./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-sre-subst.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/chl-sre-subst.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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-sre-subst.wvr.c ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/chl-sre-subst.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 20:26:58,988 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 20:26:59,049 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 20:26:59,054 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 20:26:59,054 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 20:26:59,076 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 20:26:59,077 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 20:26:59,077 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 20:26:59,077 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 20:26:59,080 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 20:26:59,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 20:26:59,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 20:26:59,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 20:26:59,082 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 20:26:59,083 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 20:26:59,083 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 20:26:59,083 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 20:26:59,083 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 20:26:59,083 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 20:26:59,084 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 20:26:59,084 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 20:26:59,084 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 20:26:59,084 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 20:26:59,097 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 20:26:59,097 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 20:26:59,097 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 20:26:59,097 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 20:26:59,098 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 20:26:59,099 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 20:26:59,099 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 20:26:59,100 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 20:26:59,100 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 20:26:59,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 20:26:59,101 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 20:26:59,101 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 20:26:59,101 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 20:26:59,102 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 20:26:59,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 20:26:59,102 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 20:26:59,102 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 20:26:59,102 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 20:26:59,102 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 20:26:59,103 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 20:26:59,103 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 20:26:59,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 20:26:59,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 20:26:59,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 20:26:59,318 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 20:26:59,319 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 20:26:59,320 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/chl-sre-subst.wvr.yml/witness.yml [2024-06-21 20:26:59,382 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 20:26:59,382 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 20:26:59,382 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-sre-subst.wvr.c [2024-06-21 20:27:00,429 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 20:27:00,574 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 20:27:00,575 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-subst.wvr.c [2024-06-21 20:27:00,579 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6dd71ac3/adef44bfe8404d879d108d2d72c7b412/FLAGf92bf7357 [2024-06-21 20:27:00,588 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6dd71ac3/adef44bfe8404d879d108d2d72c7b412 [2024-06-21 20:27:00,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 20:27:00,590 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 20:27:00,590 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 20:27:00,591 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 20:27:00,594 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 20:27:00,594 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:26:59" (1/2) ... [2024-06-21 20:27:00,595 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@334cdc4f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:27:00, skipping insertion in model container [2024-06-21 20:27:00,595 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:26:59" (1/2) ... [2024-06-21 20:27:00,596 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5ea601bd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:27:00, skipping insertion in model container [2024-06-21 20:27:00,596 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 08:27:00" (2/2) ... [2024-06-21 20:27:00,596 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@334cdc4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:00, skipping insertion in model container [2024-06-21 20:27:00,597 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 08:27:00" (2/2) ... [2024-06-21 20:27:00,597 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 20:27:00,609 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 20:27:00,609 INFO L97 edCorrectnessWitness]: Location invariant before [L69-L69] ((! multithreaded || ((result_5 == -1 || result_5 == 0) || result_5 == 1)) && (! multithreaded || ((result_4 == -1 || result_4 == 0) || result_4 == 1))) && (! multithreaded || ((result_3 == -1 || result_3 == 0) || result_3 == 1)) [2024-06-21 20:27:00,610 INFO L97 edCorrectnessWitness]: Location invariant before [L70-L70] ((! multithreaded || ((result_5 == -1 || result_5 == 0) || result_5 == 1)) && (! multithreaded || ((result_4 == -1 || result_4 == 0) || result_4 == 1))) && (! multithreaded || ((result_3 == -1 || result_3 == 0) || result_3 == 1)) [2024-06-21 20:27:00,610 INFO L97 edCorrectnessWitness]: Location invariant before [L71-L71] ((! multithreaded || ((result_5 == -1 || result_5 == 0) || result_5 == 1)) && (! multithreaded || ((result_4 == -1 || result_4 == 0) || result_4 == 1))) && (! multithreaded || ((result_3 == -1 || result_3 == 0) || result_3 == 1)) [2024-06-21 20:27:00,610 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 20:27:00,610 INFO L106 edCorrectnessWitness]: ghost_update [L68-L68] multithreaded = 1; [2024-06-21 20:27:00,623 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 20:27:00,765 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 20:27:00,775 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 20:27:00,815 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 20:27:00,829 INFO L206 MainTranslator]: Completed translation [2024-06-21 20:27:00,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:00 WrapperNode [2024-06-21 20:27:00,829 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 20:27:00,830 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 20:27:00,830 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 20:27:00,830 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 20:27:00,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:00" (1/1) ... [2024-06-21 20:27:00,840 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:00" (1/1) ... [2024-06-21 20:27:00,858 INFO L138 Inliner]: procedures = 21, calls = 12, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 69 [2024-06-21 20:27:00,858 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 20:27:00,859 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 20:27:00,859 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 20:27:00,859 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 20:27:00,866 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:00" (1/1) ... [2024-06-21 20:27:00,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:00" (1/1) ... [2024-06-21 20:27:00,872 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:00" (1/1) ... [2024-06-21 20:27:00,883 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]. [2024-06-21 20:27:00,883 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:00" (1/1) ... [2024-06-21 20:27:00,883 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:00" (1/1) ... [2024-06-21 20:27:00,886 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:00" (1/1) ... [2024-06-21 20:27:00,887 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:00" (1/1) ... [2024-06-21 20:27:00,888 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:00" (1/1) ... [2024-06-21 20:27:00,889 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:00" (1/1) ... [2024-06-21 20:27:00,890 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 20:27:00,890 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 20:27:00,891 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 20:27:00,891 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 20:27:00,891 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:00" (1/1) ... [2024-06-21 20:27:00,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 20:27:00,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 20:27:00,930 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) [2024-06-21 20:27:00,934 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 [2024-06-21 20:27:00,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 20:27:00,969 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-21 20:27:00,969 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-21 20:27:00,969 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-21 20:27:00,969 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-21 20:27:00,969 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-21 20:27:00,969 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-21 20:27:00,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 20:27:00,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 20:27:00,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 20:27:00,971 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 20:27:01,033 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 20:27:01,034 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 20:27:01,189 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 20:27:01,189 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 20:27:01,274 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 20:27:01,274 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 20:27:01,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 08:27:01 BoogieIcfgContainer [2024-06-21 20:27:01,275 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 20:27:01,276 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 20:27:01,277 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 20:27:01,279 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 20:27:01,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:26:59" (1/4) ... [2024-06-21 20:27:01,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2089f22a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 08:27:01, skipping insertion in model container [2024-06-21 20:27:01,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 08:27:00" (2/4) ... [2024-06-21 20:27:01,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2089f22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 08:27:01, skipping insertion in model container [2024-06-21 20:27:01,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:00" (3/4) ... [2024-06-21 20:27:01,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2089f22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 08:27:01, skipping insertion in model container [2024-06-21 20:27:01,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 08:27:01" (4/4) ... [2024-06-21 20:27:01,282 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-sre-subst.wvr.c [2024-06-21 20:27:01,295 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 20:27:01,296 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-21 20:27:01,296 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 20:27:01,345 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-21 20:27:01,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 24 transitions, 69 flow [2024-06-21 20:27:01,398 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2024-06-21 20:27:01,404 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-21 20:27:01,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 21 events. 0/21 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-21 20:27:01,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 24 transitions, 69 flow [2024-06-21 20:27:01,408 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 16 transitions, 41 flow [2024-06-21 20:27:01,422 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 20:27:01,429 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;@42737770, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 20:27:01,430 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-21 20:27:01,436 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 20:27:01,436 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 20:27:01,436 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 20:27:01,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:27:01,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 20:27:01,437 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:27:01,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:27:01,442 INFO L85 PathProgramCache]: Analyzing trace with hash 213565881, now seen corresponding path program 1 times [2024-06-21 20:27:01,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:27:01,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136536131] [2024-06-21 20:27:01,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:27:01,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:27:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:27:01,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:27:01,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:27:01,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136536131] [2024-06-21 20:27:01,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136536131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:27:01,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:27:01,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 20:27:01,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361697286] [2024-06-21 20:27:01,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:27:01,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 20:27:01,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:27:01,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 20:27:01,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 20:27:01,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-21 20:27:01,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 41 flow. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2024-06-21 20:27:01,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:27:01,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-21 20:27:01,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:27:01,761 INFO L124 PetriNetUnfolderBase]: 43/90 cut-off events. [2024-06-21 20:27:01,762 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-21 20:27:01,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 90 events. 43/90 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 229 event pairs, 8 based on Foata normal form. 1/87 useless extension candidates. Maximal degree in co-relation 186. Up to 81 conditions per place. [2024-06-21 20:27:01,767 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 21 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2024-06-21 20:27:01,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 26 transitions, 117 flow [2024-06-21 20:27:01,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 20:27:01,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 20:27:01,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2024-06-21 20:27:01,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2024-06-21 20:27:01,778 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 41 flow. Second operand 3 states and 43 transitions. [2024-06-21 20:27:01,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 26 transitions, 117 flow [2024-06-21 20:27:01,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 26 transitions, 112 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 20:27:01,782 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 68 flow [2024-06-21 20:27:01,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2024-06-21 20:27:01,785 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2024-06-21 20:27:01,786 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 68 flow [2024-06-21 20:27:01,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2024-06-21 20:27:01,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:27:01,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-21 20:27:01,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 20:27:01,786 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:27:01,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:27:01,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1969391662, now seen corresponding path program 1 times [2024-06-21 20:27:01,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:27:01,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933088015] [2024-06-21 20:27:01,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:27:01,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:27:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:27:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:27:01,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:27:01,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933088015] [2024-06-21 20:27:01,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933088015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:27:01,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:27:01,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 20:27:01,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824594861] [2024-06-21 20:27:01,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:27:01,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 20:27:01,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:27:01,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 20:27:01,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 20:27:01,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-21 20:27:01,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-06-21 20:27:01,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:27:01,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-21 20:27:01,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:27:02,039 INFO L124 PetriNetUnfolderBase]: 40/84 cut-off events. [2024-06-21 20:27:02,039 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-06-21 20:27:02,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 84 events. 40/84 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 192 event pairs, 9 based on Foata normal form. 3/87 useless extension candidates. Maximal degree in co-relation 244. Up to 60 conditions per place. [2024-06-21 20:27:02,041 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 18 selfloop transitions, 5 changer transitions 0/24 dead transitions. [2024-06-21 20:27:02,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 24 transitions, 128 flow [2024-06-21 20:27:02,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 20:27:02,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 20:27:02,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2024-06-21 20:27:02,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-21 20:27:02,044 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 68 flow. Second operand 3 states and 39 transitions. [2024-06-21 20:27:02,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 24 transitions, 128 flow [2024-06-21 20:27:02,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 24 transitions, 124 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 20:27:02,046 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 91 flow [2024-06-21 20:27:02,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2024-06-21 20:27:02,047 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2024-06-21 20:27:02,047 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 91 flow [2024-06-21 20:27:02,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-06-21 20:27:02,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:27:02,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:27:02,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 20:27:02,048 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:27:02,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:27:02,050 INFO L85 PathProgramCache]: Analyzing trace with hash -905025596, now seen corresponding path program 1 times [2024-06-21 20:27:02,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:27:02,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063855957] [2024-06-21 20:27:02,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:27:02,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:27:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:27:02,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:27:02,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:27:02,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063855957] [2024-06-21 20:27:02,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063855957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:27:02,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:27:02,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 20:27:02,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113324079] [2024-06-21 20:27:02,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:27:02,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 20:27:02,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:27:02,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 20:27:02,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 20:27:02,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-21 20:27:02,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-06-21 20:27:02,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:27:02,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-21 20:27:02,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:27:02,271 INFO L124 PetriNetUnfolderBase]: 37/79 cut-off events. [2024-06-21 20:27:02,272 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-21 20:27:02,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 79 events. 37/79 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 178 event pairs, 5 based on Foata normal form. 2/81 useless extension candidates. Maximal degree in co-relation 259. Up to 61 conditions per place. [2024-06-21 20:27:02,274 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 23 selfloop transitions, 5 changer transitions 0/29 dead transitions. [2024-06-21 20:27:02,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 175 flow [2024-06-21 20:27:02,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 20:27:02,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 20:27:02,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2024-06-21 20:27:02,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-06-21 20:27:02,275 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 91 flow. Second operand 3 states and 41 transitions. [2024-06-21 20:27:02,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 175 flow [2024-06-21 20:27:02,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 20:27:02,277 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 119 flow [2024-06-21 20:27:02,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2024-06-21 20:27:02,279 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2024-06-21 20:27:02,279 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 119 flow [2024-06-21 20:27:02,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-06-21 20:27:02,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:27:02,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:27:02,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 20:27:02,280 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:27:02,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:27:02,280 INFO L85 PathProgramCache]: Analyzing trace with hash 2008976925, now seen corresponding path program 1 times [2024-06-21 20:27:02,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:27:02,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672681779] [2024-06-21 20:27:02,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:27:02,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:27:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:27:02,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:27:02,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:27:02,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672681779] [2024-06-21 20:27:02,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672681779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:27:02,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:27:02,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:27:02,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951154873] [2024-06-21 20:27:02,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:27:02,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:27:02,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:27:02,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:27:02,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:27:02,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-21 20:27:02,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-06-21 20:27:02,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:27:02,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-21 20:27:02,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:27:02,549 INFO L124 PetriNetUnfolderBase]: 36/76 cut-off events. [2024-06-21 20:27:02,549 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-06-21 20:27:02,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 76 events. 36/76 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 144 event pairs, 15 based on Foata normal form. 2/78 useless extension candidates. Maximal degree in co-relation 279. Up to 48 conditions per place. [2024-06-21 20:27:02,552 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 16 selfloop transitions, 5 changer transitions 0/22 dead transitions. [2024-06-21 20:27:02,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 22 transitions, 155 flow [2024-06-21 20:27:02,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 20:27:02,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 20:27:02,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2024-06-21 20:27:02,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-21 20:27:02,554 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 119 flow. Second operand 3 states and 33 transitions. [2024-06-21 20:27:02,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 22 transitions, 155 flow [2024-06-21 20:27:02,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 22 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 20:27:02,557 INFO L231 Difference]: Finished difference. Result has 30 places, 21 transitions, 123 flow [2024-06-21 20:27:02,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=30, PETRI_TRANSITIONS=21} [2024-06-21 20:27:02,558 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2024-06-21 20:27:02,558 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 123 flow [2024-06-21 20:27:02,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-06-21 20:27:02,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:27:02,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:27:02,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 20:27:02,559 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:27:02,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:27:02,560 INFO L85 PathProgramCache]: Analyzing trace with hash -2109173575, now seen corresponding path program 1 times [2024-06-21 20:27:02,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:27:02,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455090839] [2024-06-21 20:27:02,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:27:02,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:27:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:27:02,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:27:02,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:27:02,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455090839] [2024-06-21 20:27:02,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455090839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:27:02,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:27:02,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 20:27:02,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262542036] [2024-06-21 20:27:02,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:27:02,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 20:27:02,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:27:02,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 20:27:02,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 20:27:02,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-21 20:27:02,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:27:02,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:27:02,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-21 20:27:02,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:27:02,684 INFO L124 PetriNetUnfolderBase]: 34/73 cut-off events. [2024-06-21 20:27:02,684 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-06-21 20:27:02,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 73 events. 34/73 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 156 event pairs, 1 based on Foata normal form. 1/74 useless extension candidates. Maximal degree in co-relation 268. Up to 61 conditions per place. [2024-06-21 20:27:02,686 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 24 selfloop transitions, 5 changer transitions 0/30 dead transitions. [2024-06-21 20:27:02,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 211 flow [2024-06-21 20:27:02,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 20:27:02,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 20:27:02,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2024-06-21 20:27:02,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-21 20:27:02,687 INFO L175 Difference]: Start difference. First operand has 30 places, 21 transitions, 123 flow. Second operand 3 states and 39 transitions. [2024-06-21 20:27:02,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 211 flow [2024-06-21 20:27:02,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 201 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 20:27:02,691 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 146 flow [2024-06-21 20:27:02,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2024-06-21 20:27:02,694 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2024-06-21 20:27:02,695 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 146 flow [2024-06-21 20:27:02,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:27:02,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:27:02,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:27:02,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 20:27:02,696 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:27:02,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:27:02,697 INFO L85 PathProgramCache]: Analyzing trace with hash -959872476, now seen corresponding path program 1 times [2024-06-21 20:27:02,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:27:02,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245463789] [2024-06-21 20:27:02,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:27:02,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:27:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:27:02,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:27:02,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:27:02,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245463789] [2024-06-21 20:27:02,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245463789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:27:02,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:27:02,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:27:02,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726440511] [2024-06-21 20:27:02,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:27:02,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:27:02,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:27:02,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:27:02,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:27:02,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-21 20:27:02,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-06-21 20:27:02,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:27:02,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-21 20:27:02,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:27:02,884 INFO L124 PetriNetUnfolderBase]: 33/71 cut-off events. [2024-06-21 20:27:02,885 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2024-06-21 20:27:02,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 71 events. 33/71 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 146 event pairs, 9 based on Foata normal form. 1/72 useless extension candidates. Maximal degree in co-relation 291. Up to 43 conditions per place. [2024-06-21 20:27:02,885 INFO L140 encePairwiseOnDemand]: 21/24 looper letters, 21 selfloop transitions, 5 changer transitions 0/27 dead transitions. [2024-06-21 20:27:02,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 208 flow [2024-06-21 20:27:02,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 20:27:02,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 20:27:02,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 35 transitions. [2024-06-21 20:27:02,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-21 20:27:02,886 INFO L175 Difference]: Start difference. First operand has 31 places, 23 transitions, 146 flow. Second operand 3 states and 35 transitions. [2024-06-21 20:27:02,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 208 flow [2024-06-21 20:27:02,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 20:27:02,889 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 158 flow [2024-06-21 20:27:02,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2024-06-21 20:27:02,890 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-06-21 20:27:02,890 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 158 flow [2024-06-21 20:27:02,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-06-21 20:27:02,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:27:02,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:27:02,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 20:27:02,891 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:27:02,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:27:02,892 INFO L85 PathProgramCache]: Analyzing trace with hash -959871515, now seen corresponding path program 1 times [2024-06-21 20:27:02,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:27:02,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646355983] [2024-06-21 20:27:02,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:27:02,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:27:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:27:03,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:27:03,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:27:03,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646355983] [2024-06-21 20:27:03,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646355983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:27:03,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:27:03,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:27:03,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75701233] [2024-06-21 20:27:03,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:27:03,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:27:03,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:27:03,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:27:03,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:27:03,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-21 20:27:03,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 158 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-06-21 20:27:03,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:27:03,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-21 20:27:03,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:27:03,343 INFO L124 PetriNetUnfolderBase]: 34/74 cut-off events. [2024-06-21 20:27:03,343 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2024-06-21 20:27:03,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 74 events. 34/74 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 166 event pairs, 2 based on Foata normal form. 1/75 useless extension candidates. Maximal degree in co-relation 316. Up to 46 conditions per place. [2024-06-21 20:27:03,344 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 26 selfloop transitions, 9 changer transitions 0/36 dead transitions. [2024-06-21 20:27:03,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 36 transitions, 278 flow [2024-06-21 20:27:03,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 20:27:03,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 20:27:03,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2024-06-21 20:27:03,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-21 20:27:03,350 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 158 flow. Second operand 4 states and 50 transitions. [2024-06-21 20:27:03,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 36 transitions, 278 flow [2024-06-21 20:27:03,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 20:27:03,352 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 183 flow [2024-06-21 20:27:03,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2024-06-21 20:27:03,353 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2024-06-21 20:27:03,353 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 183 flow [2024-06-21 20:27:03,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-06-21 20:27:03,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:27:03,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:27:03,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 20:27:03,354 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:27:03,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:27:03,354 INFO L85 PathProgramCache]: Analyzing trace with hash -959870585, now seen corresponding path program 2 times [2024-06-21 20:27:03,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:27:03,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544136451] [2024-06-21 20:27:03,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:27:03,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:27:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:27:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:27:03,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:27:03,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544136451] [2024-06-21 20:27:03,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544136451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:27:03,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:27:03,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:27:03,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819817008] [2024-06-21 20:27:03,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:27:03,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:27:03,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:27:03,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:27:03,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:27:03,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-21 20:27:03,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 183 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-06-21 20:27:03,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:27:03,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-21 20:27:03,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:27:03,504 INFO L124 PetriNetUnfolderBase]: 33/72 cut-off events. [2024-06-21 20:27:03,505 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2024-06-21 20:27:03,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 72 events. 33/72 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 153 event pairs, 7 based on Foata normal form. 1/73 useless extension candidates. Maximal degree in co-relation 337. Up to 45 conditions per place. [2024-06-21 20:27:03,506 INFO L140 encePairwiseOnDemand]: 21/24 looper letters, 24 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2024-06-21 20:27:03,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 261 flow [2024-06-21 20:27:03,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 20:27:03,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 20:27:03,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2024-06-21 20:27:03,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-21 20:27:03,507 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 183 flow. Second operand 3 states and 38 transitions. [2024-06-21 20:27:03,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 261 flow [2024-06-21 20:27:03,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 245 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-21 20:27:03,508 INFO L231 Difference]: Finished difference. Result has 37 places, 24 transitions, 187 flow [2024-06-21 20:27:03,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2024-06-21 20:27:03,509 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2024-06-21 20:27:03,509 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 187 flow [2024-06-21 20:27:03,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-06-21 20:27:03,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:27:03,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:27:03,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 20:27:03,510 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:27:03,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:27:03,510 INFO L85 PathProgramCache]: Analyzing trace with hash 308724186, now seen corresponding path program 1 times [2024-06-21 20:27:03,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:27:03,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6989950] [2024-06-21 20:27:03,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:27:03,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:27:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:27:03,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:27:03,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:27:03,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6989950] [2024-06-21 20:27:03,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6989950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:27:03,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:27:03,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 20:27:03,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917909387] [2024-06-21 20:27:03,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:27:03,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:27:03,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:27:03,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:27:03,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:27:03,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-21 20:27:03,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-06-21 20:27:03,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:27:03,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-21 20:27:03,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:27:03,738 INFO L124 PetriNetUnfolderBase]: 33/71 cut-off events. [2024-06-21 20:27:03,739 INFO L125 PetriNetUnfolderBase]: For 263/263 co-relation queries the response was YES. [2024-06-21 20:27:03,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 71 events. 33/71 cut-off events. For 263/263 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 153 event pairs, 7 based on Foata normal form. 1/72 useless extension candidates. Maximal degree in co-relation 334. Up to 43 conditions per place. [2024-06-21 20:27:03,739 INFO L140 encePairwiseOnDemand]: 21/24 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2024-06-21 20:27:03,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 30 transitions, 245 flow [2024-06-21 20:27:03,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 20:27:03,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 20:27:03,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 42 transitions. [2024-06-21 20:27:03,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 20:27:03,740 INFO L175 Difference]: Start difference. First operand has 37 places, 24 transitions, 187 flow. Second operand 4 states and 42 transitions. [2024-06-21 20:27:03,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 30 transitions, 245 flow [2024-06-21 20:27:03,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 210 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-21 20:27:03,742 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2024-06-21 20:27:03,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2024-06-21 20:27:03,743 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-06-21 20:27:03,743 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2024-06-21 20:27:03,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-06-21 20:27:03,745 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-21 20:27:03,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-21 20:27:03,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-21 20:27:03,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-21 20:27:03,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-21 20:27:03,748 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-21 20:27:03,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 20:27:03,749 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:27:03,752 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 20:27:03,752 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 20:27:03,756 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-21 20:27:03,756 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-21 20:27:03,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 08:27:03 BasicIcfg [2024-06-21 20:27:03,757 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 20:27:03,758 INFO L158 Benchmark]: Toolchain (without parser) took 3168.02ms. Allocated memory was 125.8MB in the beginning and 220.2MB in the end (delta: 94.4MB). Free memory was 78.2MB in the beginning and 99.4MB in the end (delta: -21.2MB). Peak memory consumption was 73.3MB. Max. memory is 16.1GB. [2024-06-21 20:27:03,758 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 125.8MB. Free memory was 97.3MB in the beginning and 97.1MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 20:27:03,758 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 125.8MB. Free memory is still 93.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 20:27:03,758 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.39ms. Allocated memory is still 125.8MB. Free memory was 77.8MB in the beginning and 63.6MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-06-21 20:27:03,758 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.17ms. Allocated memory is still 125.8MB. Free memory was 63.6MB in the beginning and 61.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 20:27:03,759 INFO L158 Benchmark]: Boogie Preprocessor took 31.25ms. Allocated memory is still 125.8MB. Free memory was 61.7MB in the beginning and 59.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 20:27:03,759 INFO L158 Benchmark]: RCFGBuilder took 384.54ms. Allocated memory was 125.8MB in the beginning and 182.5MB in the end (delta: 56.6MB). Free memory was 59.7MB in the beginning and 132.4MB in the end (delta: -72.7MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2024-06-21 20:27:03,760 INFO L158 Benchmark]: TraceAbstraction took 2480.84ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 131.6MB in the beginning and 99.4MB in the end (delta: 32.2MB). Peak memory consumption was 69.5MB. Max. memory is 16.1GB. [2024-06-21 20:27:03,762 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 125.8MB. Free memory was 97.3MB in the beginning and 97.1MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 125.8MB. Free memory is still 93.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 239.39ms. Allocated memory is still 125.8MB. Free memory was 77.8MB in the beginning and 63.6MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.17ms. Allocated memory is still 125.8MB. Free memory was 63.6MB in the beginning and 61.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.25ms. Allocated memory is still 125.8MB. Free memory was 61.7MB in the beginning and 59.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 384.54ms. Allocated memory was 125.8MB in the beginning and 182.5MB in the end (delta: 56.6MB). Free memory was 59.7MB in the beginning and 132.4MB in the end (delta: -72.7MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2480.84ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 131.6MB in the beginning and 99.4MB in the end (delta: 32.2MB). Peak memory consumption was 69.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 69]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 70]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 71]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 34 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.4s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 235 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 191 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 357 IncrementalHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 8 mSDtfsCounter, 357 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=187occurred in iteration=8, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 653 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-21 20:27:03,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE