./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_37-traces-ex-4_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_37-traces-ex-4_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8857f20b 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_37-traces-ex-4_true.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_37-traces-ex-4_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-8857f20-m [2024-01-29 22:55:23,395 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-29 22:55:23,456 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-29 22:55:23,461 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-29 22:55:23,462 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-29 22:55:23,493 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-29 22:55:23,493 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-29 22:55:23,494 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-29 22:55:23,494 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-29 22:55:23,494 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-29 22:55:23,495 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-29 22:55:23,495 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-29 22:55:23,496 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-29 22:55:23,496 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-29 22:55:23,496 INFO L153 SettingsManager]: * Use SBE=true [2024-01-29 22:55:23,496 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-29 22:55:23,497 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-29 22:55:23,497 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-29 22:55:23,497 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-29 22:55:23,498 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-29 22:55:23,498 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-29 22:55:23,499 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-29 22:55:23,502 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-29 22:55:23,503 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-29 22:55:23,505 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-29 22:55:23,505 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-29 22:55:23,506 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-29 22:55:23,506 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-29 22:55:23,507 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-29 22:55:23,507 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-29 22:55:23,508 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-29 22:55:23,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-29 22:55:23,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 22:55:23,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-29 22:55:23,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-29 22:55:23,509 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-29 22:55:23,509 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-29 22:55:23,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-29 22:55:23,510 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-29 22:55:23,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-29 22:55:23,510 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-29 22:55:23,511 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-29 22:55:23,511 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-29 22:55:23,511 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-29 22:55:23,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-29 22:55:23,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-29 22:55:23,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-29 22:55:23,766 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-29 22:55:23,766 INFO L274 PluginConnector]: CDTParser initialized [2024-01-29 22:55:23,767 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_37-traces-ex-4_true.i [2024-01-29 22:55:24,856 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-29 22:55:25,128 INFO L384 CDTParser]: Found 1 translation units. [2024-01-29 22:55:25,129 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_37-traces-ex-4_true.i [2024-01-29 22:55:25,140 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/098994146/efc67b3d76c34522a62daddd38c720dd/FLAG8e2bf3972 [2024-01-29 22:55:25,153 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/098994146/efc67b3d76c34522a62daddd38c720dd [2024-01-29 22:55:25,155 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-29 22:55:25,156 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-29 22:55:25,156 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_37-traces-ex-4_true.yml/witness.yml [2024-01-29 22:55:25,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-29 22:55:25,239 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-29 22:55:25,241 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-29 22:55:25,241 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-29 22:55:25,247 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-29 22:55:25,248 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:55:25" (1/2) ... [2024-01-29 22:55:25,249 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d2943f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:55:25, skipping insertion in model container [2024-01-29 22:55:25,249 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:55:25" (1/2) ... [2024-01-29 22:55:25,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1ce223fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:55:25, skipping insertion in model container [2024-01-29 22:55:25,251 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:55:25" (2/2) ... [2024-01-29 22:55:25,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d2943f5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:55:25, skipping insertion in model container [2024-01-29 22:55:25,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:55:25" (2/2) ... [2024-01-29 22:55:25,252 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-29 22:55:25,283 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-29 22:55:25,284 INFO L98 nessWitnessExtractor]: Location invariant before [L688-L688] (g == 1) && ((unsigned long )arg == 0UL) [2024-01-29 22:55:25,284 INFO L98 nessWitnessExtractor]: Location invariant before [L688-L688] g == 1 [2024-01-29 22:55:25,284 INFO L98 nessWitnessExtractor]: Location invariant before [L699-L699] g == 2 [2024-01-29 22:55:25,284 INFO L98 nessWitnessExtractor]: Location invariant before [L687-L687] (g == 2) && ((unsigned long )arg == 0UL) [2024-01-29 22:55:25,284 INFO L98 nessWitnessExtractor]: Location invariant before [L687-L687] g == 2 [2024-01-29 22:55:25,285 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] g == 2 [2024-01-29 22:55:25,285 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] (g == 2) && ((unsigned long )arg == 0UL) [2024-01-29 22:55:25,285 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] g == 1 [2024-01-29 22:55:25,285 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] (g == 1) && ((unsigned long )arg == 0UL) [2024-01-29 22:55:25,285 INFO L98 nessWitnessExtractor]: Location invariant before [L697-L697] g == 2 [2024-01-29 22:55:25,285 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-29 22:55:25,285 INFO L98 nessWitnessExtractor]: Location invariant before [L700-L700] g == 2 [2024-01-29 22:55:25,286 INFO L98 nessWitnessExtractor]: Location invariant before [L686-L686] (g == 2) && ((unsigned long )arg == 0UL) [2024-01-29 22:55:25,286 INFO L98 nessWitnessExtractor]: Location invariant before [L686-L686] g == 2 [2024-01-29 22:55:25,286 INFO L98 nessWitnessExtractor]: Location invariant before [L689-L689] (g == 1) && ((unsigned long )arg == 0UL) [2024-01-29 22:55:25,286 INFO L98 nessWitnessExtractor]: Location invariant before [L689-L689] g == 1 [2024-01-29 22:55:25,286 INFO L98 nessWitnessExtractor]: Location invariant before [L701-L701] g == 2 [2024-01-29 22:55:25,286 INFO L98 nessWitnessExtractor]: Location invariant before [L685-L685] (unsigned long )arg == 0UL [2024-01-29 22:55:25,286 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] g == 2 [2024-01-29 22:55:25,287 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] (g == 2) && ((unsigned long )arg == 0UL) [2024-01-29 22:55:25,287 INFO L98 nessWitnessExtractor]: Location invariant before [L702-L702] g == 2 [2024-01-29 22:55:25,287 INFO L98 nessWitnessExtractor]: Location invariant before [L19-L19] (g == 2) && (g == 2) [2024-01-29 22:55:25,288 INFO L98 nessWitnessExtractor]: Location invariant before [L19-L19] g == 2 [2024-01-29 22:55:25,326 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-29 22:55:25,505 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_37-traces-ex-4_true.i[1088,1101] [2024-01-29 22:55:25,642 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 22:55:25,662 INFO L202 MainTranslator]: Completed pre-run [2024-01-29 22:55:25,674 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_37-traces-ex-4_true.i[1088,1101] [2024-01-29 22:55:25,674 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 Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 22:55:25,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 22:55:25,848 INFO L206 MainTranslator]: Completed translation [2024-01-29 22:55:25,855 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:55:25 WrapperNode [2024-01-29 22:55:25,856 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-29 22:55:25,857 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-29 22:55:25,857 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-29 22:55:25,857 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-29 22:55:25,863 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 29.01 10:55:25" (1/1) ... [2024-01-29 22:55:25,910 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 29.01 10:55:25" (1/1) ... [2024-01-29 22:55:25,950 INFO L138 Inliner]: procedures = 163, calls = 34, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2024-01-29 22:55:25,950 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-29 22:55:25,951 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-29 22:55:25,951 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-29 22:55:25,951 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-29 22:55:25,961 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:55:25" (1/1) ... [2024-01-29 22:55:25,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:55:25" (1/1) ... [2024-01-29 22:55:25,984 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:55:25" (1/1) ... [2024-01-29 22:55:26,012 INFO L175 MemorySlicer]: Split 13 memory accesses to 4 slices as follows [2, 5, 5, 1]. 38 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]. [2024-01-29 22:55:26,012 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:55:25" (1/1) ... [2024-01-29 22:55:26,012 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:55:25" (1/1) ... [2024-01-29 22:55:26,029 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:55:25" (1/1) ... [2024-01-29 22:55:26,031 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:55:25" (1/1) ... [2024-01-29 22:55:26,035 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:55:25" (1/1) ... [2024-01-29 22:55:26,037 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:55:25" (1/1) ... [2024-01-29 22:55:26,042 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-29 22:55:26,043 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-29 22:55:26,043 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-29 22:55:26,044 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-29 22:55:26,044 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:55:25" (1/1) ... [2024-01-29 22:55:26,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 22:55:26,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:55:26,069 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) [2024-01-29 22:55:26,089 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 [2024-01-29 22:55:26,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-29 22:55:26,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-29 22:55:26,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-29 22:55:26,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-29 22:55:26,110 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-29 22:55:26,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-29 22:55:26,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-29 22:55:26,111 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-01-29 22:55:26,111 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-01-29 22:55:26,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-29 22:55:26,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-29 22:55:26,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-29 22:55:26,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-29 22:55:26,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-29 22:55:26,112 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-29 22:55:26,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-29 22:55:26,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-29 22:55:26,113 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-29 22:55:26,254 INFO L244 CfgBuilder]: Building ICFG [2024-01-29 22:55:26,256 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-29 22:55:26,595 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-29 22:55:26,595 INFO L293 CfgBuilder]: Performing block encoding [2024-01-29 22:55:26,740 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-29 22:55:26,740 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-29 22:55:26,742 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:55:26 BoogieIcfgContainer [2024-01-29 22:55:26,742 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-29 22:55:26,744 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-29 22:55:26,744 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-29 22:55:26,746 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-29 22:55:26,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 10:55:25" (1/4) ... [2024-01-29 22:55:26,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@239a96b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 10:55:26, skipping insertion in model container [2024-01-29 22:55:26,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:55:25" (2/4) ... [2024-01-29 22:55:26,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@239a96b3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 10:55:26, skipping insertion in model container [2024-01-29 22:55:26,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:55:25" (3/4) ... [2024-01-29 22:55:26,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@239a96b3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 10:55:26, skipping insertion in model container [2024-01-29 22:55:26,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:55:26" (4/4) ... [2024-01-29 22:55:26,754 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_37-traces-ex-4_true.i [2024-01-29 22:55:26,780 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-29 22:55:26,780 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-01-29 22:55:26,780 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-29 22:55:26,868 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 22:55:26,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 72 transitions, 148 flow [2024-01-29 22:55:26,913 INFO L124 PetriNetUnfolderBase]: 1/71 cut-off events. [2024-01-29 22:55:26,914 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:55:26,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 71 events. 1/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-01-29 22:55:26,917 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 72 transitions, 148 flow [2024-01-29 22:55:26,919 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 71 transitions, 145 flow [2024-01-29 22:55:26,926 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 22:55:26,932 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;@1cf9db97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 22:55:26,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-01-29 22:55:26,934 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 22:55:26,934 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 22:55:26,934 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:55:26,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:26,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 22:55:26,935 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-01-29 22:55:26,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:26,939 INFO L85 PathProgramCache]: Analyzing trace with hash 8518, now seen corresponding path program 1 times [2024-01-29 22:55:26,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:26,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721160179] [2024-01-29 22:55:26,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:26,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:27,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:27,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:27,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721160179] [2024-01-29 22:55:27,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721160179] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:27,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:27,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 22:55:27,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923028388] [2024-01-29 22:55:27,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:27,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:55:27,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:27,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:55:27,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:55:27,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 72 [2024-01-29 22:55:27,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 71 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:55:27,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:27,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 72 [2024-01-29 22:55:27,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:27,351 INFO L124 PetriNetUnfolderBase]: 269/932 cut-off events. [2024-01-29 22:55:27,352 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:55:27,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1608 conditions, 932 events. 269/932 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5820 event pairs, 171 based on Foata normal form. 83/967 useless extension candidates. Maximal degree in co-relation 1597. Up to 459 conditions per place. [2024-01-29 22:55:27,358 INFO L140 encePairwiseOnDemand]: 50/72 looper letters, 45 selfloop transitions, 7 changer transitions 0/78 dead transitions. [2024-01-29 22:55:27,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 78 transitions, 263 flow [2024-01-29 22:55:27,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:55:27,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:55:27,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-01-29 22:55:27,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2024-01-29 22:55:27,368 INFO L175 Difference]: Start difference. First operand has 74 places, 71 transitions, 145 flow. Second operand 3 states and 150 transitions. [2024-01-29 22:55:27,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 78 transitions, 263 flow [2024-01-29 22:55:27,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 78 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 22:55:27,373 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 194 flow [2024-01-29 22:55:27,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2024-01-29 22:55:27,377 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -2 predicate places. [2024-01-29 22:55:27,377 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 194 flow [2024-01-29 22:55:27,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:55:27,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:27,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-29 22:55:27,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-29 22:55:27,378 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-01-29 22:55:27,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:27,378 INFO L85 PathProgramCache]: Analyzing trace with hash 254104825, now seen corresponding path program 1 times [2024-01-29 22:55:27,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:27,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754740468] [2024-01-29 22:55:27,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:27,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:27,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:27,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:27,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754740468] [2024-01-29 22:55:27,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754740468] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:27,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:27,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:55:27,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645378522] [2024-01-29 22:55:27,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:27,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:55:27,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:27,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:55:27,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:55:27,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 72 [2024-01-29 22:55:27,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 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) [2024-01-29 22:55:27,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:27,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 72 [2024-01-29 22:55:27,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:27,616 INFO L124 PetriNetUnfolderBase]: 133/753 cut-off events. [2024-01-29 22:55:27,616 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-01-29 22:55:27,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1285 conditions, 753 events. 133/753 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5143 event pairs, 35 based on Foata normal form. 9/704 useless extension candidates. Maximal degree in co-relation 1271. Up to 266 conditions per place. [2024-01-29 22:55:27,620 INFO L140 encePairwiseOnDemand]: 68/72 looper letters, 28 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-01-29 22:55:27,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 75 transitions, 268 flow [2024-01-29 22:55:27,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:55:27,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:55:27,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 223 transitions. [2024-01-29 22:55:27,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7743055555555556 [2024-01-29 22:55:27,623 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 194 flow. Second operand 4 states and 223 transitions. [2024-01-29 22:55:27,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 75 transitions, 268 flow [2024-01-29 22:55:27,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 75 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:55:27,626 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 180 flow [2024-01-29 22:55:27,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2024-01-29 22:55:27,626 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -3 predicate places. [2024-01-29 22:55:27,627 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 180 flow [2024-01-29 22:55:27,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 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) [2024-01-29 22:55:27,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:27,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:55:27,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-29 22:55:27,628 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-01-29 22:55:27,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:27,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1566576356, now seen corresponding path program 1 times [2024-01-29 22:55:27,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:27,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379238348] [2024-01-29 22:55:27,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:27,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:27,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:27,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:27,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379238348] [2024-01-29 22:55:27,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379238348] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:27,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:27,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 22:55:27,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130894799] [2024-01-29 22:55:27,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:27,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:55:27,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:27,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:55:27,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:55:27,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 72 [2024-01-29 22:55:27,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2024-01-29 22:55:27,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:27,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 72 [2024-01-29 22:55:27,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:27,866 INFO L124 PetriNetUnfolderBase]: 302/962 cut-off events. [2024-01-29 22:55:27,866 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-01-29 22:55:27,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1990 conditions, 962 events. 302/962 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5838 event pairs, 61 based on Foata normal form. 12/915 useless extension candidates. Maximal degree in co-relation 1976. Up to 327 conditions per place. [2024-01-29 22:55:27,870 INFO L140 encePairwiseOnDemand]: 60/72 looper letters, 57 selfloop transitions, 9 changer transitions 0/84 dead transitions. [2024-01-29 22:55:27,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 84 transitions, 354 flow [2024-01-29 22:55:27,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:55:27,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:55:27,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-01-29 22:55:27,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-01-29 22:55:27,872 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 180 flow. Second operand 4 states and 145 transitions. [2024-01-29 22:55:27,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 84 transitions, 354 flow [2024-01-29 22:55:27,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 84 transitions, 351 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:55:27,875 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 189 flow [2024-01-29 22:55:27,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2024-01-29 22:55:27,876 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -5 predicate places. [2024-01-29 22:55:27,876 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 189 flow [2024-01-29 22:55:27,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2024-01-29 22:55:27,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:27,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:55:27,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-29 22:55:27,877 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-01-29 22:55:27,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:27,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1878010369, now seen corresponding path program 1 times [2024-01-29 22:55:27,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:27,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571021113] [2024-01-29 22:55:27,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:27,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:27,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:27,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:27,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571021113] [2024-01-29 22:55:27,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571021113] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:27,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:27,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:55:27,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265712737] [2024-01-29 22:55:27,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:27,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:55:27,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:27,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:55:27,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:55:27,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 72 [2024-01-29 22:55:27,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2024-01-29 22:55:27,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:27,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 72 [2024-01-29 22:55:27,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:28,109 INFO L124 PetriNetUnfolderBase]: 292/916 cut-off events. [2024-01-29 22:55:28,109 INFO L125 PetriNetUnfolderBase]: For 180/183 co-relation queries the response was YES. [2024-01-29 22:55:28,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1988 conditions, 916 events. 292/916 cut-off events. For 180/183 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5439 event pairs, 158 based on Foata normal form. 3/916 useless extension candidates. Maximal degree in co-relation 1974. Up to 414 conditions per place. [2024-01-29 22:55:28,113 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 58 selfloop transitions, 12 changer transitions 7/95 dead transitions. [2024-01-29 22:55:28,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 95 transitions, 425 flow [2024-01-29 22:55:28,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 22:55:28,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 22:55:28,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 204 transitions. [2024-01-29 22:55:28,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-01-29 22:55:28,116 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 189 flow. Second operand 5 states and 204 transitions. [2024-01-29 22:55:28,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 95 transitions, 425 flow [2024-01-29 22:55:28,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 95 transitions, 401 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 22:55:28,122 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 201 flow [2024-01-29 22:55:28,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=201, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-01-29 22:55:28,124 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -6 predicate places. [2024-01-29 22:55:28,125 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 201 flow [2024-01-29 22:55:28,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2024-01-29 22:55:28,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:28,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:55:28,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-29 22:55:28,125 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-01-29 22:55:28,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:28,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1439296544, now seen corresponding path program 1 times [2024-01-29 22:55:28,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:28,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877769124] [2024-01-29 22:55:28,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:28,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:28,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:28,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:28,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877769124] [2024-01-29 22:55:28,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877769124] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:28,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:28,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 22:55:28,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372978706] [2024-01-29 22:55:28,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:28,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:55:28,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:28,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:55:28,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:55:28,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 72 [2024-01-29 22:55:28,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 201 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2024-01-29 22:55:28,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:28,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 72 [2024-01-29 22:55:28,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:28,282 INFO L124 PetriNetUnfolderBase]: 219/677 cut-off events. [2024-01-29 22:55:28,282 INFO L125 PetriNetUnfolderBase]: For 212/214 co-relation queries the response was YES. [2024-01-29 22:55:28,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1457 conditions, 677 events. 219/677 cut-off events. For 212/214 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3595 event pairs, 162 based on Foata normal form. 72/739 useless extension candidates. Maximal degree in co-relation 1443. Up to 346 conditions per place. [2024-01-29 22:55:28,285 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 40 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2024-01-29 22:55:28,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 64 transitions, 271 flow [2024-01-29 22:55:28,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:55:28,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:55:28,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2024-01-29 22:55:28,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2024-01-29 22:55:28,287 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 201 flow. Second operand 3 states and 148 transitions. [2024-01-29 22:55:28,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 64 transitions, 271 flow [2024-01-29 22:55:28,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 64 transitions, 271 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-29 22:55:28,288 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 179 flow [2024-01-29 22:55:28,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2024-01-29 22:55:28,291 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -7 predicate places. [2024-01-29 22:55:28,291 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 179 flow [2024-01-29 22:55:28,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2024-01-29 22:55:28,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:28,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:55:28,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-29 22:55:28,292 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-01-29 22:55:28,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:28,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1668519583, now seen corresponding path program 1 times [2024-01-29 22:55:28,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:28,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245645179] [2024-01-29 22:55:28,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:28,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:28,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:28,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:28,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245645179] [2024-01-29 22:55:28,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245645179] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:28,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:28,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:55:28,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854590719] [2024-01-29 22:55:28,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:28,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:55:28,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:28,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:55:28,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:55:28,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 72 [2024-01-29 22:55:28,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2024-01-29 22:55:28,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:28,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 72 [2024-01-29 22:55:28,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:28,540 INFO L124 PetriNetUnfolderBase]: 241/695 cut-off events. [2024-01-29 22:55:28,540 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2024-01-29 22:55:28,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1573 conditions, 695 events. 241/695 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3496 event pairs, 31 based on Foata normal form. 38/727 useless extension candidates. Maximal degree in co-relation 1558. Up to 354 conditions per place. [2024-01-29 22:55:28,543 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 52 selfloop transitions, 5 changer transitions 0/72 dead transitions. [2024-01-29 22:55:28,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 72 transitions, 333 flow [2024-01-29 22:55:28,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:55:28,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:55:28,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-01-29 22:55:28,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-01-29 22:55:28,544 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 179 flow. Second operand 4 states and 162 transitions. [2024-01-29 22:55:28,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 72 transitions, 333 flow [2024-01-29 22:55:28,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 72 transitions, 325 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:55:28,548 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 175 flow [2024-01-29 22:55:28,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-01-29 22:55:28,550 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -9 predicate places. [2024-01-29 22:55:28,550 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 175 flow [2024-01-29 22:55:28,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2024-01-29 22:55:28,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:28,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:55:28,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-29 22:55:28,551 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-01-29 22:55:28,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:28,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1603253734, now seen corresponding path program 1 times [2024-01-29 22:55:28,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:28,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644998593] [2024-01-29 22:55:28,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:28,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:28,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:28,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644998593] [2024-01-29 22:55:28,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644998593] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:28,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:28,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:55:28,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860094455] [2024-01-29 22:55:28,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:28,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:55:28,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:28,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:55:28,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:55:28,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 72 [2024-01-29 22:55:28,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2024-01-29 22:55:28,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:28,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 72 [2024-01-29 22:55:28,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:28,686 INFO L124 PetriNetUnfolderBase]: 66/313 cut-off events. [2024-01-29 22:55:28,687 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2024-01-29 22:55:28,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 313 events. 66/313 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1477 event pairs, 31 based on Foata normal form. 7/304 useless extension candidates. Maximal degree in co-relation 603. Up to 110 conditions per place. [2024-01-29 22:55:28,688 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 23 selfloop transitions, 6 changer transitions 6/65 dead transitions. [2024-01-29 22:55:28,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 65 transitions, 265 flow [2024-01-29 22:55:28,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:55:28,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:55:28,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 190 transitions. [2024-01-29 22:55:28,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8796296296296297 [2024-01-29 22:55:28,689 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 175 flow. Second operand 3 states and 190 transitions. [2024-01-29 22:55:28,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 65 transitions, 265 flow [2024-01-29 22:55:28,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 231 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-01-29 22:55:28,694 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 159 flow [2024-01-29 22:55:28,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-01-29 22:55:28,695 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -15 predicate places. [2024-01-29 22:55:28,695 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 159 flow [2024-01-29 22:55:28,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2024-01-29 22:55:28,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:28,696 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] [2024-01-29 22:55:28,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-29 22:55:28,696 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-01-29 22:55:28,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:28,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1065785080, now seen corresponding path program 1 times [2024-01-29 22:55:28,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:28,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396017564] [2024-01-29 22:55:28,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:28,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:28,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:28,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:28,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396017564] [2024-01-29 22:55:28,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396017564] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:28,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:28,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 22:55:28,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707756874] [2024-01-29 22:55:28,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:28,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-29 22:55:28,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:28,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-29 22:55:28,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-29 22:55:28,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 72 [2024-01-29 22:55:28,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 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) [2024-01-29 22:55:28,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:28,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 72 [2024-01-29 22:55:28,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:28,877 INFO L124 PetriNetUnfolderBase]: 25/178 cut-off events. [2024-01-29 22:55:28,877 INFO L125 PetriNetUnfolderBase]: For 42/43 co-relation queries the response was YES. [2024-01-29 22:55:28,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 178 events. 25/178 cut-off events. For 42/43 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 479 event pairs, 6 based on Foata normal form. 6/178 useless extension candidates. Maximal degree in co-relation 321. Up to 62 conditions per place. [2024-01-29 22:55:28,878 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 15 selfloop transitions, 4 changer transitions 8/51 dead transitions. [2024-01-29 22:55:28,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 51 transitions, 189 flow [2024-01-29 22:55:28,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:55:28,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:55:28,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 229 transitions. [2024-01-29 22:55:28,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7951388888888888 [2024-01-29 22:55:28,881 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 159 flow. Second operand 4 states and 229 transitions. [2024-01-29 22:55:28,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 51 transitions, 189 flow [2024-01-29 22:55:28,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 51 transitions, 155 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-01-29 22:55:28,882 INFO L231 Difference]: Finished difference. Result has 56 places, 41 transitions, 97 flow [2024-01-29 22:55:28,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=56, PETRI_TRANSITIONS=41} [2024-01-29 22:55:28,884 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -18 predicate places. [2024-01-29 22:55:28,884 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 41 transitions, 97 flow [2024-01-29 22:55:28,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 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) [2024-01-29 22:55:28,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:28,884 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, 1] [2024-01-29 22:55:28,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-29 22:55:28,885 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr11ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-01-29 22:55:28,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:28,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1750035592, now seen corresponding path program 1 times [2024-01-29 22:55:28,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:28,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768259294] [2024-01-29 22:55:28,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:28,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:28,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:28,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768259294] [2024-01-29 22:55:28,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768259294] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:28,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:28,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:55:28,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340759981] [2024-01-29 22:55:28,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:28,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:55:28,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:28,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:55:28,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:55:28,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 72 [2024-01-29 22:55:28,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 41 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2024-01-29 22:55:28,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:28,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 72 [2024-01-29 22:55:28,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:29,035 INFO L124 PetriNetUnfolderBase]: 56/197 cut-off events. [2024-01-29 22:55:29,036 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-01-29 22:55:29,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 197 events. 56/197 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 546 event pairs, 12 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 393. Up to 73 conditions per place. [2024-01-29 22:55:29,036 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2024-01-29 22:55:29,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 62 transitions, 259 flow [2024-01-29 22:55:29,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:55:29,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:55:29,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-01-29 22:55:29,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548611111111111 [2024-01-29 22:55:29,038 INFO L175 Difference]: Start difference. First operand has 56 places, 41 transitions, 97 flow. Second operand 4 states and 131 transitions. [2024-01-29 22:55:29,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 62 transitions, 259 flow [2024-01-29 22:55:29,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 62 transitions, 243 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 22:55:29,038 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2024-01-29 22:55:29,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2024-01-29 22:55:29,039 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -26 predicate places. [2024-01-29 22:55:29,039 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2024-01-29 22:55:29,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2024-01-29 22:55:29,042 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 39 remaining) [2024-01-29 22:55:29,042 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 39 remaining) [2024-01-29 22:55:29,042 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 39 remaining) [2024-01-29 22:55:29,042 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (35 of 39 remaining) [2024-01-29 22:55:29,042 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 39 remaining) [2024-01-29 22:55:29,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 39 remaining) [2024-01-29 22:55:29,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 39 remaining) [2024-01-29 22:55:29,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 39 remaining) [2024-01-29 22:55:29,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 39 remaining) [2024-01-29 22:55:29,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 39 remaining) [2024-01-29 22:55:29,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 39 remaining) [2024-01-29 22:55:29,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 39 remaining) [2024-01-29 22:55:29,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 39 remaining) [2024-01-29 22:55:29,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 39 remaining) [2024-01-29 22:55:29,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 39 remaining) [2024-01-29 22:55:29,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 39 remaining) [2024-01-29 22:55:29,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 39 remaining) [2024-01-29 22:55:29,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr10ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 39 remaining) [2024-01-29 22:55:29,064 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr11ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 39 remaining) [2024-01-29 22:55:29,064 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr12ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 39 remaining) [2024-01-29 22:55:29,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr13ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 39 remaining) [2024-01-29 22:55:29,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr14ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 39 remaining) [2024-01-29 22:55:29,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr15ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 39 remaining) [2024-01-29 22:55:29,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 39 remaining) [2024-01-29 22:55:29,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 39 remaining) [2024-01-29 22:55:29,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 39 remaining) [2024-01-29 22:55:29,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 39 remaining) [2024-01-29 22:55:29,066 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 39 remaining) [2024-01-29 22:55:29,066 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 39 remaining) [2024-01-29 22:55:29,066 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 39 remaining) [2024-01-29 22:55:29,066 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 39 remaining) [2024-01-29 22:55:29,066 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 39 remaining) [2024-01-29 22:55:29,066 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 39 remaining) [2024-01-29 22:55:29,066 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr10ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 39 remaining) [2024-01-29 22:55:29,067 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr11ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 39 remaining) [2024-01-29 22:55:29,067 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr12ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 39 remaining) [2024-01-29 22:55:29,067 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr13ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 39 remaining) [2024-01-29 22:55:29,067 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr14ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 39 remaining) [2024-01-29 22:55:29,067 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr15ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 39 remaining) [2024-01-29 22:55:29,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-29 22:55:29,068 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:55:29,072 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-29 22:55:29,072 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-29 22:55:29,075 INFO L503 ceAbstractionStarter]: Automizer considered 21 witness invariants [2024-01-29 22:55:29,075 INFO L504 ceAbstractionStarter]: WitnessConsidered=21 [2024-01-29 22:55:29,076 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.01 10:55:29 BasicIcfg [2024-01-29 22:55:29,076 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-29 22:55:29,077 INFO L158 Benchmark]: Toolchain (without parser) took 3837.67ms. Allocated memory was 167.8MB in the beginning and 239.1MB in the end (delta: 71.3MB). Free memory was 92.2MB in the beginning and 203.7MB in the end (delta: -111.5MB). Peak memory consumption was 97.9MB. Max. memory is 16.1GB. [2024-01-29 22:55:29,077 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 167.8MB. Free memory is still 122.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-29 22:55:29,077 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 167.8MB. Free memory was 95.3MB in the beginning and 95.2MB in the end (delta: 144.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-29 22:55:29,077 INFO L158 Benchmark]: CACSL2BoogieTranslator took 615.19ms. Allocated memory is still 167.8MB. Free memory was 91.9MB in the beginning and 129.5MB in the end (delta: -37.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-01-29 22:55:29,078 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.65ms. Allocated memory is still 167.8MB. Free memory was 129.5MB in the beginning and 127.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-29 22:55:29,078 INFO L158 Benchmark]: Boogie Preprocessor took 91.20ms. Allocated memory is still 167.8MB. Free memory was 127.4MB in the beginning and 125.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-29 22:55:29,078 INFO L158 Benchmark]: RCFGBuilder took 699.09ms. Allocated memory is still 167.8MB. Free memory was 125.3MB in the beginning and 96.6MB in the end (delta: 28.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-01-29 22:55:29,078 INFO L158 Benchmark]: TraceAbstraction took 2332.65ms. Allocated memory was 167.8MB in the beginning and 239.1MB in the end (delta: 71.3MB). Free memory was 96.0MB in the beginning and 203.7MB in the end (delta: -107.7MB). Peak memory consumption was 100.7MB. Max. memory is 16.1GB. [2024-01-29 22:55:29,079 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 167.8MB. Free memory is still 122.6MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 167.8MB. Free memory was 95.3MB in the beginning and 95.2MB in the end (delta: 144.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 615.19ms. Allocated memory is still 167.8MB. Free memory was 91.9MB in the beginning and 129.5MB in the end (delta: -37.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.65ms. Allocated memory is still 167.8MB. Free memory was 129.5MB in the beginning and 127.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 91.20ms. Allocated memory is still 167.8MB. Free memory was 127.4MB in the beginning and 125.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 699.09ms. Allocated memory is still 167.8MB. Free memory was 125.3MB in the beginning and 96.6MB in the end (delta: 28.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2332.65ms. Allocated memory was 167.8MB in the beginning and 239.1MB in the end (delta: 71.3MB). Free memory was 96.0MB in the beginning and 203.7MB in the end (delta: -107.7MB). Peak memory consumption was 100.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 697]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds 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: 700]: 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: 701]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds 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: 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: 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: 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: 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: 690]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds 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: 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: 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 119 locations, 39 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 804 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 480 mSDsluCounter, 186 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 83 mSDsCounter, 172 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 848 IncrementalHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 172 mSolverCounterUnsat, 103 mSDtfsCounter, 848 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=201occurred in iteration=4, InterpolantAutomatonStates: 34, 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, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 667 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-29 22:55:29,107 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