./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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-min-le-max.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 dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:49:38,635 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:49:38,698 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:49:38,704 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:49:38,704 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:49:38,726 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:49:38,726 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:49:38,727 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:49:38,727 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:49:38,728 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:49:38,729 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:49:38,729 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:49:38,730 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:49:38,730 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:49:38,730 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:49:38,730 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:49:38,731 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:49:38,731 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:49:38,731 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:49:38,734 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:49:38,734 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:49:38,734 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:49:38,734 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:49:38,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:49:38,735 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:49:38,735 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:49:38,735 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:49:38,735 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:49:38,735 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:49:38,736 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:49:38,736 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:49:38,736 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:49:38,736 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:49:38,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:49:38,737 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:49:38,737 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:49:38,737 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:49:38,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:49:38,737 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:49:38,737 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:49:38,738 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:49:38,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:49:38,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af [2024-11-22 21:49:38,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:49:38,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:49:38,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:49:38,948 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:49:38,948 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:49:38,949 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2024-11-22 21:49:40,226 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:49:40,370 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:49:40,370 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2024-11-22 21:49:40,376 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c68fb52ab/4139a10a7c474ee1bb8971f2026c2cd5/FLAG1bd2c284c [2024-11-22 21:49:40,391 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c68fb52ab/4139a10a7c474ee1bb8971f2026c2cd5 [2024-11-22 21:49:40,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:49:40,393 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:49:40,394 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:49:40,394 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:49:40,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:49:40,401 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:49:40" (1/1) ... [2024-11-22 21:49:40,402 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6926f54c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:40, skipping insertion in model container [2024-11-22 21:49:40,402 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:49:40" (1/1) ... [2024-11-22 21:49:40,417 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:49:40,563 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 21:49:40,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:49:40,624 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:49:40,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:49:40,672 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:49:40,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:40 WrapperNode [2024-11-22 21:49:40,673 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:49:40,673 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:49:40,673 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:49:40,674 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:49:40,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:40" (1/1) ... [2024-11-22 21:49:40,691 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:40" (1/1) ... [2024-11-22 21:49:40,709 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 90 [2024-11-22 21:49:40,710 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:49:40,710 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:49:40,710 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:49:40,710 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:49:40,719 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:40" (1/1) ... [2024-11-22 21:49:40,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:40" (1/1) ... [2024-11-22 21:49:40,721 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:40" (1/1) ... [2024-11-22 21:49:40,738 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 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]. [2024-11-22 21:49:40,738 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:40" (1/1) ... [2024-11-22 21:49:40,739 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:40" (1/1) ... [2024-11-22 21:49:40,744 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:40" (1/1) ... [2024-11-22 21:49:40,747 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:40" (1/1) ... [2024-11-22 21:49:40,748 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:40" (1/1) ... [2024-11-22 21:49:40,749 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:40" (1/1) ... [2024-11-22 21:49:40,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:49:40,751 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:49:40,751 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:49:40,751 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:49:40,752 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:40" (1/1) ... [2024-11-22 21:49:40,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:49:40,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:49:40,787 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) [2024-11-22 21:49:40,789 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 [2024-11-22 21:49:40,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:49:40,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 21:49:40,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 21:49:40,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 21:49:40,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 21:49:40,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-22 21:49:40,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-22 21:49:40,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:49:40,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 21:49:40,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 21:49:40,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 21:49:40,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 21:49:40,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 21:49:40,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 21:49:40,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:49:40,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:49:40,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 21:49:40,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 21:49:40,824 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:49:40,898 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:49:40,900 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:49:41,079 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:49:41,080 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:49:41,224 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:49:41,224 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-22 21:49:41,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:49:41 BoogieIcfgContainer [2024-11-22 21:49:41,224 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:49:41,228 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:49:41,228 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:49:41,234 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:49:41,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:49:40" (1/3) ... [2024-11-22 21:49:41,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64cb31d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:49:41, skipping insertion in model container [2024-11-22 21:49:41,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:40" (2/3) ... [2024-11-22 21:49:41,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64cb31d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:49:41, skipping insertion in model container [2024-11-22 21:49:41,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:49:41" (3/3) ... [2024-11-22 21:49:41,236 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2024-11-22 21:49:41,264 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:49:41,264 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-22 21:49:41,264 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:49:41,321 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-22 21:49:41,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 50 transitions, 121 flow [2024-11-22 21:49:41,374 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2024-11-22 21:49:41,374 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 21:49:41,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 3/47 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 110 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-11-22 21:49:41,377 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 50 transitions, 121 flow [2024-11-22 21:49:41,380 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 46 transitions, 110 flow [2024-11-22 21:49:41,390 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:49:41,396 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;@a097e5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:49:41,396 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-11-22 21:49:41,399 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:49:41,399 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-22 21:49:41,399 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:49:41,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:41,400 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-22 21:49:41,400 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-22 21:49:41,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:41,404 INFO L85 PathProgramCache]: Analyzing trace with hash 444699, now seen corresponding path program 1 times [2024-11-22 21:49:41,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:41,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399320916] [2024-11-22 21:49:41,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:41,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:41,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:41,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:41,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399320916] [2024-11-22 21:49:41,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399320916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:49:41,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:49:41,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:49:41,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512729120] [2024-11-22 21:49:41,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:49:41,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:49:41,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:41,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:49:41,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:49:41,682 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-11-22 21:49:41,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2024-11-22 21:49:41,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:41,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-11-22 21:49:41,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:41,901 INFO L124 PetriNetUnfolderBase]: 465/794 cut-off events. [2024-11-22 21:49:41,901 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-22 21:49:41,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1614 conditions, 794 events. 465/794 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4020 event pairs, 388 based on Foata normal form. 1/586 useless extension candidates. Maximal degree in co-relation 1502. Up to 712 conditions per place. [2024-11-22 21:49:41,909 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 27 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-11-22 21:49:41,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 39 transitions, 154 flow [2024-11-22 21:49:41,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:49:41,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:49:41,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-22 21:49:41,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5133333333333333 [2024-11-22 21:49:41,920 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 110 flow. Second operand 3 states and 77 transitions. [2024-11-22 21:49:41,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 39 transitions, 154 flow [2024-11-22 21:49:41,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 142 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-22 21:49:41,925 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 88 flow [2024-11-22 21:49:41,926 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2024-11-22 21:49:41,929 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2024-11-22 21:49:41,929 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 88 flow [2024-11-22 21:49:41,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2024-11-22 21:49:41,929 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:41,930 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-22 21:49:41,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:49:41,930 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-22 21:49:41,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:41,931 INFO L85 PathProgramCache]: Analyzing trace with hash 444700, now seen corresponding path program 1 times [2024-11-22 21:49:41,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:41,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541488698] [2024-11-22 21:49:41,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:41,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:42,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:42,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:42,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541488698] [2024-11-22 21:49:42,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541488698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:49:42,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:49:42,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:49:42,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740375119] [2024-11-22 21:49:42,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:49:42,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:49:42,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:42,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:49:42,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:49:42,171 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-11-22 21:49:42,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-22 21:49:42,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:42,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-11-22 21:49:42,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:42,301 INFO L124 PetriNetUnfolderBase]: 465/793 cut-off events. [2024-11-22 21:49:42,302 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:49:42,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1555 conditions, 793 events. 465/793 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4032 event pairs, 388 based on Foata normal form. 0/585 useless extension candidates. Maximal degree in co-relation 1542. Up to 712 conditions per place. [2024-11-22 21:49:42,309 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 25 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2024-11-22 21:49:42,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 144 flow [2024-11-22 21:49:42,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:49:42,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:49:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-11-22 21:49:42,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-11-22 21:49:42,312 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 88 flow. Second operand 4 states and 86 transitions. [2024-11-22 21:49:42,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 144 flow [2024-11-22 21:49:42,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 140 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:49:42,314 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 90 flow [2024-11-22 21:49:42,314 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2024-11-22 21:49:42,314 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2024-11-22 21:49:42,316 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 90 flow [2024-11-22 21:49:42,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-22 21:49:42,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:42,316 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-22 21:49:42,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:49:42,316 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-22 21:49:42,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:42,317 INFO L85 PathProgramCache]: Analyzing trace with hash 444697, now seen corresponding path program 1 times [2024-11-22 21:49:42,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:42,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172687096] [2024-11-22 21:49:42,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:42,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:42,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:42,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:42,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172687096] [2024-11-22 21:49:42,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172687096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:49:42,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:49:42,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:49:42,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472667432] [2024-11-22 21:49:42,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:49:42,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:49:42,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:42,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:49:42,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:49:42,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-11-22 21:49:42,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-11-22 21:49:42,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:42,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-11-22 21:49:42,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:42,498 INFO L124 PetriNetUnfolderBase]: 328/562 cut-off events. [2024-11-22 21:49:42,498 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:49:42,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1107 conditions, 562 events. 328/562 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2552 event pairs, 263 based on Foata normal form. 0/457 useless extension candidates. Maximal degree in co-relation 1092. Up to 504 conditions per place. [2024-11-22 21:49:42,502 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 25 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2024-11-22 21:49:42,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 136 flow [2024-11-22 21:49:42,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:49:42,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:49:42,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-11-22 21:49:42,504 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.395 [2024-11-22 21:49:42,504 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 90 flow. Second operand 4 states and 79 transitions. [2024-11-22 21:49:42,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 136 flow [2024-11-22 21:49:42,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:49:42,507 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 78 flow [2024-11-22 21:49:42,507 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-11-22 21:49:42,508 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -15 predicate places. [2024-11-22 21:49:42,508 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 78 flow [2024-11-22 21:49:42,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-11-22 21:49:42,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:42,508 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-22 21:49:42,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 21:49:42,508 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-22 21:49:42,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:42,509 INFO L85 PathProgramCache]: Analyzing trace with hash 444698, now seen corresponding path program 1 times [2024-11-22 21:49:42,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:42,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027845839] [2024-11-22 21:49:42,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:42,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:42,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:42,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:42,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027845839] [2024-11-22 21:49:42,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027845839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:49:42,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:49:42,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:49:42,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556581213] [2024-11-22 21:49:42,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:49:42,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:49:42,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:42,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:49:42,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:49:42,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-11-22 21:49:42,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-11-22 21:49:42,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:42,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-11-22 21:49:42,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:42,631 INFO L124 PetriNetUnfolderBase]: 328/564 cut-off events. [2024-11-22 21:49:42,631 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:49:42,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1109 conditions, 564 events. 328/564 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2543 event pairs, 263 based on Foata normal form. 1/461 useless extension candidates. Maximal degree in co-relation 1092. Up to 508 conditions per place. [2024-11-22 21:49:42,633 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 27 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2024-11-22 21:49:42,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 140 flow [2024-11-22 21:49:42,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:49:42,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:49:42,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-11-22 21:49:42,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-22 21:49:42,636 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 78 flow. Second operand 3 states and 75 transitions. [2024-11-22 21:49:42,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 140 flow [2024-11-22 21:49:42,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 137 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:49:42,638 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 87 flow [2024-11-22 21:49:42,638 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-11-22 21:49:42,638 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -14 predicate places. [2024-11-22 21:49:42,638 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 87 flow [2024-11-22 21:49:42,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-11-22 21:49:42,639 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:42,639 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-22 21:49:42,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:49:42,639 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-22 21:49:42,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:42,640 INFO L85 PathProgramCache]: Analyzing trace with hash 427370870, now seen corresponding path program 1 times [2024-11-22 21:49:42,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:42,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214792398] [2024-11-22 21:49:42,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:42,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:42,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:42,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:42,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214792398] [2024-11-22 21:49:42,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214792398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:49:42,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751924682] [2024-11-22 21:49:42,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:42,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:49:42,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:49:42,729 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) [2024-11-22 21:49:42,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:49:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:42,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 21:49:42,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:49:42,816 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 [2024-11-22 21:49:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:42,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:49:42,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:42,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751924682] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 21:49:42,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 21:49:42,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2024-11-22 21:49:42,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636464761] [2024-11-22 21:49:42,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:49:42,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:49:42,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:42,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:49:42,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:49:42,899 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-11-22 21:49:42,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 87 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-11-22 21:49:42,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:42,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-11-22 21:49:42,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:43,004 INFO L124 PetriNetUnfolderBase]: 328/562 cut-off events. [2024-11-22 21:49:43,004 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:49:43,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1112 conditions, 562 events. 328/562 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2547 event pairs, 263 based on Foata normal form. 0/458 useless extension candidates. Maximal degree in co-relation 1099. Up to 504 conditions per place. [2024-11-22 21:49:43,008 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 26 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2024-11-22 21:49:43,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 143 flow [2024-11-22 21:49:43,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:49:43,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:49:43,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-11-22 21:49:43,011 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.384 [2024-11-22 21:49:43,011 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 87 flow. Second operand 5 states and 96 transitions. [2024-11-22 21:49:43,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 143 flow [2024-11-22 21:49:43,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 141 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:49:43,012 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 87 flow [2024-11-22 21:49:43,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=87, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-11-22 21:49:43,013 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -13 predicate places. [2024-11-22 21:49:43,013 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 87 flow [2024-11-22 21:49:43,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-11-22 21:49:43,014 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:43,014 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:49:43,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 21:49:43,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:49:43,219 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-22 21:49:43,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:43,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1023945850, now seen corresponding path program 1 times [2024-11-22 21:49:43,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:43,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295159459] [2024-11-22 21:49:43,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:43,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:43,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:49:43,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:43,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295159459] [2024-11-22 21:49:43,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295159459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:49:43,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:49:43,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:49:43,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271303912] [2024-11-22 21:49:43,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:49:43,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:49:43,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:43,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:49:43,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:49:43,292 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-11-22 21:49:43,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 87 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) [2024-11-22 21:49:43,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:43,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-11-22 21:49:43,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:43,392 INFO L124 PetriNetUnfolderBase]: 484/804 cut-off events. [2024-11-22 21:49:43,392 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-22 21:49:43,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1588 conditions, 804 events. 484/804 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3825 event pairs, 191 based on Foata normal form. 0/685 useless extension candidates. Maximal degree in co-relation 1564. Up to 535 conditions per place. [2024-11-22 21:49:43,397 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 38 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-11-22 21:49:43,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 201 flow [2024-11-22 21:49:43,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:49:43,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:49:43,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-11-22 21:49:43,399 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-11-22 21:49:43,400 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 87 flow. Second operand 4 states and 94 transitions. [2024-11-22 21:49:43,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 201 flow [2024-11-22 21:49:43,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:49:43,402 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 105 flow [2024-11-22 21:49:43,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-11-22 21:49:43,404 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2024-11-22 21:49:43,404 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 105 flow [2024-11-22 21:49:43,405 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) [2024-11-22 21:49:43,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:43,405 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:49:43,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 21:49:43,406 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-22 21:49:43,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:43,406 INFO L85 PathProgramCache]: Analyzing trace with hash -486894880, now seen corresponding path program 1 times [2024-11-22 21:49:43,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:43,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873001727] [2024-11-22 21:49:43,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:43,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:43,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:49:43,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:43,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873001727] [2024-11-22 21:49:43,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873001727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:49:43,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:49:43,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:49:43,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258905391] [2024-11-22 21:49:43,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:49:43,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:49:43,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:43,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:49:43,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:49:43,493 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-11-22 21:49:43,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2024-11-22 21:49:43,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:43,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-11-22 21:49:43,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:43,605 INFO L124 PetriNetUnfolderBase]: 714/1153 cut-off events. [2024-11-22 21:49:43,606 INFO L125 PetriNetUnfolderBase]: For 306/306 co-relation queries the response was YES. [2024-11-22 21:49:43,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2622 conditions, 1153 events. 714/1153 cut-off events. For 306/306 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5626 event pairs, 329 based on Foata normal form. 0/1064 useless extension candidates. Maximal degree in co-relation 2598. Up to 767 conditions per place. [2024-11-22 21:49:43,611 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 41 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2024-11-22 21:49:43,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 50 transitions, 242 flow [2024-11-22 21:49:43,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:49:43,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:49:43,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-22 21:49:43,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.465 [2024-11-22 21:49:43,612 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 105 flow. Second operand 4 states and 93 transitions. [2024-11-22 21:49:43,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 50 transitions, 242 flow [2024-11-22 21:49:43,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 234 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:49:43,613 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 121 flow [2024-11-22 21:49:43,613 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-11-22 21:49:43,614 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2024-11-22 21:49:43,614 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 121 flow [2024-11-22 21:49:43,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2024-11-22 21:49:43,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:43,614 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:49:43,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 21:49:43,614 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-22 21:49:43,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:43,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1512566009, now seen corresponding path program 1 times [2024-11-22 21:49:43,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:43,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834560745] [2024-11-22 21:49:43,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:43,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:43,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:43,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:43,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834560745] [2024-11-22 21:49:43,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834560745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:49:43,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928109936] [2024-11-22 21:49:43,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:43,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:49:43,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:49:43,674 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) [2024-11-22 21:49:43,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 21:49:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:43,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 21:49:43,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:49:43,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:43,789 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:49:43,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:43,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928109936] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:49:43,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:49:43,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-22 21:49:43,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112115084] [2024-11-22 21:49:43,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:49:43,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 21:49:43,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:43,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 21:49:43,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-22 21:49:43,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-11-22 21:49:43,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 121 flow. Second operand has 14 states, 14 states have (on average 16.142857142857142) internal successors, (226), 14 states have internal predecessors, (226), 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) [2024-11-22 21:49:43,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:43,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-11-22 21:49:43,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:44,094 INFO L124 PetriNetUnfolderBase]: 1475/2316 cut-off events. [2024-11-22 21:49:44,094 INFO L125 PetriNetUnfolderBase]: For 873/873 co-relation queries the response was YES. [2024-11-22 21:49:44,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5832 conditions, 2316 events. 1475/2316 cut-off events. For 873/873 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 11989 event pairs, 868 based on Foata normal form. 44/2303 useless extension candidates. Maximal degree in co-relation 3499. Up to 1317 conditions per place. [2024-11-22 21:49:44,104 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 79 selfloop transitions, 10 changer transitions 0/93 dead transitions. [2024-11-22 21:49:44,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 93 transitions, 483 flow [2024-11-22 21:49:44,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 21:49:44,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 21:49:44,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-11-22 21:49:44,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-22 21:49:44,106 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 121 flow. Second operand 8 states and 192 transitions. [2024-11-22 21:49:44,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 93 transitions, 483 flow [2024-11-22 21:49:44,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 93 transitions, 467 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:49:44,108 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 195 flow [2024-11-22 21:49:44,108 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=195, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-11-22 21:49:44,109 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2024-11-22 21:49:44,109 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 195 flow [2024-11-22 21:49:44,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.142857142857142) internal successors, (226), 14 states have internal predecessors, (226), 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) [2024-11-22 21:49:44,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:44,109 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:49:44,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 21:49:44,310 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,SelfDestructingSolverStorable7 [2024-11-22 21:49:44,311 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-22 21:49:44,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:44,311 INFO L85 PathProgramCache]: Analyzing trace with hash -980287402, now seen corresponding path program 1 times [2024-11-22 21:49:44,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:44,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257911172] [2024-11-22 21:49:44,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:44,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:44,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:44,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:44,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257911172] [2024-11-22 21:49:44,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257911172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:49:44,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554799624] [2024-11-22 21:49:44,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:44,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:49:44,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:49:44,371 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) [2024-11-22 21:49:44,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 21:49:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:44,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 21:49:44,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:49:44,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:44,488 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:49:44,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:44,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554799624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:49:44,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:49:44,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-22 21:49:44,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930828158] [2024-11-22 21:49:44,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:49:44,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 21:49:44,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:44,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 21:49:44,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-22 21:49:44,589 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-11-22 21:49:44,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 195 flow. Second operand has 14 states, 14 states have (on average 16.285714285714285) internal successors, (228), 14 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:49:44,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:44,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-11-22 21:49:44,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:44,815 INFO L124 PetriNetUnfolderBase]: 1290/1978 cut-off events. [2024-11-22 21:49:44,815 INFO L125 PetriNetUnfolderBase]: For 1833/1883 co-relation queries the response was YES. [2024-11-22 21:49:44,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5459 conditions, 1978 events. 1290/1978 cut-off events. For 1833/1883 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 9737 event pairs, 801 based on Foata normal form. 32/1958 useless extension candidates. Maximal degree in co-relation 3576. Up to 1319 conditions per place. [2024-11-22 21:49:44,826 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 71 selfloop transitions, 10 changer transitions 0/85 dead transitions. [2024-11-22 21:49:44,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 85 transitions, 507 flow [2024-11-22 21:49:44,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 21:49:44,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 21:49:44,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-11-22 21:49:44,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4675 [2024-11-22 21:49:44,827 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 195 flow. Second operand 8 states and 187 transitions. [2024-11-22 21:49:44,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 85 transitions, 507 flow [2024-11-22 21:49:44,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 85 transitions, 493 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-22 21:49:44,833 INFO L231 Difference]: Finished difference. Result has 63 places, 48 transitions, 240 flow [2024-11-22 21:49:44,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=240, PETRI_PLACES=63, PETRI_TRANSITIONS=48} [2024-11-22 21:49:44,834 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2024-11-22 21:49:44,834 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 48 transitions, 240 flow [2024-11-22 21:49:44,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.285714285714285) internal successors, (228), 14 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:49:44,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:44,834 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:49:44,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 21:49:45,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:49:45,036 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-22 21:49:45,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:45,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1577234531, now seen corresponding path program 2 times [2024-11-22 21:49:45,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:45,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731099979] [2024-11-22 21:49:45,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:49:45,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:45,062 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:49:45,063 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:49:45,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 21:49:45,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:45,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731099979] [2024-11-22 21:49:45,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731099979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:49:45,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759175659] [2024-11-22 21:49:45,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:49:45,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:49:45,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:49:45,388 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) [2024-11-22 21:49:45,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 21:49:45,434 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:49:45,434 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:49:45,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 21:49:45,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:49:45,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:45,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:49:45,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-22 21:49:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:45,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759175659] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:49:45,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:49:45,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-11-22 21:49:45,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420312321] [2024-11-22 21:49:45,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:49:45,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 21:49:45,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:45,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 21:49:45,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-11-22 21:49:45,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-11-22 21:49:45,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 48 transitions, 240 flow. Second operand has 20 states, 20 states have (on average 14.15) internal successors, (283), 20 states have internal predecessors, (283), 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) [2024-11-22 21:49:45,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:45,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-11-22 21:49:45,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:46,556 INFO L124 PetriNetUnfolderBase]: 1515/2300 cut-off events. [2024-11-22 21:49:46,557 INFO L125 PetriNetUnfolderBase]: For 2420/2461 co-relation queries the response was YES. [2024-11-22 21:49:46,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6914 conditions, 2300 events. 1515/2300 cut-off events. For 2420/2461 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 11462 event pairs, 240 based on Foata normal form. 88/2349 useless extension candidates. Maximal degree in co-relation 4770. Up to 455 conditions per place. [2024-11-22 21:49:46,568 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 133 selfloop transitions, 18 changer transitions 0/155 dead transitions. [2024-11-22 21:49:46,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 155 transitions, 940 flow [2024-11-22 21:49:46,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 21:49:46,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 21:49:46,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 307 transitions. [2024-11-22 21:49:46,569 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43857142857142856 [2024-11-22 21:49:46,569 INFO L175 Difference]: Start difference. First operand has 63 places, 48 transitions, 240 flow. Second operand 14 states and 307 transitions. [2024-11-22 21:49:46,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 155 transitions, 940 flow [2024-11-22 21:49:46,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 155 transitions, 917 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-11-22 21:49:46,577 INFO L231 Difference]: Finished difference. Result has 72 places, 51 transitions, 284 flow [2024-11-22 21:49:46,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=284, PETRI_PLACES=72, PETRI_TRANSITIONS=51} [2024-11-22 21:49:46,578 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 19 predicate places. [2024-11-22 21:49:46,578 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 51 transitions, 284 flow [2024-11-22 21:49:46,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.15) internal successors, (283), 20 states have internal predecessors, (283), 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) [2024-11-22 21:49:46,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:46,579 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:49:46,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 21:49:46,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:49:46,783 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-22 21:49:46,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:46,783 INFO L85 PathProgramCache]: Analyzing trace with hash 495630002, now seen corresponding path program 2 times [2024-11-22 21:49:46,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:46,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118816632] [2024-11-22 21:49:46,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:49:46,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:46,794 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:49:46,794 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:49:46,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:49:46,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:46,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118816632] [2024-11-22 21:49:46,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118816632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:49:46,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494475260] [2024-11-22 21:49:46,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:49:46,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:49:46,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:49:46,944 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) [2024-11-22 21:49:46,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 21:49:46,995 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:49:46,996 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:49:46,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 21:49:46,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:49:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:47,107 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:49:47,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-22 21:49:47,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:47,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494475260] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:49:47,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:49:47,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-11-22 21:49:47,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355897765] [2024-11-22 21:49:47,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:49:47,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 21:49:47,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:47,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 21:49:47,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2024-11-22 21:49:47,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-11-22 21:49:47,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 51 transitions, 284 flow. Second operand has 20 states, 20 states have (on average 14.5) internal successors, (290), 20 states have internal predecessors, (290), 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) [2024-11-22 21:49:47,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:47,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-11-22 21:49:47,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:48,327 INFO L124 PetriNetUnfolderBase]: 1734/2584 cut-off events. [2024-11-22 21:49:48,327 INFO L125 PetriNetUnfolderBase]: For 4934/5042 co-relation queries the response was YES. [2024-11-22 21:49:48,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8464 conditions, 2584 events. 1734/2584 cut-off events. For 4934/5042 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12556 event pairs, 260 based on Foata normal form. 100/2644 useless extension candidates. Maximal degree in co-relation 6164. Up to 485 conditions per place. [2024-11-22 21:49:48,345 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 131 selfloop transitions, 18 changer transitions 0/155 dead transitions. [2024-11-22 21:49:48,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 155 transitions, 1082 flow [2024-11-22 21:49:48,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 21:49:48,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 21:49:48,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 295 transitions. [2024-11-22 21:49:48,347 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42142857142857143 [2024-11-22 21:49:48,347 INFO L175 Difference]: Start difference. First operand has 72 places, 51 transitions, 284 flow. Second operand 14 states and 295 transitions. [2024-11-22 21:49:48,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 155 transitions, 1082 flow [2024-11-22 21:49:48,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 155 transitions, 872 flow, removed 43 selfloop flow, removed 12 redundant places. [2024-11-22 21:49:48,361 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 283 flow [2024-11-22 21:49:48,362 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=283, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2024-11-22 21:49:48,362 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 21 predicate places. [2024-11-22 21:49:48,362 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 283 flow [2024-11-22 21:49:48,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.5) internal successors, (290), 20 states have internal predecessors, (290), 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) [2024-11-22 21:49:48,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:48,362 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] [2024-11-22 21:49:48,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 21:49:48,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-22 21:49:48,563 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-22 21:49:48,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:48,564 INFO L85 PathProgramCache]: Analyzing trace with hash 622764794, now seen corresponding path program 1 times [2024-11-22 21:49:48,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:48,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491606997] [2024-11-22 21:49:48,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:48,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:48,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:49:48,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:48,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491606997] [2024-11-22 21:49:48,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491606997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:49:48,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:49:48,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:49:48,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278082483] [2024-11-22 21:49:48,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:49:48,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:49:48,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:48,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:49:48,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:49:48,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-11-22 21:49:48,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-22 21:49:48,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:48,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-11-22 21:49:48,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:48,739 INFO L124 PetriNetUnfolderBase]: 1256/2070 cut-off events. [2024-11-22 21:49:48,740 INFO L125 PetriNetUnfolderBase]: For 3345/3392 co-relation queries the response was YES. [2024-11-22 21:49:48,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6617 conditions, 2070 events. 1256/2070 cut-off events. For 3345/3392 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10879 event pairs, 516 based on Foata normal form. 82/2097 useless extension candidates. Maximal degree in co-relation 4886. Up to 1347 conditions per place. [2024-11-22 21:49:48,752 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 56 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2024-11-22 21:49:48,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 71 transitions, 511 flow [2024-11-22 21:49:48,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:49:48,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:49:48,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-11-22 21:49:48,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-11-22 21:49:48,753 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 283 flow. Second operand 4 states and 98 transitions. [2024-11-22 21:49:48,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 71 transitions, 511 flow [2024-11-22 21:49:48,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 71 transitions, 413 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-11-22 21:49:48,758 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 230 flow [2024-11-22 21:49:48,758 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2024-11-22 21:49:48,759 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2024-11-22 21:49:48,759 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 230 flow [2024-11-22 21:49:48,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-22 21:49:48,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:48,759 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, 1, 1] [2024-11-22 21:49:48,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 21:49:48,760 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-22 21:49:48,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:48,760 INFO L85 PathProgramCache]: Analyzing trace with hash 42264155, now seen corresponding path program 1 times [2024-11-22 21:49:48,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:48,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848262287] [2024-11-22 21:49:48,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:48,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:49:48,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:48,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848262287] [2024-11-22 21:49:48,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848262287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:49:48,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:49:48,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:49:48,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689059780] [2024-11-22 21:49:48,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:49:48,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:49:48,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:48,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:49:48,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:49:48,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-11-22 21:49:48,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:49:48,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:48,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-11-22 21:49:48,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:48,947 INFO L124 PetriNetUnfolderBase]: 1174/1993 cut-off events. [2024-11-22 21:49:48,947 INFO L125 PetriNetUnfolderBase]: For 1842/1904 co-relation queries the response was YES. [2024-11-22 21:49:48,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5598 conditions, 1993 events. 1174/1993 cut-off events. For 1842/1904 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 11236 event pairs, 673 based on Foata normal form. 82/2033 useless extension candidates. Maximal degree in co-relation 4213. Up to 1285 conditions per place. [2024-11-22 21:49:48,955 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 51 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2024-11-22 21:49:48,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 66 transitions, 403 flow [2024-11-22 21:49:48,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:49:48,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:49:48,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-11-22 21:49:48,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.485 [2024-11-22 21:49:48,956 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 230 flow. Second operand 4 states and 97 transitions. [2024-11-22 21:49:48,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 66 transitions, 403 flow [2024-11-22 21:49:48,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 383 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:49:48,959 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 221 flow [2024-11-22 21:49:48,959 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=221, PETRI_PLACES=66, PETRI_TRANSITIONS=50} [2024-11-22 21:49:48,960 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2024-11-22 21:49:48,960 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 221 flow [2024-11-22 21:49:48,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:49:48,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:48,960 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, 1, 1, 1, 1, 1] [2024-11-22 21:49:48,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 21:49:48,961 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-22 21:49:48,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:48,961 INFO L85 PathProgramCache]: Analyzing trace with hash 201321497, now seen corresponding path program 1 times [2024-11-22 21:49:48,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:48,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973339388] [2024-11-22 21:49:48,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:48,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:49,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:49:49,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:49,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973339388] [2024-11-22 21:49:49,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973339388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:49:49,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298957877] [2024-11-22 21:49:49,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:49,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:49:49,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:49:49,252 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) [2024-11-22 21:49:49,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 21:49:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:49,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 21:49:49,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:49:49,471 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 21:49:49,471 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 81 treesize of output 57 [2024-11-22 21:49:49,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2024-11-22 21:49:49,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2024-11-22 21:49:49,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:49:49,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:49:49,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 135 [2024-11-22 21:49:49,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 131 [2024-11-22 21:49:50,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:49:50,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298957877] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:49:50,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:49:50,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 13 [2024-11-22 21:49:50,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043944083] [2024-11-22 21:49:50,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:49:50,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 21:49:50,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:50,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 21:49:50,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-22 21:49:50,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-11-22 21:49:50,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 50 transitions, 221 flow. Second operand has 13 states, 13 states have (on average 18.923076923076923) internal successors, (246), 13 states have internal predecessors, (246), 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) [2024-11-22 21:49:50,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:50,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-11-22 21:49:50,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:50,643 INFO L124 PetriNetUnfolderBase]: 1659/2566 cut-off events. [2024-11-22 21:49:50,643 INFO L125 PetriNetUnfolderBase]: For 2449/2540 co-relation queries the response was YES. [2024-11-22 21:49:50,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7039 conditions, 2566 events. 1659/2566 cut-off events. For 2449/2540 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12413 event pairs, 183 based on Foata normal form. 2/2554 useless extension candidates. Maximal degree in co-relation 5301. Up to 1046 conditions per place. [2024-11-22 21:49:50,649 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 0 selfloop transitions, 0 changer transitions 115/115 dead transitions. [2024-11-22 21:49:50,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 115 transitions, 710 flow [2024-11-22 21:49:50,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 21:49:50,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 21:49:50,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 207 transitions. [2024-11-22 21:49:50,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.414 [2024-11-22 21:49:50,651 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 221 flow. Second operand 10 states and 207 transitions. [2024-11-22 21:49:50,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 115 transitions, 710 flow [2024-11-22 21:49:50,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 115 transitions, 674 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:49:50,654 INFO L231 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2024-11-22 21:49:50,655 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2024-11-22 21:49:50,655 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 17 predicate places. [2024-11-22 21:49:50,655 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2024-11-22 21:49:50,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.923076923076923) internal successors, (246), 13 states have internal predecessors, (246), 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) [2024-11-22 21:49:50,658 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 27 remaining) [2024-11-22 21:49:50,658 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 27 remaining) [2024-11-22 21:49:50,658 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 27 remaining) [2024-11-22 21:49:50,658 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 27 remaining) [2024-11-22 21:49:50,659 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 27 remaining) [2024-11-22 21:49:50,659 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 27 remaining) [2024-11-22 21:49:50,659 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 27 remaining) [2024-11-22 21:49:50,659 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 27 remaining) [2024-11-22 21:49:50,659 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 27 remaining) [2024-11-22 21:49:50,659 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 27 remaining) [2024-11-22 21:49:50,659 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 27 remaining) [2024-11-22 21:49:50,659 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 27 remaining) [2024-11-22 21:49:50,659 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 27 remaining) [2024-11-22 21:49:50,659 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 27 remaining) [2024-11-22 21:49:50,660 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (12 of 27 remaining) [2024-11-22 21:49:50,660 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (11 of 27 remaining) [2024-11-22 21:49:50,660 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 27 remaining) [2024-11-22 21:49:50,660 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 27 remaining) [2024-11-22 21:49:50,660 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 27 remaining) [2024-11-22 21:49:50,660 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 27 remaining) [2024-11-22 21:49:50,660 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 27 remaining) [2024-11-22 21:49:50,660 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 27 remaining) [2024-11-22 21:49:50,660 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 27 remaining) [2024-11-22 21:49:50,661 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 27 remaining) [2024-11-22 21:49:50,661 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 27 remaining) [2024-11-22 21:49:50,661 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 27 remaining) [2024-11-22 21:49:50,661 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 27 remaining) [2024-11-22 21:49:50,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 21:49:50,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:49:50,862 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:49:50,867 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-22 21:49:50,867 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 21:49:50,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 09:49:50 BasicIcfg [2024-11-22 21:49:50,870 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 21:49:50,870 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 21:49:50,870 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 21:49:50,870 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 21:49:50,871 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:49:41" (3/4) ... [2024-11-22 21:49:50,872 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 21:49:50,874 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-22 21:49:50,874 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-22 21:49:50,874 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-22 21:49:50,880 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 92 nodes and edges [2024-11-22 21:49:50,880 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2024-11-22 21:49:50,881 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-22 21:49:50,881 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-22 21:49:50,950 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 21:49:50,950 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 21:49:50,950 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 21:49:50,951 INFO L158 Benchmark]: Toolchain (without parser) took 10557.50ms. Allocated memory was 182.5MB in the beginning and 394.3MB in the end (delta: 211.8MB). Free memory was 113.0MB in the beginning and 195.8MB in the end (delta: -82.8MB). Peak memory consumption was 130.6MB. Max. memory is 16.1GB. [2024-11-22 21:49:50,951 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 21:49:50,951 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.59ms. Allocated memory is still 182.5MB. Free memory was 112.9MB in the beginning and 151.5MB in the end (delta: -38.7MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2024-11-22 21:49:50,951 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.49ms. Allocated memory is still 182.5MB. Free memory was 151.5MB in the beginning and 149.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 21:49:50,951 INFO L158 Benchmark]: Boogie Preprocessor took 40.10ms. Allocated memory is still 182.5MB. Free memory was 149.5MB in the beginning and 147.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 21:49:50,952 INFO L158 Benchmark]: RCFGBuilder took 473.42ms. Allocated memory is still 182.5MB. Free memory was 147.4MB in the beginning and 104.5MB in the end (delta: 42.9MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2024-11-22 21:49:50,952 INFO L158 Benchmark]: TraceAbstraction took 9642.06ms. Allocated memory was 182.5MB in the beginning and 394.3MB in the end (delta: 211.8MB). Free memory was 103.8MB in the beginning and 200.6MB in the end (delta: -96.8MB). Peak memory consumption was 117.3MB. Max. memory is 16.1GB. [2024-11-22 21:49:50,952 INFO L158 Benchmark]: Witness Printer took 80.29ms. Allocated memory is still 394.3MB. Free memory was 200.6MB in the beginning and 195.8MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 21:49:50,953 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 278.59ms. Allocated memory is still 182.5MB. Free memory was 112.9MB in the beginning and 151.5MB in the end (delta: -38.7MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.49ms. Allocated memory is still 182.5MB. Free memory was 151.5MB in the beginning and 149.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.10ms. Allocated memory is still 182.5MB. Free memory was 149.5MB in the beginning and 147.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 473.42ms. Allocated memory is still 182.5MB. Free memory was 147.4MB in the beginning and 104.5MB in the end (delta: 42.9MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 9642.06ms. Allocated memory was 182.5MB in the beginning and 394.3MB in the end (delta: 211.8MB). Free memory was 103.8MB in the beginning and 200.6MB in the end (delta: -96.8MB). Peak memory consumption was 117.3MB. Max. memory is 16.1GB. * Witness Printer took 80.29ms. Allocated memory is still 394.3MB. Free memory was 200.6MB in the beginning and 195.8MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 78]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 73 locations, 27 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.5s, OverallIterations: 14, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1207 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1091 mSDsluCounter, 541 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 526 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4775 IncrementalHoareTripleChecker+Invalid, 4805 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 15 mSDtfsCounter, 4775 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 258 GetRequests, 140 SyntacticMatches, 4 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=284occurred in iteration=10, InterpolantAutomatonStates: 89, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 275 NumberOfCodeBlocks, 275 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 344 ConstructedInterpolants, 10 QuantifiedInterpolants, 4018 SizeOfPredicates, 36 NumberOfNonLiveVariables, 794 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 26 InterpolantComputations, 9 PerfectInterpolantSequences, 33/71 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-22 21:49:50,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE