./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-match-trans.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/chl-match-trans.wvr.yml/witness.yml --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/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/chl-match-trans.wvr.c ./goblint.2024-06-19_11-23-25.files/protection/chl-match-trans.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:02:01,549 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:02:01,611 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:02:01,615 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:02:01,616 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:02:01,685 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:02:01,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:02:01,686 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:02:01,686 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:02:01,689 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:02:01,690 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:02:01,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:02:01,691 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:02:01,692 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:02:01,692 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:02:01,692 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:02:01,692 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:02:01,693 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:02:01,693 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:02:01,693 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:02:01,694 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:02:01,694 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:02:01,694 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:02:01,695 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:02:01,695 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:02:01,695 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:02:01,695 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:02:01,695 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:02:01,696 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:02:01,696 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:02:01,697 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:02:01,697 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:02:01,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:02:01,697 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:02:01,698 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:02:01,698 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:02:01,698 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:02:01,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:02:01,698 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:02:01,699 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:02:01,699 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:02:01,699 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:02:01,699 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:02:01,699 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:02:01,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:02:01,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:02:01,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:02:01,934 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:02:01,934 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:02:01,935 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-match-trans.wvr.c [2024-06-27 18:02:03,125 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:02:03,347 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:02:03,349 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-trans.wvr.c [2024-06-27 18:02:03,360 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83259fb1d/1e7af891120045cf87b29209b3f202eb/FLAGffa6a48a9 [2024-06-27 18:02:03,372 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83259fb1d/1e7af891120045cf87b29209b3f202eb [2024-06-27 18:02:03,374 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:02:03,375 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:02:03,378 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/chl-match-trans.wvr.yml/witness.yml [2024-06-27 18:02:03,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:02:03,471 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:02:03,472 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:02:03,472 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:02:03,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:02:03,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:02:03" (1/2) ... [2024-06-27 18:02:03,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@756bf5b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:02:03, skipping insertion in model container [2024-06-27 18:02:03,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:02:03" (1/2) ... [2024-06-27 18:02:03,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2f10e4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:02:03, skipping insertion in model container [2024-06-27 18:02:03,480 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:02:03" (2/2) ... [2024-06-27 18:02:03,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@756bf5b3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:03, skipping insertion in model container [2024-06-27 18:02:03,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:02:03" (2/2) ... [2024-06-27 18:02:03,480 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:02:03,512 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:02:03,513 INFO L97 edCorrectnessWitness]: Location invariant before [L81-L81] ((! multithreaded || ((result_11 == -1 || result_11 == 0) || result_11 == 1)) && (! multithreaded || ((result_10 == -1 || result_10 == 0) || result_10 == 1))) && (! multithreaded || ((result_9 == -1 || result_9 == 0) || result_9 == 1)) [2024-06-27 18:02:03,513 INFO L97 edCorrectnessWitness]: Location invariant before [L83-L83] ((! multithreaded || ((result_11 == -1 || result_11 == 0) || result_11 == 1)) && (! multithreaded || ((result_10 == -1 || result_10 == 0) || result_10 == 1))) && (! multithreaded || ((result_9 == -1 || result_9 == 0) || result_9 == 1)) [2024-06-27 18:02:03,513 INFO L97 edCorrectnessWitness]: Location invariant before [L82-L82] ((! multithreaded || ((result_11 == -1 || result_11 == 0) || result_11 == 1)) && (! multithreaded || ((result_10 == -1 || result_10 == 0) || result_10 == 1))) && (! multithreaded || ((result_9 == -1 || result_9 == 0) || result_9 == 1)) [2024-06-27 18:02:03,513 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:02:03,513 INFO L106 edCorrectnessWitness]: ghost_update [L80-L80] multithreaded = 1; [2024-06-27 18:02:03,529 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:02:03,654 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/chl-match-trans.wvr.c[2993,3006] [2024-06-27 18:02:03,660 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:02:03,667 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:02:03,734 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/chl-match-trans.wvr.c[2993,3006] [2024-06-27 18:02:03,742 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:02:03,761 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:02:03,766 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:03 WrapperNode [2024-06-27 18:02:03,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:02:03,768 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:02:03,768 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:02:03,768 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:02:03,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:03" (1/1) ... [2024-06-27 18:02:03,799 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:03" (1/1) ... [2024-06-27 18:02:03,834 INFO L138 Inliner]: procedures = 22, calls = 18, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 201 [2024-06-27 18:02:03,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:02:03,836 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:02:03,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:02:03,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:02:03,853 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:03" (1/1) ... [2024-06-27 18:02:03,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:03" (1/1) ... [2024-06-27 18:02:03,866 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:03" (1/1) ... [2024-06-27 18:02:03,886 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 18:02:03,891 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:03" (1/1) ... [2024-06-27 18:02:03,891 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:03" (1/1) ... [2024-06-27 18:02:03,901 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:03" (1/1) ... [2024-06-27 18:02:03,904 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:03" (1/1) ... [2024-06-27 18:02:03,914 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:03" (1/1) ... [2024-06-27 18:02:03,915 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:03" (1/1) ... [2024-06-27 18:02:03,917 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:02:03,918 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:02:03,922 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:02:03,923 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:02:03,923 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:03" (1/1) ... [2024-06-27 18:02:03,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:02:03,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:02:03,951 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 18:02:03,957 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 18:02:03,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:02:03,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 18:02:03,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 18:02:03,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 18:02:03,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 18:02:03,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 18:02:03,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 18:02:03,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:02:03,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:02:03,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:02:03,989 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 18:02:04,073 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:02:04,076 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:02:04,373 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:02:04,373 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:02:04,693 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:02:04,694 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:02:04,694 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:02:04 BoogieIcfgContainer [2024-06-27 18:02:04,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:02:04,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:02:04,697 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:02:04,699 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:02:04,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:02:03" (1/4) ... [2024-06-27 18:02:04,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4411faad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:02:04, skipping insertion in model container [2024-06-27 18:02:04,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:02:03" (2/4) ... [2024-06-27 18:02:04,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4411faad and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:02:04, skipping insertion in model container [2024-06-27 18:02:04,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:03" (3/4) ... [2024-06-27 18:02:04,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4411faad and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:02:04, skipping insertion in model container [2024-06-27 18:02:04,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:02:04" (4/4) ... [2024-06-27 18:02:04,703 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-trans.wvr.c [2024-06-27 18:02:04,718 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:02:04,718 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 18:02:04,719 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:02:04,767 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-27 18:02:04,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 26 transitions, 73 flow [2024-06-27 18:02:04,816 INFO L124 PetriNetUnfolderBase]: 0/23 cut-off events. [2024-06-27 18:02:04,817 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 18:02:04,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 23 events. 0/23 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-27 18:02:04,819 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 26 transitions, 73 flow [2024-06-27 18:02:04,821 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 22 transitions, 62 flow [2024-06-27 18:02:04,827 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:02:04,833 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=false, 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;@77cbd651, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:02:04,833 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 18:02:04,836 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:02:04,836 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:02:04,836 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:02:04,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:04,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:02:04,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:02:04,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:04,842 INFO L85 PathProgramCache]: Analyzing trace with hash 621856520, now seen corresponding path program 1 times [2024-06-27 18:02:04,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:04,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577746915] [2024-06-27 18:02:04,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:04,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:05,103 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 18:02:05,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:05,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577746915] [2024-06-27 18:02:05,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577746915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:05,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:05,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:02:05,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610254347] [2024-06-27 18:02:05,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:05,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:02:05,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:05,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:02:05,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:02:05,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-06-27 18:02:05,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 18:02:05,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:05,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-06-27 18:02:05,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:05,260 INFO L124 PetriNetUnfolderBase]: 48/105 cut-off events. [2024-06-27 18:02:05,261 INFO L125 PetriNetUnfolderBase]: For 23/26 co-relation queries the response was YES. [2024-06-27 18:02:05,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 105 events. 48/105 cut-off events. For 23/26 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 265 event pairs, 13 based on Foata normal form. 2/103 useless extension candidates. Maximal degree in co-relation 187. Up to 94 conditions per place. [2024-06-27 18:02:05,265 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 25 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-06-27 18:02:05,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 146 flow [2024-06-27 18:02:05,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:05,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:05,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-06-27 18:02:05,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2024-06-27 18:02:05,276 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 62 flow. Second operand 3 states and 50 transitions. [2024-06-27 18:02:05,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 146 flow [2024-06-27 18:02:05,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 32 transitions, 130 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 18:02:05,281 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 80 flow [2024-06-27 18:02:05,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2024-06-27 18:02:05,285 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2024-06-27 18:02:05,286 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 80 flow [2024-06-27 18:02:05,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 18:02:05,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:05,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-27 18:02:05,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:02:05,287 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:02:05,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:05,288 INFO L85 PathProgramCache]: Analyzing trace with hash 2097683920, now seen corresponding path program 1 times [2024-06-27 18:02:05,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:05,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648791836] [2024-06-27 18:02:05,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:05,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:05,476 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 18:02:05,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:05,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648791836] [2024-06-27 18:02:05,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648791836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:05,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:05,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:02:05,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374929874] [2024-06-27 18:02:05,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:05,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:02:05,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:05,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:02:05,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:02:05,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-06-27 18:02:05,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 18:02:05,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:05,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-06-27 18:02:05,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:05,573 INFO L124 PetriNetUnfolderBase]: 45/100 cut-off events. [2024-06-27 18:02:05,574 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-06-27 18:02:05,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 100 events. 45/100 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 241 event pairs, 10 based on Foata normal form. 3/102 useless extension candidates. Maximal degree in co-relation 113. Up to 72 conditions per place. [2024-06-27 18:02:05,575 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 23 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2024-06-27 18:02:05,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 152 flow [2024-06-27 18:02:05,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:05,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:05,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2024-06-27 18:02:05,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6025641025641025 [2024-06-27 18:02:05,579 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 80 flow. Second operand 3 states and 47 transitions. [2024-06-27 18:02:05,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 152 flow [2024-06-27 18:02:05,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:02:05,581 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 103 flow [2024-06-27 18:02:05,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2024-06-27 18:02:05,581 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -2 predicate places. [2024-06-27 18:02:05,582 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 103 flow [2024-06-27 18:02:05,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 18:02:05,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:05,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:05,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:02:05,584 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:02:05,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:05,587 INFO L85 PathProgramCache]: Analyzing trace with hash 318422278, now seen corresponding path program 1 times [2024-06-27 18:02:05,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:05,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927475358] [2024-06-27 18:02:05,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:05,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:05,755 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 18:02:05,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:05,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927475358] [2024-06-27 18:02:05,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927475358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:05,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:05,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:02:05,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933259211] [2024-06-27 18:02:05,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:05,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:02:05,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:05,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:02:05,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:02:05,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-06-27 18:02:05,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 18:02:05,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:05,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-06-27 18:02:05,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:05,925 INFO L124 PetriNetUnfolderBase]: 42/95 cut-off events. [2024-06-27 18:02:05,925 INFO L125 PetriNetUnfolderBase]: For 58/60 co-relation queries the response was YES. [2024-06-27 18:02:05,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 95 events. 42/95 cut-off events. For 58/60 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 225 event pairs, 9 based on Foata normal form. 3/98 useless extension candidates. Maximal degree in co-relation 94. Up to 74 conditions per place. [2024-06-27 18:02:05,928 INFO L140 encePairwiseOnDemand]: 21/26 looper letters, 27 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-27 18:02:05,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 35 transitions, 193 flow [2024-06-27 18:02:05,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:05,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:05,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-06-27 18:02:05,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-06-27 18:02:05,930 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 103 flow. Second operand 3 states and 48 transitions. [2024-06-27 18:02:05,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 35 transitions, 193 flow [2024-06-27 18:02:05,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 35 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:02:05,935 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 131 flow [2024-06-27 18:02:05,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2024-06-27 18:02:05,936 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2024-06-27 18:02:05,952 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 131 flow [2024-06-27 18:02:05,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 18:02:05,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:05,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:05,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:02:05,953 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:02:05,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:05,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1281156020, now seen corresponding path program 1 times [2024-06-27 18:02:05,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:05,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938685921] [2024-06-27 18:02:05,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:05,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:06,303 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 18:02:06,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:06,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938685921] [2024-06-27 18:02:06,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938685921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:06,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:06,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:02:06,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544436187] [2024-06-27 18:02:06,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:06,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:02:06,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:06,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:02:06,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:02:06,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-06-27 18:02:06,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 131 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:06,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:06,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-06-27 18:02:06,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:06,376 INFO L124 PetriNetUnfolderBase]: 41/94 cut-off events. [2024-06-27 18:02:06,376 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2024-06-27 18:02:06,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 94 events. 41/94 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 205 event pairs, 16 based on Foata normal form. 2/96 useless extension candidates. Maximal degree in co-relation 130. Up to 53 conditions per place. [2024-06-27 18:02:06,380 INFO L140 encePairwiseOnDemand]: 22/26 looper letters, 22 selfloop transitions, 5 changer transitions 0/30 dead transitions. [2024-06-27 18:02:06,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 185 flow [2024-06-27 18:02:06,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:06,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:06,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-06-27 18:02:06,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-06-27 18:02:06,382 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 131 flow. Second operand 3 states and 42 transitions. [2024-06-27 18:02:06,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 185 flow [2024-06-27 18:02:06,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:02:06,384 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 135 flow [2024-06-27 18:02:06,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-06-27 18:02:06,385 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-06-27 18:02:06,385 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 135 flow [2024-06-27 18:02:06,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:06,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:06,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:06,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:02:06,386 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:02:06,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:06,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1472774355, now seen corresponding path program 1 times [2024-06-27 18:02:06,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:06,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167340178] [2024-06-27 18:02:06,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:06,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:06,482 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 18:02:06,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:06,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167340178] [2024-06-27 18:02:06,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167340178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:06,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:06,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:02:06,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413661284] [2024-06-27 18:02:06,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:06,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:02:06,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:06,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:02:06,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:02:06,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-06-27 18:02:06,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:06,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:06,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-06-27 18:02:06,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:06,531 INFO L124 PetriNetUnfolderBase]: 39/88 cut-off events. [2024-06-27 18:02:06,531 INFO L125 PetriNetUnfolderBase]: For 116/119 co-relation queries the response was YES. [2024-06-27 18:02:06,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 88 events. 39/88 cut-off events. For 116/119 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 190 event pairs, 5 based on Foata normal form. 2/90 useless extension candidates. Maximal degree in co-relation 157. Up to 74 conditions per place. [2024-06-27 18:02:06,532 INFO L140 encePairwiseOnDemand]: 22/26 looper letters, 28 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-27 18:02:06,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 229 flow [2024-06-27 18:02:06,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:06,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:06,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-06-27 18:02:06,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2024-06-27 18:02:06,534 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 135 flow. Second operand 3 states and 46 transitions. [2024-06-27 18:02:06,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 229 flow [2024-06-27 18:02:06,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 219 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:02:06,535 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 158 flow [2024-06-27 18:02:06,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2024-06-27 18:02:06,536 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2024-06-27 18:02:06,537 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 158 flow [2024-06-27 18:02:06,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:06,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:06,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:06,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:02:06,537 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:02:06,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:06,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1588634255, now seen corresponding path program 1 times [2024-06-27 18:02:06,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:06,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749666305] [2024-06-27 18:02:06,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:06,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:06,670 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 18:02:06,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:06,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749666305] [2024-06-27 18:02:06,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749666305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:06,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:06,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:02:06,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818238929] [2024-06-27 18:02:06,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:06,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:02:06,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:06,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:02:06,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:02:06,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-06-27 18:02:06,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 158 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 18:02:06,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:06,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-06-27 18:02:06,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:06,725 INFO L124 PetriNetUnfolderBase]: 38/88 cut-off events. [2024-06-27 18:02:06,725 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-06-27 18:02:06,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 88 events. 38/88 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 191 event pairs, 12 based on Foata normal form. 1/88 useless extension candidates. Maximal degree in co-relation 130. Up to 49 conditions per place. [2024-06-27 18:02:06,726 INFO L140 encePairwiseOnDemand]: 23/26 looper letters, 26 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-27 18:02:06,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 232 flow [2024-06-27 18:02:06,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:06,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:06,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2024-06-27 18:02:06,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2024-06-27 18:02:06,728 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 158 flow. Second operand 3 states and 43 transitions. [2024-06-27 18:02:06,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 232 flow [2024-06-27 18:02:06,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:02:06,729 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 170 flow [2024-06-27 18:02:06,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-06-27 18:02:06,730 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-06-27 18:02:06,730 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 170 flow [2024-06-27 18:02:06,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 18:02:06,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:06,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:06,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:02:06,731 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:02:06,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:06,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1588635216, now seen corresponding path program 1 times [2024-06-27 18:02:06,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:06,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123176250] [2024-06-27 18:02:06,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:06,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:06,861 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 18:02:06,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:06,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123176250] [2024-06-27 18:02:06,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123176250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:06,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:06,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:02:06,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838244380] [2024-06-27 18:02:06,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:06,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:02:06,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:06,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:02:06,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:02:06,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-06-27 18:02:06,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 18:02:06,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:06,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-06-27 18:02:06,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:06,924 INFO L124 PetriNetUnfolderBase]: 37/86 cut-off events. [2024-06-27 18:02:06,924 INFO L125 PetriNetUnfolderBase]: For 210/211 co-relation queries the response was YES. [2024-06-27 18:02:06,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 86 events. 37/86 cut-off events. For 210/211 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 199 event pairs, 10 based on Foata normal form. 2/88 useless extension candidates. Maximal degree in co-relation 123. Up to 56 conditions per place. [2024-06-27 18:02:06,925 INFO L140 encePairwiseOnDemand]: 23/26 looper letters, 28 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-27 18:02:06,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 252 flow [2024-06-27 18:02:06,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:06,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:06,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-06-27 18:02:06,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2024-06-27 18:02:06,927 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 170 flow. Second operand 3 states and 45 transitions. [2024-06-27 18:02:06,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 252 flow [2024-06-27 18:02:06,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:02:06,928 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 177 flow [2024-06-27 18:02:06,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-27 18:02:06,929 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2024-06-27 18:02:06,929 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 177 flow [2024-06-27 18:02:06,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 18:02:06,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:06,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:06,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:02:06,930 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:02:06,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:06,931 INFO L85 PathProgramCache]: Analyzing trace with hash 2003021614, now seen corresponding path program 1 times [2024-06-27 18:02:06,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:06,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595263223] [2024-06-27 18:02:06,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:06,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:07,089 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 18:02:07,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:07,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595263223] [2024-06-27 18:02:07,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595263223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:07,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:07,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:02:07,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257850395] [2024-06-27 18:02:07,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:07,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:02:07,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:07,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:02:07,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:02:07,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-06-27 18:02:07,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 18:02:07,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:07,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-06-27 18:02:07,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:07,132 INFO L124 PetriNetUnfolderBase]: 37/87 cut-off events. [2024-06-27 18:02:07,132 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2024-06-27 18:02:07,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 87 events. 37/87 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 183 event pairs, 23 based on Foata normal form. 1/87 useless extension candidates. Maximal degree in co-relation 135. Up to 80 conditions per place. [2024-06-27 18:02:07,134 INFO L140 encePairwiseOnDemand]: 24/26 looper letters, 24 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2024-06-27 18:02:07,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 28 transitions, 211 flow [2024-06-27 18:02:07,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:07,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:07,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 35 transitions. [2024-06-27 18:02:07,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-06-27 18:02:07,135 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 177 flow. Second operand 3 states and 35 transitions. [2024-06-27 18:02:07,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 28 transitions, 211 flow [2024-06-27 18:02:07,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 186 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 18:02:07,136 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 138 flow [2024-06-27 18:02:07,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2024-06-27 18:02:07,137 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-06-27 18:02:07,137 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 138 flow [2024-06-27 18:02:07,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 18:02:07,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:07,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:07,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:02:07,138 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:02:07,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:07,138 INFO L85 PathProgramCache]: Analyzing trace with hash -352020386, now seen corresponding path program 1 times [2024-06-27 18:02:07,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:07,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765819496] [2024-06-27 18:02:07,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:07,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:07,399 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 18:02:07,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:07,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765819496] [2024-06-27 18:02:07,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765819496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:07,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:07,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:02:07,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559383536] [2024-06-27 18:02:07,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:07,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:02:07,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:07,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:02:07,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:02:07,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 26 [2024-06-27 18:02:07,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:07,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:07,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 26 [2024-06-27 18:02:07,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:07,524 INFO L124 PetriNetUnfolderBase]: 38/103 cut-off events. [2024-06-27 18:02:07,524 INFO L125 PetriNetUnfolderBase]: For 145/148 co-relation queries the response was YES. [2024-06-27 18:02:07,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 103 events. 38/103 cut-off events. For 145/148 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 305 event pairs, 3 based on Foata normal form. 3/106 useless extension candidates. Maximal degree in co-relation 338. Up to 49 conditions per place. [2024-06-27 18:02:07,525 INFO L140 encePairwiseOnDemand]: 21/26 looper letters, 32 selfloop transitions, 8 changer transitions 9/52 dead transitions. [2024-06-27 18:02:07,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 52 transitions, 300 flow [2024-06-27 18:02:07,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:02:07,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:02:07,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-27 18:02:07,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2024-06-27 18:02:07,527 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 138 flow. Second operand 6 states and 100 transitions. [2024-06-27 18:02:07,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 52 transitions, 300 flow [2024-06-27 18:02:07,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 52 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:02:07,528 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 152 flow [2024-06-27 18:02:07,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=152, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2024-06-27 18:02:07,529 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-06-27 18:02:07,529 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 152 flow [2024-06-27 18:02:07,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:07,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:07,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:07,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:02:07,530 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:02:07,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:07,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1768769530, now seen corresponding path program 2 times [2024-06-27 18:02:07,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:07,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025953077] [2024-06-27 18:02:07,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:07,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:07,739 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 18:02:07,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:07,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025953077] [2024-06-27 18:02:07,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025953077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:07,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:07,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:02:07,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027134104] [2024-06-27 18:02:07,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:07,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:02:07,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:07,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:02:07,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:02:07,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 26 [2024-06-27 18:02:07,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 152 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:07,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:07,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 26 [2024-06-27 18:02:07,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:07,864 INFO L124 PetriNetUnfolderBase]: 30/98 cut-off events. [2024-06-27 18:02:07,864 INFO L125 PetriNetUnfolderBase]: For 231/234 co-relation queries the response was YES. [2024-06-27 18:02:07,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 98 events. 30/98 cut-off events. For 231/234 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 293 event pairs, 1 based on Foata normal form. 3/101 useless extension candidates. Maximal degree in co-relation 348. Up to 46 conditions per place. [2024-06-27 18:02:07,865 INFO L140 encePairwiseOnDemand]: 21/26 looper letters, 28 selfloop transitions, 7 changer transitions 10/48 dead transitions. [2024-06-27 18:02:07,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 304 flow [2024-06-27 18:02:07,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:02:07,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:02:07,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-06-27 18:02:07,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6217948717948718 [2024-06-27 18:02:07,867 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 152 flow. Second operand 6 states and 97 transitions. [2024-06-27 18:02:07,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 304 flow [2024-06-27 18:02:07,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 288 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 18:02:07,868 INFO L231 Difference]: Finished difference. Result has 42 places, 25 transitions, 145 flow [2024-06-27 18:02:07,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=145, PETRI_PLACES=42, PETRI_TRANSITIONS=25} [2024-06-27 18:02:07,869 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2024-06-27 18:02:07,869 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 25 transitions, 145 flow [2024-06-27 18:02:07,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:07,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:07,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:07,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:02:07,870 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:02:07,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:07,870 INFO L85 PathProgramCache]: Analyzing trace with hash 778735054, now seen corresponding path program 3 times [2024-06-27 18:02:07,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:07,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313542897] [2024-06-27 18:02:07,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:07,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:08,120 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 18:02:08,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:08,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313542897] [2024-06-27 18:02:08,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313542897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:08,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:08,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:02:08,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511285703] [2024-06-27 18:02:08,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:08,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:02:08,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:08,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:02:08,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:02:08,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 26 [2024-06-27 18:02:08,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 25 transitions, 145 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:08,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:08,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 26 [2024-06-27 18:02:08,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:08,247 INFO L124 PetriNetUnfolderBase]: 19/69 cut-off events. [2024-06-27 18:02:08,247 INFO L125 PetriNetUnfolderBase]: For 160/161 co-relation queries the response was YES. [2024-06-27 18:02:08,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 69 events. 19/69 cut-off events. For 160/161 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 169 event pairs, 1 based on Foata normal form. 2/71 useless extension candidates. Maximal degree in co-relation 253. Up to 28 conditions per place. [2024-06-27 18:02:08,248 INFO L140 encePairwiseOnDemand]: 21/26 looper letters, 25 selfloop transitions, 6 changer transitions 9/43 dead transitions. [2024-06-27 18:02:08,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 43 transitions, 272 flow [2024-06-27 18:02:08,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:02:08,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:02:08,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-06-27 18:02:08,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-06-27 18:02:08,249 INFO L175 Difference]: Start difference. First operand has 42 places, 25 transitions, 145 flow. Second operand 6 states and 93 transitions. [2024-06-27 18:02:08,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 43 transitions, 272 flow [2024-06-27 18:02:08,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 43 transitions, 240 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 18:02:08,251 INFO L231 Difference]: Finished difference. Result has 41 places, 23 transitions, 114 flow [2024-06-27 18:02:08,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2024-06-27 18:02:08,252 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2024-06-27 18:02:08,252 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 114 flow [2024-06-27 18:02:08,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:08,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:08,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:08,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:02:08,253 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:02:08,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:08,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1428195290, now seen corresponding path program 4 times [2024-06-27 18:02:08,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:08,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920126368] [2024-06-27 18:02:08,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:08,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:08,485 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 18:02:08,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:08,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920126368] [2024-06-27 18:02:08,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920126368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:08,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:08,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:02:08,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953271333] [2024-06-27 18:02:08,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:08,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:02:08,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:08,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:02:08,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:02:08,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 26 [2024-06-27 18:02:08,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:08,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:08,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 26 [2024-06-27 18:02:08,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:08,620 INFO L124 PetriNetUnfolderBase]: 12/56 cut-off events. [2024-06-27 18:02:08,620 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-06-27 18:02:08,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 56 events. 12/56 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 121 event pairs, 0 based on Foata normal form. 1/57 useless extension candidates. Maximal degree in co-relation 193. Up to 27 conditions per place. [2024-06-27 18:02:08,621 INFO L140 encePairwiseOnDemand]: 21/26 looper letters, 17 selfloop transitions, 4 changer transitions 11/35 dead transitions. [2024-06-27 18:02:08,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 35 transitions, 218 flow [2024-06-27 18:02:08,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:02:08,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:02:08,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-27 18:02:08,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2024-06-27 18:02:08,622 INFO L175 Difference]: Start difference. First operand has 41 places, 23 transitions, 114 flow. Second operand 6 states and 86 transitions. [2024-06-27 18:02:08,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 35 transitions, 218 flow [2024-06-27 18:02:08,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 195 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 18:02:08,626 INFO L231 Difference]: Finished difference. Result has 41 places, 21 transitions, 95 flow [2024-06-27 18:02:08,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=95, PETRI_PLACES=41, PETRI_TRANSITIONS=21} [2024-06-27 18:02:08,628 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2024-06-27 18:02:08,628 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 21 transitions, 95 flow [2024-06-27 18:02:08,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:08,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:08,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:08,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:02:08,629 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:02:08,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:08,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2122069508, now seen corresponding path program 5 times [2024-06-27 18:02:08,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:08,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408762859] [2024-06-27 18:02:08,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:08,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:08,841 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 18:02:08,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:08,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408762859] [2024-06-27 18:02:08,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408762859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:08,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:08,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:02:08,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955874674] [2024-06-27 18:02:08,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:08,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:02:08,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:08,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:02:08,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:02:08,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 26 [2024-06-27 18:02:08,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 21 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:08,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:08,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 26 [2024-06-27 18:02:08,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:08,942 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2024-06-27 18:02:08,943 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-27 18:02:08,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 36 events. 6/36 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 45 event pairs, 0 based on Foata normal form. 1/37 useless extension candidates. Maximal degree in co-relation 116. Up to 11 conditions per place. [2024-06-27 18:02:08,943 INFO L140 encePairwiseOnDemand]: 21/26 looper letters, 16 selfloop transitions, 3 changer transitions 6/28 dead transitions. [2024-06-27 18:02:08,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 28 transitions, 162 flow [2024-06-27 18:02:08,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:02:08,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:02:08,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 79 transitions. [2024-06-27 18:02:08,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064102564102564 [2024-06-27 18:02:08,944 INFO L175 Difference]: Start difference. First operand has 41 places, 21 transitions, 95 flow. Second operand 6 states and 79 transitions. [2024-06-27 18:02:08,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 28 transitions, 162 flow [2024-06-27 18:02:08,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 28 transitions, 146 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 18:02:08,946 INFO L231 Difference]: Finished difference. Result has 40 places, 19 transitions, 72 flow [2024-06-27 18:02:08,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=72, PETRI_PLACES=40, PETRI_TRANSITIONS=19} [2024-06-27 18:02:08,946 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2024-06-27 18:02:08,946 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 19 transitions, 72 flow [2024-06-27 18:02:08,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:08,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:08,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:08,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:02:08,947 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:02:08,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:08,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1036792770, now seen corresponding path program 6 times [2024-06-27 18:02:08,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:08,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938725100] [2024-06-27 18:02:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:08,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:09,126 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 18:02:09,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:09,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938725100] [2024-06-27 18:02:09,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938725100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:09,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:09,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:02:09,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713198561] [2024-06-27 18:02:09,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:09,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:02:09,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:09,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:02:09,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:02:09,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 26 [2024-06-27 18:02:09,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 19 transitions, 72 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:09,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:09,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 26 [2024-06-27 18:02:09,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:09,217 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2024-06-27 18:02:09,217 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-06-27 18:02:09,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 25 events. 4/25 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 80. Up to 9 conditions per place. [2024-06-27 18:02:09,218 INFO L140 encePairwiseOnDemand]: 21/26 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2024-06-27 18:02:09,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 21 transitions, 113 flow [2024-06-27 18:02:09,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:02:09,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:02:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-06-27 18:02:09,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-27 18:02:09,219 INFO L175 Difference]: Start difference. First operand has 40 places, 19 transitions, 72 flow. Second operand 6 states and 74 transitions. [2024-06-27 18:02:09,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 21 transitions, 113 flow [2024-06-27 18:02:09,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 21 transitions, 94 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 18:02:09,220 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2024-06-27 18:02:09,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2024-06-27 18:02:09,220 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-06-27 18:02:09,220 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2024-06-27 18:02:09,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:09,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 7 remaining) [2024-06-27 18:02:09,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 7 remaining) [2024-06-27 18:02:09,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-06-27 18:02:09,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-06-27 18:02:09,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-06-27 18:02:09,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-06-27 18:02:09,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2024-06-27 18:02:09,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:02:09,225 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:09,227 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 18:02:09,227 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 18:02:09,231 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-27 18:02:09,231 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-27 18:02:09,232 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 06:02:09 BasicIcfg [2024-06-27 18:02:09,232 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 18:02:09,232 INFO L158 Benchmark]: Toolchain (without parser) took 5761.58ms. Allocated memory was 220.2MB in the beginning and 385.9MB in the end (delta: 165.7MB). Free memory was 187.1MB in the beginning and 124.2MB in the end (delta: 62.9MB). Peak memory consumption was 228.3MB. Max. memory is 16.1GB. [2024-06-27 18:02:09,233 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 132.1MB. Free memory is still 96.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 18:02:09,233 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 220.2MB. Free memory is still 190.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 18:02:09,233 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.89ms. Allocated memory is still 220.2MB. Free memory was 186.9MB in the beginning and 177.3MB in the end (delta: 9.6MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2024-06-27 18:02:09,233 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.62ms. Allocated memory is still 220.2MB. Free memory was 177.3MB in the beginning and 175.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 18:02:09,233 INFO L158 Benchmark]: Boogie Preprocessor took 80.91ms. Allocated memory is still 220.2MB. Free memory was 175.0MB in the beginning and 171.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 18:02:09,234 INFO L158 Benchmark]: RCFGBuilder took 776.63ms. Allocated memory is still 220.2MB. Free memory was 171.9MB in the beginning and 162.4MB in the end (delta: 9.5MB). Peak memory consumption was 66.1MB. Max. memory is 16.1GB. [2024-06-27 18:02:09,234 INFO L158 Benchmark]: TraceAbstraction took 4535.58ms. Allocated memory was 220.2MB in the beginning and 385.9MB in the end (delta: 165.7MB). Free memory was 161.4MB in the beginning and 124.2MB in the end (delta: 37.2MB). Peak memory consumption was 204.0MB. Max. memory is 16.1GB. [2024-06-27 18:02:09,235 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 132.1MB. Free memory is still 96.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 220.2MB. Free memory is still 190.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.89ms. Allocated memory is still 220.2MB. Free memory was 186.9MB in the beginning and 177.3MB in the end (delta: 9.6MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.62ms. Allocated memory is still 220.2MB. Free memory was 177.3MB in the beginning and 175.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 80.91ms. Allocated memory is still 220.2MB. Free memory was 175.0MB in the beginning and 171.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 776.63ms. Allocated memory is still 220.2MB. Free memory was 171.9MB in the beginning and 162.4MB in the end (delta: 9.5MB). Peak memory consumption was 66.1MB. Max. memory is 16.1GB. * TraceAbstraction took 4535.58ms. Allocated memory was 220.2MB in the beginning and 385.9MB in the end (delta: 165.7MB). Free memory was 161.4MB in the beginning and 124.2MB in the end (delta: 37.2MB). Peak memory consumption was 204.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 81]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 82]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 83]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 88]: 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 7 procedures, 36 locations, 7 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: 4.4s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 480 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 397 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 963 IncrementalHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 13 mSDtfsCounter, 963 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=177occurred in iteration=7, InterpolantAutomatonStates: 60, 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, 2.4s InterpolantComputationTime, 196 NumberOfCodeBlocks, 196 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 182 ConstructedInterpolants, 0 QuantifiedInterpolants, 1396 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 18:02:09,283 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