./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_20-publish-regression_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_20-publish-regression_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3d25acf6 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/goblint-regression/13-privatized_20-publish-regression_true.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_20-publish-regression_true.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-3d25acf-m [2024-01-30 14:21:26,239 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:21:26,274 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:21:26,276 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:21:26,277 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:21:26,291 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:21:26,291 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:21:26,291 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:21:26,292 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:21:26,292 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:21:26,292 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:21:26,299 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:21:26,300 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:21:26,300 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:21:26,300 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:21:26,301 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:21:26,301 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:21:26,301 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:21:26,301 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:21:26,301 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:21:26,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:21:26,302 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:21:26,302 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:21:26,302 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:21:26,303 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:21:26,303 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:21:26,303 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:21:26,303 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:21:26,303 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:21:26,304 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:21:26,304 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:21:26,304 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:21:26,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:21:26,305 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:21:26,305 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:21:26,305 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:21:26,305 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:21:26,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:21:26,305 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:21:26,305 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:21:26,305 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:21:26,306 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:21:26,306 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:21:26,306 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:21:26,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:21:26,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:21:26,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:21:26,528 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:21:26,528 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:21:26,529 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_20-publish-regression_true.i [2024-01-30 14:21:27,489 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:21:27,681 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:21:27,681 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_20-publish-regression_true.i [2024-01-30 14:21:27,690 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed4ce2119/1ec08a10429545a9bfa006df9d5ab745/FLAG12dd44e09 [2024-01-30 14:21:27,702 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed4ce2119/1ec08a10429545a9bfa006df9d5ab745 [2024-01-30 14:21:27,704 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:21:27,704 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:21:27,704 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_20-publish-regression_true.yml/witness.yml [2024-01-30 14:21:27,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:21:27,797 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:21:27,798 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:21:27,798 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:21:27,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:21:27,801 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:21:27" (1/2) ... [2024-01-30 14:21:27,804 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28ce345b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:21:27, skipping insertion in model container [2024-01-30 14:21:27,804 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:21:27" (1/2) ... [2024-01-30 14:21:27,805 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@42a590bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:21:27, skipping insertion in model container [2024-01-30 14:21:27,805 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:21:27" (2/2) ... [2024-01-30 14:21:27,806 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28ce345b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:27, skipping insertion in model container [2024-01-30 14:21:27,806 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:21:27" (2/2) ... [2024-01-30 14:21:27,806 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:21:27,835 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:21:27,837 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] (glob1 == 5) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:27,837 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] (glob1 == 5) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:27,837 INFO L98 nessWitnessExtractor]: Location invariant before [L698-L698] glob1 == 0 [2024-01-30 14:21:27,837 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (glob1 == 0) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:27,837 INFO L98 nessWitnessExtractor]: Location invariant before [L702-L702] glob1 == 0 [2024-01-30 14:21:27,838 INFO L98 nessWitnessExtractor]: Location invariant before [L686-L686] (glob1 == 0) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:27,838 INFO L98 nessWitnessExtractor]: Location invariant before [L687-L687] (glob1 == 0) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:27,838 INFO L98 nessWitnessExtractor]: Location invariant before [L19-L19] (glob1 == 0 || glob1 == 5) && (glob1 == 0 || glob1 == 5) [2024-01-30 14:21:27,838 INFO L98 nessWitnessExtractor]: Location invariant before [L688-L688] (glob1 == 5) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:27,838 INFO L98 nessWitnessExtractor]: Location invariant before [L699-L699] glob1 == 0 [2024-01-30 14:21:27,838 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] (glob1 == 0) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:27,838 INFO L98 nessWitnessExtractor]: Location invariant before [L689-L689] (glob1 == 5) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:27,839 INFO L98 nessWitnessExtractor]: Location invariant before [L701-L701] glob1 == 0 [2024-01-30 14:21:27,839 INFO L98 nessWitnessExtractor]: Location invariant before [L694-L694] (unsigned long )arg == 0UL [2024-01-30 14:21:27,839 INFO L98 nessWitnessExtractor]: Location invariant before [L685-L685] (unsigned long )arg == 0UL [2024-01-30 14:21:27,875 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:21:28,023 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_20-publish-regression_true.i[1095,1108] [2024-01-30 14:21:28,128 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:21:28,136 INFO L202 MainTranslator]: Completed pre-run [2024-01-30 14:21:28,144 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_20-publish-regression_true.i[1095,1108] [2024-01-30 14:21:28,145 WARN L424 MainDispatcher]: Unable to annotate void __VERIFIER_assert(int cond) { if(!(cond)) { ERROR: {reach_error();abort();} } } with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-30 14:21:28,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:21:28,217 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:21:28,217 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:28 WrapperNode [2024-01-30 14:21:28,217 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:21:28,218 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:21:28,218 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:21:28,218 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:21:28,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:28" (1/1) ... [2024-01-30 14:21:28,249 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:28" (1/1) ... [2024-01-30 14:21:28,274 INFO L138 Inliner]: procedures = 163, calls = 35, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 100 [2024-01-30 14:21:28,276 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:21:28,277 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:21:28,278 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:21:28,278 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:21:28,286 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:28" (1/1) ... [2024-01-30 14:21:28,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:28" (1/1) ... [2024-01-30 14:21:28,298 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:28" (1/1) ... [2024-01-30 14:21:28,321 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-01-30 14:21:28,322 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:28" (1/1) ... [2024-01-30 14:21:28,323 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:28" (1/1) ... [2024-01-30 14:21:28,331 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:28" (1/1) ... [2024-01-30 14:21:28,332 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:28" (1/1) ... [2024-01-30 14:21:28,333 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:28" (1/1) ... [2024-01-30 14:21:28,334 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:28" (1/1) ... [2024-01-30 14:21:28,336 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:21:28,336 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:21:28,336 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:21:28,337 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:21:28,337 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:28" (1/1) ... [2024-01-30 14:21:28,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:21:28,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:21:28,361 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) [2024-01-30 14:21:28,367 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 [2024-01-30 14:21:28,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-30 14:21:28,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-30 14:21:28,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-30 14:21:28,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-30 14:21:28,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:21:28,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:21:28,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:21:28,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-30 14:21:28,395 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-30 14:21:28,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:21:28,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:21:28,396 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-01-30 14:21:28,396 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-01-30 14:21:28,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:21:28,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:21:28,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:21:28,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:21:28,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-30 14:21:28,397 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-30 14:21:28,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:21:28,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:21:28,399 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-30 14:21:28,496 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:21:28,498 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:21:28,683 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:21:28,684 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:21:28,782 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:21:28,782 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-30 14:21:28,783 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:21:28 BoogieIcfgContainer [2024-01-30 14:21:28,783 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:21:28,786 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:21:28,786 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:21:28,789 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:21:28,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:21:27" (1/4) ... [2024-01-30 14:21:28,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121a8a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:21:28, skipping insertion in model container [2024-01-30 14:21:28,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:21:27" (2/4) ... [2024-01-30 14:21:28,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121a8a7d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:21:28, skipping insertion in model container [2024-01-30 14:21:28,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:28" (3/4) ... [2024-01-30 14:21:28,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121a8a7d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:21:28, skipping insertion in model container [2024-01-30 14:21:28,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:21:28" (4/4) ... [2024-01-30 14:21:28,792 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_20-publish-regression_true.i [2024-01-30 14:21:28,805 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:21:28,805 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-01-30 14:21:28,806 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:21:28,879 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-01-30 14:21:28,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 66 transitions, 139 flow [2024-01-30 14:21:28,952 INFO L124 PetriNetUnfolderBase]: 3/65 cut-off events. [2024-01-30 14:21:28,952 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-30 14:21:28,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 65 events. 3/65 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2024-01-30 14:21:28,956 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 66 transitions, 139 flow [2024-01-30 14:21:28,960 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 63 transitions, 129 flow [2024-01-30 14:21:28,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:21:28,982 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;@31a4ccac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:21:28,982 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-01-30 14:21:28,985 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:21:28,985 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:21:28,985 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:21:28,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:28,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:21:28,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-30 14:21:28,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:29,000 INFO L85 PathProgramCache]: Analyzing trace with hash 9227, now seen corresponding path program 1 times [2024-01-30 14:21:29,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:29,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167452856] [2024-01-30 14:21:29,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:29,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:29,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:29,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167452856] [2024-01-30 14:21:29,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167452856] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:29,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:29,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:21:29,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471811297] [2024-01-30 14:21:29,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:29,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:21:29,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:29,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:21:29,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:21:29,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 66 [2024-01-30 14:21:29,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2024-01-30 14:21:29,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:29,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 66 [2024-01-30 14:21:29,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:29,434 INFO L124 PetriNetUnfolderBase]: 132/509 cut-off events. [2024-01-30 14:21:29,434 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:21:29,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 847 conditions, 509 events. 132/509 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2796 event pairs, 75 based on Foata normal form. 59/528 useless extension candidates. Maximal degree in co-relation 829. Up to 216 conditions per place. [2024-01-30 14:21:29,441 INFO L140 encePairwiseOnDemand]: 51/66 looper letters, 35 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2024-01-30 14:21:29,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 68 transitions, 219 flow [2024-01-30 14:21:29,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:21:29,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:21:29,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-01-30 14:21:29,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7070707070707071 [2024-01-30 14:21:29,455 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 129 flow. Second operand 3 states and 140 transitions. [2024-01-30 14:21:29,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 68 transitions, 219 flow [2024-01-30 14:21:29,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 68 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-30 14:21:29,462 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 156 flow [2024-01-30 14:21:29,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-01-30 14:21:29,468 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 1 predicate places. [2024-01-30 14:21:29,468 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 156 flow [2024-01-30 14:21:29,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2024-01-30 14:21:29,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:29,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-30 14:21:29,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:21:29,469 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-30 14:21:29,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:29,470 INFO L85 PathProgramCache]: Analyzing trace with hash 8875966, now seen corresponding path program 1 times [2024-01-30 14:21:29,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:29,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885976214] [2024-01-30 14:21:29,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:29,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:29,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:29,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:29,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885976214] [2024-01-30 14:21:29,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885976214] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:29,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:29,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:21:29,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016991473] [2024-01-30 14:21:29,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:29,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:21:29,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:29,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:21:29,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:21:29,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 66 [2024-01-30 14:21:29,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2024-01-30 14:21:29,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:29,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 66 [2024-01-30 14:21:29,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:29,758 INFO L124 PetriNetUnfolderBase]: 151/522 cut-off events. [2024-01-30 14:21:29,758 INFO L125 PetriNetUnfolderBase]: For 100/102 co-relation queries the response was YES. [2024-01-30 14:21:29,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1049 conditions, 522 events. 151/522 cut-off events. For 100/102 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2772 event pairs, 66 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 1029. Up to 186 conditions per place. [2024-01-30 14:21:29,760 INFO L140 encePairwiseOnDemand]: 56/66 looper letters, 49 selfloop transitions, 12 changer transitions 1/84 dead transitions. [2024-01-30 14:21:29,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 84 transitions, 342 flow [2024-01-30 14:21:29,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:21:29,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:21:29,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2024-01-30 14:21:29,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2024-01-30 14:21:29,762 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 156 flow. Second operand 5 states and 190 transitions. [2024-01-30 14:21:29,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 84 transitions, 342 flow [2024-01-30 14:21:29,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 84 transitions, 328 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:21:29,764 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 172 flow [2024-01-30 14:21:29,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-01-30 14:21:29,765 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -1 predicate places. [2024-01-30 14:21:29,765 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 172 flow [2024-01-30 14:21:29,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2024-01-30 14:21:29,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:29,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:29,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:21:29,766 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-30 14:21:29,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:29,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1898074358, now seen corresponding path program 1 times [2024-01-30 14:21:29,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:29,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082379750] [2024-01-30 14:21:29,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:29,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:29,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:29,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:29,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082379750] [2024-01-30 14:21:29,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082379750] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:29,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:29,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:21:29,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965207157] [2024-01-30 14:21:29,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:29,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:21:29,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:29,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:21:29,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:21:29,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 66 [2024-01-30 14:21:29,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2024-01-30 14:21:29,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:29,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 66 [2024-01-30 14:21:29,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:30,040 INFO L124 PetriNetUnfolderBase]: 92/451 cut-off events. [2024-01-30 14:21:30,041 INFO L125 PetriNetUnfolderBase]: For 103/104 co-relation queries the response was YES. [2024-01-30 14:21:30,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 821 conditions, 451 events. 92/451 cut-off events. For 103/104 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2559 event pairs, 19 based on Foata normal form. 7/416 useless extension candidates. Maximal degree in co-relation 800. Up to 209 conditions per place. [2024-01-30 14:21:30,043 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 31 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-01-30 14:21:30,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 63 transitions, 252 flow [2024-01-30 14:21:30,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:21:30,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:21:30,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 175 transitions. [2024-01-30 14:21:30,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6628787878787878 [2024-01-30 14:21:30,047 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 172 flow. Second operand 4 states and 175 transitions. [2024-01-30 14:21:30,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 63 transitions, 252 flow [2024-01-30 14:21:30,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-30 14:21:30,051 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 172 flow [2024-01-30 14:21:30,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-01-30 14:21:30,052 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2024-01-30 14:21:30,052 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 172 flow [2024-01-30 14:21:30,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2024-01-30 14:21:30,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:30,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:30,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:21:30,053 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-30 14:21:30,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:30,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2006535766, now seen corresponding path program 1 times [2024-01-30 14:21:30,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:30,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519723716] [2024-01-30 14:21:30,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:30,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:30,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:30,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:30,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519723716] [2024-01-30 14:21:30,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519723716] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:30,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:30,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:21:30,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654879158] [2024-01-30 14:21:30,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:30,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:21:30,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:30,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:21:30,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:21:30,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 66 [2024-01-30 14:21:30,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-01-30 14:21:30,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:30,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 66 [2024-01-30 14:21:30,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:30,227 INFO L124 PetriNetUnfolderBase]: 146/489 cut-off events. [2024-01-30 14:21:30,227 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2024-01-30 14:21:30,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1049 conditions, 489 events. 146/489 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2483 event pairs, 19 based on Foata normal form. 8/487 useless extension candidates. Maximal degree in co-relation 1026. Up to 162 conditions per place. [2024-01-30 14:21:30,229 INFO L140 encePairwiseOnDemand]: 56/66 looper letters, 43 selfloop transitions, 7 changer transitions 1/67 dead transitions. [2024-01-30 14:21:30,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 67 transitions, 302 flow [2024-01-30 14:21:30,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:21:30,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:21:30,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-01-30 14:21:30,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5189393939393939 [2024-01-30 14:21:30,231 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 172 flow. Second operand 4 states and 137 transitions. [2024-01-30 14:21:30,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 67 transitions, 302 flow [2024-01-30 14:21:30,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 67 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:21:30,233 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 169 flow [2024-01-30 14:21:30,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2024-01-30 14:21:30,234 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -3 predicate places. [2024-01-30 14:21:30,234 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 169 flow [2024-01-30 14:21:30,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-01-30 14:21:30,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:30,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:30,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-30 14:21:30,235 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-30 14:21:30,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:30,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1402304505, now seen corresponding path program 1 times [2024-01-30 14:21:30,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:30,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982455392] [2024-01-30 14:21:30,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:30,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:30,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:30,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:30,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982455392] [2024-01-30 14:21:30,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982455392] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:30,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:30,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:21:30,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138320755] [2024-01-30 14:21:30,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:30,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:21:30,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:30,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:21:30,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:21:30,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 66 [2024-01-30 14:21:30,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2024-01-30 14:21:30,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:30,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 66 [2024-01-30 14:21:30,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:30,373 INFO L124 PetriNetUnfolderBase]: 117/375 cut-off events. [2024-01-30 14:21:30,373 INFO L125 PetriNetUnfolderBase]: For 222/224 co-relation queries the response was YES. [2024-01-30 14:21:30,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 375 events. 117/375 cut-off events. For 222/224 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1605 event pairs, 18 based on Foata normal form. 46/407 useless extension candidates. Maximal degree in co-relation 809. Up to 161 conditions per place. [2024-01-30 14:21:30,374 INFO L140 encePairwiseOnDemand]: 57/66 looper letters, 39 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-01-30 14:21:30,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 57 transitions, 261 flow [2024-01-30 14:21:30,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:21:30,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:21:30,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-01-30 14:21:30,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2024-01-30 14:21:30,375 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 169 flow. Second operand 4 states and 148 transitions. [2024-01-30 14:21:30,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 57 transitions, 261 flow [2024-01-30 14:21:30,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 251 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:21:30,376 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 143 flow [2024-01-30 14:21:30,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-01-30 14:21:30,377 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -7 predicate places. [2024-01-30 14:21:30,377 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 143 flow [2024-01-30 14:21:30,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2024-01-30 14:21:30,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:30,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:30,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-30 14:21:30,377 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-30 14:21:30,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:30,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2134679873, now seen corresponding path program 1 times [2024-01-30 14:21:30,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:30,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041153216] [2024-01-30 14:21:30,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:30,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:30,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:30,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:30,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041153216] [2024-01-30 14:21:30,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041153216] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:30,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:30,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:21:30,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772719307] [2024-01-30 14:21:30,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:30,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:21:30,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:30,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:21:30,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:21:30,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 66 [2024-01-30 14:21:30,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2024-01-30 14:21:30,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:30,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 66 [2024-01-30 14:21:30,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:30,499 INFO L124 PetriNetUnfolderBase]: 47/218 cut-off events. [2024-01-30 14:21:30,499 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-01-30 14:21:30,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 218 events. 47/218 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 836 event pairs, 17 based on Foata normal form. 6/212 useless extension candidates. Maximal degree in co-relation 416. Up to 85 conditions per place. [2024-01-30 14:21:30,500 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 22 selfloop transitions, 5 changer transitions 7/55 dead transitions. [2024-01-30 14:21:30,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 55 transitions, 233 flow [2024-01-30 14:21:30,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:21:30,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:21:30,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-01-30 14:21:30,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2024-01-30 14:21:30,501 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 143 flow. Second operand 3 states and 153 transitions. [2024-01-30 14:21:30,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 55 transitions, 233 flow [2024-01-30 14:21:30,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 211 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-30 14:21:30,504 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 127 flow [2024-01-30 14:21:30,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2024-01-30 14:21:30,506 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -11 predicate places. [2024-01-30 14:21:30,506 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 127 flow [2024-01-30 14:21:30,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2024-01-30 14:21:30,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:30,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:30,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-30 14:21:30,507 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-30 14:21:30,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:30,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1840921778, now seen corresponding path program 1 times [2024-01-30 14:21:30,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:30,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75433556] [2024-01-30 14:21:30,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:30,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:30,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:30,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:30,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75433556] [2024-01-30 14:21:30,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75433556] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:30,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:30,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:21:30,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128774327] [2024-01-30 14:21:30,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:30,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:21:30,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:30,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:21:30,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:21:30,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 66 [2024-01-30 14:21:30,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 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) [2024-01-30 14:21:30,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:30,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 66 [2024-01-30 14:21:30,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:30,651 INFO L124 PetriNetUnfolderBase]: 16/109 cut-off events. [2024-01-30 14:21:30,651 INFO L125 PetriNetUnfolderBase]: For 46/47 co-relation queries the response was YES. [2024-01-30 14:21:30,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 109 events. 16/109 cut-off events. For 46/47 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 250 event pairs, 0 based on Foata normal form. 6/110 useless extension candidates. Maximal degree in co-relation 195. Up to 51 conditions per place. [2024-01-30 14:21:30,651 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 15 selfloop transitions, 4 changer transitions 3/38 dead transitions. [2024-01-30 14:21:30,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 38 transitions, 152 flow [2024-01-30 14:21:30,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:21:30,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:21:30,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 178 transitions. [2024-01-30 14:21:30,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6742424242424242 [2024-01-30 14:21:30,652 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 127 flow. Second operand 4 states and 178 transitions. [2024-01-30 14:21:30,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 38 transitions, 152 flow [2024-01-30 14:21:30,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 38 transitions, 125 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-30 14:21:30,654 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 81 flow [2024-01-30 14:21:30,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=81, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-01-30 14:21:30,655 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -20 predicate places. [2024-01-30 14:21:30,655 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 81 flow [2024-01-30 14:21:30,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 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) [2024-01-30 14:21:30,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:30,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:30,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-30 14:21:30,655 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-30 14:21:30,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:30,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1356404544, now seen corresponding path program 1 times [2024-01-30 14:21:30,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:30,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084421500] [2024-01-30 14:21:30,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:30,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:30,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:30,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:30,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084421500] [2024-01-30 14:21:30,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084421500] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:30,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:30,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:21:30,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726523924] [2024-01-30 14:21:30,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:30,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:21:30,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:30,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:21:30,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:21:30,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 66 [2024-01-30 14:21:30,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2024-01-30 14:21:30,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:30,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 66 [2024-01-30 14:21:30,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:30,781 INFO L124 PetriNetUnfolderBase]: 20/90 cut-off events. [2024-01-30 14:21:30,781 INFO L125 PetriNetUnfolderBase]: For 10/11 co-relation queries the response was YES. [2024-01-30 14:21:30,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 90 events. 20/90 cut-off events. For 10/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 164 event pairs, 6 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 163. Up to 31 conditions per place. [2024-01-30 14:21:30,781 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2024-01-30 14:21:30,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 137 flow [2024-01-30 14:21:30,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:21:30,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:21:30,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-01-30 14:21:30,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.571969696969697 [2024-01-30 14:21:30,782 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 81 flow. Second operand 4 states and 151 transitions. [2024-01-30 14:21:30,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 137 flow [2024-01-30 14:21:30,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 129 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:21:30,783 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2024-01-30 14:21:30,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2024-01-30 14:21:30,785 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -25 predicate places. [2024-01-30 14:21:30,785 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2024-01-30 14:21:30,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2024-01-30 14:21:30,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 29 remaining) [2024-01-30 14:21:30,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (27 of 29 remaining) [2024-01-30 14:21:30,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 29 remaining) [2024-01-30 14:21:30,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 29 remaining) [2024-01-30 14:21:30,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (24 of 29 remaining) [2024-01-30 14:21:30,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 29 remaining) [2024-01-30 14:21:30,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 29 remaining) [2024-01-30 14:21:30,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 29 remaining) [2024-01-30 14:21:30,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 29 remaining) [2024-01-30 14:21:30,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 29 remaining) [2024-01-30 14:21:30,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 29 remaining) [2024-01-30 14:21:30,789 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 29 remaining) [2024-01-30 14:21:30,789 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 29 remaining) [2024-01-30 14:21:30,789 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONERROR_FUNCTION (15 of 29 remaining) [2024-01-30 14:21:30,789 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 29 remaining) [2024-01-30 14:21:30,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 29 remaining) [2024-01-30 14:21:30,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 29 remaining) [2024-01-30 14:21:30,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr10ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 29 remaining) [2024-01-30 14:21:30,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 29 remaining) [2024-01-30 14:21:30,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 29 remaining) [2024-01-30 14:21:30,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 29 remaining) [2024-01-30 14:21:30,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 29 remaining) [2024-01-30 14:21:30,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 29 remaining) [2024-01-30 14:21:30,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 29 remaining) [2024-01-30 14:21:30,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONERROR_FUNCTION (4 of 29 remaining) [2024-01-30 14:21:30,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 29 remaining) [2024-01-30 14:21:30,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 29 remaining) [2024-01-30 14:21:30,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 29 remaining) [2024-01-30 14:21:30,791 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr10ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 29 remaining) [2024-01-30 14:21:30,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-30 14:21:30,791 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:30,795 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-30 14:21:30,795 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-30 14:21:30,800 INFO L503 ceAbstractionStarter]: Automizer considered 14 witness invariants [2024-01-30 14:21:30,800 INFO L504 ceAbstractionStarter]: WitnessConsidered=14 [2024-01-30 14:21:30,800 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:21:30 BasicIcfg [2024-01-30 14:21:30,801 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-30 14:21:30,801 INFO L158 Benchmark]: Toolchain (without parser) took 3004.26ms. Allocated memory was 199.2MB in the beginning and 239.1MB in the end (delta: 39.8MB). Free memory was 169.7MB in the beginning and 130.8MB in the end (delta: 38.9MB). Peak memory consumption was 77.5MB. Max. memory is 16.1GB. [2024-01-30 14:21:30,801 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 146.8MB. Free memory was 112.2MB in the beginning and 112.2MB in the end (delta: 76.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:21:30,801 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 146.8MB. Free memory was 76.4MB in the beginning and 76.3MB in the end (delta: 80.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:21:30,801 INFO L158 Benchmark]: CACSL2BoogieTranslator took 419.80ms. Allocated memory is still 199.2MB. Free memory was 169.7MB in the beginning and 146.6MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-01-30 14:21:30,802 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.97ms. Allocated memory is still 199.2MB. Free memory was 146.6MB in the beginning and 144.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-30 14:21:30,803 INFO L158 Benchmark]: Boogie Preprocessor took 58.96ms. Allocated memory is still 199.2MB. Free memory was 144.5MB in the beginning and 141.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-30 14:21:30,803 INFO L158 Benchmark]: RCFGBuilder took 446.59ms. Allocated memory is still 199.2MB. Free memory was 141.7MB in the beginning and 112.3MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-01-30 14:21:30,803 INFO L158 Benchmark]: TraceAbstraction took 2014.44ms. Allocated memory was 199.2MB in the beginning and 239.1MB in the end (delta: 39.8MB). Free memory was 112.3MB in the beginning and 130.8MB in the end (delta: -18.5MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2024-01-30 14:21:30,804 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 146.8MB. Free memory was 112.2MB in the beginning and 112.2MB in the end (delta: 76.8kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 146.8MB. Free memory was 76.4MB in the beginning and 76.3MB in the end (delta: 80.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 419.80ms. Allocated memory is still 199.2MB. Free memory was 169.7MB in the beginning and 146.6MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.97ms. Allocated memory is still 199.2MB. Free memory was 146.6MB in the beginning and 144.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.96ms. Allocated memory is still 199.2MB. Free memory was 144.5MB in the beginning and 141.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 446.59ms. Allocated memory is still 199.2MB. Free memory was 141.7MB in the beginning and 112.3MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2014.44ms. Allocated memory was 199.2MB in the beginning and 239.1MB in the end (delta: 39.8MB). Free memory was 112.3MB in the beginning and 130.8MB in the end (delta: -18.5MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 699]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 701]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 702]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 685]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 686]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 687]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 688]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 689]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 690]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 691]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 692]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 693]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 694]: 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 3 procedures, 103 locations, 29 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: 1.9s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 477 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 322 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 77 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 636 IncrementalHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 77 mSolverCounterUnsat, 18 mSDtfsCounter, 636 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=2, InterpolantAutomatonStates: 31, 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, 0.5s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 390 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 17 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-30 14:21:30,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE