./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_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_34-traces-minepp-L-needs-to-be-um_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3d25acf6 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_34-traces-minepp-L-needs-to-be-um_true.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-3d25acf-m [2024-01-30 14:21:39,334 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:21:39,375 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:21:39,384 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:21:39,385 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:21:39,416 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:21:39,416 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:21:39,417 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:21:39,417 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:21:39,420 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:21:39,421 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:21:39,421 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:21:39,422 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:21:39,423 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:21:39,423 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:21:39,423 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:21:39,423 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:21:39,423 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:21:39,424 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:21:39,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:21:39,424 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:21:39,424 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:21:39,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:21:39,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:21:39,425 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:21:39,425 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:21:39,425 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:21:39,426 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:21:39,426 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:21:39,426 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:21:39,427 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:21:39,427 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:21:39,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:21:39,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:21:39,428 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:21:39,428 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:21:39,428 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:21:39,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:21:39,428 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:21:39,429 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:21:39,429 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:21:39,429 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:21:39,429 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:21:39,429 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:21:39,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:21:39,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:21:39,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:21:39,686 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:21:39,686 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:21:39,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2024-01-30 14:21:40,899 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:21:41,313 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:21:41,316 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2024-01-30 14:21:41,333 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77cfca75b/4314fb46f99246d09c5a83caca395df8/FLAG6b8cc19a8 [2024-01-30 14:21:41,360 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77cfca75b/4314fb46f99246d09c5a83caca395df8 [2024-01-30 14:21:41,363 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:21:41,363 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:21:41,365 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_34-traces-minepp-L-needs-to-be-um_true.yml/witness.yml [2024-01-30 14:21:41,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:21:41,490 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:21:41,491 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:21:41,491 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:21:41,495 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:21:41,495 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:21:41" (1/2) ... [2024-01-30 14:21:41,496 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c76aeb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:21:41, skipping insertion in model container [2024-01-30 14:21:41,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:21:41" (1/2) ... [2024-01-30 14:21:41,498 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@65a4784b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:21:41, skipping insertion in model container [2024-01-30 14:21:41,498 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:21:41" (2/2) ... [2024-01-30 14:21:41,498 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c76aeb9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:41, skipping insertion in model container [2024-01-30 14:21:41,499 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:21:41" (2/2) ... [2024-01-30 14:21:41,499 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:21:41,581 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:21:41,582 INFO L98 nessWitnessExtractor]: Location invariant before [L689-L689] (((((((0 <= g) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (g % 27 == 15)) && ((unsigned long )arg == 0UL)) && (g != 0)) && (g == 15 || g == 42) [2024-01-30 14:21:41,582 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] (((((((0 <= g) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (r == 0)) && (g % 27 == 15)) && (g != 0)) && (g == 15 || g == 42) [2024-01-30 14:21:41,583 INFO L98 nessWitnessExtractor]: Location invariant before [L714-L714] ((((((0 <= g) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (g % 27 == 15)) && (g != 0)) && (g == 15 || g == 42) [2024-01-30 14:21:41,583 INFO L98 nessWitnessExtractor]: Location invariant before [L19-L19] ((((((((((((((((((((0 <= g) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (g % 27 == 15)) && (g != 0)) && (g == 15 || g == 42)) && (0 <= g)) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (g % 27 == 15)) && (g != 0)) && (g == 15 || g == 42)) && (0 <= g)) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (g % 27 == 15)) && (g != 0)) && (g == 15 || g == 42) [2024-01-30 14:21:41,583 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (g == 15) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:41,583 INFO L98 nessWitnessExtractor]: Location invariant before [L687-L687] (unsigned long )arg == 0UL [2024-01-30 14:21:41,584 INFO L98 nessWitnessExtractor]: Location invariant before [L696-L696] (g == 42) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:41,584 INFO L98 nessWitnessExtractor]: Location invariant before [L709-L709] r == 0 [2024-01-30 14:21:41,584 INFO L98 nessWitnessExtractor]: Location invariant before [L713-L713] ((((((0 <= g) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (g % 27 == 15)) && (g != 0)) && (g == 15 || g == 42) [2024-01-30 14:21:41,584 INFO L98 nessWitnessExtractor]: Location invariant before [L697-L697] (unsigned long )arg == 0UL [2024-01-30 14:21:41,584 INFO L98 nessWitnessExtractor]: Location invariant before [L701-L701] g == 42 [2024-01-30 14:21:41,584 INFO L98 nessWitnessExtractor]: Location invariant before [L711-L711] (((((((0 <= g) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (r == 0)) && (g % 27 == 15)) && (g != 0)) && (g == 15 || g == 42) [2024-01-30 14:21:41,584 INFO L98 nessWitnessExtractor]: Location invariant before [L695-L695] (g == 42) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:41,585 INFO L98 nessWitnessExtractor]: Location invariant before [L705-L705] (((((((0 <= g) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (g % 27 == 15)) && (g != 0)) && (r != 0)) && (g == 15 || g == 42) [2024-01-30 14:21:41,585 INFO L98 nessWitnessExtractor]: Location invariant before [L704-L704] r != 0 [2024-01-30 14:21:41,585 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] (((((((0 <= g) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (g % 27 == 15)) && ((unsigned long )arg == 0UL)) && (g != 0)) && (g == 15 || g == 42) [2024-01-30 14:21:41,585 INFO L98 nessWitnessExtractor]: Location invariant before [L694-L694] (g == 42) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:41,585 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] (g == 15) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:41,585 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] (g == 15) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:41,585 INFO L98 nessWitnessExtractor]: Location invariant before [L688-L688] (((((((0 <= g) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (g % 27 == 15)) && ((unsigned long )arg == 0UL)) && (g != 0)) && (g == 15 || g == 42) [2024-01-30 14:21:41,586 INFO L98 nessWitnessExtractor]: Location invariant before [L706-L706] (((((((0 <= g) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (g % 27 == 15)) && (g != 0)) && (r != 0)) && (g == 15 || g == 42) [2024-01-30 14:21:41,620 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:21:41,763 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_34-traces-minepp-L-needs-to-be-um_true.i[1107,1120] [2024-01-30 14:21:41,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:21:41,894 INFO L202 MainTranslator]: Completed pre-run [2024-01-30 14:21:41,903 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_34-traces-minepp-L-needs-to-be-um_true.i[1107,1120] [2024-01-30 14:21:41,904 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 [2024-01-30 14:21:41,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:21:42,034 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:21:42,035 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:42 WrapperNode [2024-01-30 14:21:42,035 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:21:42,036 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:21:42,036 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:21:42,036 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:21:42,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:42" (1/1) ... [2024-01-30 14:21:42,066 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:42" (1/1) ... [2024-01-30 14:21:42,084 INFO L138 Inliner]: procedures = 164, calls = 44, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2024-01-30 14:21:42,086 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:21:42,086 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:21:42,086 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:21:42,086 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:21:42,095 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:42" (1/1) ... [2024-01-30 14:21:42,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:42" (1/1) ... [2024-01-30 14:21:42,099 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:42" (1/1) ... [2024-01-30 14:21:42,122 INFO L175 MemorySlicer]: Split 18 memory accesses to 5 slices as follows [2, 5, 1, 5, 5]. 28 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 0, 5, 5]. The 1 writes are split as follows [0, 0, 1, 0, 0]. [2024-01-30 14:21:42,123 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:42" (1/1) ... [2024-01-30 14:21:42,123 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:42" (1/1) ... [2024-01-30 14:21:42,128 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:42" (1/1) ... [2024-01-30 14:21:42,130 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:42" (1/1) ... [2024-01-30 14:21:42,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:42" (1/1) ... [2024-01-30 14:21:42,132 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:42" (1/1) ... [2024-01-30 14:21:42,134 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:21:42,136 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:21:42,137 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:21:42,137 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:21:42,162 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:42" (1/1) ... [2024-01-30 14:21:42,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:21:42,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:21:42,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-30 14:21:42,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-30 14:21:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:21:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:21:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:21:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-30 14:21:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-30 14:21:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-30 14:21:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:21:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:21:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-01-30 14:21:42,252 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-01-30 14:21:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:21:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:21:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:21:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:21:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-30 14:21:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-30 14:21:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-30 14:21:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:21:42,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:21:42,255 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-30 14:21:42,404 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:21:42,406 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:21:42,634 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:21:42,634 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:21:42,723 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:21:42,723 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-30 14:21:42,725 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:21:42 BoogieIcfgContainer [2024-01-30 14:21:42,725 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:21:42,726 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:21:42,726 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:21:42,729 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:21:42,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:21:41" (1/4) ... [2024-01-30 14:21:42,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166c6443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:21:42, skipping insertion in model container [2024-01-30 14:21:42,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:21:41" (2/4) ... [2024-01-30 14:21:42,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166c6443 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:21:42, skipping insertion in model container [2024-01-30 14:21:42,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:42" (3/4) ... [2024-01-30 14:21:42,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166c6443 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:21:42, skipping insertion in model container [2024-01-30 14:21:42,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:21:42" (4/4) ... [2024-01-30 14:21:42,731 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2024-01-30 14:21:42,745 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:21:42,746 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2024-01-30 14:21:42,746 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:21:42,787 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-30 14:21:42,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 80 transitions, 164 flow [2024-01-30 14:21:42,833 INFO L124 PetriNetUnfolderBase]: 2/79 cut-off events. [2024-01-30 14:21:42,834 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:21:42,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 79 events. 2/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 148 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2024-01-30 14:21:42,837 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 80 transitions, 164 flow [2024-01-30 14:21:42,840 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 79 transitions, 161 flow [2024-01-30 14:21:42,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:21:42,850 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;@1fe26827, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:21:42,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-01-30 14:21:42,853 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:21:42,853 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:21:42,853 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:21:42,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:42,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:21:42,854 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-30 14:21:42,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:42,857 INFO L85 PathProgramCache]: Analyzing trace with hash 10117, now seen corresponding path program 1 times [2024-01-30 14:21:42,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:42,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133329228] [2024-01-30 14:21:42,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:42,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:43,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:43,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:43,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133329228] [2024-01-30 14:21:43,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133329228] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:43,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:43,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:21:43,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114447828] [2024-01-30 14:21:43,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:43,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:21:43,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:43,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:21:43,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:21:43,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 80 [2024-01-30 14:21:43,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:43,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:43,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 80 [2024-01-30 14:21:43,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:43,351 INFO L124 PetriNetUnfolderBase]: 173/645 cut-off events. [2024-01-30 14:21:43,351 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:21:43,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 645 events. 173/645 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4005 event pairs, 118 based on Foata normal form. 17/599 useless extension candidates. Maximal degree in co-relation 1022. Up to 260 conditions per place. [2024-01-30 14:21:43,357 INFO L140 encePairwiseOnDemand]: 73/80 looper letters, 38 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2024-01-30 14:21:43,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 87 transitions, 259 flow [2024-01-30 14:21:43,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:21:43,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:21:43,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-01-30 14:21:43,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7791666666666667 [2024-01-30 14:21:43,369 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 161 flow. Second operand 3 states and 187 transitions. [2024-01-30 14:21:43,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 87 transitions, 259 flow [2024-01-30 14:21:43,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-30 14:21:43,374 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 169 flow [2024-01-30 14:21:43,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2024-01-30 14:21:43,379 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2024-01-30 14:21:43,379 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 169 flow [2024-01-30 14:21:43,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:43,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:43,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-30 14:21:43,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:21:43,380 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-30 14:21:43,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:43,381 INFO L85 PathProgramCache]: Analyzing trace with hash 301792462, now seen corresponding path program 1 times [2024-01-30 14:21:43,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:43,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511312189] [2024-01-30 14:21:43,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:43,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:43,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:43,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:43,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511312189] [2024-01-30 14:21:43,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511312189] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:43,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:43,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:21:43,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430586159] [2024-01-30 14:21:43,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:43,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:21:43,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:43,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:21:43,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:21:43,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 80 [2024-01-30 14:21:43,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:43,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:43,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 80 [2024-01-30 14:21:43,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:43,619 INFO L124 PetriNetUnfolderBase]: 121/593 cut-off events. [2024-01-30 14:21:43,620 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-01-30 14:21:43,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 593 events. 121/593 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3757 event pairs, 0 based on Foata normal form. 11/511 useless extension candidates. Maximal degree in co-relation 899. Up to 262 conditions per place. [2024-01-30 14:21:43,623 INFO L140 encePairwiseOnDemand]: 76/80 looper letters, 33 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-01-30 14:21:43,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 85 transitions, 255 flow [2024-01-30 14:21:43,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:21:43,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:21:43,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 245 transitions. [2024-01-30 14:21:43,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.765625 [2024-01-30 14:21:43,625 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 169 flow. Second operand 4 states and 245 transitions. [2024-01-30 14:21:43,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 85 transitions, 255 flow [2024-01-30 14:21:43,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 85 transitions, 249 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:21:43,627 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 163 flow [2024-01-30 14:21:43,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-01-30 14:21:43,628 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 0 predicate places. [2024-01-30 14:21:43,628 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 163 flow [2024-01-30 14:21:43,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:43,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:43,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-30 14:21:43,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:21:43,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-30 14:21:43,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:43,630 INFO L85 PathProgramCache]: Analyzing trace with hash 765579996, now seen corresponding path program 1 times [2024-01-30 14:21:43,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:43,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473358888] [2024-01-30 14:21:43,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:43,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:43,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:43,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473358888] [2024-01-30 14:21:43,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473358888] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:43,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:43,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:21:43,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840131376] [2024-01-30 14:21:43,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:43,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:21:43,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:43,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:21:43,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:21:43,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 80 [2024-01-30 14:21:43,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:43,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:43,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 80 [2024-01-30 14:21:43,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:43,790 INFO L124 PetriNetUnfolderBase]: 243/888 cut-off events. [2024-01-30 14:21:43,790 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-01-30 14:21:43,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 888 events. 243/888 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 5985 event pairs, 198 based on Foata normal form. 0/767 useless extension candidates. Maximal degree in co-relation 1446. Up to 290 conditions per place. [2024-01-30 14:21:43,794 INFO L140 encePairwiseOnDemand]: 76/80 looper letters, 44 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2024-01-30 14:21:43,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 88 transitions, 285 flow [2024-01-30 14:21:43,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:21:43,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:21:43,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2024-01-30 14:21:43,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7625 [2024-01-30 14:21:43,796 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 163 flow. Second operand 3 states and 183 transitions. [2024-01-30 14:21:43,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 88 transitions, 285 flow [2024-01-30 14:21:43,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 88 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:21:43,798 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 171 flow [2024-01-30 14:21:43,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-01-30 14:21:43,799 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 0 predicate places. [2024-01-30 14:21:43,799 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 171 flow [2024-01-30 14:21:43,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:43,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:43,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-30 14:21:43,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:21:43,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-30 14:21:43,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:43,801 INFO L85 PathProgramCache]: Analyzing trace with hash 765580015, now seen corresponding path program 1 times [2024-01-30 14:21:43,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:43,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080391223] [2024-01-30 14:21:43,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:43,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:43,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:43,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:43,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080391223] [2024-01-30 14:21:43,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080391223] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:43,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:43,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:21:43,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357687755] [2024-01-30 14:21:43,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:43,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:21:43,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:43,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:21:43,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:21:43,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 80 [2024-01-30 14:21:43,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:43,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:43,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 80 [2024-01-30 14:21:43,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:43,935 INFO L124 PetriNetUnfolderBase]: 232/820 cut-off events. [2024-01-30 14:21:43,935 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-01-30 14:21:43,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1415 conditions, 820 events. 232/820 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5523 event pairs, 209 based on Foata normal form. 12/748 useless extension candidates. Maximal degree in co-relation 1402. Up to 290 conditions per place. [2024-01-30 14:21:43,938 INFO L140 encePairwiseOnDemand]: 77/80 looper letters, 44 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2024-01-30 14:21:43,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 87 transitions, 286 flow [2024-01-30 14:21:43,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:21:43,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:21:43,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 182 transitions. [2024-01-30 14:21:43,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7583333333333333 [2024-01-30 14:21:43,940 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 171 flow. Second operand 3 states and 182 transitions. [2024-01-30 14:21:43,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 87 transitions, 286 flow [2024-01-30 14:21:43,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-30 14:21:43,942 INFO L231 Difference]: Finished difference. Result has 81 places, 74 transitions, 168 flow [2024-01-30 14:21:43,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=81, PETRI_TRANSITIONS=74} [2024-01-30 14:21:43,943 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 0 predicate places. [2024-01-30 14:21:43,943 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 168 flow [2024-01-30 14:21:43,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:43,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:43,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:43,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-30 14:21:43,944 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-30 14:21:43,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:43,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1333046400, now seen corresponding path program 1 times [2024-01-30 14:21:43,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:43,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187106755] [2024-01-30 14:21:43,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:43,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:44,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:44,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:44,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187106755] [2024-01-30 14:21:44,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187106755] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:44,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:44,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:21:44,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787582281] [2024-01-30 14:21:44,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:44,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:21:44,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:44,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:21:44,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:21:44,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 80 [2024-01-30 14:21:44,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 74 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:44,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:44,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 80 [2024-01-30 14:21:44,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:44,219 INFO L124 PetriNetUnfolderBase]: 277/783 cut-off events. [2024-01-30 14:21:44,219 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2024-01-30 14:21:44,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1505 conditions, 783 events. 277/783 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4839 event pairs, 28 based on Foata normal form. 0/767 useless extension candidates. Maximal degree in co-relation 1492. Up to 396 conditions per place. [2024-01-30 14:21:44,222 INFO L140 encePairwiseOnDemand]: 70/80 looper letters, 54 selfloop transitions, 4 changer transitions 0/90 dead transitions. [2024-01-30 14:21:44,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 90 transitions, 328 flow [2024-01-30 14:21:44,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:21:44,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:21:44,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 201 transitions. [2024-01-30 14:21:44,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.628125 [2024-01-30 14:21:44,224 INFO L175 Difference]: Start difference. First operand has 81 places, 74 transitions, 168 flow. Second operand 4 states and 201 transitions. [2024-01-30 14:21:44,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 90 transitions, 328 flow [2024-01-30 14:21:44,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 90 transitions, 314 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-30 14:21:44,226 INFO L231 Difference]: Finished difference. Result has 76 places, 68 transitions, 158 flow [2024-01-30 14:21:44,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=76, PETRI_TRANSITIONS=68} [2024-01-30 14:21:44,227 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -5 predicate places. [2024-01-30 14:21:44,227 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 68 transitions, 158 flow [2024-01-30 14:21:44,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:44,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:44,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:44,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-30 14:21:44,228 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-30 14:21:44,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:44,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1117675898, now seen corresponding path program 1 times [2024-01-30 14:21:44,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:44,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035014662] [2024-01-30 14:21:44,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:44,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:44,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:44,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035014662] [2024-01-30 14:21:44,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035014662] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:44,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:44,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:21:44,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300114382] [2024-01-30 14:21:44,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:44,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:21:44,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:44,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:21:44,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:21:44,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 80 [2024-01-30 14:21:44,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 68 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:44,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:44,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 80 [2024-01-30 14:21:44,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:44,511 INFO L124 PetriNetUnfolderBase]: 470/1342 cut-off events. [2024-01-30 14:21:44,511 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2024-01-30 14:21:44,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2509 conditions, 1342 events. 470/1342 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9194 event pairs, 145 based on Foata normal form. 0/1241 useless extension candidates. Maximal degree in co-relation 2496. Up to 479 conditions per place. [2024-01-30 14:21:44,515 INFO L140 encePairwiseOnDemand]: 68/80 looper letters, 75 selfloop transitions, 11 changer transitions 1/111 dead transitions. [2024-01-30 14:21:44,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 111 transitions, 426 flow [2024-01-30 14:21:44,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:21:44,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:21:44,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2024-01-30 14:21:44,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.684375 [2024-01-30 14:21:44,517 INFO L175 Difference]: Start difference. First operand has 76 places, 68 transitions, 158 flow. Second operand 4 states and 219 transitions. [2024-01-30 14:21:44,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 111 transitions, 426 flow [2024-01-30 14:21:44,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 111 transitions, 416 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:21:44,519 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 227 flow [2024-01-30 14:21:44,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=227, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2024-01-30 14:21:44,519 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -3 predicate places. [2024-01-30 14:21:44,520 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 227 flow [2024-01-30 14:21:44,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:44,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:44,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:44,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-30 14:21:44,520 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-30 14:21:44,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:44,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1118230449, now seen corresponding path program 1 times [2024-01-30 14:21:44,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:44,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550267280] [2024-01-30 14:21:44,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:44,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:44,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:44,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:44,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550267280] [2024-01-30 14:21:44,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550267280] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:44,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:44,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:21:44,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119673096] [2024-01-30 14:21:44,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:44,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:21:44,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:44,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:21:44,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:21:44,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 80 [2024-01-30 14:21:44,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 227 flow. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:44,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:44,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 80 [2024-01-30 14:21:44,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:44,793 INFO L124 PetriNetUnfolderBase]: 523/1510 cut-off events. [2024-01-30 14:21:44,793 INFO L125 PetriNetUnfolderBase]: For 590/590 co-relation queries the response was YES. [2024-01-30 14:21:44,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3061 conditions, 1510 events. 523/1510 cut-off events. For 590/590 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 10520 event pairs, 236 based on Foata normal form. 24/1506 useless extension candidates. Maximal degree in co-relation 3046. Up to 628 conditions per place. [2024-01-30 14:21:44,800 INFO L140 encePairwiseOnDemand]: 68/80 looper letters, 78 selfloop transitions, 12 changer transitions 2/116 dead transitions. [2024-01-30 14:21:44,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 116 transitions, 511 flow [2024-01-30 14:21:44,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:21:44,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:21:44,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2024-01-30 14:21:44,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.684375 [2024-01-30 14:21:44,802 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 227 flow. Second operand 4 states and 219 transitions. [2024-01-30 14:21:44,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 116 transitions, 511 flow [2024-01-30 14:21:44,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 116 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-30 14:21:44,805 INFO L231 Difference]: Finished difference. Result has 82 places, 84 transitions, 309 flow [2024-01-30 14:21:44,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=309, PETRI_PLACES=82, PETRI_TRANSITIONS=84} [2024-01-30 14:21:44,806 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2024-01-30 14:21:44,806 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 84 transitions, 309 flow [2024-01-30 14:21:44,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:44,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:44,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:44,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-30 14:21:44,807 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-30 14:21:44,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:44,807 INFO L85 PathProgramCache]: Analyzing trace with hash -159088843, now seen corresponding path program 1 times [2024-01-30 14:21:44,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:44,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067143996] [2024-01-30 14:21:44,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:44,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:44,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:44,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:44,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067143996] [2024-01-30 14:21:44,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067143996] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:44,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:44,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:21:44,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972333441] [2024-01-30 14:21:44,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:44,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:21:44,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:44,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:21:44,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:21:44,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 80 [2024-01-30 14:21:44,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 84 transitions, 309 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:44,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:44,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 80 [2024-01-30 14:21:44,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:45,028 INFO L124 PetriNetUnfolderBase]: 355/1073 cut-off events. [2024-01-30 14:21:45,029 INFO L125 PetriNetUnfolderBase]: For 556/560 co-relation queries the response was YES. [2024-01-30 14:21:45,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2176 conditions, 1073 events. 355/1073 cut-off events. For 556/560 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7092 event pairs, 225 based on Foata normal form. 35/1064 useless extension candidates. Maximal degree in co-relation 2158. Up to 626 conditions per place. [2024-01-30 14:21:45,033 INFO L140 encePairwiseOnDemand]: 72/80 looper letters, 44 selfloop transitions, 5 changer transitions 11/101 dead transitions. [2024-01-30 14:21:45,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 101 transitions, 475 flow [2024-01-30 14:21:45,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:21:45,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:21:45,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2024-01-30 14:21:45,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.63125 [2024-01-30 14:21:45,034 INFO L175 Difference]: Start difference. First operand has 82 places, 84 transitions, 309 flow. Second operand 4 states and 202 transitions. [2024-01-30 14:21:45,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 101 transitions, 475 flow [2024-01-30 14:21:45,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 101 transitions, 465 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:21:45,037 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 269 flow [2024-01-30 14:21:45,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=269, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2024-01-30 14:21:45,038 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -3 predicate places. [2024-01-30 14:21:45,038 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 269 flow [2024-01-30 14:21:45,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:45,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:45,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:45,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-30 14:21:45,039 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-30 14:21:45,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:45,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1280603758, now seen corresponding path program 1 times [2024-01-30 14:21:45,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:45,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262259849] [2024-01-30 14:21:45,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:45,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:45,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:45,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:45,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262259849] [2024-01-30 14:21:45,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262259849] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:45,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:45,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:21:45,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829637771] [2024-01-30 14:21:45,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:45,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:21:45,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:45,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:21:45,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:21:45,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 80 [2024-01-30 14:21:45,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 269 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:45,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:45,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 80 [2024-01-30 14:21:45,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:45,249 INFO L124 PetriNetUnfolderBase]: 302/955 cut-off events. [2024-01-30 14:21:45,250 INFO L125 PetriNetUnfolderBase]: For 269/273 co-relation queries the response was YES. [2024-01-30 14:21:45,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1926 conditions, 955 events. 302/955 cut-off events. For 269/273 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6361 event pairs, 135 based on Foata normal form. 0/909 useless extension candidates. Maximal degree in co-relation 1909. Up to 409 conditions per place. [2024-01-30 14:21:45,253 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 33 selfloop transitions, 5 changer transitions 28/103 dead transitions. [2024-01-30 14:21:45,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 103 transitions, 465 flow [2024-01-30 14:21:45,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:21:45,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:21:45,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 284 transitions. [2024-01-30 14:21:45,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.71 [2024-01-30 14:21:45,254 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 269 flow. Second operand 5 states and 284 transitions. [2024-01-30 14:21:45,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 103 transitions, 465 flow [2024-01-30 14:21:45,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 103 transitions, 445 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-30 14:21:45,257 INFO L231 Difference]: Finished difference. Result has 80 places, 67 transitions, 238 flow [2024-01-30 14:21:45,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=80, PETRI_TRANSITIONS=67} [2024-01-30 14:21:45,257 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -1 predicate places. [2024-01-30 14:21:45,258 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 67 transitions, 238 flow [2024-01-30 14:21:45,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:45,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:45,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:45,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-30 14:21:45,258 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-30 14:21:45,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:45,259 INFO L85 PathProgramCache]: Analyzing trace with hash 445099894, now seen corresponding path program 1 times [2024-01-30 14:21:45,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:45,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068045765] [2024-01-30 14:21:45,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:45,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:45,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:45,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:45,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068045765] [2024-01-30 14:21:45,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068045765] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:45,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:45,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:21:45,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063674783] [2024-01-30 14:21:45,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:45,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:21:45,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:45,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:21:45,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:21:45,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 80 [2024-01-30 14:21:45,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 67 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:45,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:45,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 80 [2024-01-30 14:21:45,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:45,476 INFO L124 PetriNetUnfolderBase]: 66/469 cut-off events. [2024-01-30 14:21:45,476 INFO L125 PetriNetUnfolderBase]: For 223/225 co-relation queries the response was YES. [2024-01-30 14:21:45,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 469 events. 66/469 cut-off events. For 223/225 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2867 event pairs, 22 based on Foata normal form. 14/473 useless extension candidates. Maximal degree in co-relation 851. Up to 162 conditions per place. [2024-01-30 14:21:45,478 INFO L140 encePairwiseOnDemand]: 75/80 looper letters, 24 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2024-01-30 14:21:45,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 69 transitions, 290 flow [2024-01-30 14:21:45,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:21:45,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:21:45,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2024-01-30 14:21:45,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.778125 [2024-01-30 14:21:45,479 INFO L175 Difference]: Start difference. First operand has 80 places, 67 transitions, 238 flow. Second operand 4 states and 249 transitions. [2024-01-30 14:21:45,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 69 transitions, 290 flow [2024-01-30 14:21:45,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 69 transitions, 274 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-01-30 14:21:45,481 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 216 flow [2024-01-30 14:21:45,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2024-01-30 14:21:45,482 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -6 predicate places. [2024-01-30 14:21:45,482 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 216 flow [2024-01-30 14:21:45,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:45,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:45,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:45,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-30 14:21:45,483 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-30 14:21:45,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:45,483 INFO L85 PathProgramCache]: Analyzing trace with hash -180050475, now seen corresponding path program 1 times [2024-01-30 14:21:45,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:45,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874582849] [2024-01-30 14:21:45,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:45,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:45,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:45,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874582849] [2024-01-30 14:21:45,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874582849] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:45,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:45,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:21:45,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433892065] [2024-01-30 14:21:45,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:45,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:21:45,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:45,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:21:45,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:21:45,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 80 [2024-01-30 14:21:45,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 216 flow. Second operand has 5 states, 5 states have (on average 56.8) internal successors, (284), 5 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:45,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:45,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 80 [2024-01-30 14:21:45,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:45,640 INFO L124 PetriNetUnfolderBase]: 64/484 cut-off events. [2024-01-30 14:21:45,640 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-01-30 14:21:45,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 484 events. 64/484 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3055 event pairs, 20 based on Foata normal form. 5/478 useless extension candidates. Maximal degree in co-relation 913. Up to 166 conditions per place. [2024-01-30 14:21:45,642 INFO L140 encePairwiseOnDemand]: 73/80 looper letters, 27 selfloop transitions, 7 changer transitions 1/75 dead transitions. [2024-01-30 14:21:45,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 75 transitions, 319 flow [2024-01-30 14:21:45,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:21:45,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:21:45,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2024-01-30 14:21:45,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.796875 [2024-01-30 14:21:45,643 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 216 flow. Second operand 4 states and 255 transitions. [2024-01-30 14:21:45,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 75 transitions, 319 flow [2024-01-30 14:21:45,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 75 transitions, 312 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:21:45,645 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 239 flow [2024-01-30 14:21:45,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2024-01-30 14:21:45,646 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -4 predicate places. [2024-01-30 14:21:45,646 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 239 flow [2024-01-30 14:21:45,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.8) internal successors, (284), 5 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:45,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:45,647 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] [2024-01-30 14:21:45,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-30 14:21:45,647 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-30 14:21:45,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:45,647 INFO L85 PathProgramCache]: Analyzing trace with hash -181903238, now seen corresponding path program 1 times [2024-01-30 14:21:45,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:45,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360431784] [2024-01-30 14:21:45,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:45,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:45,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:45,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:45,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360431784] [2024-01-30 14:21:45,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360431784] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:45,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:45,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:21:45,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738376075] [2024-01-30 14:21:45,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:45,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:21:45,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:45,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:21:45,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:21:45,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 80 [2024-01-30 14:21:45,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 239 flow. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:45,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:45,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 80 [2024-01-30 14:21:45,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:45,813 INFO L124 PetriNetUnfolderBase]: 33/345 cut-off events. [2024-01-30 14:21:45,813 INFO L125 PetriNetUnfolderBase]: For 188/188 co-relation queries the response was YES. [2024-01-30 14:21:45,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 719 conditions, 345 events. 33/345 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1878 event pairs, 15 based on Foata normal form. 6/342 useless extension candidates. Maximal degree in co-relation 698. Up to 81 conditions per place. [2024-01-30 14:21:45,814 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 22 selfloop transitions, 6 changer transitions 2/67 dead transitions. [2024-01-30 14:21:45,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 67 transitions, 290 flow [2024-01-30 14:21:45,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:21:45,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:21:45,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2024-01-30 14:21:45,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.778125 [2024-01-30 14:21:45,815 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 239 flow. Second operand 4 states and 249 transitions. [2024-01-30 14:21:45,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 67 transitions, 290 flow [2024-01-30 14:21:45,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 67 transitions, 278 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-30 14:21:45,817 INFO L231 Difference]: Finished difference. Result has 78 places, 62 transitions, 224 flow [2024-01-30 14:21:45,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=78, PETRI_TRANSITIONS=62} [2024-01-30 14:21:45,818 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -3 predicate places. [2024-01-30 14:21:45,818 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 62 transitions, 224 flow [2024-01-30 14:21:45,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:45,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:45,819 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, 1, 1, 1, 1] [2024-01-30 14:21:45,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-30 14:21:45,819 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-30 14:21:45,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:45,819 INFO L85 PathProgramCache]: Analyzing trace with hash -849191126, now seen corresponding path program 1 times [2024-01-30 14:21:45,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:45,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286361703] [2024-01-30 14:21:45,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:45,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:45,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:45,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286361703] [2024-01-30 14:21:45,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286361703] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:45,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:45,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:21:45,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276510198] [2024-01-30 14:21:45,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:45,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:21:45,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:45,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:21:45,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:21:45,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 80 [2024-01-30 14:21:45,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 62 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:45,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:45,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 80 [2024-01-30 14:21:45,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:45,992 INFO L124 PetriNetUnfolderBase]: 29/266 cut-off events. [2024-01-30 14:21:45,992 INFO L125 PetriNetUnfolderBase]: For 205/207 co-relation queries the response was YES. [2024-01-30 14:21:45,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 266 events. 29/266 cut-off events. For 205/207 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1209 event pairs, 12 based on Foata normal form. 2/257 useless extension candidates. Maximal degree in co-relation 573. Up to 65 conditions per place. [2024-01-30 14:21:45,993 INFO L140 encePairwiseOnDemand]: 73/80 looper letters, 16 selfloop transitions, 5 changer transitions 17/65 dead transitions. [2024-01-30 14:21:45,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 65 transitions, 301 flow [2024-01-30 14:21:45,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:21:45,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:21:45,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 247 transitions. [2024-01-30 14:21:45,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.771875 [2024-01-30 14:21:45,994 INFO L175 Difference]: Start difference. First operand has 78 places, 62 transitions, 224 flow. Second operand 4 states and 247 transitions. [2024-01-30 14:21:45,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 65 transitions, 301 flow [2024-01-30 14:21:45,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 65 transitions, 290 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:21:45,996 INFO L231 Difference]: Finished difference. Result has 75 places, 47 transitions, 183 flow [2024-01-30 14:21:45,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=75, PETRI_TRANSITIONS=47} [2024-01-30 14:21:45,997 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -6 predicate places. [2024-01-30 14:21:45,997 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 47 transitions, 183 flow [2024-01-30 14:21:45,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:45,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:45,997 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:45,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-30 14:21:45,998 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-30 14:21:45,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:45,998 INFO L85 PathProgramCache]: Analyzing trace with hash 506918243, now seen corresponding path program 1 times [2024-01-30 14:21:45,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:45,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731102281] [2024-01-30 14:21:45,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:45,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:46,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:46,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:46,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731102281] [2024-01-30 14:21:46,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731102281] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:46,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:46,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:21:46,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849740367] [2024-01-30 14:21:46,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:46,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:21:46,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:46,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:21:46,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:21:46,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 80 [2024-01-30 14:21:46,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 47 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 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) [2024-01-30 14:21:46,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:46,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 80 [2024-01-30 14:21:46,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:46,197 INFO L124 PetriNetUnfolderBase]: 90/347 cut-off events. [2024-01-30 14:21:46,197 INFO L125 PetriNetUnfolderBase]: For 273/274 co-relation queries the response was YES. [2024-01-30 14:21:46,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 905 conditions, 347 events. 90/347 cut-off events. For 273/274 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1592 event pairs, 55 based on Foata normal form. 6/342 useless extension candidates. Maximal degree in co-relation 883. Up to 140 conditions per place. [2024-01-30 14:21:46,198 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 25 selfloop transitions, 0 changer transitions 32/71 dead transitions. [2024-01-30 14:21:46,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 71 transitions, 379 flow [2024-01-30 14:21:46,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:21:46,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:21:46,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-01-30 14:21:46,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-01-30 14:21:46,200 INFO L175 Difference]: Start difference. First operand has 75 places, 47 transitions, 183 flow. Second operand 4 states and 192 transitions. [2024-01-30 14:21:46,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 71 transitions, 379 flow [2024-01-30 14:21:46,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 71 transitions, 356 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-30 14:21:46,201 INFO L231 Difference]: Finished difference. Result has 63 places, 39 transitions, 136 flow [2024-01-30 14:21:46,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=63, PETRI_TRANSITIONS=39} [2024-01-30 14:21:46,202 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -18 predicate places. [2024-01-30 14:21:46,202 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 39 transitions, 136 flow [2024-01-30 14:21:46,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 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) [2024-01-30 14:21:46,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:46,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:46,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-30 14:21:46,203 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-30 14:21:46,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:46,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1703318972, now seen corresponding path program 1 times [2024-01-30 14:21:46,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:46,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166945937] [2024-01-30 14:21:46,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:46,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:46,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:46,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:46,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166945937] [2024-01-30 14:21:46,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166945937] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:46,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:46,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:21:46,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579441288] [2024-01-30 14:21:46,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:46,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:21:46,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:46,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:21:46,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:21:46,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 80 [2024-01-30 14:21:46,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 39 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:46,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:46,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 80 [2024-01-30 14:21:46,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:46,436 INFO L124 PetriNetUnfolderBase]: 54/211 cut-off events. [2024-01-30 14:21:46,436 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-01-30 14:21:46,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540 conditions, 211 events. 54/211 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 689 event pairs, 26 based on Foata normal form. 2/209 useless extension candidates. Maximal degree in co-relation 532. Up to 62 conditions per place. [2024-01-30 14:21:46,437 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2024-01-30 14:21:46,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 62 transitions, 314 flow [2024-01-30 14:21:46,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:21:46,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:21:46,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2024-01-30 14:21:46,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.590625 [2024-01-30 14:21:46,438 INFO L175 Difference]: Start difference. First operand has 63 places, 39 transitions, 136 flow. Second operand 4 states and 189 transitions. [2024-01-30 14:21:46,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 62 transitions, 314 flow [2024-01-30 14:21:46,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 253 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-01-30 14:21:46,440 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-01-30 14:21:46,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-01-30 14:21:46,441 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -32 predicate places. [2024-01-30 14:21:46,441 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-01-30 14:21:46,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:46,443 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 33 remaining) [2024-01-30 14:21:46,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 33 remaining) [2024-01-30 14:21:46,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 33 remaining) [2024-01-30 14:21:46,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 33 remaining) [2024-01-30 14:21:46,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 33 remaining) [2024-01-30 14:21:46,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 33 remaining) [2024-01-30 14:21:46,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 33 remaining) [2024-01-30 14:21:46,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 33 remaining) [2024-01-30 14:21:46,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (24 of 33 remaining) [2024-01-30 14:21:46,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 33 remaining) [2024-01-30 14:21:46,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 33 remaining) [2024-01-30 14:21:46,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 33 remaining) [2024-01-30 14:21:46,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 33 remaining) [2024-01-30 14:21:46,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 33 remaining) [2024-01-30 14:21:46,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 33 remaining) [2024-01-30 14:21:46,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 33 remaining) [2024-01-30 14:21:46,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 33 remaining) [2024-01-30 14:21:46,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 33 remaining) [2024-01-30 14:21:46,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 33 remaining) [2024-01-30 14:21:46,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 33 remaining) [2024-01-30 14:21:46,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 33 remaining) [2024-01-30 14:21:46,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr10ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 33 remaining) [2024-01-30 14:21:46,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 33 remaining) [2024-01-30 14:21:46,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 33 remaining) [2024-01-30 14:21:46,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 33 remaining) [2024-01-30 14:21:46,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 33 remaining) [2024-01-30 14:21:46,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 33 remaining) [2024-01-30 14:21:46,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 33 remaining) [2024-01-30 14:21:46,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 33 remaining) [2024-01-30 14:21:46,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 33 remaining) [2024-01-30 14:21:46,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 33 remaining) [2024-01-30 14:21:46,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 33 remaining) [2024-01-30 14:21:46,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr10ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 33 remaining) [2024-01-30 14:21:46,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-30 14:21:46,449 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:46,453 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-30 14:21:46,468 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-30 14:21:46,471 INFO L503 ceAbstractionStarter]: Automizer considered 20 witness invariants [2024-01-30 14:21:46,471 INFO L504 ceAbstractionStarter]: WitnessConsidered=20 [2024-01-30 14:21:46,472 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:21:46 BasicIcfg [2024-01-30 14:21:46,472 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-30 14:21:46,472 INFO L158 Benchmark]: Toolchain (without parser) took 4981.94ms. Allocated memory was 165.7MB in the beginning and 272.6MB in the end (delta: 107.0MB). Free memory was 126.0MB in the beginning and 143.6MB in the end (delta: -17.6MB). Peak memory consumption was 89.3MB. Max. memory is 16.1GB. [2024-01-30 14:21:46,472 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:21:46,472 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 165.7MB. Free memory is still 132.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:21:46,473 INFO L158 Benchmark]: CACSL2BoogieTranslator took 544.07ms. Allocated memory is still 165.7MB. Free memory was 126.0MB in the beginning and 101.8MB in the end (delta: 24.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-01-30 14:21:46,473 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.75ms. Allocated memory is still 165.7MB. Free memory was 101.8MB in the beginning and 98.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-30 14:21:46,473 INFO L158 Benchmark]: Boogie Preprocessor took 47.93ms. Allocated memory is still 165.7MB. Free memory was 98.8MB in the beginning and 96.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-30 14:21:46,473 INFO L158 Benchmark]: RCFGBuilder took 590.31ms. Allocated memory is still 165.7MB. Free memory was 96.7MB in the beginning and 94.3MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-30 14:21:46,474 INFO L158 Benchmark]: TraceAbstraction took 3745.68ms. Allocated memory was 165.7MB in the beginning and 272.6MB in the end (delta: 107.0MB). Free memory was 93.3MB in the beginning and 143.6MB in the end (delta: -50.3MB). Peak memory consumption was 58.6MB. Max. memory is 16.1GB. [2024-01-30 14:21:46,474 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.13ms. Allocated memory is still 165.7MB. Free memory is still 132.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 544.07ms. Allocated memory is still 165.7MB. Free memory was 126.0MB in the beginning and 101.8MB in the end (delta: 24.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.75ms. Allocated memory is still 165.7MB. Free memory was 101.8MB in the beginning and 98.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.93ms. Allocated memory is still 165.7MB. Free memory was 98.8MB in the beginning and 96.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 590.31ms. Allocated memory is still 165.7MB. Free memory was 96.7MB in the beginning and 94.3MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3745.68ms. Allocated memory was 165.7MB in the beginning and 272.6MB in the end (delta: 107.0MB). Free memory was 93.3MB in the beginning and 143.6MB in the end (delta: -50.3MB). Peak memory consumption was 58.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 701]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 704]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 709]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 705]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 710]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 706]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 711]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 713]: 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: 714]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 687]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 688]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 689]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 690]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 691]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 692]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 693]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 694]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 695]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 696]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 697]: 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, 120 locations, 33 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: 3.6s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1227 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 776 mSDsluCounter, 241 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 86 mSDsCounter, 205 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1503 IncrementalHoareTripleChecker+Invalid, 1708 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 205 mSolverCounterUnsat, 155 mSDtfsCounter, 1503 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=309occurred in iteration=7, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 234 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 219 ConstructedInterpolants, 0 QuantifiedInterpolants, 1341 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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 21 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-30 14:21:46,498 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