./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/bench-exp2x3.wvr.c --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/bench-exp2x3.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cb09d658 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp2x3.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp2x3.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-cb09d65-m [2024-01-27 23:07:38,292 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 23:07:38,384 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 23:07:38,388 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 23:07:38,390 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 23:07:38,426 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 23:07:38,427 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 23:07:38,428 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 23:07:38,428 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 23:07:38,431 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 23:07:38,431 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 23:07:38,431 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 23:07:38,432 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 23:07:38,433 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 23:07:38,433 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 23:07:38,434 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 23:07:38,434 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 23:07:38,440 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 23:07:38,440 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 23:07:38,441 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 23:07:38,441 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 23:07:38,441 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 23:07:38,441 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 23:07:38,442 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 23:07:38,442 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 23:07:38,442 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 23:07:38,442 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 23:07:38,442 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 23:07:38,443 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 23:07:38,443 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 23:07:38,444 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 23:07:38,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 23:07:38,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 23:07:38,445 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 23:07:38,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 23:07:38,445 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 23:07:38,445 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 23:07:38,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 23:07:38,445 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 23:07:38,446 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 23:07:38,446 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 23:07:38,446 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 23:07:38,446 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 23:07:38,446 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-27 23:07:38,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 23:07:38,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 23:07:38,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 23:07:38,877 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 23:07:38,878 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 23:07:38,879 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp2x3.wvr.c [2024-01-27 23:07:39,977 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 23:07:40,136 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 23:07:40,137 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x3.wvr.c [2024-01-27 23:07:40,143 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f960c65ff/96f88e2256a247149793ddc0c52bdb4e/FLAG72e5cb9d7 [2024-01-27 23:07:40,156 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f960c65ff/96f88e2256a247149793ddc0c52bdb4e [2024-01-27 23:07:40,159 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-27 23:07:40,159 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-27 23:07:40,161 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp2x3.wvr.yml/witness.yml [2024-01-27 23:07:40,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 23:07:40,249 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-27 23:07:40,249 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 23:07:40,250 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 23:07:40,253 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 23:07:40,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:07:40" (1/2) ... [2024-01-27 23:07:40,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c7db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:07:40, skipping insertion in model container [2024-01-27 23:07:40,255 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:07:40" (1/2) ... [2024-01-27 23:07:40,257 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@f783b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:07:40, skipping insertion in model container [2024-01-27 23:07:40,257 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 11:07:40" (2/2) ... [2024-01-27 23:07:40,257 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c7db0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:07:40, skipping insertion in model container [2024-01-27 23:07:40,257 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 11:07:40" (2/2) ... [2024-01-27 23:07:40,258 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-27 23:07:40,275 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-27 23:07:40,276 INFO L98 nessWitnessExtractor]: Location invariant before [L74-L74] n == 0U [2024-01-27 23:07:40,276 INFO L98 nessWitnessExtractor]: Location invariant before [L74-L74] x3 == 0U [2024-01-27 23:07:40,277 INFO L98 nessWitnessExtractor]: Location invariant before [L74-L74] x4 == 0U [2024-01-27 23:07:40,277 INFO L98 nessWitnessExtractor]: Location invariant before [L74-L74] x2 == 0U [2024-01-27 23:07:40,277 INFO L98 nessWitnessExtractor]: Location invariant before [L77-L77] n == 0U [2024-01-27 23:07:40,278 INFO L98 nessWitnessExtractor]: Loop invariant at [L38-L40] (unsigned long )_argptr == 0UL [2024-01-27 23:07:40,278 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] (unsigned long )_argptr == 0UL [2024-01-27 23:07:40,278 INFO L98 nessWitnessExtractor]: Location invariant before [L47-L47] (unsigned long )_argptr == 0UL [2024-01-27 23:07:40,278 INFO L98 nessWitnessExtractor]: Location invariant before [L66-L66] (unsigned long )_argptr == 0UL [2024-01-27 23:07:40,278 INFO L98 nessWitnessExtractor]: Location invariant before [L55-L55] (unsigned long )_argptr == 0UL [2024-01-27 23:07:40,278 INFO L98 nessWitnessExtractor]: Loop invariant at [L62-L64] (unsigned long )_argptr == 0UL [2024-01-27 23:07:40,278 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] (unsigned long )_argptr == 0UL [2024-01-27 23:07:40,279 INFO L98 nessWitnessExtractor]: Location invariant before [L39-L39] (unsigned long )_argptr == 0UL [2024-01-27 23:07:40,279 INFO L98 nessWitnessExtractor]: Loop invariant at [L46-L48] (unsigned long )_argptr == 0UL [2024-01-27 23:07:40,279 INFO L98 nessWitnessExtractor]: Location invariant after [L37-L43] n == 0U [2024-01-27 23:07:40,279 INFO L98 nessWitnessExtractor]: Loop invariant at [L54-L56] (unsigned long )_argptr == 0UL [2024-01-27 23:07:40,279 INFO L98 nessWitnessExtractor]: Location invariant before [L73-L73] x3 == 0U [2024-01-27 23:07:40,279 INFO L98 nessWitnessExtractor]: Location invariant before [L73-L73] x2 == 0U [2024-01-27 23:07:40,280 INFO L98 nessWitnessExtractor]: Location invariant before [L73-L73] (0LL - (long long )n) + (long long )x1 >= 0LL [2024-01-27 23:07:40,280 INFO L98 nessWitnessExtractor]: Location invariant before [L73-L73] x4 == 0U [2024-01-27 23:07:40,280 INFO L98 nessWitnessExtractor]: Location invariant before [L73-L73] (long long )n + (long long )x1 >= 0LL [2024-01-27 23:07:40,281 INFO L98 nessWitnessExtractor]: Location invariant before [L73-L73] (long long )n - (long long )x1 >= 0LL [2024-01-27 23:07:40,281 INFO L98 nessWitnessExtractor]: Location invariant before [L73-L73] x1 == 0U [2024-01-27 23:07:40,281 INFO L98 nessWitnessExtractor]: Location invariant before [L73-L73] n == 0U [2024-01-27 23:07:40,281 INFO L98 nessWitnessExtractor]: Location invariant before [L73-L73] (0LL - (long long )n) - (long long )x1 >= 0LL [2024-01-27 23:07:40,281 INFO L98 nessWitnessExtractor]: Location invariant before [L76-L76] x4 == 0U [2024-01-27 23:07:40,281 INFO L98 nessWitnessExtractor]: Location invariant before [L76-L76] n == 0U [2024-01-27 23:07:40,281 INFO L98 nessWitnessExtractor]: Location invariant before [L63-L63] (unsigned long )_argptr == 0UL [2024-01-27 23:07:40,282 INFO L98 nessWitnessExtractor]: Location invariant before [L75-L75] n == 0U [2024-01-27 23:07:40,282 INFO L98 nessWitnessExtractor]: Location invariant before [L75-L75] x4 == 0U [2024-01-27 23:07:40,282 INFO L98 nessWitnessExtractor]: Location invariant before [L75-L75] x3 == 0U [2024-01-27 23:07:40,282 INFO L98 nessWitnessExtractor]: Location invariant before [L42-L42] (unsigned long )_argptr == 0UL [2024-01-27 23:07:40,299 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 23:07:40,445 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x3.wvr.c[2289,2302] [2024-01-27 23:07:40,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 23:07:40,456 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-27 23:07:40,491 WARN L424 MainDispatcher]: Unable to annotate void* thread1(void* _argptr) { while (x1 < n) { x1 = x1 + x1; } return 0; } with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-27 23:07:40,532 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x3.wvr.c[2289,2302] [2024-01-27 23:07:40,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 23:07:40,543 INFO L206 MainTranslator]: Completed translation [2024-01-27 23:07:40,547 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:07:40 WrapperNode [2024-01-27 23:07:40,548 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 23:07:40,549 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 23:07:40,549 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 23:07:40,549 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 23:07:40,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:07:40" (1/1) ... [2024-01-27 23:07:40,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:07:40" (1/1) ... [2024-01-27 23:07:40,601 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 114 [2024-01-27 23:07:40,602 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 23:07:40,603 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 23:07:40,603 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 23:07:40,603 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 23:07:40,613 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:07:40" (1/1) ... [2024-01-27 23:07:40,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:07:40" (1/1) ... [2024-01-27 23:07:40,623 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:07:40" (1/1) ... [2024-01-27 23:07:40,643 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-27 23:07:40,643 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:07:40" (1/1) ... [2024-01-27 23:07:40,644 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:07:40" (1/1) ... [2024-01-27 23:07:40,658 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:07:40" (1/1) ... [2024-01-27 23:07:40,663 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:07:40" (1/1) ... [2024-01-27 23:07:40,666 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:07:40" (1/1) ... [2024-01-27 23:07:40,667 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:07:40" (1/1) ... [2024-01-27 23:07:40,669 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 23:07:40,672 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 23:07:40,672 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 23:07:40,672 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 23:07:40,673 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:07:40" (1/1) ... [2024-01-27 23:07:40,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 23:07:40,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 23:07:40,695 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) [2024-01-27 23:07:40,711 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 [2024-01-27 23:07:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 23:07:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 23:07:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 23:07:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 23:07:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 23:07:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 23:07:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 23:07:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-27 23:07:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-27 23:07:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 23:07:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 23:07:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 23:07:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 23:07:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 23:07:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 23:07:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 23:07:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 23:07:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 23:07:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 23:07:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 23:07:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 23:07:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 23:07:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 23:07:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 23:07:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 23:07:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 23:07:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 23:07:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 23:07:40,733 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 23:07:40,844 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 23:07:40,845 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 23:07:41,123 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 23:07:41,123 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 23:07:41,241 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 23:07:41,241 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-27 23:07:41,242 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:07:41 BoogieIcfgContainer [2024-01-27 23:07:41,242 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 23:07:41,243 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 23:07:41,243 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 23:07:41,246 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 23:07:41,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:07:40" (1/4) ... [2024-01-27 23:07:41,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147c9f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:07:41, skipping insertion in model container [2024-01-27 23:07:41,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 11:07:40" (2/4) ... [2024-01-27 23:07:41,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147c9f3c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 11:07:41, skipping insertion in model container [2024-01-27 23:07:41,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:07:40" (3/4) ... [2024-01-27 23:07:41,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147c9f3c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 11:07:41, skipping insertion in model container [2024-01-27 23:07:41,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:07:41" (4/4) ... [2024-01-27 23:07:41,248 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x3.wvr.c [2024-01-27 23:07:41,261 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 23:07:41,261 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2024-01-27 23:07:41,261 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 23:07:41,351 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-27 23:07:41,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 105 transitions, 238 flow [2024-01-27 23:07:41,453 INFO L124 PetriNetUnfolderBase]: 4/101 cut-off events. [2024-01-27 23:07:41,453 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-27 23:07:41,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 101 events. 4/101 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 191 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2024-01-27 23:07:41,457 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 105 transitions, 238 flow [2024-01-27 23:07:41,461 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 100 transitions, 224 flow [2024-01-27 23:07:41,473 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 23:07:41,479 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;@b9abc2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 23:07:41,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2024-01-27 23:07:41,481 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 23:07:41,481 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-27 23:07:41,481 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 23:07:41,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:07:41,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-27 23:07:41,482 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:07:41,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:07:41,487 INFO L85 PathProgramCache]: Analyzing trace with hash 12373, now seen corresponding path program 1 times [2024-01-27 23:07:41,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:07:41,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828953301] [2024-01-27 23:07:41,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:07:41,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:07:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:07:41,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:07:41,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:07:41,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828953301] [2024-01-27 23:07:41,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828953301] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:07:41,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:07:41,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 23:07:41,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874729788] [2024-01-27 23:07:41,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:07:41,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 23:07:41,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:07:41,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 23:07:41,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 23:07:41,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 105 [2024-01-27 23:07:41,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 100 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2024-01-27 23:07:41,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:07:41,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 105 [2024-01-27 23:07:41,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:07:42,900 INFO L124 PetriNetUnfolderBase]: 7352/10624 cut-off events. [2024-01-27 23:07:42,901 INFO L125 PetriNetUnfolderBase]: For 414/414 co-relation queries the response was YES. [2024-01-27 23:07:42,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20244 conditions, 10624 events. 7352/10624 cut-off events. For 414/414 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 64567 event pairs, 4752 based on Foata normal form. 6/7173 useless extension candidates. Maximal degree in co-relation 17346. Up to 9146 conditions per place. [2024-01-27 23:07:42,973 INFO L140 encePairwiseOnDemand]: 97/105 looper letters, 40 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2024-01-27 23:07:42,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 94 transitions, 296 flow [2024-01-27 23:07:42,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 23:07:42,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 23:07:42,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2024-01-27 23:07:42,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-01-27 23:07:42,988 INFO L175 Difference]: Start difference. First operand has 109 places, 100 transitions, 224 flow. Second operand 3 states and 216 transitions. [2024-01-27 23:07:42,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 94 transitions, 296 flow [2024-01-27 23:07:43,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 94 transitions, 280 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-27 23:07:43,004 INFO L231 Difference]: Finished difference. Result has 97 places, 94 transitions, 200 flow [2024-01-27 23:07:43,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=97, PETRI_TRANSITIONS=94} [2024-01-27 23:07:43,008 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -12 predicate places. [2024-01-27 23:07:43,008 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 94 transitions, 200 flow [2024-01-27 23:07:43,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2024-01-27 23:07:43,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:07:43,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:07:43,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 23:07:43,012 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:07:43,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:07:43,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1843040616, now seen corresponding path program 1 times [2024-01-27 23:07:43,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:07:43,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890048522] [2024-01-27 23:07:43,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:07:43,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:07:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:07:43,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:07:43,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:07:43,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890048522] [2024-01-27 23:07:43,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890048522] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:07:43,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:07:43,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 23:07:43,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781407806] [2024-01-27 23:07:43,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:07:43,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 23:07:43,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:07:43,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 23:07:43,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 23:07:43,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 105 [2024-01-27 23:07:43,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 94 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:07:43,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:07:43,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 105 [2024-01-27 23:07:43,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:07:43,512 INFO L124 PetriNetUnfolderBase]: 2026/3333 cut-off events. [2024-01-27 23:07:43,512 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-01-27 23:07:43,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6244 conditions, 3333 events. 2026/3333 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 22975 event pairs, 1965 based on Foata normal form. 3/2938 useless extension candidates. Maximal degree in co-relation 6225. Up to 2818 conditions per place. [2024-01-27 23:07:43,535 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 32 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2024-01-27 23:07:43,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 90 transitions, 260 flow [2024-01-27 23:07:43,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 23:07:43,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 23:07:43,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2024-01-27 23:07:43,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7396825396825397 [2024-01-27 23:07:43,542 INFO L175 Difference]: Start difference. First operand has 97 places, 94 transitions, 200 flow. Second operand 3 states and 233 transitions. [2024-01-27 23:07:43,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 90 transitions, 260 flow [2024-01-27 23:07:43,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 256 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 23:07:43,545 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 192 flow [2024-01-27 23:07:43,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2024-01-27 23:07:43,546 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -16 predicate places. [2024-01-27 23:07:43,546 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 192 flow [2024-01-27 23:07:43,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:07:43,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:07:43,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:07:43,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 23:07:43,547 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:07:43,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:07:43,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1635492258, now seen corresponding path program 1 times [2024-01-27 23:07:43,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:07:43,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652324820] [2024-01-27 23:07:43,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:07:43,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:07:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:07:43,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:07:43,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:07:43,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652324820] [2024-01-27 23:07:43,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652324820] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:07:43,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:07:43,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 23:07:43,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372250866] [2024-01-27 23:07:43,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:07:43,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 23:07:43,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:07:43,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 23:07:43,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 23:07:43,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 105 [2024-01-27 23:07:43,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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) [2024-01-27 23:07:43,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:07:43,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 105 [2024-01-27 23:07:43,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:07:43,967 INFO L124 PetriNetUnfolderBase]: 2026/3331 cut-off events. [2024-01-27 23:07:43,967 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-01-27 23:07:43,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6242 conditions, 3331 events. 2026/3331 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 23019 event pairs, 1965 based on Foata normal form. 2/2937 useless extension candidates. Maximal degree in co-relation 6207. Up to 2820 conditions per place. [2024-01-27 23:07:43,982 INFO L140 encePairwiseOnDemand]: 101/105 looper letters, 32 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2024-01-27 23:07:43,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 88 transitions, 256 flow [2024-01-27 23:07:43,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 23:07:43,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 23:07:43,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2024-01-27 23:07:43,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7523809523809524 [2024-01-27 23:07:43,984 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 192 flow. Second operand 3 states and 237 transitions. [2024-01-27 23:07:43,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 88 transitions, 256 flow [2024-01-27 23:07:43,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 88 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 23:07:43,988 INFO L231 Difference]: Finished difference. Result has 91 places, 88 transitions, 188 flow [2024-01-27 23:07:43,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=91, PETRI_TRANSITIONS=88} [2024-01-27 23:07:43,989 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -18 predicate places. [2024-01-27 23:07:43,989 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 88 transitions, 188 flow [2024-01-27 23:07:43,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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) [2024-01-27 23:07:43,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:07:43,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:07:43,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 23:07:43,990 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:07:43,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:07:43,990 INFO L85 PathProgramCache]: Analyzing trace with hash 839348006, now seen corresponding path program 1 times [2024-01-27 23:07:43,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:07:43,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410653982] [2024-01-27 23:07:43,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:07:43,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:07:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:07:44,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:07:44,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:07:44,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410653982] [2024-01-27 23:07:44,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410653982] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:07:44,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:07:44,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 23:07:44,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024194072] [2024-01-27 23:07:44,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:07:44,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 23:07:44,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:07:44,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 23:07:44,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 23:07:44,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 105 [2024-01-27 23:07:44,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 88 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2024-01-27 23:07:44,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:07:44,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 105 [2024-01-27 23:07:44,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:07:44,293 INFO L124 PetriNetUnfolderBase]: 2026/3328 cut-off events. [2024-01-27 23:07:44,293 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-01-27 23:07:44,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6239 conditions, 3328 events. 2026/3328 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 22976 event pairs, 1965 based on Foata normal form. 2/2936 useless extension candidates. Maximal degree in co-relation 6216. Up to 2819 conditions per place. [2024-01-27 23:07:44,316 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 32 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-01-27 23:07:44,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 85 transitions, 250 flow [2024-01-27 23:07:44,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 23:07:44,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 23:07:44,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2024-01-27 23:07:44,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.746031746031746 [2024-01-27 23:07:44,318 INFO L175 Difference]: Start difference. First operand has 91 places, 88 transitions, 188 flow. Second operand 3 states and 235 transitions. [2024-01-27 23:07:44,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 85 transitions, 250 flow [2024-01-27 23:07:44,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 85 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 23:07:44,319 INFO L231 Difference]: Finished difference. Result has 88 places, 85 transitions, 182 flow [2024-01-27 23:07:44,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=88, PETRI_TRANSITIONS=85} [2024-01-27 23:07:44,320 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -21 predicate places. [2024-01-27 23:07:44,320 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 85 transitions, 182 flow [2024-01-27 23:07:44,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2024-01-27 23:07:44,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:07:44,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:07:44,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 23:07:44,321 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:07:44,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:07:44,322 INFO L85 PathProgramCache]: Analyzing trace with hash -175003918, now seen corresponding path program 1 times [2024-01-27 23:07:44,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:07:44,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731414290] [2024-01-27 23:07:44,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:07:44,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:07:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:07:44,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:07:44,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:07:44,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731414290] [2024-01-27 23:07:44,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731414290] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:07:44,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:07:44,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 23:07:44,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705224134] [2024-01-27 23:07:44,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:07:44,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 23:07:44,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:07:44,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 23:07:44,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 23:07:44,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 105 [2024-01-27 23:07:44,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 85 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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) [2024-01-27 23:07:44,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:07:44,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 105 [2024-01-27 23:07:44,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:07:44,969 INFO L124 PetriNetUnfolderBase]: 7352/10611 cut-off events. [2024-01-27 23:07:44,970 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-01-27 23:07:44,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19917 conditions, 10611 events. 7352/10611 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 64532 event pairs, 4752 based on Foata normal form. 1/7165 useless extension candidates. Maximal degree in co-relation 19889. Up to 9138 conditions per place. [2024-01-27 23:07:45,092 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 39 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2024-01-27 23:07:45,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 81 transitions, 256 flow [2024-01-27 23:07:45,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 23:07:45,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 23:07:45,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2024-01-27 23:07:45,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2024-01-27 23:07:45,094 INFO L175 Difference]: Start difference. First operand has 88 places, 85 transitions, 182 flow. Second operand 3 states and 213 transitions. [2024-01-27 23:07:45,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 81 transitions, 256 flow [2024-01-27 23:07:45,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 81 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 23:07:45,095 INFO L231 Difference]: Finished difference. Result has 84 places, 81 transitions, 174 flow [2024-01-27 23:07:45,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=84, PETRI_TRANSITIONS=81} [2024-01-27 23:07:45,096 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -25 predicate places. [2024-01-27 23:07:45,096 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 81 transitions, 174 flow [2024-01-27 23:07:45,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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) [2024-01-27 23:07:45,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:07:45,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:07:45,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 23:07:45,097 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:07:45,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:07:45,098 INFO L85 PathProgramCache]: Analyzing trace with hash -797271507, now seen corresponding path program 1 times [2024-01-27 23:07:45,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:07:45,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244345075] [2024-01-27 23:07:45,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:07:45,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:07:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:07:45,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:07:45,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:07:45,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244345075] [2024-01-27 23:07:45,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244345075] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:07:45,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:07:45,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 23:07:45,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894335722] [2024-01-27 23:07:45,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:07:45,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 23:07:45,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:07:45,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 23:07:45,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 23:07:45,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 105 [2024-01-27 23:07:45,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 81 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 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) [2024-01-27 23:07:45,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:07:45,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 105 [2024-01-27 23:07:45,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:07:46,012 INFO L124 PetriNetUnfolderBase]: 3577/5646 cut-off events. [2024-01-27 23:07:46,013 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-01-27 23:07:46,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10336 conditions, 5646 events. 3577/5646 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 35755 event pairs, 1827 based on Foata normal form. 340/5690 useless extension candidates. Maximal degree in co-relation 10305. Up to 4124 conditions per place. [2024-01-27 23:07:46,037 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 49 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2024-01-27 23:07:46,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 93 transitions, 303 flow [2024-01-27 23:07:46,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 23:07:46,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 23:07:46,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2024-01-27 23:07:46,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7404761904761905 [2024-01-27 23:07:46,039 INFO L175 Difference]: Start difference. First operand has 84 places, 81 transitions, 174 flow. Second operand 4 states and 311 transitions. [2024-01-27 23:07:46,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 93 transitions, 303 flow [2024-01-27 23:07:46,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 93 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 23:07:46,041 INFO L231 Difference]: Finished difference. Result has 81 places, 77 transitions, 166 flow [2024-01-27 23:07:46,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=81, PETRI_TRANSITIONS=77} [2024-01-27 23:07:46,042 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -28 predicate places. [2024-01-27 23:07:46,042 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 77 transitions, 166 flow [2024-01-27 23:07:46,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 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) [2024-01-27 23:07:46,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:07:46,042 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] [2024-01-27 23:07:46,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 23:07:46,043 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:07:46,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:07:46,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1674928342, now seen corresponding path program 1 times [2024-01-27 23:07:46,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:07:46,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053523492] [2024-01-27 23:07:46,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:07:46,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:07:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:07:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:07:46,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:07:46,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053523492] [2024-01-27 23:07:46,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053523492] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:07:46,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:07:46,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 23:07:46,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738057762] [2024-01-27 23:07:46,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:07:46,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 23:07:46,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:07:46,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 23:07:46,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 23:07:46,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 105 [2024-01-27 23:07:46,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 77 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 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) [2024-01-27 23:07:46,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:07:46,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 105 [2024-01-27 23:07:46,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:07:46,411 INFO L124 PetriNetUnfolderBase]: 3128/4716 cut-off events. [2024-01-27 23:07:46,411 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-01-27 23:07:46,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8793 conditions, 4716 events. 3128/4716 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 29893 event pairs, 248 based on Foata normal form. 400/4951 useless extension candidates. Maximal degree in co-relation 8758. Up to 3336 conditions per place. [2024-01-27 23:07:46,468 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 52 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2024-01-27 23:07:46,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 92 transitions, 307 flow [2024-01-27 23:07:46,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 23:07:46,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 23:07:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 314 transitions. [2024-01-27 23:07:46,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7476190476190476 [2024-01-27 23:07:46,470 INFO L175 Difference]: Start difference. First operand has 81 places, 77 transitions, 166 flow. Second operand 4 states and 314 transitions. [2024-01-27 23:07:46,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 92 transitions, 307 flow [2024-01-27 23:07:46,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 92 transitions, 304 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 23:07:46,472 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 159 flow [2024-01-27 23:07:46,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2024-01-27 23:07:46,472 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -31 predicate places. [2024-01-27 23:07:46,473 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 159 flow [2024-01-27 23:07:46,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 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) [2024-01-27 23:07:46,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:07:46,473 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] [2024-01-27 23:07:46,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 23:07:46,473 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:07:46,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:07:46,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1004530611, now seen corresponding path program 1 times [2024-01-27 23:07:46,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:07:46,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919307921] [2024-01-27 23:07:46,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:07:46,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:07:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:07:46,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:07:46,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:07:46,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919307921] [2024-01-27 23:07:46,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919307921] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:07:46,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:07:46,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 23:07:46,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198975057] [2024-01-27 23:07:46,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:07:46,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 23:07:46,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:07:46,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 23:07:46,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 23:07:46,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 105 [2024-01-27 23:07:46,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 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) [2024-01-27 23:07:46,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:07:46,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 105 [2024-01-27 23:07:46,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:07:46,831 INFO L124 PetriNetUnfolderBase]: 3191/4796 cut-off events. [2024-01-27 23:07:46,831 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-01-27 23:07:46,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8935 conditions, 4796 events. 3191/4796 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 29934 event pairs, 161 based on Foata normal form. 400/5046 useless extension candidates. Maximal degree in co-relation 8901. Up to 3304 conditions per place. [2024-01-27 23:07:46,856 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 55 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2024-01-27 23:07:46,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 91 transitions, 312 flow [2024-01-27 23:07:46,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 23:07:46,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 23:07:46,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 317 transitions. [2024-01-27 23:07:46,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7547619047619047 [2024-01-27 23:07:46,857 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 159 flow. Second operand 4 states and 317 transitions. [2024-01-27 23:07:46,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 91 transitions, 312 flow [2024-01-27 23:07:46,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 91 transitions, 309 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 23:07:46,859 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 152 flow [2024-01-27 23:07:46,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2024-01-27 23:07:46,860 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -34 predicate places. [2024-01-27 23:07:46,860 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 152 flow [2024-01-27 23:07:46,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 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) [2024-01-27 23:07:46,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:07:46,861 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] [2024-01-27 23:07:46,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 23:07:46,861 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:07:46,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:07:46,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1016395351, now seen corresponding path program 1 times [2024-01-27 23:07:46,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:07:46,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160812632] [2024-01-27 23:07:46,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:07:46,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:07:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:07:46,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:07:46,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:07:46,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160812632] [2024-01-27 23:07:46,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160812632] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:07:46,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:07:46,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 23:07:46,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712692103] [2024-01-27 23:07:46,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:07:46,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 23:07:46,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:07:46,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 23:07:46,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 23:07:46,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 105 [2024-01-27 23:07:46,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 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) [2024-01-27 23:07:46,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:07:46,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 105 [2024-01-27 23:07:46,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:07:47,249 INFO L124 PetriNetUnfolderBase]: 3016/4482 cut-off events. [2024-01-27 23:07:47,249 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-01-27 23:07:47,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8458 conditions, 4482 events. 3016/4482 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 27079 event pairs, 357 based on Foata normal form. 340/4710 useless extension candidates. Maximal degree in co-relation 8424. Up to 2810 conditions per place. [2024-01-27 23:07:47,274 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 58 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2024-01-27 23:07:47,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 90 transitions, 317 flow [2024-01-27 23:07:47,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 23:07:47,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 23:07:47,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 320 transitions. [2024-01-27 23:07:47,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2024-01-27 23:07:47,276 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 152 flow. Second operand 4 states and 320 transitions. [2024-01-27 23:07:47,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 90 transitions, 317 flow [2024-01-27 23:07:47,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 90 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 23:07:47,278 INFO L231 Difference]: Finished difference. Result has 72 places, 65 transitions, 145 flow [2024-01-27 23:07:47,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=72, PETRI_TRANSITIONS=65} [2024-01-27 23:07:47,279 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -37 predicate places. [2024-01-27 23:07:47,279 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 65 transitions, 145 flow [2024-01-27 23:07:47,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 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) [2024-01-27 23:07:47,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:07:47,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:07:47,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 23:07:47,280 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:07:47,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:07:47,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1238512162, now seen corresponding path program 1 times [2024-01-27 23:07:47,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:07:47,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283885246] [2024-01-27 23:07:47,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:07:47,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:07:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:07:47,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:07:47,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:07:47,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283885246] [2024-01-27 23:07:47,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283885246] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:07:47,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:07:47,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 23:07:47,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858975219] [2024-01-27 23:07:47,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:07:47,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 23:07:47,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:07:47,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 23:07:47,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 23:07:47,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 105 [2024-01-27 23:07:47,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2024-01-27 23:07:47,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:07:47,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 105 [2024-01-27 23:07:47,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:07:47,824 INFO L124 PetriNetUnfolderBase]: 4381/6698 cut-off events. [2024-01-27 23:07:47,824 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2024-01-27 23:07:47,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12485 conditions, 6698 events. 4381/6698 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 40071 event pairs, 656 based on Foata normal form. 1/6585 useless extension candidates. Maximal degree in co-relation 12451. Up to 4604 conditions per place. [2024-01-27 23:07:47,851 INFO L140 encePairwiseOnDemand]: 97/105 looper letters, 52 selfloop transitions, 7 changer transitions 1/91 dead transitions. [2024-01-27 23:07:47,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 91 transitions, 326 flow [2024-01-27 23:07:47,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 23:07:47,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 23:07:47,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2024-01-27 23:07:47,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8507936507936508 [2024-01-27 23:07:47,853 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 145 flow. Second operand 3 states and 268 transitions. [2024-01-27 23:07:47,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 91 transitions, 326 flow [2024-01-27 23:07:47,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 91 transitions, 321 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 23:07:47,855 INFO L231 Difference]: Finished difference. Result has 73 places, 69 transitions, 181 flow [2024-01-27 23:07:47,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=73, PETRI_TRANSITIONS=69} [2024-01-27 23:07:47,856 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -36 predicate places. [2024-01-27 23:07:47,856 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 69 transitions, 181 flow [2024-01-27 23:07:47,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2024-01-27 23:07:47,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:07:47,857 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:07:47,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 23:07:47,857 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:07:47,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:07:47,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1716240187, now seen corresponding path program 1 times [2024-01-27 23:07:47,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:07:47,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950195146] [2024-01-27 23:07:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:07:47,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:07:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:07:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:07:47,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:07:47,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950195146] [2024-01-27 23:07:47,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950195146] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:07:47,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:07:47,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 23:07:47,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093120797] [2024-01-27 23:07:47,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:07:47,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 23:07:47,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:07:47,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 23:07:47,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 23:07:48,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 105 [2024-01-27 23:07:48,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 69 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 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) [2024-01-27 23:07:48,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:07:48,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 105 [2024-01-27 23:07:48,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:07:48,791 INFO L124 PetriNetUnfolderBase]: 8773/12009 cut-off events. [2024-01-27 23:07:48,792 INFO L125 PetriNetUnfolderBase]: For 2451/2961 co-relation queries the response was YES. [2024-01-27 23:07:48,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26939 conditions, 12009 events. 8773/12009 cut-off events. For 2451/2961 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 69101 event pairs, 967 based on Foata normal form. 30/10602 useless extension candidates. Maximal degree in co-relation 26894. Up to 4056 conditions per place. [2024-01-27 23:07:48,850 INFO L140 encePairwiseOnDemand]: 94/105 looper letters, 97 selfloop transitions, 17 changer transitions 0/137 dead transitions. [2024-01-27 23:07:48,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 137 transitions, 594 flow [2024-01-27 23:07:48,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 23:07:48,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 23:07:48,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 402 transitions. [2024-01-27 23:07:48,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7657142857142857 [2024-01-27 23:07:48,852 INFO L175 Difference]: Start difference. First operand has 73 places, 69 transitions, 181 flow. Second operand 5 states and 402 transitions. [2024-01-27 23:07:48,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 137 transitions, 594 flow [2024-01-27 23:07:48,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 137 transitions, 583 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 23:07:48,854 INFO L231 Difference]: Finished difference. Result has 79 places, 79 transitions, 278 flow [2024-01-27 23:07:48,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=278, PETRI_PLACES=79, PETRI_TRANSITIONS=79} [2024-01-27 23:07:48,855 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -30 predicate places. [2024-01-27 23:07:48,855 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 79 transitions, 278 flow [2024-01-27 23:07:48,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 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) [2024-01-27 23:07:48,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:07:48,856 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:07:48,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-27 23:07:48,856 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:07:48,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:07:48,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1804811123, now seen corresponding path program 2 times [2024-01-27 23:07:48,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:07:48,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146987078] [2024-01-27 23:07:48,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:07:48,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:07:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:07:48,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:07:48,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:07:48,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146987078] [2024-01-27 23:07:48,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146987078] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:07:48,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:07:48,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 23:07:48,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863056104] [2024-01-27 23:07:48,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:07:48,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 23:07:48,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:07:48,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 23:07:48,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 23:07:49,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 105 [2024-01-27 23:07:49,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 79 transitions, 278 flow. Second operand has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 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) [2024-01-27 23:07:49,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:07:49,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 105 [2024-01-27 23:07:49,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:07:49,858 INFO L124 PetriNetUnfolderBase]: 8577/12004 cut-off events. [2024-01-27 23:07:49,859 INFO L125 PetriNetUnfolderBase]: For 7681/7729 co-relation queries the response was YES. [2024-01-27 23:07:49,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30834 conditions, 12004 events. 8577/12004 cut-off events. For 7681/7729 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 71208 event pairs, 1701 based on Foata normal form. 262/11952 useless extension candidates. Maximal degree in co-relation 30779. Up to 4122 conditions per place. [2024-01-27 23:07:49,942 INFO L140 encePairwiseOnDemand]: 94/105 looper letters, 103 selfloop transitions, 19 changer transitions 0/145 dead transitions. [2024-01-27 23:07:49,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 145 transitions, 717 flow [2024-01-27 23:07:49,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 23:07:49,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 23:07:49,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 405 transitions. [2024-01-27 23:07:49,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2024-01-27 23:07:49,945 INFO L175 Difference]: Start difference. First operand has 79 places, 79 transitions, 278 flow. Second operand 5 states and 405 transitions. [2024-01-27 23:07:49,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 145 transitions, 717 flow [2024-01-27 23:07:49,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 145 transitions, 717 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 23:07:49,951 INFO L231 Difference]: Finished difference. Result has 87 places, 84 transitions, 395 flow [2024-01-27 23:07:49,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=395, PETRI_PLACES=87, PETRI_TRANSITIONS=84} [2024-01-27 23:07:49,951 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -22 predicate places. [2024-01-27 23:07:49,952 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 84 transitions, 395 flow [2024-01-27 23:07:49,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 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) [2024-01-27 23:07:49,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:07:49,952 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:07:49,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-27 23:07:49,953 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:07:49,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:07:49,953 INFO L85 PathProgramCache]: Analyzing trace with hash -317025146, now seen corresponding path program 1 times [2024-01-27 23:07:49,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:07:49,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147033371] [2024-01-27 23:07:49,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:07:49,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:07:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:07:50,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:07:50,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:07:50,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147033371] [2024-01-27 23:07:50,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147033371] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:07:50,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:07:50,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 23:07:50,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593742732] [2024-01-27 23:07:50,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:07:50,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 23:07:50,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:07:50,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 23:07:50,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 23:07:50,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 105 [2024-01-27 23:07:50,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 84 transitions, 395 flow. Second operand has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 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) [2024-01-27 23:07:50,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:07:50,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 105 [2024-01-27 23:07:50,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:07:51,008 INFO L124 PetriNetUnfolderBase]: 8981/12459 cut-off events. [2024-01-27 23:07:51,009 INFO L125 PetriNetUnfolderBase]: For 22237/22757 co-relation queries the response was YES. [2024-01-27 23:07:51,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37125 conditions, 12459 events. 8981/12459 cut-off events. For 22237/22757 co-relation queries the response was YES. Maximal size of possible extension queue 789. Compared 74121 event pairs, 967 based on Foata normal form. 201/12436 useless extension candidates. Maximal degree in co-relation 37056. Up to 4759 conditions per place. [2024-01-27 23:07:51,187 INFO L140 encePairwiseOnDemand]: 96/105 looper letters, 107 selfloop transitions, 14 changer transitions 0/144 dead transitions. [2024-01-27 23:07:51,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 144 transitions, 831 flow [2024-01-27 23:07:51,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 23:07:51,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 23:07:51,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 401 transitions. [2024-01-27 23:07:51,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7638095238095238 [2024-01-27 23:07:51,189 INFO L175 Difference]: Start difference. First operand has 87 places, 84 transitions, 395 flow. Second operand 5 states and 401 transitions. [2024-01-27 23:07:51,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 144 transitions, 831 flow [2024-01-27 23:07:51,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 144 transitions, 827 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-01-27 23:07:51,222 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 482 flow [2024-01-27 23:07:51,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=482, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2024-01-27 23:07:51,223 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -15 predicate places. [2024-01-27 23:07:51,223 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 482 flow [2024-01-27 23:07:51,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 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) [2024-01-27 23:07:51,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:07:51,224 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:07:51,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-27 23:07:51,224 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:07:51,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:07:51,225 INFO L85 PathProgramCache]: Analyzing trace with hash 831866104, now seen corresponding path program 2 times [2024-01-27 23:07:51,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:07:51,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402583094] [2024-01-27 23:07:51,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:07:51,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:07:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:07:51,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:07:51,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:07:51,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402583094] [2024-01-27 23:07:51,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402583094] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:07:51,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:07:51,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 23:07:51,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920256279] [2024-01-27 23:07:51,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:07:51,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 23:07:51,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:07:51,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 23:07:51,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 23:07:51,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 105 [2024-01-27 23:07:51,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 482 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 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) [2024-01-27 23:07:51,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:07:51,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 105 [2024-01-27 23:07:51,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:07:52,159 INFO L124 PetriNetUnfolderBase]: 8573/11984 cut-off events. [2024-01-27 23:07:52,160 INFO L125 PetriNetUnfolderBase]: For 26280/26375 co-relation queries the response was YES. [2024-01-27 23:07:52,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37134 conditions, 11984 events. 8573/11984 cut-off events. For 26280/26375 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 70636 event pairs, 2405 based on Foata normal form. 230/11873 useless extension candidates. Maximal degree in co-relation 37057. Up to 5168 conditions per place. [2024-01-27 23:07:52,243 INFO L140 encePairwiseOnDemand]: 96/105 looper letters, 109 selfloop transitions, 16 changer transitions 0/149 dead transitions. [2024-01-27 23:07:52,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 149 transitions, 927 flow [2024-01-27 23:07:52,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 23:07:52,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 23:07:52,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 406 transitions. [2024-01-27 23:07:52,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7733333333333333 [2024-01-27 23:07:52,245 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 482 flow. Second operand 5 states and 406 transitions. [2024-01-27 23:07:52,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 149 transitions, 927 flow [2024-01-27 23:07:52,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 149 transitions, 912 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-01-27 23:07:52,284 INFO L231 Difference]: Finished difference. Result has 100 places, 91 transitions, 556 flow [2024-01-27 23:07:52,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=556, PETRI_PLACES=100, PETRI_TRANSITIONS=91} [2024-01-27 23:07:52,285 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -9 predicate places. [2024-01-27 23:07:52,285 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 91 transitions, 556 flow [2024-01-27 23:07:52,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 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) [2024-01-27 23:07:52,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:07:52,285 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:07:52,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-27 23:07:52,285 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:07:52,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:07:52,286 INFO L85 PathProgramCache]: Analyzing trace with hash -2138841899, now seen corresponding path program 1 times [2024-01-27 23:07:52,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:07:52,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565306008] [2024-01-27 23:07:52,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:07:52,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:07:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:07:52,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:07:52,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:07:52,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565306008] [2024-01-27 23:07:52,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565306008] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 23:07:52,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573217615] [2024-01-27 23:07:52,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:07:52,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 23:07:52,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 23:07:52,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 23:07:52,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-27 23:07:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:07:52,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 23:07:52,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 23:07:52,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:07:52,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 23:07:52,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:07:52,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573217615] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 23:07:52,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 23:07:52,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-01-27 23:07:52,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705764465] [2024-01-27 23:07:52,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 23:07:52,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 23:07:52,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:07:52,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 23:07:52,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-01-27 23:07:53,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 105 [2024-01-27 23:07:53,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 91 transitions, 556 flow. Second operand has 6 states, 6 states have (on average 64.33333333333333) internal successors, (386), 6 states have internal predecessors, (386), 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) [2024-01-27 23:07:53,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:07:53,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 105 [2024-01-27 23:07:53,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:07:54,603 INFO L124 PetriNetUnfolderBase]: 15260/21257 cut-off events. [2024-01-27 23:07:54,603 INFO L125 PetriNetUnfolderBase]: For 93083/97390 co-relation queries the response was YES. [2024-01-27 23:07:54,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72599 conditions, 21257 events. 15260/21257 cut-off events. For 93083/97390 co-relation queries the response was YES. Maximal size of possible extension queue 1199. Compared 135383 event pairs, 1803 based on Foata normal form. 1148/19625 useless extension candidates. Maximal degree in co-relation 72513. Up to 6154 conditions per place. [2024-01-27 23:07:54,752 INFO L140 encePairwiseOnDemand]: 96/105 looper letters, 242 selfloop transitions, 16 changer transitions 0/287 dead transitions. [2024-01-27 23:07:54,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 287 transitions, 2566 flow [2024-01-27 23:07:54,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 23:07:54,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 23:07:54,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 657 transitions. [2024-01-27 23:07:54,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6952380952380952 [2024-01-27 23:07:54,754 INFO L175 Difference]: Start difference. First operand has 100 places, 91 transitions, 556 flow. Second operand 9 states and 657 transitions. [2024-01-27 23:07:54,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 287 transitions, 2566 flow [2024-01-27 23:07:54,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 287 transitions, 2503 flow, removed 28 selfloop flow, removed 1 redundant places. [2024-01-27 23:07:54,804 INFO L231 Difference]: Finished difference. Result has 113 places, 101 transitions, 651 flow [2024-01-27 23:07:54,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=651, PETRI_PLACES=113, PETRI_TRANSITIONS=101} [2024-01-27 23:07:54,805 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 4 predicate places. [2024-01-27 23:07:54,805 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 101 transitions, 651 flow [2024-01-27 23:07:54,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.33333333333333) internal successors, (386), 6 states have internal predecessors, (386), 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) [2024-01-27 23:07:54,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:07:54,806 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:07:54,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-27 23:07:55,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-01-27 23:07:55,017 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:07:55,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:07:55,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1634818151, now seen corresponding path program 2 times [2024-01-27 23:07:55,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:07:55,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262193995] [2024-01-27 23:07:55,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:07:55,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:07:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:07:55,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:07:55,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:07:55,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262193995] [2024-01-27 23:07:55,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262193995] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:07:55,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:07:55,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 23:07:55,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052693352] [2024-01-27 23:07:55,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:07:55,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 23:07:55,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:07:55,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 23:07:55,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 23:07:55,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 105 [2024-01-27 23:07:55,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 101 transitions, 651 flow. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 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) [2024-01-27 23:07:55,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:07:55,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 105 [2024-01-27 23:07:55,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:07:56,581 INFO L124 PetriNetUnfolderBase]: 13356/18523 cut-off events. [2024-01-27 23:07:56,582 INFO L125 PetriNetUnfolderBase]: For 92112/96209 co-relation queries the response was YES. [2024-01-27 23:07:56,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74276 conditions, 18523 events. 13356/18523 cut-off events. For 92112/96209 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 113971 event pairs, 1285 based on Foata normal form. 1209/18858 useless extension candidates. Maximal degree in co-relation 74184. Up to 6257 conditions per place. [2024-01-27 23:07:56,723 INFO L140 encePairwiseOnDemand]: 96/105 looper letters, 154 selfloop transitions, 18 changer transitions 0/203 dead transitions. [2024-01-27 23:07:56,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 203 transitions, 1806 flow [2024-01-27 23:07:56,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 23:07:56,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 23:07:56,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 407 transitions. [2024-01-27 23:07:56,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7752380952380953 [2024-01-27 23:07:56,725 INFO L175 Difference]: Start difference. First operand has 113 places, 101 transitions, 651 flow. Second operand 5 states and 407 transitions. [2024-01-27 23:07:56,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 203 transitions, 1806 flow [2024-01-27 23:07:56,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 203 transitions, 1804 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 23:07:56,820 INFO L231 Difference]: Finished difference. Result has 119 places, 110 transitions, 795 flow [2024-01-27 23:07:56,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=795, PETRI_PLACES=119, PETRI_TRANSITIONS=110} [2024-01-27 23:07:56,821 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 10 predicate places. [2024-01-27 23:07:56,821 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 110 transitions, 795 flow [2024-01-27 23:07:56,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 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) [2024-01-27 23:07:56,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:07:56,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:07:56,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-27 23:07:56,822 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:07:56,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:07:56,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1071503040, now seen corresponding path program 1 times [2024-01-27 23:07:56,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:07:56,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099765475] [2024-01-27 23:07:56,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:07:56,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:07:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:07:56,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:07:56,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:07:56,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099765475] [2024-01-27 23:07:56,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099765475] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:07:56,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:07:56,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 23:07:56,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76989183] [2024-01-27 23:07:56,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:07:56,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 23:07:56,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:07:56,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 23:07:56,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 23:07:56,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 105 [2024-01-27 23:07:56,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 110 transitions, 795 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 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) [2024-01-27 23:07:56,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:07:56,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 105 [2024-01-27 23:07:56,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:07:58,539 INFO L124 PetriNetUnfolderBase]: 13188/18133 cut-off events. [2024-01-27 23:07:58,539 INFO L125 PetriNetUnfolderBase]: For 106505/110860 co-relation queries the response was YES. [2024-01-27 23:07:58,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78345 conditions, 18133 events. 13188/18133 cut-off events. For 106505/110860 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 108504 event pairs, 1177 based on Foata normal form. 1261/18520 useless extension candidates. Maximal degree in co-relation 78246. Up to 8801 conditions per place. [2024-01-27 23:07:58,702 INFO L140 encePairwiseOnDemand]: 96/105 looper letters, 159 selfloop transitions, 12 changer transitions 0/203 dead transitions. [2024-01-27 23:07:58,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 203 transitions, 1873 flow [2024-01-27 23:07:58,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 23:07:58,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 23:07:58,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 410 transitions. [2024-01-27 23:07:58,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.780952380952381 [2024-01-27 23:07:58,704 INFO L175 Difference]: Start difference. First operand has 119 places, 110 transitions, 795 flow. Second operand 5 states and 410 transitions. [2024-01-27 23:07:58,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 203 transitions, 1873 flow [2024-01-27 23:07:58,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 203 transitions, 1863 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-01-27 23:07:58,884 INFO L231 Difference]: Finished difference. Result has 126 places, 111 transitions, 830 flow [2024-01-27 23:07:58,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=830, PETRI_PLACES=126, PETRI_TRANSITIONS=111} [2024-01-27 23:07:58,884 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 17 predicate places. [2024-01-27 23:07:58,884 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 111 transitions, 830 flow [2024-01-27 23:07:58,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 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) [2024-01-27 23:07:58,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:07:58,885 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:07:58,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-27 23:07:58,885 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:07:58,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:07:58,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1226179184, now seen corresponding path program 2 times [2024-01-27 23:07:58,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:07:58,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145052501] [2024-01-27 23:07:58,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:07:58,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:07:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:07:58,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:07:58,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:07:58,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145052501] [2024-01-27 23:07:58,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145052501] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:07:58,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:07:58,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 23:07:58,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564231999] [2024-01-27 23:07:58,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:07:58,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 23:07:58,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:07:58,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 23:07:58,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 23:07:59,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 105 [2024-01-27 23:07:59,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 111 transitions, 830 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 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) [2024-01-27 23:07:59,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:07:59,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 105 [2024-01-27 23:07:59,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:08:00,834 INFO L124 PetriNetUnfolderBase]: 13304/18697 cut-off events. [2024-01-27 23:08:00,834 INFO L125 PetriNetUnfolderBase]: For 120511/124494 co-relation queries the response was YES. [2024-01-27 23:08:00,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82766 conditions, 18697 events. 13304/18697 cut-off events. For 120511/124494 co-relation queries the response was YES. Maximal size of possible extension queue 943. Compared 117176 event pairs, 2143 based on Foata normal form. 1348/19230 useless extension candidates. Maximal degree in co-relation 82658. Up to 8590 conditions per place. [2024-01-27 23:08:01,040 INFO L140 encePairwiseOnDemand]: 96/105 looper letters, 163 selfloop transitions, 16 changer transitions 0/211 dead transitions. [2024-01-27 23:08:01,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 211 transitions, 1995 flow [2024-01-27 23:08:01,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 23:08:01,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 23:08:01,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 412 transitions. [2024-01-27 23:08:01,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7847619047619048 [2024-01-27 23:08:01,042 INFO L175 Difference]: Start difference. First operand has 126 places, 111 transitions, 830 flow. Second operand 5 states and 412 transitions. [2024-01-27 23:08:01,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 211 transitions, 1995 flow [2024-01-27 23:08:01,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 211 transitions, 1978 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-01-27 23:08:01,458 INFO L231 Difference]: Finished difference. Result has 132 places, 116 transitions, 930 flow [2024-01-27 23:08:01,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=930, PETRI_PLACES=132, PETRI_TRANSITIONS=116} [2024-01-27 23:08:01,459 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 23 predicate places. [2024-01-27 23:08:01,459 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 116 transitions, 930 flow [2024-01-27 23:08:01,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 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) [2024-01-27 23:08:01,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:08:01,460 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:08:01,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-27 23:08:01,460 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:08:01,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:08:01,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1418155017, now seen corresponding path program 1 times [2024-01-27 23:08:01,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:08:01,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331408171] [2024-01-27 23:08:01,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:08:01,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:08:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:08:01,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:08:01,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:08:01,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331408171] [2024-01-27 23:08:01,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331408171] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 23:08:01,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282891423] [2024-01-27 23:08:01,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:08:01,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 23:08:01,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 23:08:01,976 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 23:08:01,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-27 23:08:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:08:02,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-27 23:08:02,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 23:08:07,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:08:07,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 23:08:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:08:09,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282891423] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 23:08:09,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 23:08:09,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-01-27 23:08:09,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848327332] [2024-01-27 23:08:09,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 23:08:09,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-01-27 23:08:09,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:08:09,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-01-27 23:08:09,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=243, Unknown=1, NotChecked=0, Total=342 [2024-01-27 23:08:10,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:08:12,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:08:17,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.52s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:08:19,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:08:21,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:08:22,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 105 [2024-01-27 23:08:22,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 116 transitions, 930 flow. Second operand has 19 states, 19 states have (on average 39.26315789473684) internal successors, (746), 19 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:08:22,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:08:22,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 105 [2024-01-27 23:08:22,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:08:25,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:08:29,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:08:33,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.89s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:08:36,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:08:39,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:08:48,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:08:50,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-27 23:08:52,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:08:56,904 INFO L124 PetriNetUnfolderBase]: 42410/58888 cut-off events. [2024-01-27 23:08:56,904 INFO L125 PetriNetUnfolderBase]: For 395292/395301 co-relation queries the response was YES. [2024-01-27 23:08:57,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280531 conditions, 58888 events. 42410/58888 cut-off events. For 395292/395301 co-relation queries the response was YES. Maximal size of possible extension queue 2792. Compared 397815 event pairs, 5015 based on Foata normal form. 74/58842 useless extension candidates. Maximal degree in co-relation 280408. Up to 27605 conditions per place. [2024-01-27 23:08:57,560 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 515 selfloop transitions, 199 changer transitions 29/757 dead transitions. [2024-01-27 23:08:57,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 757 transitions, 7523 flow [2024-01-27 23:08:57,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-01-27 23:08:57,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-01-27 23:08:57,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1246 transitions. [2024-01-27 23:08:57,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159420289855072 [2024-01-27 23:08:57,569 INFO L175 Difference]: Start difference. First operand has 132 places, 116 transitions, 930 flow. Second operand 23 states and 1246 transitions. [2024-01-27 23:08:57,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 757 transitions, 7523 flow [2024-01-27 23:08:59,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 757 transitions, 7464 flow, removed 26 selfloop flow, removed 1 redundant places. [2024-01-27 23:08:59,281 INFO L231 Difference]: Finished difference. Result has 163 places, 309 transitions, 4009 flow [2024-01-27 23:08:59,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4009, PETRI_PLACES=163, PETRI_TRANSITIONS=309} [2024-01-27 23:08:59,281 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 54 predicate places. [2024-01-27 23:08:59,281 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 309 transitions, 4009 flow [2024-01-27 23:08:59,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 39.26315789473684) internal successors, (746), 19 states have internal predecessors, (746), 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) [2024-01-27 23:08:59,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:08:59,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:08:59,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-01-27 23:08:59,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 23:08:59,494 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:08:59,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:08:59,494 INFO L85 PathProgramCache]: Analyzing trace with hash -160429065, now seen corresponding path program 2 times [2024-01-27 23:08:59,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:08:59,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518719409] [2024-01-27 23:08:59,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:08:59,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:08:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:08:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:08:59,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:08:59,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518719409] [2024-01-27 23:08:59,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518719409] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 23:08:59,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486383271] [2024-01-27 23:08:59,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 23:08:59,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 23:08:59,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 23:08:59,961 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 23:08:59,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-27 23:09:00,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 23:09:00,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 23:09:00,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-27 23:09:00,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 23:09:59,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:09:59,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 23:10:05,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:10:05,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486383271] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 23:10:05,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 23:10:05,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-01-27 23:10:05,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249130238] [2024-01-27 23:10:05,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 23:10:05,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-01-27 23:10:05,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:10:05,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-01-27 23:10:05,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=246, Unknown=4, NotChecked=0, Total=342 [2024-01-27 23:10:09,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:10:13,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:10:16,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:10:20,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:10:24,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.61s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:10:28,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:10:30,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:10:34,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:10:36,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:10:40,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:10:41,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:10:42,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:10:46,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:10:48,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:10:53,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:10:56,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:11:00,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:11:04,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:11:08,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:11:12,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:11:19,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:11:20,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:11:21,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:11:25,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:11:29,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:11:34,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:11:34,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 105 [2024-01-27 23:11:34,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 309 transitions, 4009 flow. Second operand has 19 states, 19 states have (on average 39.26315789473684) internal successors, (746), 19 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:11:34,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:11:34,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 105 [2024-01-27 23:11:34,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:11:47,758 WARN L293 SmtUtils]: Spent 9.35s on a formula simplification. DAG size of input: 71 DAG size of output: 42 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-27 23:11:52,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:11:54,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-27 23:11:58,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:12:03,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:12:07,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:12:09,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:12:13,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:12:27,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:12:38,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-27 23:12:42,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:12:46,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:12:50,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:12:53,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:12:57,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.91s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:13:01,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:13:05,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:13:09,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:13:15,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:13:22,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:13:25,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:13:30,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:13:35,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:13:40,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-27 23:13:42,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:13:44,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:13:48,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:13:49,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:13:54,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:13:58,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:14:00,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:14:13,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-27 23:14:20,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:14:25,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:14:31,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.30s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:14:36,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-27 23:14:45,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:14:45,937 INFO L124 PetriNetUnfolderBase]: 57239/79532 cut-off events. [2024-01-27 23:14:45,938 INFO L125 PetriNetUnfolderBase]: For 725061/725108 co-relation queries the response was YES. [2024-01-27 23:14:46,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430170 conditions, 79532 events. 57239/79532 cut-off events. For 725061/725108 co-relation queries the response was YES. Maximal size of possible extension queue 4131. Compared 558452 event pairs, 6535 based on Foata normal form. 85/79497 useless extension candidates. Maximal degree in co-relation 430030. Up to 40961 conditions per place. [2024-01-27 23:14:47,128 INFO L140 encePairwiseOnDemand]: 78/105 looper letters, 579 selfloop transitions, 373 changer transitions 37/1003 dead transitions. [2024-01-27 23:14:47,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 1003 transitions, 12788 flow [2024-01-27 23:14:47,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-01-27 23:14:47,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-01-27 23:14:47,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1264 transitions. [2024-01-27 23:14:47,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233954451345756 [2024-01-27 23:14:47,132 INFO L175 Difference]: Start difference. First operand has 163 places, 309 transitions, 4009 flow. Second operand 23 states and 1264 transitions. [2024-01-27 23:14:47,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 1003 transitions, 12788 flow [2024-01-27 23:14:53,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 1003 transitions, 12059 flow, removed 358 selfloop flow, removed 2 redundant places. [2024-01-27 23:14:53,752 INFO L231 Difference]: Finished difference. Result has 195 places, 568 transitions, 8990 flow [2024-01-27 23:14:53,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=3672, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=8990, PETRI_PLACES=195, PETRI_TRANSITIONS=568} [2024-01-27 23:14:53,753 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 86 predicate places. [2024-01-27 23:14:53,753 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 568 transitions, 8990 flow [2024-01-27 23:14:53,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 39.26315789473684) internal successors, (746), 19 states have internal predecessors, (746), 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) [2024-01-27 23:14:53,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:14:53,754 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:14:53,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-27 23:14:53,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 23:14:53,966 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:14:53,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:14:53,967 INFO L85 PathProgramCache]: Analyzing trace with hash 533563503, now seen corresponding path program 1 times [2024-01-27 23:14:53,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:14:53,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436017028] [2024-01-27 23:14:53,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:14:53,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:14:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:14:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:14:54,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:14:54,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436017028] [2024-01-27 23:14:54,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436017028] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 23:14:54,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029264971] [2024-01-27 23:14:54,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:14:54,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 23:14:54,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 23:14:54,383 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 23:14:54,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-27 23:14:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:14:54,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-27 23:14:54,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 23:14:56,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:14:56,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 23:14:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:14:57,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029264971] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 23:14:57,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 23:14:57,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-01-27 23:14:57,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097818928] [2024-01-27 23:14:57,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 23:14:57,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-01-27 23:14:57,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:14:57,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-01-27 23:14:57,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2024-01-27 23:14:59,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 105 [2024-01-27 23:14:59,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 568 transitions, 8990 flow. Second operand has 19 states, 19 states have (on average 48.0) internal successors, (912), 19 states have internal predecessors, (912), 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) [2024-01-27 23:14:59,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:14:59,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 105 [2024-01-27 23:14:59,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:15:02,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:15:26,702 INFO L124 PetriNetUnfolderBase]: 84863/117347 cut-off events. [2024-01-27 23:15:26,704 INFO L125 PetriNetUnfolderBase]: For 1879698/1917676 co-relation queries the response was YES. [2024-01-27 23:15:28,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802838 conditions, 117347 events. 84863/117347 cut-off events. For 1879698/1917676 co-relation queries the response was YES. Maximal size of possible extension queue 6221. Compared 848832 event pairs, 4648 based on Foata normal form. 14168/127754 useless extension candidates. Maximal degree in co-relation 802682. Up to 70537 conditions per place. [2024-01-27 23:15:29,165 INFO L140 encePairwiseOnDemand]: 91/105 looper letters, 828 selfloop transitions, 1292 changer transitions 19/2240 dead transitions. [2024-01-27 23:15:29,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 2240 transitions, 38670 flow [2024-01-27 23:15:29,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-01-27 23:15:29,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-01-27 23:15:29,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1420 transitions. [2024-01-27 23:15:29,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.587991718426501 [2024-01-27 23:15:29,169 INFO L175 Difference]: Start difference. First operand has 195 places, 568 transitions, 8990 flow. Second operand 23 states and 1420 transitions. [2024-01-27 23:15:29,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 2240 transitions, 38670 flow [2024-01-27 23:15:46,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 2240 transitions, 38077 flow, removed 290 selfloop flow, removed 2 redundant places. [2024-01-27 23:15:46,042 INFO L231 Difference]: Finished difference. Result has 225 places, 1818 transitions, 35860 flow [2024-01-27 23:15:46,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=8795, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=339, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=35860, PETRI_PLACES=225, PETRI_TRANSITIONS=1818} [2024-01-27 23:15:46,043 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 116 predicate places. [2024-01-27 23:15:46,043 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 1818 transitions, 35860 flow [2024-01-27 23:15:46,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 48.0) internal successors, (912), 19 states have internal predecessors, (912), 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) [2024-01-27 23:15:46,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:15:46,044 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:15:46,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-27 23:15:46,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 23:15:46,256 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:15:46,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:15:46,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2017197983, now seen corresponding path program 2 times [2024-01-27 23:15:46,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:15:46,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000816112] [2024-01-27 23:15:46,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:15:46,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:15:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:15:46,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:15:46,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:15:46,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000816112] [2024-01-27 23:15:46,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000816112] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 23:15:46,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115773499] [2024-01-27 23:15:46,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 23:15:46,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 23:15:46,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 23:15:46,623 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 23:15:46,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-27 23:15:46,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 23:15:46,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 23:15:46,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-27 23:15:46,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 23:17:48,818 WARN L293 SmtUtils]: Spent 15.48s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-27 23:19:39,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:19:39,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 23:20:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:20:24,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115773499] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 23:20:24,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 23:20:24,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 20 [2024-01-27 23:20:24,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026185278] [2024-01-27 23:20:24,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 23:20:24,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-01-27 23:20:24,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:20:24,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-01-27 23:20:24,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=265, Unknown=34, NotChecked=0, Total=380 [2024-01-27 23:20:28,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:20:32,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:20:36,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:20:37,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:20:41,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.60s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:20:45,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:20:49,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:20:53,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:20:57,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:21:01,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:21:05,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:21:09,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:21:13,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:21:17,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:21:21,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:21:25,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:21:29,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:21:33,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:21:38,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:21:42,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:21:42,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 105 [2024-01-27 23:21:42,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 1818 transitions, 35860 flow. Second operand has 20 states, 20 states have (on average 38.8) internal successors, (776), 20 states have internal predecessors, (776), 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) [2024-01-27 23:21:42,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:21:42,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 105 [2024-01-27 23:21:42,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:21:46,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 23:21:49,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Killed by 15