./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e0114971c55bb3ac56cba53b1f36a4abfb42729c079f90200b21654f0e6a33fd --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:44:36,589 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:44:36,673 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:44:36,682 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:44:36,683 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:44:36,718 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:44:36,719 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:44:36,719 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:44:36,720 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:44:36,723 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:44:36,724 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:44:36,724 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:44:36,725 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:44:36,726 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:44:36,726 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:44:36,727 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:44:36,727 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:44:36,727 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:44:36,727 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:44:36,728 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:44:36,728 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:44:36,728 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:44:36,729 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:44:36,729 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:44:36,729 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:44:36,729 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:44:36,730 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:44:36,730 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:44:36,730 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:44:36,731 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:44:36,731 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:44:36,731 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:44:36,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:44:36,732 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:44:36,732 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:44:36,732 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:44:36,732 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:44:36,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:44:36,733 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:44:36,733 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:44:36,733 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:44:36,733 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:44:36,734 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:44:36,734 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0114971c55bb3ac56cba53b1f36a4abfb42729c079f90200b21654f0e6a33fd [2024-06-27 16:44:36,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:44:36,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:44:36,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:44:36,947 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:44:36,947 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:44:36,948 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c [2024-06-27 16:44:38,045 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:44:38,230 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:44:38,231 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c [2024-06-27 16:44:38,239 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fc4a54ee/c5280432081e455d892abfc8bca70c92/FLAG5ecffe690 [2024-06-27 16:44:38,249 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fc4a54ee/c5280432081e455d892abfc8bca70c92 [2024-06-27 16:44:38,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:44:38,251 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:44:38,252 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:44:38,252 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:44:38,263 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:44:38,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:44:38" (1/1) ... [2024-06-27 16:44:38,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fbe4277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:38, skipping insertion in model container [2024-06-27 16:44:38,267 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:44:38" (1/1) ... [2024-06-27 16:44:38,286 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:44:38,425 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c[2358,2371] [2024-06-27 16:44:38,429 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:44:38,436 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:44:38,453 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c[2358,2371] [2024-06-27 16:44:38,454 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:44:38,468 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:44:38,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:38 WrapperNode [2024-06-27 16:44:38,469 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:44:38,470 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:44:38,470 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:44:38,471 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:44:38,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:38" (1/1) ... [2024-06-27 16:44:38,498 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:38" (1/1) ... [2024-06-27 16:44:38,512 INFO L138 Inliner]: procedures = 19, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 51 [2024-06-27 16:44:38,513 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:44:38,513 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:44:38,514 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:44:38,514 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:44:38,522 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:38" (1/1) ... [2024-06-27 16:44:38,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:38" (1/1) ... [2024-06-27 16:44:38,524 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:38" (1/1) ... [2024-06-27 16:44:38,535 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 16:44:38,536 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:38" (1/1) ... [2024-06-27 16:44:38,536 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:38" (1/1) ... [2024-06-27 16:44:38,539 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:38" (1/1) ... [2024-06-27 16:44:38,542 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:38" (1/1) ... [2024-06-27 16:44:38,543 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:38" (1/1) ... [2024-06-27 16:44:38,543 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:38" (1/1) ... [2024-06-27 16:44:38,545 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:44:38,546 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:44:38,546 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:44:38,546 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:44:38,547 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:38" (1/1) ... [2024-06-27 16:44:38,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:44:38,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:44:38,573 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) [2024-06-27 16:44:38,575 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 [2024-06-27 16:44:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:44:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 16:44:38,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 16:44:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 16:44:38,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 16:44:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:44:38,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 16:44:38,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 16:44:38,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:44:38,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:44:38,619 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:44:38,700 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:44:38,701 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:44:38,839 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:44:38,839 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:44:38,997 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:44:38,998 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-27 16:44:38,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:44:38 BoogieIcfgContainer [2024-06-27 16:44:38,998 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:44:39,000 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:44:39,000 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:44:39,003 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:44:39,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:44:38" (1/3) ... [2024-06-27 16:44:39,004 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9f807b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:44:39, skipping insertion in model container [2024-06-27 16:44:39,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:38" (2/3) ... [2024-06-27 16:44:39,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9f807b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:44:39, skipping insertion in model container [2024-06-27 16:44:39,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:44:38" (3/3) ... [2024-06-27 16:44:39,006 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled.wvr.c [2024-06-27 16:44:39,014 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:44:39,025 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:44:39,027 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:44:39,027 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:44:39,067 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-27 16:44:39,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 66 flow [2024-06-27 16:44:39,116 INFO L124 PetriNetUnfolderBase]: 2/24 cut-off events. [2024-06-27 16:44:39,116 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-27 16:44:39,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 24 events. 2/24 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 19. Up to 2 conditions per place. [2024-06-27 16:44:39,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 26 transitions, 66 flow [2024-06-27 16:44:39,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 23 transitions, 58 flow [2024-06-27 16:44:39,131 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:44:39,137 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@25bf9a23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:44:39,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-06-27 16:44:39,147 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:44:39,147 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2024-06-27 16:44:39,147 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-27 16:44:39,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:44:39,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:44:39,148 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:44:39,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:44:39,154 INFO L85 PathProgramCache]: Analyzing trace with hash -432880745, now seen corresponding path program 1 times [2024-06-27 16:44:39,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:44:39,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413500043] [2024-06-27 16:44:39,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:44:39,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:44:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:44:39,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:44:39,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:44:39,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413500043] [2024-06-27 16:44:39,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413500043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:44:39,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:44:39,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:44:39,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996489365] [2024-06-27 16:44:39,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:44:39,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:44:39,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:44:39,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:44:39,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:44:39,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 26 [2024-06-27 16:44:39,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2024-06-27 16:44:39,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:44:39,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 26 [2024-06-27 16:44:39,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:44:39,614 INFO L124 PetriNetUnfolderBase]: 161/293 cut-off events. [2024-06-27 16:44:39,615 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-27 16:44:39,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 293 events. 161/293 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1103 event pairs, 32 based on Foata normal form. 1/288 useless extension candidates. Maximal degree in co-relation 526. Up to 242 conditions per place. [2024-06-27 16:44:39,620 INFO L140 encePairwiseOnDemand]: 22/26 looper letters, 23 selfloop transitions, 3 changer transitions 1/32 dead transitions. [2024-06-27 16:44:39,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 32 transitions, 139 flow [2024-06-27 16:44:39,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:44:39,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:44:39,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-06-27 16:44:39,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2024-06-27 16:44:39,638 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 58 flow. Second operand 3 states and 49 transitions. [2024-06-27 16:44:39,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 32 transitions, 139 flow [2024-06-27 16:44:39,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 32 transitions, 125 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 16:44:39,644 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 69 flow [2024-06-27 16:44:39,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2024-06-27 16:44:39,650 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2024-06-27 16:44:39,650 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 69 flow [2024-06-27 16:44:39,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2024-06-27 16:44:39,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:44:39,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:44:39,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:44:39,652 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:44:39,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:44:39,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1824084614, now seen corresponding path program 1 times [2024-06-27 16:44:39,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:44:39,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516586498] [2024-06-27 16:44:39,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:44:39,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:44:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:44:39,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:44:39,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:44:39,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516586498] [2024-06-27 16:44:39,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516586498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:44:39,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:44:39,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:44:39,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106347363] [2024-06-27 16:44:39,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:44:39,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:44:39,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:44:39,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:44:39,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:44:39,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 26 [2024-06-27 16:44:39,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-06-27 16:44:39,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:44:39,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 26 [2024-06-27 16:44:39,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:44:40,005 INFO L124 PetriNetUnfolderBase]: 199/361 cut-off events. [2024-06-27 16:44:40,006 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-06-27 16:44:40,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 361 events. 199/361 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1471 event pairs, 32 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 200. Up to 202 conditions per place. [2024-06-27 16:44:40,014 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 35 selfloop transitions, 9 changer transitions 3/53 dead transitions. [2024-06-27 16:44:40,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 53 transitions, 229 flow [2024-06-27 16:44:40,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:44:40,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:44:40,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-06-27 16:44:40,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6307692307692307 [2024-06-27 16:44:40,019 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 69 flow. Second operand 5 states and 82 transitions. [2024-06-27 16:44:40,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 53 transitions, 229 flow [2024-06-27 16:44:40,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 53 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:44:40,039 INFO L231 Difference]: Finished difference. Result has 33 places, 32 transitions, 123 flow [2024-06-27 16:44:40,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=33, PETRI_TRANSITIONS=32} [2024-06-27 16:44:40,040 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 5 predicate places. [2024-06-27 16:44:40,040 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 32 transitions, 123 flow [2024-06-27 16:44:40,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-06-27 16:44:40,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:44:40,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:44:40,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:44:40,041 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:44:40,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:44:40,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1200034976, now seen corresponding path program 2 times [2024-06-27 16:44:40,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:44:40,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310085286] [2024-06-27 16:44:40,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:44:40,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:44:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:44:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:44:40,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:44:40,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310085286] [2024-06-27 16:44:40,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310085286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:44:40,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:44:40,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:44:40,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921830575] [2024-06-27 16:44:40,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:44:40,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:44:40,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:44:40,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:44:40,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:44:40,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 26 [2024-06-27 16:44:40,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 32 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-06-27 16:44:40,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:44:40,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 26 [2024-06-27 16:44:40,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:44:40,271 INFO L124 PetriNetUnfolderBase]: 173/334 cut-off events. [2024-06-27 16:44:40,271 INFO L125 PetriNetUnfolderBase]: For 220/224 co-relation queries the response was YES. [2024-06-27 16:44:40,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 334 events. 173/334 cut-off events. For 220/224 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1335 event pairs, 11 based on Foata normal form. 21/349 useless extension candidates. Maximal degree in co-relation 278. Up to 132 conditions per place. [2024-06-27 16:44:40,275 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 38 selfloop transitions, 12 changer transitions 3/59 dead transitions. [2024-06-27 16:44:40,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 59 transitions, 325 flow [2024-06-27 16:44:40,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:44:40,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:44:40,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-06-27 16:44:40,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6384615384615384 [2024-06-27 16:44:40,279 INFO L175 Difference]: Start difference. First operand has 33 places, 32 transitions, 123 flow. Second operand 5 states and 83 transitions. [2024-06-27 16:44:40,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 59 transitions, 325 flow [2024-06-27 16:44:40,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 59 transitions, 325 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 16:44:40,287 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 209 flow [2024-06-27 16:44:40,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=209, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2024-06-27 16:44:40,287 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 13 predicate places. [2024-06-27 16:44:40,288 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 209 flow [2024-06-27 16:44:40,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-06-27 16:44:40,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:44:40,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:44:40,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 16:44:40,288 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:44:40,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:44:40,289 INFO L85 PathProgramCache]: Analyzing trace with hash -492675535, now seen corresponding path program 1 times [2024-06-27 16:44:40,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:44:40,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742195041] [2024-06-27 16:44:40,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:44:40,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:44:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:44:40,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:44:40,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:44:40,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742195041] [2024-06-27 16:44:40,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742195041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:44:40,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:44:40,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:44:40,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103392073] [2024-06-27 16:44:40,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:44:40,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:44:40,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:44:40,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:44:40,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:44:40,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 26 [2024-06-27 16:44:40,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:44:40,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:44:40,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 26 [2024-06-27 16:44:40,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:44:40,561 INFO L124 PetriNetUnfolderBase]: 178/345 cut-off events. [2024-06-27 16:44:40,561 INFO L125 PetriNetUnfolderBase]: For 773/779 co-relation queries the response was YES. [2024-06-27 16:44:40,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1193 conditions, 345 events. 178/345 cut-off events. For 773/779 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1428 event pairs, 23 based on Foata normal form. 7/343 useless extension candidates. Maximal degree in co-relation 435. Up to 215 conditions per place. [2024-06-27 16:44:40,565 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 42 selfloop transitions, 8 changer transitions 4/60 dead transitions. [2024-06-27 16:44:40,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 60 transitions, 411 flow [2024-06-27 16:44:40,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:44:40,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:44:40,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-06-27 16:44:40,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-06-27 16:44:40,569 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 209 flow. Second operand 5 states and 80 transitions. [2024-06-27 16:44:40,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 60 transitions, 411 flow [2024-06-27 16:44:40,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 60 transitions, 407 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 16:44:40,577 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 256 flow [2024-06-27 16:44:40,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=256, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-06-27 16:44:40,580 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 19 predicate places. [2024-06-27 16:44:40,580 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 256 flow [2024-06-27 16:44:40,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:44:40,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:44:40,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:44:40,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 16:44:40,581 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:44:40,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:44:40,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1886012113, now seen corresponding path program 2 times [2024-06-27 16:44:40,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:44:40,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677399569] [2024-06-27 16:44:40,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:44:40,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:44:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:44:40,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:44:40,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:44:40,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677399569] [2024-06-27 16:44:40,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677399569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:44:40,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:44:40,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:44:40,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748103626] [2024-06-27 16:44:40,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:44:40,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:44:40,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:44:40,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:44:40,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:44:40,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 26 [2024-06-27 16:44:40,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:44:40,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:44:40,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 26 [2024-06-27 16:44:40,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:44:40,792 INFO L124 PetriNetUnfolderBase]: 159/318 cut-off events. [2024-06-27 16:44:40,792 INFO L125 PetriNetUnfolderBase]: For 892/900 co-relation queries the response was YES. [2024-06-27 16:44:40,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1134 conditions, 318 events. 159/318 cut-off events. For 892/900 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1178 event pairs, 24 based on Foata normal form. 18/333 useless extension candidates. Maximal degree in co-relation 837. Up to 149 conditions per place. [2024-06-27 16:44:40,795 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 41 selfloop transitions, 12 changer transitions 2/61 dead transitions. [2024-06-27 16:44:40,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 61 transitions, 466 flow [2024-06-27 16:44:40,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:44:40,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:44:40,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-06-27 16:44:40,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-27 16:44:40,797 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 256 flow. Second operand 5 states and 78 transitions. [2024-06-27 16:44:40,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 61 transitions, 466 flow [2024-06-27 16:44:40,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 61 transitions, 450 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 16:44:40,801 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 319 flow [2024-06-27 16:44:40,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=319, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2024-06-27 16:44:40,802 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 25 predicate places. [2024-06-27 16:44:40,802 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 319 flow [2024-06-27 16:44:40,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:44:40,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:44:40,803 INFO L208 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] [2024-06-27 16:44:40,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 16:44:40,803 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:44:40,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:44:40,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1630888200, now seen corresponding path program 1 times [2024-06-27 16:44:40,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:44:40,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493147601] [2024-06-27 16:44:40,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:44:40,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:44:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:44:41,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:44:41,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:44:41,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493147601] [2024-06-27 16:44:41,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493147601] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:44:41,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605313690] [2024-06-27 16:44:41,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:44:41,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:44:41,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:44:41,017 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) [2024-06-27 16:44:41,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 16:44:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:44:41,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2024-06-27 16:44:41,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:44:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:44:41,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:44:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:44:41,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605313690] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:44:41,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:44:41,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-06-27 16:44:41,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490124608] [2024-06-27 16:44:41,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:44:41,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:44:41,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:44:41,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:44:41,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:44:41,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 26 [2024-06-27 16:44:41,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 319 flow. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:44:41,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:44:41,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 26 [2024-06-27 16:44:41,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:44:41,409 INFO L124 PetriNetUnfolderBase]: 164/318 cut-off events. [2024-06-27 16:44:41,409 INFO L125 PetriNetUnfolderBase]: For 1082/1100 co-relation queries the response was YES. [2024-06-27 16:44:41,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 318 events. 164/318 cut-off events. For 1082/1100 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1146 event pairs, 37 based on Foata normal form. 3/308 useless extension candidates. Maximal degree in co-relation 941. Up to 104 conditions per place. [2024-06-27 16:44:41,411 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 0 selfloop transitions, 0 changer transitions 61/61 dead transitions. [2024-06-27 16:44:41,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 61 transitions, 539 flow [2024-06-27 16:44:41,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:44:41,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:44:41,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2024-06-27 16:44:41,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 16:44:41,413 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 319 flow. Second operand 6 states and 76 transitions. [2024-06-27 16:44:41,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 61 transitions, 539 flow [2024-06-27 16:44:41,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 516 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-06-27 16:44:41,418 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2024-06-27 16:44:41,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2024-06-27 16:44:41,419 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 27 predicate places. [2024-06-27 16:44:41,419 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2024-06-27 16:44:41,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:44:41,422 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-06-27 16:44:41,422 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-06-27 16:44:41,422 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-06-27 16:44:41,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-27 16:44:41,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-06-27 16:44:41,624 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-06-27 16:44:41,627 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 16:44:41,627 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 16:44:41,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 04:44:41 BasicIcfg [2024-06-27 16:44:41,631 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 16:44:41,631 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-06-27 16:44:41,631 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-06-27 16:44:41,631 INFO L274 PluginConnector]: Witness Printer initialized [2024-06-27 16:44:41,632 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:44:38" (3/4) ... [2024-06-27 16:44:41,633 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-06-27 16:44:41,636 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-06-27 16:44:41,636 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-06-27 16:44:41,639 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 49 nodes and edges [2024-06-27 16:44:41,640 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-06-27 16:44:41,640 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-06-27 16:44:41,641 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-06-27 16:44:41,719 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-06-27 16:44:41,720 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-06-27 16:44:41,720 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-06-27 16:44:41,720 INFO L158 Benchmark]: Toolchain (without parser) took 3469.03ms. Allocated memory was 153.1MB in the beginning and 234.9MB in the end (delta: 81.8MB). Free memory was 98.7MB in the beginning and 127.2MB in the end (delta: -28.5MB). Peak memory consumption was 53.7MB. Max. memory is 16.1GB. [2024-06-27 16:44:41,721 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 153.1MB. Free memory is still 113.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 16:44:41,721 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.26ms. Allocated memory is still 153.1MB. Free memory was 98.7MB in the beginning and 86.6MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-06-27 16:44:41,721 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.84ms. Allocated memory is still 153.1MB. Free memory was 86.6MB in the beginning and 85.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 16:44:41,721 INFO L158 Benchmark]: Boogie Preprocessor took 31.73ms. Allocated memory is still 153.1MB. Free memory was 85.0MB in the beginning and 82.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 16:44:41,722 INFO L158 Benchmark]: RCFGBuilder took 452.47ms. Allocated memory is still 153.1MB. Free memory was 82.9MB in the beginning and 118.4MB in the end (delta: -35.5MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2024-06-27 16:44:41,724 INFO L158 Benchmark]: TraceAbstraction took 2630.85ms. Allocated memory was 153.1MB in the beginning and 234.9MB in the end (delta: 81.8MB). Free memory was 117.9MB in the beginning and 131.4MB in the end (delta: -13.5MB). Peak memory consumption was 68.3MB. Max. memory is 16.1GB. [2024-06-27 16:44:41,725 INFO L158 Benchmark]: Witness Printer took 88.69ms. Allocated memory is still 234.9MB. Free memory was 131.4MB in the beginning and 127.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 16:44:41,727 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 153.1MB. Free memory is still 113.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 217.26ms. Allocated memory is still 153.1MB. Free memory was 98.7MB in the beginning and 86.6MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.84ms. Allocated memory is still 153.1MB. Free memory was 86.6MB in the beginning and 85.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.73ms. Allocated memory is still 153.1MB. Free memory was 85.0MB in the beginning and 82.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 452.47ms. Allocated memory is still 153.1MB. Free memory was 82.9MB in the beginning and 118.4MB in the end (delta: -35.5MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. * TraceAbstraction took 2630.85ms. Allocated memory was 153.1MB in the beginning and 234.9MB in the end (delta: 81.8MB). Free memory was 117.9MB in the beginning and 131.4MB in the end (delta: -13.5MB). Peak memory consumption was 68.3MB. Max. memory is 16.1GB. * Witness Printer took 88.69ms. Allocated memory is still 234.9MB. Free memory was 131.4MB in the beginning and 127.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 87]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 41 locations, 3 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: 2.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 103 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 88 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 434 IncrementalHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 4 mSDtfsCounter, 434 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 42 SyntacticMatches, 9 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=319occurred in iteration=5, InterpolantAutomatonStates: 29, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 146 ConstructedInterpolants, 0 QuantifiedInterpolants, 1282 SizeOfPredicates, 3 NumberOfNonLiveVariables, 97 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 4/10 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 16:44:41,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE