024-11-19 09:52:16,119 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 162 flow [2024-11-19 09:52:16,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:16,120 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:16,120 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] [2024-11-19 09:52:16,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 09:52:16,120 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:16,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:16,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1499283237, now seen corresponding path program 3 times [2024-11-19 09:52:16,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:16,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544541246] [2024-11-19 09:52:16,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:52:16,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:16,133 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 09:52:16,133 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:52:16,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:16,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544541246] [2024-11-19 09:52:16,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544541246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:16,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:16,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 09:52:16,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691847195] [2024-11-19 09:52:16,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:16,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:52:16,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:16,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:52:16,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:52:16,549 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-19 09:52:16,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 162 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:16,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:16,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-19 09:52:16,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:16,683 INFO L124 PetriNetUnfolderBase]: 194/393 cut-off events. [2024-11-19 09:52:16,683 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2024-11-19 09:52:16,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 393 events. 194/393 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1618 event pairs, 24 based on Foata normal form. 1/393 useless extension candidates. Maximal degree in co-relation 1059. Up to 226 conditions per place. [2024-11-19 09:52:16,685 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 48 selfloop transitions, 21 changer transitions 5/78 dead transitions. [2024-11-19 09:52:16,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 78 transitions, 448 flow [2024-11-19 09:52:16,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:52:16,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:52:16,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-11-19 09:52:16,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.385 [2024-11-19 09:52:16,687 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 162 flow. Second operand 10 states and 154 transitions. [2024-11-19 09:52:16,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 78 transitions, 448 flow [2024-11-19 09:52:16,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 78 transitions, 437 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-19 09:52:16,689 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 285 flow [2024-11-19 09:52:16,689 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=285, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-11-19 09:52:16,689 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2024-11-19 09:52:16,690 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 285 flow [2024-11-19 09:52:16,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:16,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:16,690 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] [2024-11-19 09:52:16,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 09:52:16,690 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:16,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:16,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1747105657, now seen corresponding path program 4 times [2024-11-19 09:52:16,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:16,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898415983] [2024-11-19 09:52:16,691 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:52:16,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:16,707 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:52:16,707 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:52:16,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:16,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898415983] [2024-11-19 09:52:16,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898415983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:16,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:16,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 09:52:16,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646369640] [2024-11-19 09:52:16,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:16,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:52:16,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:16,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:52:16,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:52:16,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-11-19 09:52:16,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 285 flow. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:16,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:16,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-11-19 09:52:16,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:17,186 INFO L124 PetriNetUnfolderBase]: 238/496 cut-off events. [2024-11-19 09:52:17,186 INFO L125 PetriNetUnfolderBase]: For 552/552 co-relation queries the response was YES. [2024-11-19 09:52:17,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1555 conditions, 496 events. 238/496 cut-off events. For 552/552 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2282 event pairs, 23 based on Foata normal form. 1/497 useless extension candidates. Maximal degree in co-relation 1533. Up to 231 conditions per place. [2024-11-19 09:52:17,189 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 59 selfloop transitions, 28 changer transitions 4/94 dead transitions. [2024-11-19 09:52:17,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 94 transitions, 628 flow [2024-11-19 09:52:17,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:52:17,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:52:17,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-11-19 09:52:17,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.385 [2024-11-19 09:52:17,190 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 285 flow. Second operand 10 states and 154 transitions. [2024-11-19 09:52:17,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 94 transitions, 628 flow [2024-11-19 09:52:17,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 94 transitions, 602 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-19 09:52:17,193 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 372 flow [2024-11-19 09:52:17,193 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=372, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-11-19 09:52:17,193 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 26 predicate places. [2024-11-19 09:52:17,193 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 372 flow [2024-11-19 09:52:17,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:17,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:17,194 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] [2024-11-19 09:52:17,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 09:52:17,194 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:17,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:17,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1129169335, now seen corresponding path program 5 times [2024-11-19 09:52:17,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:17,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782958337] [2024-11-19 09:52:17,195 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:52:17,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:17,206 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:52:17,206 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:17,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:52:17,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:17,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782958337] [2024-11-19 09:52:17,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782958337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:17,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:17,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 09:52:17,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199003469] [2024-11-19 09:52:17,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:17,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:52:17,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:17,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:52:17,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:52:17,473 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-19 09:52:17,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 372 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:17,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:17,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-19 09:52:17,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:17,603 INFO L124 PetriNetUnfolderBase]: 207/445 cut-off events. [2024-11-19 09:52:17,604 INFO L125 PetriNetUnfolderBase]: For 975/975 co-relation queries the response was YES. [2024-11-19 09:52:17,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1543 conditions, 445 events. 207/445 cut-off events. For 975/975 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2052 event pairs, 33 based on Foata normal form. 1/446 useless extension candidates. Maximal degree in co-relation 1499. Up to 268 conditions per place. [2024-11-19 09:52:17,606 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 54 selfloop transitions, 23 changer transitions 5/86 dead transitions. [2024-11-19 09:52:17,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 86 transitions, 668 flow [2024-11-19 09:52:17,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:52:17,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:52:17,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-11-19 09:52:17,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3825 [2024-11-19 09:52:17,607 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 372 flow. Second operand 10 states and 153 transitions. [2024-11-19 09:52:17,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 86 transitions, 668 flow [2024-11-19 09:52:17,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 86 transitions, 609 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-11-19 09:52:17,610 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 417 flow [2024-11-19 09:52:17,610 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=417, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2024-11-19 09:52:17,611 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 33 predicate places. [2024-11-19 09:52:17,611 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 417 flow [2024-11-19 09:52:17,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:17,611 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:17,611 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] [2024-11-19 09:52:17,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 09:52:17,611 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:17,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:17,612 INFO L85 PathProgramCache]: Analyzing trace with hash 528006183, now seen corresponding path program 6 times [2024-11-19 09:52:17,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:17,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948273055] [2024-11-19 09:52:17,612 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:52:17,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:17,622 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 09:52:17,622 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:17,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:52:17,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:17,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948273055] [2024-11-19 09:52:17,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948273055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:17,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:17,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 09:52:17,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588851110] [2024-11-19 09:52:17,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:17,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:52:17,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:17,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:52:17,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:52:17,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-19 09:52:17,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 417 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:17,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:17,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-19 09:52:17,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:18,055 INFO L124 PetriNetUnfolderBase]: 219/479 cut-off events. [2024-11-19 09:52:18,055 INFO L125 PetriNetUnfolderBase]: For 1047/1047 co-relation queries the response was YES. [2024-11-19 09:52:18,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 479 events. 219/479 cut-off events. For 1047/1047 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2309 event pairs, 22 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 1651. Up to 287 conditions per place. [2024-11-19 09:52:18,058 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 59 selfloop transitions, 24 changer transitions 5/92 dead transitions. [2024-11-19 09:52:18,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 92 transitions, 718 flow [2024-11-19 09:52:18,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:52:18,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:52:18,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-11-19 09:52:18,060 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-11-19 09:52:18,060 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 417 flow. Second operand 10 states and 155 transitions. [2024-11-19 09:52:18,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 92 transitions, 718 flow [2024-11-19 09:52:18,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 92 transitions, 674 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-19 09:52:18,064 INFO L231 Difference]: Finished difference. Result has 79 places, 65 transitions, 462 flow [2024-11-19 09:52:18,064 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=462, PETRI_PLACES=79, PETRI_TRANSITIONS=65} [2024-11-19 09:52:18,065 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 39 predicate places. [2024-11-19 09:52:18,065 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 65 transitions, 462 flow [2024-11-19 09:52:18,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:18,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:18,065 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] [2024-11-19 09:52:18,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 09:52:18,066 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:18,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:18,066 INFO L85 PathProgramCache]: Analyzing trace with hash -829425351, now seen corresponding path program 7 times [2024-11-19 09:52:18,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:18,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306905704] [2024-11-19 09:52:18,067 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:52:18,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:18,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:52:18,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:18,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306905704] [2024-11-19 09:52:18,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306905704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:18,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:18,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 09:52:18,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018731508] [2024-11-19 09:52:18,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:18,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:52:18,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:18,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:52:18,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:52:18,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-19 09:52:18,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 65 transitions, 462 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:18,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:18,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-19 09:52:18,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:18,500 INFO L124 PetriNetUnfolderBase]: 215/466 cut-off events. [2024-11-19 09:52:18,500 INFO L125 PetriNetUnfolderBase]: For 1596/1604 co-relation queries the response was YES. [2024-11-19 09:52:18,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1753 conditions, 466 events. 215/466 cut-off events. For 1596/1604 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2197 event pairs, 23 based on Foata normal form. 9/475 useless extension candidates. Maximal degree in co-relation 1729. Up to 291 conditions per place. [2024-11-19 09:52:18,504 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 53 selfloop transitions, 23 changer transitions 8/88 dead transitions. [2024-11-19 09:52:18,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 88 transitions, 733 flow [2024-11-19 09:52:18,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:52:18,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:52:18,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-11-19 09:52:18,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-11-19 09:52:18,505 INFO L175 Difference]: Start difference. First operand has 79 places, 65 transitions, 462 flow. Second operand 10 states and 150 transitions. [2024-11-19 09:52:18,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 88 transitions, 733 flow [2024-11-19 09:52:18,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 88 transitions, 674 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-19 09:52:18,510 INFO L231 Difference]: Finished difference. Result has 82 places, 65 transitions, 458 flow [2024-11-19 09:52:18,510 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=458, PETRI_PLACES=82, PETRI_TRANSITIONS=65} [2024-11-19 09:52:18,511 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 42 predicate places. [2024-11-19 09:52:18,511 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 65 transitions, 458 flow [2024-11-19 09:52:18,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:18,512 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:18,512 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] [2024-11-19 09:52:18,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 09:52:18,512 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:18,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:18,512 INFO L85 PathProgramCache]: Analyzing trace with hash -120970739, now seen corresponding path program 8 times [2024-11-19 09:52:18,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:18,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455748032] [2024-11-19 09:52:18,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:52:18,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:18,523 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:52:18,524 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:18,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:52:18,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:18,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455748032] [2024-11-19 09:52:18,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455748032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:18,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:18,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 09:52:18,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39129899] [2024-11-19 09:52:18,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:18,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:52:18,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:18,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:52:18,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:52:18,816 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-19 09:52:18,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 65 transitions, 458 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:18,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:18,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-19 09:52:18,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:18,972 INFO L124 PetriNetUnfolderBase]: 224/491 cut-off events. [2024-11-19 09:52:18,972 INFO L125 PetriNetUnfolderBase]: For 1754/1766 co-relation queries the response was YES. [2024-11-19 09:52:18,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1849 conditions, 491 events. 224/491 cut-off events. For 1754/1766 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2338 event pairs, 43 based on Foata normal form. 3/494 useless extension candidates. Maximal degree in co-relation 1820. Up to 297 conditions per place. [2024-11-19 09:52:18,975 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 62 selfloop transitions, 24 changer transitions 5/95 dead transitions. [2024-11-19 09:52:18,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 95 transitions, 808 flow [2024-11-19 09:52:18,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:52:18,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:52:18,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-11-19 09:52:18,976 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3925 [2024-11-19 09:52:18,976 INFO L175 Difference]: Start difference. First operand has 82 places, 65 transitions, 458 flow. Second operand 10 states and 157 transitions. [2024-11-19 09:52:18,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 95 transitions, 808 flow [2024-11-19 09:52:18,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 95 transitions, 752 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-11-19 09:52:18,981 INFO L231 Difference]: Finished difference. Result has 84 places, 68 transitions, 501 flow [2024-11-19 09:52:18,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=501, PETRI_PLACES=84, PETRI_TRANSITIONS=68} [2024-11-19 09:52:18,981 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 44 predicate places. [2024-11-19 09:52:18,982 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 501 flow [2024-11-19 09:52:18,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:18,982 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:18,982 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] [2024-11-19 09:52:18,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 09:52:18,982 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:18,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:18,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1119992825, now seen corresponding path program 9 times [2024-11-19 09:52:18,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:18,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672159340] [2024-11-19 09:52:18,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:52:18,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:18,991 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 09:52:18,992 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:19,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:52:19,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:19,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672159340] [2024-11-19 09:52:19,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672159340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:19,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:19,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 09:52:19,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362816154] [2024-11-19 09:52:19,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:19,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:52:19,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:19,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:52:19,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:52:19,215 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-19 09:52:19,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 501 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:19,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:19,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-19 09:52:19,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:19,346 INFO L124 PetriNetUnfolderBase]: 220/480 cut-off events. [2024-11-19 09:52:19,346 INFO L125 PetriNetUnfolderBase]: For 2347/2367 co-relation queries the response was YES. [2024-11-19 09:52:19,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1917 conditions, 480 events. 220/480 cut-off events. For 2347/2367 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2309 event pairs, 34 based on Foata normal form. 11/491 useless extension candidates. Maximal degree in co-relation 1890. Up to 301 conditions per place. [2024-11-19 09:52:19,349 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 56 selfloop transitions, 23 changer transitions 8/91 dead transitions. [2024-11-19 09:52:19,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 91 transitions, 813 flow [2024-11-19 09:52:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:52:19,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:52:19,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-11-19 09:52:19,350 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38 [2024-11-19 09:52:19,350 INFO L175 Difference]: Start difference. First operand has 84 places, 68 transitions, 501 flow. Second operand 10 states and 152 transitions. [2024-11-19 09:52:19,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 91 transitions, 813 flow [2024-11-19 09:52:19,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 91 transitions, 744 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-11-19 09:52:19,354 INFO L231 Difference]: Finished difference. Result has 87 places, 68 transitions, 489 flow [2024-11-19 09:52:19,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=489, PETRI_PLACES=87, PETRI_TRANSITIONS=68} [2024-11-19 09:52:19,355 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 47 predicate places. [2024-11-19 09:52:19,355 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 68 transitions, 489 flow [2024-11-19 09:52:19,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:19,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:19,355 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] [2024-11-19 09:52:19,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 09:52:19,356 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:19,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:19,356 INFO L85 PathProgramCache]: Analyzing trace with hash 571372601, now seen corresponding path program 10 times [2024-11-19 09:52:19,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:19,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052400449] [2024-11-19 09:52:19,356 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:52:19,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:19,367 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:52:19,367 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:19,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:52:19,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:19,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052400449] [2024-11-19 09:52:19,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052400449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:19,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:19,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 09:52:19,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309934308] [2024-11-19 09:52:19,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:19,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:52:19,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:19,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:52:19,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:52:19,595 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-11-19 09:52:19,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 68 transitions, 489 flow. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:19,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:19,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-11-19 09:52:19,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:19,832 INFO L124 PetriNetUnfolderBase]: 261/553 cut-off events. [2024-11-19 09:52:19,832 INFO L125 PetriNetUnfolderBase]: For 2756/2780 co-relation queries the response was YES. [2024-11-19 09:52:19,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2179 conditions, 553 events. 261/553 cut-off events. For 2756/2780 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2633 event pairs, 49 based on Foata normal form. 5/558 useless extension candidates. Maximal degree in co-relation 2147. Up to 339 conditions per place. [2024-11-19 09:52:19,835 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 71 selfloop transitions, 24 changer transitions 5/103 dead transitions. [2024-11-19 09:52:19,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 103 transitions, 893 flow [2024-11-19 09:52:19,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:52:19,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:52:19,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-11-19 09:52:19,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-11-19 09:52:19,837 INFO L175 Difference]: Start difference. First operand has 87 places, 68 transitions, 489 flow. Second operand 10 states and 155 transitions. [2024-11-19 09:52:19,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 103 transitions, 893 flow [2024-11-19 09:52:19,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 103 transitions, 835 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-19 09:52:19,841 INFO L231 Difference]: Finished difference. Result has 90 places, 72 transitions, 553 flow [2024-11-19 09:52:19,842 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=553, PETRI_PLACES=90, PETRI_TRANSITIONS=72} [2024-11-19 09:52:19,842 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 50 predicate places. [2024-11-19 09:52:19,842 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 72 transitions, 553 flow [2024-11-19 09:52:19,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:19,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:19,843 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] [2024-11-19 09:52:19,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 09:52:19,843 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:19,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:19,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1988580389, now seen corresponding path program 11 times [2024-11-19 09:52:19,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:19,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918065436] [2024-11-19 09:52:19,843 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:52:19,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:19,853 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:52:19,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:20,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:52:20,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:20,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918065436] [2024-11-19 09:52:20,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918065436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:20,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:20,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 09:52:20,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000688224] [2024-11-19 09:52:20,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:20,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:52:20,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:20,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:52:20,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:52:20,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-19 09:52:20,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 72 transitions, 553 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:20,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:20,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-19 09:52:20,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:20,224 INFO L124 PetriNetUnfolderBase]: 230/501 cut-off events. [2024-11-19 09:52:20,224 INFO L125 PetriNetUnfolderBase]: For 3513/3555 co-relation queries the response was YES. [2024-11-19 09:52:20,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2115 conditions, 501 events. 230/501 cut-off events. For 3513/3555 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2400 event pairs, 41 based on Foata normal form. 13/513 useless extension candidates. Maximal degree in co-relation 2084. Up to 316 conditions per place. [2024-11-19 09:52:20,227 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 60 selfloop transitions, 22 changer transitions 8/94 dead transitions. [2024-11-19 09:52:20,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 94 transitions, 874 flow [2024-11-19 09:52:20,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:52:20,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:52:20,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-11-19 09:52:20,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3825 [2024-11-19 09:52:20,228 INFO L175 Difference]: Start difference. First operand has 90 places, 72 transitions, 553 flow. Second operand 10 states and 153 transitions. [2024-11-19 09:52:20,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 94 transitions, 874 flow [2024-11-19 09:52:20,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 94 transitions, 800 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-11-19 09:52:20,234 INFO L231 Difference]: Finished difference. Result has 94 places, 72 transitions, 536 flow [2024-11-19 09:52:20,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=536, PETRI_PLACES=94, PETRI_TRANSITIONS=72} [2024-11-19 09:52:20,235 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 54 predicate places. [2024-11-19 09:52:20,235 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 72 transitions, 536 flow [2024-11-19 09:52:20,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:20,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:20,235 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] [2024-11-19 09:52:20,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 09:52:20,235 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:20,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:20,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1831596706, now seen corresponding path program 1 times [2024-11-19 09:52:20,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:20,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611372347] [2024-11-19 09:52:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:20,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:20,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:20,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:20,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611372347] [2024-11-19 09:52:20,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611372347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:52:20,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015243574] [2024-11-19 09:52:20,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:20,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:52:20,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:52:20,314 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:52:20,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 09:52:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:20,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 09:52:20,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:52:20,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:20,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:52:20,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:20,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015243574] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:52:20,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:52:20,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2024-11-19 09:52:20,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341018620] [2024-11-19 09:52:20,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:52:20,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 09:52:20,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:20,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 09:52:20,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-19 09:52:20,597 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-11-19 09:52:20,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 72 transitions, 536 flow. Second operand has 14 states, 14 states have (on average 13.428571428571429) internal successors, (188), 14 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) [2024-11-19 09:52:20,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:20,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-11-19 09:52:20,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:20,851 INFO L124 PetriNetUnfolderBase]: 367/879 cut-off events. [2024-11-19 09:52:20,851 INFO L125 PetriNetUnfolderBase]: For 6632/6682 co-relation queries the response was YES. [2024-11-19 09:52:20,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3734 conditions, 879 events. 367/879 cut-off events. For 6632/6682 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5244 event pairs, 154 based on Foata normal form. 38/916 useless extension candidates. Maximal degree in co-relation 3698. Up to 379 conditions per place. [2024-11-19 09:52:20,857 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 116 selfloop transitions, 8 changer transitions 13/142 dead transitions. [2024-11-19 09:52:20,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 142 transitions, 1385 flow [2024-11-19 09:52:20,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 09:52:20,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 09:52:20,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-11-19 09:52:20,858 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-11-19 09:52:20,859 INFO L175 Difference]: Start difference. First operand has 94 places, 72 transitions, 536 flow. Second operand 8 states and 138 transitions. [2024-11-19 09:52:20,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 142 transitions, 1385 flow [2024-11-19 09:52:20,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 142 transitions, 1265 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-11-19 09:52:20,870 INFO L231 Difference]: Finished difference. Result has 94 places, 74 transitions, 541 flow [2024-11-19 09:52:20,870 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=541, PETRI_PLACES=94, PETRI_TRANSITIONS=74} [2024-11-19 09:52:20,871 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 54 predicate places. [2024-11-19 09:52:20,871 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 74 transitions, 541 flow [2024-11-19 09:52:20,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.428571428571429) internal successors, (188), 14 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) [2024-11-19 09:52:20,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:20,871 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:20,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 09:52:21,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 09:52:21,076 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:21,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:21,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1817878605, now seen corresponding path program 1 times [2024-11-19 09:52:21,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:21,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255283943] [2024-11-19 09:52:21,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:21,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:52:21,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:21,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255283943] [2024-11-19 09:52:21,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255283943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:21,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:21,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:52:21,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218659811] [2024-11-19 09:52:21,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:21,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:52:21,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:21,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:52:21,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:52:21,116 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-11-19 09:52:21,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 74 transitions, 541 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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) [2024-11-19 09:52:21,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:21,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-11-19 09:52:21,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:21,219 INFO L124 PetriNetUnfolderBase]: 341/861 cut-off events. [2024-11-19 09:52:21,219 INFO L125 PetriNetUnfolderBase]: For 7963/8075 co-relation queries the response was YES. [2024-11-19 09:52:21,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3656 conditions, 861 events. 341/861 cut-off events. For 7963/8075 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5106 event pairs, 98 based on Foata normal form. 83/943 useless extension candidates. Maximal degree in co-relation 3582. Up to 322 conditions per place. [2024-11-19 09:52:21,224 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 58 selfloop transitions, 7 changer transitions 27/97 dead transitions. [2024-11-19 09:52:21,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 97 transitions, 876 flow [2024-11-19 09:52:21,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:52:21,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:52:21,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-19 09:52:21,225 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56875 [2024-11-19 09:52:21,225 INFO L175 Difference]: Start difference. First operand has 94 places, 74 transitions, 541 flow. Second operand 4 states and 91 transitions. [2024-11-19 09:52:21,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 97 transitions, 876 flow [2024-11-19 09:52:21,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 97 transitions, 805 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-11-19 09:52:21,235 INFO L231 Difference]: Finished difference. Result has 90 places, 44 transitions, 308 flow [2024-11-19 09:52:21,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=90, PETRI_TRANSITIONS=44} [2024-11-19 09:52:21,236 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 50 predicate places. [2024-11-19 09:52:21,236 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 44 transitions, 308 flow [2024-11-19 09:52:21,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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) [2024-11-19 09:52:21,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:21,236 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] [2024-11-19 09:52:21,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 09:52:21,236 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:21,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:21,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1362151489, now seen corresponding path program 2 times [2024-11-19 09:52:21,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:21,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133189694] [2024-11-19 09:52:21,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:52:21,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:21,252 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:52:21,253 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:21,492 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:21,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:21,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133189694] [2024-11-19 09:52:21,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133189694] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:52:21,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429677490] [2024-11-19 09:52:21,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:52:21,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:52:21,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:52:21,494 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:52:21,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 09:52:21,554 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:52:21,554 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:21,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 09:52:21,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:52:21,767 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 09:52:21,767 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 23 treesize of output 10 [2024-11-19 09:52:21,783 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:21,783 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:52:21,878 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 09:52:21,879 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 25 treesize of output 12 [2024-11-19 09:52:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:22,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429677490] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:52:22,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:52:22,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-19 09:52:22,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153723167] [2024-11-19 09:52:22,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:52:22,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 09:52:22,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:22,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 09:52:22,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2024-11-19 09:52:22,124 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-11-19 09:52:22,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 44 transitions, 308 flow. Second operand has 22 states, 22 states have (on average 10.863636363636363) internal successors, (239), 22 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:22,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:22,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-11-19 09:52:22,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:23,176 INFO L124 PetriNetUnfolderBase]: 945/1811 cut-off events. [2024-11-19 09:52:23,176 INFO L125 PetriNetUnfolderBase]: For 18427/18427 co-relation queries the response was YES. [2024-11-19 09:52:23,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8014 conditions, 1811 events. 945/1811 cut-off events. For 18427/18427 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 10089 event pairs, 160 based on Foata normal form. 39/1849 useless extension candidates. Maximal degree in co-relation 7781. Up to 396 conditions per place. [2024-11-19 09:52:23,189 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 156 selfloop transitions, 42 changer transitions 0/201 dead transitions. [2024-11-19 09:52:23,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 201 transitions, 1907 flow [2024-11-19 09:52:23,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 09:52:23,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-19 09:52:23,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 307 transitions. [2024-11-19 09:52:23,191 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4263888888888889 [2024-11-19 09:52:23,191 INFO L175 Difference]: Start difference. First operand has 90 places, 44 transitions, 308 flow. Second operand 18 states and 307 transitions. [2024-11-19 09:52:23,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 201 transitions, 1907 flow [2024-11-19 09:52:23,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 201 transitions, 1364 flow, removed 257 selfloop flow, removed 17 redundant places. [2024-11-19 09:52:23,203 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 655 flow [2024-11-19 09:52:23,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=655, PETRI_PLACES=79, PETRI_TRANSITIONS=82} [2024-11-19 09:52:23,203 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 39 predicate places. [2024-11-19 09:52:23,203 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 655 flow [2024-11-19 09:52:23,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.863636363636363) internal successors, (239), 22 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:23,204 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:23,204 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] [2024-11-19 09:52:23,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 09:52:23,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:52:23,405 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:23,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:23,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1333862899, now seen corresponding path program 3 times [2024-11-19 09:52:23,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:23,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979389721] [2024-11-19 09:52:23,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:52:23,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:23,423 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:52:23,424 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:23,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:52:23,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:23,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979389721] [2024-11-19 09:52:23,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979389721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:52:23,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567964945] [2024-11-19 09:52:23,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:52:23,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:52:23,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:52:23,488 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:52:23,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 09:52:23,545 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:52:23,546 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:23,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 09:52:23,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:52:23,578 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:52:23,578 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:52:23,603 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 09:52:23,603 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 25 treesize of output 12 [2024-11-19 09:52:23,617 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:52:23,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567964945] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:52:23,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:52:23,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-11-19 09:52:23,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968577979] [2024-11-19 09:52:23,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:52:23,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 09:52:23,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:23,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 09:52:23,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-19 09:52:23,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-11-19 09:52:23,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 655 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:23,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:23,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-11-19 09:52:23,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:23,877 INFO L124 PetriNetUnfolderBase]: 1314/2511 cut-off events. [2024-11-19 09:52:23,877 INFO L125 PetriNetUnfolderBase]: For 10584/10584 co-relation queries the response was YES. [2024-11-19 09:52:23,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9603 conditions, 2511 events. 1314/2511 cut-off events. For 10584/10584 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 14380 event pairs, 244 based on Foata normal form. 56/2565 useless extension candidates. Maximal degree in co-relation 7814. Up to 1031 conditions per place. [2024-11-19 09:52:23,892 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 110 selfloop transitions, 32 changer transitions 0/145 dead transitions. [2024-11-19 09:52:23,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 145 transitions, 1462 flow [2024-11-19 09:52:23,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:52:23,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:52:23,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-11-19 09:52:23,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-11-19 09:52:23,896 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 655 flow. Second operand 7 states and 110 transitions. [2024-11-19 09:52:23,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 145 transitions, 1462 flow [2024-11-19 09:52:23,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 145 transitions, 1326 flow, removed 66 selfloop flow, removed 4 redundant places. [2024-11-19 09:52:23,912 INFO L231 Difference]: Finished difference. Result has 83 places, 95 transitions, 791 flow [2024-11-19 09:52:23,912 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=791, PETRI_PLACES=83, PETRI_TRANSITIONS=95} [2024-11-19 09:52:23,912 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 43 predicate places. [2024-11-19 09:52:23,913 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 95 transitions, 791 flow [2024-11-19 09:52:23,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:23,913 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:23,913 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, 1] [2024-11-19 09:52:23,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 09:52:24,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:52:24,114 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:24,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:24,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1586336601, now seen corresponding path program 1 times [2024-11-19 09:52:24,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:24,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760273085] [2024-11-19 09:52:24,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:24,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:24,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:24,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760273085] [2024-11-19 09:52:24,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760273085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:52:24,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046565244] [2024-11-19 09:52:24,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:24,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:52:24,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:52:24,984 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:52:24,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 09:52:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:25,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-19 09:52:25,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:52:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:25,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:52:26,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:52:26,288 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 42 treesize of output 34 [2024-11-19 09:52:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:26,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046565244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:52:26,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:52:26,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 51 [2024-11-19 09:52:26,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964441728] [2024-11-19 09:52:26,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:52:26,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-19 09:52:26,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:26,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-19 09:52:26,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=2394, Unknown=0, NotChecked=0, Total=2652 [2024-11-19 09:52:27,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 09:52:27,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 95 transitions, 791 flow. Second operand has 52 states, 52 states have (on average 8.615384615384615) internal successors, (448), 52 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:27,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:27,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 09:52:27,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:30,685 INFO L124 PetriNetUnfolderBase]: 2447/4577 cut-off events. [2024-11-19 09:52:30,685 INFO L125 PetriNetUnfolderBase]: For 20964/20964 co-relation queries the response was YES. [2024-11-19 09:52:30,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17900 conditions, 4577 events. 2447/4577 cut-off events. For 20964/20964 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 29382 event pairs, 323 based on Foata normal form. 3/4580 useless extension candidates. Maximal degree in co-relation 13673. Up to 2555 conditions per place. [2024-11-19 09:52:30,708 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 195 selfloop transitions, 190 changer transitions 10/397 dead transitions. [2024-11-19 09:52:30,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 397 transitions, 3770 flow [2024-11-19 09:52:30,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-19 09:52:30,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-11-19 09:52:30,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 589 transitions. [2024-11-19 09:52:30,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2887254901960784 [2024-11-19 09:52:30,710 INFO L175 Difference]: Start difference. First operand has 83 places, 95 transitions, 791 flow. Second operand 51 states and 589 transitions. [2024-11-19 09:52:30,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 397 transitions, 3770 flow [2024-11-19 09:52:30,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 397 transitions, 3760 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:52:30,740 INFO L231 Difference]: Finished difference. Result has 145 places, 272 transitions, 3112 flow [2024-11-19 09:52:30,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=3112, PETRI_PLACES=145, PETRI_TRANSITIONS=272} [2024-11-19 09:52:30,740 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 105 predicate places. [2024-11-19 09:52:30,741 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 272 transitions, 3112 flow [2024-11-19 09:52:30,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 8.615384615384615) internal successors, (448), 52 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:30,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:30,741 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, 1] [2024-11-19 09:52:30,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 09:52:30,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:52:30,942 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:30,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:30,942 INFO L85 PathProgramCache]: Analyzing trace with hash -71684467, now seen corresponding path program 2 times [2024-11-19 09:52:30,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:30,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481445998] [2024-11-19 09:52:30,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:52:30,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:30,959 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:52:30,960 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:31,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:31,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:31,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481445998] [2024-11-19 09:52:31,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481445998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:52:31,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331334570] [2024-11-19 09:52:31,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:52:31,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:52:31,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:52:31,983 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:52:31,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 09:52:32,051 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:52:32,052 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:32,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-19 09:52:32,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:52:32,754 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:32,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:52:33,364 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:52:33,365 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 40 treesize of output 32 [2024-11-19 09:52:33,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:33,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331334570] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:52:33,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:52:33,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 51 [2024-11-19 09:52:33,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813253814] [2024-11-19 09:52:33,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:52:33,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-19 09:52:33,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:33,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-19 09:52:33,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2443, Unknown=0, NotChecked=0, Total=2652 [2024-11-19 09:52:34,091 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 09:52:34,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 272 transitions, 3112 flow. Second operand has 52 states, 52 states have (on average 8.615384615384615) internal successors, (448), 52 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:34,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:34,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 09:52:34,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:42,835 INFO L124 PetriNetUnfolderBase]: 2948/5555 cut-off events. [2024-11-19 09:52:42,836 INFO L125 PetriNetUnfolderBase]: For 39234/39234 co-relation queries the response was YES. [2024-11-19 09:52:42,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27239 conditions, 5555 events. 2948/5555 cut-off events. For 39234/39234 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 37675 event pairs, 224 based on Foata normal form. 5/5560 useless extension candidates. Maximal degree in co-relation 27166. Up to 2630 conditions per place. [2024-11-19 09:52:42,870 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 297 selfloop transitions, 399 changer transitions 29/727 dead transitions. [2024-11-19 09:52:42,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 727 transitions, 8017 flow [2024-11-19 09:52:42,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-19 09:52:42,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2024-11-19 09:52:42,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 966 transitions. [2024-11-19 09:52:42,873 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2945121951219512 [2024-11-19 09:52:42,873 INFO L175 Difference]: Start difference. First operand has 145 places, 272 transitions, 3112 flow. Second operand 82 states and 966 transitions. [2024-11-19 09:52:42,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 727 transitions, 8017 flow [2024-11-19 09:52:42,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 727 transitions, 7792 flow, removed 109 selfloop flow, removed 5 redundant places. [2024-11-19 09:52:42,976 INFO L231 Difference]: Finished difference. Result has 242 places, 507 transitions, 6647 flow [2024-11-19 09:52:42,976 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2939, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=6647, PETRI_PLACES=242, PETRI_TRANSITIONS=507} [2024-11-19 09:52:42,977 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 202 predicate places. [2024-11-19 09:52:42,977 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 507 transitions, 6647 flow [2024-11-19 09:52:42,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 8.615384615384615) internal successors, (448), 52 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:42,977 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:42,977 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, 1] [2024-11-19 09:52:42,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 09:52:43,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:52:43,179 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:43,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:43,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1361903431, now seen corresponding path program 3 times [2024-11-19 09:52:43,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:43,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613905128] [2024-11-19 09:52:43,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:52:43,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:43,205 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:52:43,207 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:52:43,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:43,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613905128] [2024-11-19 09:52:43,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613905128] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:52:43,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351885796] [2024-11-19 09:52:43,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:52:43,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:52:43,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:52:43,652 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:52:43,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 09:52:43,732 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:52:43,733 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:43,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-19 09:52:43,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:52:44,063 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:52:44,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:52:44,386 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:52:44,386 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 40 treesize of output 32 [2024-11-19 09:52:44,572 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:52:44,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351885796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:52:44,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:52:44,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2024-11-19 09:52:44,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957923893] [2024-11-19 09:52:44,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:52:44,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-19 09:52:44,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:44,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-19 09:52:44,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1004, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 09:52:44,592 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 09:52:44,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 507 transitions, 6647 flow. Second operand has 34 states, 34 states have (on average 8.941176470588236) internal successors, (304), 34 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:44,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:44,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 09:52:44,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:46,262 INFO L124 PetriNetUnfolderBase]: 3029/5707 cut-off events. [2024-11-19 09:52:46,262 INFO L125 PetriNetUnfolderBase]: For 58001/58001 co-relation queries the response was YES. [2024-11-19 09:52:46,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33114 conditions, 5707 events. 3029/5707 cut-off events. For 58001/58001 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 38929 event pairs, 238 based on Foata normal form. 2/5709 useless extension candidates. Maximal degree in co-relation 33020. Up to 3273 conditions per place. [2024-11-19 09:52:46,300 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 336 selfloop transitions, 329 changer transitions 5/672 dead transitions. [2024-11-19 09:52:46,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 672 transitions, 9623 flow [2024-11-19 09:52:46,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 09:52:46,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-19 09:52:46,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 266 transitions. [2024-11-19 09:52:46,305 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3325 [2024-11-19 09:52:46,305 INFO L175 Difference]: Start difference. First operand has 242 places, 507 transitions, 6647 flow. Second operand 20 states and 266 transitions. [2024-11-19 09:52:46,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 672 transitions, 9623 flow [2024-11-19 09:52:46,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 672 transitions, 9030 flow, removed 288 selfloop flow, removed 8 redundant places. [2024-11-19 09:52:46,524 INFO L231 Difference]: Finished difference. Result has 257 places, 584 transitions, 8331 flow [2024-11-19 09:52:46,525 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6146, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=8331, PETRI_PLACES=257, PETRI_TRANSITIONS=584} [2024-11-19 09:52:46,525 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 217 predicate places. [2024-11-19 09:52:46,525 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 584 transitions, 8331 flow [2024-11-19 09:52:46,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 8.941176470588236) internal successors, (304), 34 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:46,525 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:46,526 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, 1] [2024-11-19 09:52:46,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 09:52:46,729 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,SelfDestructingSolverStorable23 [2024-11-19 09:52:46,729 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:46,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:46,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1738699695, now seen corresponding path program 4 times [2024-11-19 09:52:46,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:46,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751296364] [2024-11-19 09:52:46,730 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:52:46,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:46,756 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:52:46,756 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:47,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:47,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751296364] [2024-11-19 09:52:47,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751296364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:52:47,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557408449] [2024-11-19 09:52:47,697 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:52:47,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:52:47,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:52:47,700 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:52:47,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 09:52:47,788 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:52:47,788 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:47,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-19 09:52:47,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:52:48,549 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:48,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:52:49,097 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:52:49,098 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 40 treesize of output 32 [2024-11-19 09:52:49,763 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:49,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557408449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:52:49,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:52:49,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 51 [2024-11-19 09:52:49,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20163238] [2024-11-19 09:52:49,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:52:49,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-19 09:52:49,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:49,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-19 09:52:49,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2426, Unknown=0, NotChecked=0, Total=2652 [2024-11-19 09:52:49,922 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 09:52:49,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 584 transitions, 8331 flow. Second operand has 52 states, 52 states have (on average 8.615384615384615) internal successors, (448), 52 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:49,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:49,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 09:52:49,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:57,932 INFO L124 PetriNetUnfolderBase]: 3188/6087 cut-off events. [2024-11-19 09:52:57,933 INFO L125 PetriNetUnfolderBase]: For 78089/78089 co-relation queries the response was YES. [2024-11-19 09:52:57,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38242 conditions, 6087 events. 3188/6087 cut-off events. For 78089/78089 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 42788 event pairs, 192 based on Foata normal form. 3/6090 useless extension candidates. Maximal degree in co-relation 38149. Up to 2924 conditions per place. [2024-11-19 09:52:57,983 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 349 selfloop transitions, 529 changer transitions 11/891 dead transitions. [2024-11-19 09:52:57,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 891 transitions, 12651 flow [2024-11-19 09:52:57,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-19 09:52:57,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2024-11-19 09:52:57,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 949 transitions. [2024-11-19 09:52:57,987 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3003164556962025 [2024-11-19 09:52:57,987 INFO L175 Difference]: Start difference. First operand has 257 places, 584 transitions, 8331 flow. Second operand 79 states and 949 transitions. [2024-11-19 09:52:57,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 891 transitions, 12651 flow [2024-11-19 09:52:58,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 891 transitions, 12438 flow, removed 81 selfloop flow, removed 5 redundant places. [2024-11-19 09:52:58,283 INFO L231 Difference]: Finished difference. Result has 346 places, 682 transitions, 11335 flow [2024-11-19 09:52:58,284 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8184, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=440, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=11335, PETRI_PLACES=346, PETRI_TRANSITIONS=682} [2024-11-19 09:52:58,284 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 306 predicate places. [2024-11-19 09:52:58,284 INFO L471 AbstractCegarLoop]: Abstraction has has 346 places, 682 transitions, 11335 flow [2024-11-19 09:52:58,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 8.615384615384615) internal successors, (448), 52 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:58,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:58,285 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, 1] [2024-11-19 09:52:58,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 09:52:58,488 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,SelfDestructingSolverStorable24 [2024-11-19 09:52:58,488 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:52:58,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:58,489 INFO L85 PathProgramCache]: Analyzing trace with hash -768498885, now seen corresponding path program 5 times [2024-11-19 09:52:58,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:58,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957136351] [2024-11-19 09:52:58,489 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:52:58,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:58,502 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 09:52:58,502 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:59,114 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:59,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:59,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957136351] [2024-11-19 09:52:59,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957136351] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:52:59,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931102953] [2024-11-19 09:52:59,115 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:52:59,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:52:59,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:52:59,116 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:52:59,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 09:52:59,186 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 09:52:59,186 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:59,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-19 09:52:59,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:52:59,768 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-19 09:52:59,768 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 24 treesize of output 10 [2024-11-19 09:52:59,939 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:59,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:53:00,541 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:53:00,542 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 40 treesize of output 32 [2024-11-19 09:53:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:53:01,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931102953] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:53:01,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:53:01,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 50 [2024-11-19 09:53:01,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452458610] [2024-11-19 09:53:01,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:53:01,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-19 09:53:01,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:01,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-19 09:53:01,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2336, Unknown=0, NotChecked=0, Total=2550 [2024-11-19 09:53:01,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 09:53:01,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 682 transitions, 11335 flow. Second operand has 51 states, 51 states have (on average 8.647058823529411) internal successors, (441), 51 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:01,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:01,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 09:53:01,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:05,716 INFO L124 PetriNetUnfolderBase]: 3227/6203 cut-off events. [2024-11-19 09:53:05,716 INFO L125 PetriNetUnfolderBase]: For 104535/104535 co-relation queries the response was YES. [2024-11-19 09:53:05,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43589 conditions, 6203 events. 3227/6203 cut-off events. For 104535/104535 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 44131 event pairs, 214 based on Foata normal form. 3/6206 useless extension candidates. Maximal degree in co-relation 43474. Up to 3223 conditions per place. [2024-11-19 09:53:05,773 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 342 selfloop transitions, 500 changer transitions 10/854 dead transitions. [2024-11-19 09:53:05,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 854 transitions, 14320 flow [2024-11-19 09:53:05,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-19 09:53:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-19 09:53:05,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 567 transitions. [2024-11-19 09:53:05,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3081521739130435 [2024-11-19 09:53:05,775 INFO L175 Difference]: Start difference. First operand has 346 places, 682 transitions, 11335 flow. Second operand 46 states and 567 transitions. [2024-11-19 09:53:05,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 854 transitions, 14320 flow [2024-11-19 09:53:06,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 854 transitions, 13802 flow, removed 150 selfloop flow, removed 31 redundant places. [2024-11-19 09:53:06,357 INFO L231 Difference]: Finished difference. Result has 365 places, 703 transitions, 12740 flow [2024-11-19 09:53:06,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10829, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=481, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=12740, PETRI_PLACES=365, PETRI_TRANSITIONS=703} [2024-11-19 09:53:06,363 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 325 predicate places. [2024-11-19 09:53:06,363 INFO L471 AbstractCegarLoop]: Abstraction has has 365 places, 703 transitions, 12740 flow [2024-11-19 09:53:06,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 8.647058823529411) internal successors, (441), 51 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:06,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:06,364 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, 1] [2024-11-19 09:53:06,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 09:53:06,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-19 09:53:06,565 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:53:06,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:06,565 INFO L85 PathProgramCache]: Analyzing trace with hash -401089923, now seen corresponding path program 6 times [2024-11-19 09:53:06,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:06,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877714427] [2024-11-19 09:53:06,566 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:53:06,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:06,593 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 09:53:06,593 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:53:07,368 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:53:07,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:07,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877714427] [2024-11-19 09:53:07,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877714427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:53:07,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911558401] [2024-11-19 09:53:07,370 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:53:07,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:53:07,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:53:07,372 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:53:07,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 09:53:07,517 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 09:53:07,517 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:53:07,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-19 09:53:07,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:53:07,957 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 11 treesize of output 3 [2024-11-19 09:53:08,210 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:53:08,210 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:53:08,981 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:53:08,981 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 32 treesize of output 24 [2024-11-19 09:53:09,409 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:53:09,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911558401] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:53:09,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:53:09,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 16] total 50 [2024-11-19 09:53:09,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251098167] [2024-11-19 09:53:09,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:53:09,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-19 09:53:09,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:09,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-19 09:53:09,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=2298, Unknown=0, NotChecked=0, Total=2550 [2024-11-19 09:53:09,509 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 09:53:09,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 703 transitions, 12740 flow. Second operand has 51 states, 51 states have (on average 8.647058823529411) internal successors, (441), 51 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:09,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:09,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 09:53:09,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:18,587 INFO L124 PetriNetUnfolderBase]: 3705/7241 cut-off events. [2024-11-19 09:53:18,588 INFO L125 PetriNetUnfolderBase]: For 155854/155854 co-relation queries the response was YES. [2024-11-19 09:53:18,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54703 conditions, 7241 events. 3705/7241 cut-off events. For 155854/155854 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 54200 event pairs, 244 based on Foata normal form. 9/7250 useless extension candidates. Maximal degree in co-relation 54549. Up to 2857 conditions per place. [2024-11-19 09:53:18,651 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 504 selfloop transitions, 574 changer transitions 33/1113 dead transitions. [2024-11-19 09:53:18,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 1113 transitions, 20093 flow [2024-11-19 09:53:18,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-19 09:53:18,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2024-11-19 09:53:18,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 984 transitions. [2024-11-19 09:53:18,655 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3075 [2024-11-19 09:53:18,655 INFO L175 Difference]: Start difference. First operand has 365 places, 703 transitions, 12740 flow. Second operand 80 states and 984 transitions. [2024-11-19 09:53:18,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 1113 transitions, 20093 flow [2024-11-19 09:53:19,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 1113 transitions, 19747 flow, removed 61 selfloop flow, removed 26 redundant places. [2024-11-19 09:53:19,229 INFO L231 Difference]: Finished difference. Result has 447 places, 854 transitions, 17236 flow [2024-11-19 09:53:19,230 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12424, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=437, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=17236, PETRI_PLACES=447, PETRI_TRANSITIONS=854} [2024-11-19 09:53:19,230 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 407 predicate places. [2024-11-19 09:53:19,230 INFO L471 AbstractCegarLoop]: Abstraction has has 447 places, 854 transitions, 17236 flow [2024-11-19 09:53:19,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 8.647058823529411) internal successors, (441), 51 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:19,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:19,230 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, 1] [2024-11-19 09:53:19,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 09:53:19,434 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,SelfDestructingSolverStorable26 [2024-11-19 09:53:19,434 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:53:19,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:19,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1240597955, now seen corresponding path program 7 times [2024-11-19 09:53:19,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:19,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972185070] [2024-11-19 09:53:19,435 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:53:19,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:53:20,037 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:53:20,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:20,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972185070] [2024-11-19 09:53:20,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972185070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:53:20,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562201529] [2024-11-19 09:53:20,038 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:53:20,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:53:20,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:53:20,039 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:53:20,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 09:53:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:53:20,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-19 09:53:20,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:53:20,847 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:53:20,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:53:21,447 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:53:21,447 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 43 treesize of output 35 [2024-11-19 09:53:21,906 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:53:21,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562201529] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:53:21,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:53:21,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 16] total 48 [2024-11-19 09:53:21,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041982570] [2024-11-19 09:53:21,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:53:21,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-19 09:53:21,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:21,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-19 09:53:21,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2120, Unknown=0, NotChecked=0, Total=2352 [2024-11-19 09:53:22,029 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 09:53:22,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 854 transitions, 17236 flow. Second operand has 49 states, 49 states have (on average 8.714285714285714) internal successors, (427), 49 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:22,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:22,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 09:53:22,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:26,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-19 09:53:32,407 INFO L124 PetriNetUnfolderBase]: 3690/7174 cut-off events. [2024-11-19 09:53:32,408 INFO L125 PetriNetUnfolderBase]: For 212418/212418 co-relation queries the response was YES. [2024-11-19 09:53:32,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60564 conditions, 7174 events. 3690/7174 cut-off events. For 212418/212418 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 53309 event pairs, 237 based on Foata normal form. 4/7178 useless extension candidates. Maximal degree in co-relation 60369. Up to 3778 conditions per place. [2024-11-19 09:53:32,483 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 412 selfloop transitions, 582 changer transitions 32/1028 dead transitions. [2024-11-19 09:53:32,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 1028 transitions, 20570 flow [2024-11-19 09:53:32,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-19 09:53:32,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2024-11-19 09:53:32,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 685 transitions. [2024-11-19 09:53:32,485 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30580357142857145 [2024-11-19 09:53:32,485 INFO L175 Difference]: Start difference. First operand has 447 places, 854 transitions, 17236 flow. Second operand 56 states and 685 transitions. [2024-11-19 09:53:32,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 1028 transitions, 20570 flow [2024-11-19 09:53:33,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 1028 transitions, 19842 flow, removed 267 selfloop flow, removed 30 redundant places. [2024-11-19 09:53:33,658 INFO L231 Difference]: Finished difference. Result has 472 places, 852 transitions, 18337 flow [2024-11-19 09:53:33,659 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=16545, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=853, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=574, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=18337, PETRI_PLACES=472, PETRI_TRANSITIONS=852} [2024-11-19 09:53:33,659 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 432 predicate places. [2024-11-19 09:53:33,659 INFO L471 AbstractCegarLoop]: Abstraction has has 472 places, 852 transitions, 18337 flow [2024-11-19 09:53:33,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 8.714285714285714) internal successors, (427), 49 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:33,660 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:33,660 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, 1] [2024-11-19 09:53:33,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 09:53:33,863 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,SelfDestructingSolverStorable27 [2024-11-19 09:53:33,864 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-19 09:53:33,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:33,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1330442405, now seen corresponding path program 8 times [2024-11-19 09:53:33,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:33,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172587135] [2024-11-19 09:53:33,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:53:33,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:33,887 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:53:33,887 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:53:34,829 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:53:34,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:34,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172587135] [2024-11-19 09:53:34,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172587135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:53:34,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107529397] [2024-11-19 09:53:34,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:53:34,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:53:34,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:53:34,832 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) [2024-11-19 09:53:34,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 09:53:34,957 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:53:34,958 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:53:34,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-19 09:53:34,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:53:35,616 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:53:35,617 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:53:36,203 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:53:36,204 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 40 treesize of output 32 [2024-11-19 09:53:36,892 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:53:36,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107529397] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:53:36,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:53:36,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 51 [2024-11-19 09:53:36,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458191925] [2024-11-19 09:53:36,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:53:36,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-19 09:53:36,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:36,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-19 09:53:36,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=2415, Unknown=0, NotChecked=0, Total=2652 [2024-11-19 09:53:37,093 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 09:53:37,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 852 transitions, 18337 flow. Second operand has 52 states, 52 states have (on average 8.615384615384615) internal successors, (448), 52 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:37,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:37,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 09:53:37,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand