./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-easy1.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/test-easy1.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ab2e0ac4 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/test-easy1.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/test-easy1.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-ab2e0ac-m [2024-01-29 14:20:27,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-29 14:20:27,115 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-29 14:20:27,120 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-29 14:20:27,121 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-29 14:20:27,151 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-29 14:20:27,153 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-29 14:20:27,154 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-29 14:20:27,155 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-29 14:20:27,160 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-29 14:20:27,160 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-29 14:20:27,161 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-29 14:20:27,161 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-29 14:20:27,162 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-29 14:20:27,162 INFO L153 SettingsManager]: * Use SBE=true [2024-01-29 14:20:27,162 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-29 14:20:27,163 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-29 14:20:27,163 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-29 14:20:27,163 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-29 14:20:27,163 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-29 14:20:27,164 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-29 14:20:27,164 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-29 14:20:27,164 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-29 14:20:27,165 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-29 14:20:27,165 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-29 14:20:27,165 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-29 14:20:27,166 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-29 14:20:27,166 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-29 14:20:27,167 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-29 14:20:27,167 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-29 14:20:27,168 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-29 14:20:27,168 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-29 14:20:27,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 14:20:27,169 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-29 14:20:27,169 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-29 14:20:27,169 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-29 14:20:27,170 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-29 14:20:27,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-29 14:20:27,170 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-29 14:20:27,170 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-29 14:20:27,170 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-29 14:20:27,171 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-29 14:20:27,171 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-29 14:20:27,172 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-29 14:20:27,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-29 14:20:27,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-29 14:20:27,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-29 14:20:27,459 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-29 14:20:27,459 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-29 14:20:27,460 INFO L431 ainManager$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/test-easy1.wvr.yml/witness.yml [2024-01-29 14:20:27,545 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-29 14:20:27,546 INFO L274 PluginConnector]: CDTParser initialized [2024-01-29 14:20:27,547 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c [2024-01-29 14:20:28,766 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-29 14:20:28,964 INFO L384 CDTParser]: Found 1 translation units. [2024-01-29 14:20:28,965 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c [2024-01-29 14:20:28,973 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/615baad7a/d5b5f171d10344e6901264768764d61e/FLAG802552786 [2024-01-29 14:20:28,988 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/615baad7a/d5b5f171d10344e6901264768764d61e [2024-01-29 14:20:28,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-29 14:20:28,990 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-29 14:20:28,992 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-29 14:20:28,992 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-29 14:20:28,996 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-29 14:20:28,997 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:20:27" (1/2) ... [2024-01-29 14:20:28,997 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc71f41 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:20:28, skipping insertion in model container [2024-01-29 14:20:28,997 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:20:27" (1/2) ... [2024-01-29 14:20:28,999 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@33cd84e3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:20:28, skipping insertion in model container [2024-01-29 14:20:28,999 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 02:20:28" (2/2) ... [2024-01-29 14:20:28,999 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc71f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:28, skipping insertion in model container [2024-01-29 14:20:28,999 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 02:20:28" (2/2) ... [2024-01-29 14:20:29,000 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-29 14:20:29,022 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-29 14:20:29,024 INFO L98 nessWitnessExtractor]: Location invariant before [L53-L53] (unsigned long )_argptr == 0UL [2024-01-29 14:20:29,024 INFO L98 nessWitnessExtractor]: Location invariant before [L59-L59] (0LL - (long long )x1) - (long long )x2 >= 0LL [2024-01-29 14:20:29,024 INFO L98 nessWitnessExtractor]: Location invariant before [L59-L59] (long long )x1 - (long long )x2 >= 0LL [2024-01-29 14:20:29,024 INFO L98 nessWitnessExtractor]: Location invariant before [L59-L59] x1 == 0 [2024-01-29 14:20:29,024 INFO L98 nessWitnessExtractor]: Location invariant before [L59-L59] (0LL - (long long )x1) + (long long )x2 >= 0LL [2024-01-29 14:20:29,024 INFO L98 nessWitnessExtractor]: Location invariant before [L59-L59] x2 == 0 [2024-01-29 14:20:29,025 INFO L98 nessWitnessExtractor]: Location invariant before [L59-L59] (long long )x1 + (long long )x2 >= 0LL [2024-01-29 14:20:29,025 INFO L98 nessWitnessExtractor]: Location invariant before [L22-L25] x2 == 0 [2024-01-29 14:20:29,025 INFO L98 nessWitnessExtractor]: Loop invariant at [L49-L51] (unsigned long )_argptr == 0UL [2024-01-29 14:20:29,025 INFO L98 nessWitnessExtractor]: Loop invariant at [L41-L43] (unsigned long )_argptr == 0UL [2024-01-29 14:20:29,025 INFO L98 nessWitnessExtractor]: Location invariant before [L60-L60] x2 == 0 [2024-01-29 14:20:29,025 INFO L98 nessWitnessExtractor]: Location invariant before [L42-L42] (unsigned long )_argptr == 0UL [2024-01-29 14:20:29,026 INFO L98 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-01-29 14:20:29,026 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] (unsigned long )_argptr == 0UL [2024-01-29 14:20:29,047 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-29 14:20:29,203 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/test-easy1.wvr.c[1902,1915] [2024-01-29 14:20:29,208 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 14:20:29,217 INFO L202 MainTranslator]: Completed pre-run [2024-01-29 14:20:29,228 WARN L424 MainDispatcher]: Unable to annotate extern int pthread_create (pthread_t *__restrict __newthread, const pthread_attr_t *__restrict __attr, void *(*__start_routine) (void *), void *__restrict __arg) __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 3))); 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 [2024-01-29 14:20:29,272 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/test-easy1.wvr.c[1902,1915] [2024-01-29 14:20:29,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 14:20:29,288 INFO L206 MainTranslator]: Completed translation [2024-01-29 14:20:29,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:29 WrapperNode [2024-01-29 14:20:29,289 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-29 14:20:29,290 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-29 14:20:29,290 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-29 14:20:29,290 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-29 14:20:29,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:29" (1/1) ... [2024-01-29 14:20:29,303 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:29" (1/1) ... [2024-01-29 14:20:29,320 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2024-01-29 14:20:29,321 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-29 14:20:29,322 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-29 14:20:29,322 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-29 14:20:29,322 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-29 14:20:29,330 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:29" (1/1) ... [2024-01-29 14:20:29,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:29" (1/1) ... [2024-01-29 14:20:29,333 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:29" (1/1) ... [2024-01-29 14:20:29,349 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-29 14:20:29,349 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:29" (1/1) ... [2024-01-29 14:20:29,350 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:29" (1/1) ... [2024-01-29 14:20:29,355 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:29" (1/1) ... [2024-01-29 14:20:29,359 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:29" (1/1) ... [2024-01-29 14:20:29,360 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:29" (1/1) ... [2024-01-29 14:20:29,361 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:29" (1/1) ... [2024-01-29 14:20:29,363 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-29 14:20:29,364 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-29 14:20:29,364 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-29 14:20:29,364 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-29 14:20:29,365 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:29" (1/1) ... [2024-01-29 14:20:29,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 14:20:29,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:20:29,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-29 14:20:29,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-29 14:20:29,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-29 14:20:29,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-29 14:20:29,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-29 14:20:29,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-29 14:20:29,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-29 14:20:29,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-29 14:20:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-29 14:20:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-29 14:20:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-29 14:20:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-29 14:20:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-29 14:20:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-29 14:20:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-29 14:20:29,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-29 14:20:29,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-29 14:20:29,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-29 14:20:29,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-29 14:20:29,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-29 14:20:29,425 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-29 14:20:29,562 INFO L244 CfgBuilder]: Building ICFG [2024-01-29 14:20:29,564 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-29 14:20:29,746 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-29 14:20:29,747 INFO L293 CfgBuilder]: Performing block encoding [2024-01-29 14:20:29,878 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-29 14:20:29,883 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-29 14:20:29,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 02:20:29 BoogieIcfgContainer [2024-01-29 14:20:29,885 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-29 14:20:29,889 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-29 14:20:29,889 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-29 14:20:29,892 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-29 14:20:29,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:20:27" (1/4) ... [2024-01-29 14:20:29,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45dab1ff and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 02:20:29, skipping insertion in model container [2024-01-29 14:20:29,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 02:20:28" (2/4) ... [2024-01-29 14:20:29,894 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45dab1ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 02:20:29, skipping insertion in model container [2024-01-29 14:20:29,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:29" (3/4) ... [2024-01-29 14:20:29,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45dab1ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 02:20:29, skipping insertion in model container [2024-01-29 14:20:29,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 02:20:29" (4/4) ... [2024-01-29 14:20:29,897 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2024-01-29 14:20:29,915 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-29 14:20:29,916 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-01-29 14:20:29,916 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-29 14:20:30,011 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-29 14:20:30,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 49 transitions, 112 flow [2024-01-29 14:20:30,098 INFO L124 PetriNetUnfolderBase]: 2/47 cut-off events. [2024-01-29 14:20:30,098 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 14:20:30,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 47 events. 2/47 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 75 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-01-29 14:20:30,103 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 49 transitions, 112 flow [2024-01-29 14:20:30,107 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 46 transitions, 104 flow [2024-01-29 14:20:30,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 14:20:30,129 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;@31c8ae62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 14:20:30,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-01-29 14:20:30,133 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 14:20:30,134 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 14:20:30,134 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 14:20:30,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:30,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 14:20:30,135 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:30,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:30,140 INFO L85 PathProgramCache]: Analyzing trace with hash 8790, now seen corresponding path program 1 times [2024-01-29 14:20:30,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:30,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490784771] [2024-01-29 14:20:30,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:30,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:30,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:30,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490784771] [2024-01-29 14:20:30,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490784771] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:20:30,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:20:30,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:20:30,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864297703] [2024-01-29 14:20:30,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:20:30,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:20:30,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:30,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:20:30,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:20:30,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 49 [2024-01-29 14:20:30,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:30,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:30,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 49 [2024-01-29 14:20:30,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:30,462 INFO L124 PetriNetUnfolderBase]: 49/140 cut-off events. [2024-01-29 14:20:30,463 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-01-29 14:20:30,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 140 events. 49/140 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 607 event pairs, 45 based on Foata normal form. 3/117 useless extension candidates. Maximal degree in co-relation 196. Up to 98 conditions per place. [2024-01-29 14:20:30,466 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 15 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2024-01-29 14:20:30,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 132 flow [2024-01-29 14:20:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:20:30,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:20:30,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-01-29 14:20:30,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7074829931972789 [2024-01-29 14:20:30,485 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 104 flow. Second operand 3 states and 104 transitions. [2024-01-29 14:20:30,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 132 flow [2024-01-29 14:20:30,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 124 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-29 14:20:30,495 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 94 flow [2024-01-29 14:20:30,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2024-01-29 14:20:30,502 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -5 predicate places. [2024-01-29 14:20:30,502 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 94 flow [2024-01-29 14:20:30,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:30,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:30,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-29 14:20:30,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-29 14:20:30,505 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:30,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:30,506 INFO L85 PathProgramCache]: Analyzing trace with hash 272726, now seen corresponding path program 1 times [2024-01-29 14:20:30,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:30,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460222028] [2024-01-29 14:20:30,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:30,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:30,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:30,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460222028] [2024-01-29 14:20:30,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460222028] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:20:30,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:20:30,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:20:30,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306234077] [2024-01-29 14:20:30,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:20:30,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:20:30,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:30,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:20:30,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:20:30,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 49 [2024-01-29 14:20:30,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:30,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:30,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 49 [2024-01-29 14:20:30,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:30,641 INFO L124 PetriNetUnfolderBase]: 49/138 cut-off events. [2024-01-29 14:20:30,641 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 14:20:30,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 138 events. 49/138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 621 event pairs, 45 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 230. Up to 97 conditions per place. [2024-01-29 14:20:30,644 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 16 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2024-01-29 14:20:30,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 41 transitions, 126 flow [2024-01-29 14:20:30,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:20:30,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:20:30,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-01-29 14:20:30,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7074829931972789 [2024-01-29 14:20:30,646 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 94 flow. Second operand 3 states and 104 transitions. [2024-01-29 14:20:30,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 41 transitions, 126 flow [2024-01-29 14:20:30,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 41 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:20:30,648 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 90 flow [2024-01-29 14:20:30,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2024-01-29 14:20:30,653 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -7 predicate places. [2024-01-29 14:20:30,653 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 90 flow [2024-01-29 14:20:30,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:30,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:30,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-29 14:20:30,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-29 14:20:30,655 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:30,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:30,655 INFO L85 PathProgramCache]: Analyzing trace with hash -464908527, now seen corresponding path program 1 times [2024-01-29 14:20:30,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:30,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147071398] [2024-01-29 14:20:30,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:30,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:30,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:30,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:30,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147071398] [2024-01-29 14:20:30,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147071398] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:20:30,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:20:30,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:20:30,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561322347] [2024-01-29 14:20:30,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:20:30,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:20:30,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:30,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:20:30,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:20:30,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 49 [2024-01-29 14:20:30,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:30,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:30,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 49 [2024-01-29 14:20:30,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:30,847 INFO L124 PetriNetUnfolderBase]: 49/136 cut-off events. [2024-01-29 14:20:30,847 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-29 14:20:30,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 136 events. 49/136 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 610 event pairs, 45 based on Foata normal form. 1/113 useless extension candidates. Maximal degree in co-relation 228. Up to 98 conditions per place. [2024-01-29 14:20:30,851 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 15 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-01-29 14:20:30,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 120 flow [2024-01-29 14:20:30,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:20:30,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:20:30,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-01-29 14:20:30,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7006802721088435 [2024-01-29 14:20:30,858 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 90 flow. Second operand 3 states and 103 transitions. [2024-01-29 14:20:30,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 120 flow [2024-01-29 14:20:30,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:20:30,861 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 86 flow [2024-01-29 14:20:30,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2024-01-29 14:20:30,863 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -9 predicate places. [2024-01-29 14:20:30,863 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 86 flow [2024-01-29 14:20:30,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:30,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:30,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:30,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-29 14:20:30,864 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:30,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:30,865 INFO L85 PathProgramCache]: Analyzing trace with hash -17228898, now seen corresponding path program 1 times [2024-01-29 14:20:30,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:30,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961590852] [2024-01-29 14:20:30,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:30,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:31,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:31,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:31,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961590852] [2024-01-29 14:20:31,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961590852] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:20:31,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:20:31,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:20:31,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670944499] [2024-01-29 14:20:31,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:20:31,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:20:31,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:31,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:20:31,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:20:31,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 49 [2024-01-29 14:20:31,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:31,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:31,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 49 [2024-01-29 14:20:31,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:31,123 INFO L124 PetriNetUnfolderBase]: 82/198 cut-off events. [2024-01-29 14:20:31,124 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-29 14:20:31,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 198 events. 82/198 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 792 event pairs, 27 based on Foata normal form. 20/203 useless extension candidates. Maximal degree in co-relation 335. Up to 124 conditions per place. [2024-01-29 14:20:31,129 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 22 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2024-01-29 14:20:31,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 139 flow [2024-01-29 14:20:31,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:20:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:20:31,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-01-29 14:20:31,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.673469387755102 [2024-01-29 14:20:31,132 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 86 flow. Second operand 4 states and 132 transitions. [2024-01-29 14:20:31,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 139 flow [2024-01-29 14:20:31,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 135 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:20:31,135 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 78 flow [2024-01-29 14:20:31,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-01-29 14:20:31,137 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -12 predicate places. [2024-01-29 14:20:31,137 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 78 flow [2024-01-29 14:20:31,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:31,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:31,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:31,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-29 14:20:31,139 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:31,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:31,140 INFO L85 PathProgramCache]: Analyzing trace with hash 621738047, now seen corresponding path program 1 times [2024-01-29 14:20:31,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:31,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554973196] [2024-01-29 14:20:31,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:31,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:31,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:31,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554973196] [2024-01-29 14:20:31,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554973196] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:20:31,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:20:31,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:20:31,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485446510] [2024-01-29 14:20:31,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:20:31,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:20:31,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:31,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:20:31,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:20:31,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 49 [2024-01-29 14:20:31,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:31,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:31,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 49 [2024-01-29 14:20:31,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:31,353 INFO L124 PetriNetUnfolderBase]: 68/160 cut-off events. [2024-01-29 14:20:31,353 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-29 14:20:31,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 160 events. 68/160 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 628 event pairs, 3 based on Foata normal form. 20/177 useless extension candidates. Maximal degree in co-relation 270. Up to 90 conditions per place. [2024-01-29 14:20:31,355 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 25 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2024-01-29 14:20:31,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 143 flow [2024-01-29 14:20:31,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:20:31,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:20:31,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-01-29 14:20:31,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6887755102040817 [2024-01-29 14:20:31,357 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 78 flow. Second operand 4 states and 135 transitions. [2024-01-29 14:20:31,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 143 flow [2024-01-29 14:20:31,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 140 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:20:31,359 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 71 flow [2024-01-29 14:20:31,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=71, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2024-01-29 14:20:31,361 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -15 predicate places. [2024-01-29 14:20:31,361 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 71 flow [2024-01-29 14:20:31,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:31,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:31,362 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] [2024-01-29 14:20:31,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-29 14:20:31,362 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:31,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:31,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1385721167, now seen corresponding path program 1 times [2024-01-29 14:20:31,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:31,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021635196] [2024-01-29 14:20:31,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:31,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:31,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:31,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:31,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021635196] [2024-01-29 14:20:31,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021635196] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:20:31,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:20:31,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:20:31,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324502420] [2024-01-29 14:20:31,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:20:31,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:20:31,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:31,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:20:31,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:20:31,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 49 [2024-01-29 14:20:31,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:31,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:31,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 49 [2024-01-29 14:20:31,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:31,523 INFO L124 PetriNetUnfolderBase]: 113/244 cut-off events. [2024-01-29 14:20:31,524 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-29 14:20:31,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 244 events. 113/244 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 995 event pairs, 24 based on Foata normal form. 1/231 useless extension candidates. Maximal degree in co-relation 437. Up to 137 conditions per place. [2024-01-29 14:20:31,525 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 23 selfloop transitions, 5 changer transitions 1/43 dead transitions. [2024-01-29 14:20:31,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 43 transitions, 158 flow [2024-01-29 14:20:31,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:20:31,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:20:31,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-01-29 14:20:31,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7959183673469388 [2024-01-29 14:20:31,527 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 71 flow. Second operand 3 states and 117 transitions. [2024-01-29 14:20:31,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 43 transitions, 158 flow [2024-01-29 14:20:31,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 43 transitions, 153 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:20:31,529 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 93 flow [2024-01-29 14:20:31,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2024-01-29 14:20:31,530 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -14 predicate places. [2024-01-29 14:20:31,530 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 93 flow [2024-01-29 14:20:31,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:31,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:31,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:31,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-29 14:20:31,531 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:31,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:31,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1631295226, now seen corresponding path program 1 times [2024-01-29 14:20:31,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:31,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498903195] [2024-01-29 14:20:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:31,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:31,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:31,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:31,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498903195] [2024-01-29 14:20:31,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498903195] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:20:31,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:20:31,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 14:20:31,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192052438] [2024-01-29 14:20:31,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:20:31,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:20:31,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:31,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:20:31,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:20:31,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 49 [2024-01-29 14:20:31,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:31,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:31,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 49 [2024-01-29 14:20:31,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:31,696 INFO L124 PetriNetUnfolderBase]: 197/380 cut-off events. [2024-01-29 14:20:31,696 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-01-29 14:20:31,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 380 events. 197/380 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1652 event pairs, 35 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 807. Up to 157 conditions per place. [2024-01-29 14:20:31,698 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 41 selfloop transitions, 11 changer transitions 0/61 dead transitions. [2024-01-29 14:20:31,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 61 transitions, 274 flow [2024-01-29 14:20:31,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 14:20:31,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 14:20:31,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-01-29 14:20:31,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6693877551020408 [2024-01-29 14:20:31,700 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 93 flow. Second operand 5 states and 164 transitions. [2024-01-29 14:20:31,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 61 transitions, 274 flow [2024-01-29 14:20:31,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 61 transitions, 267 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 14:20:31,702 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 158 flow [2024-01-29 14:20:31,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=158, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2024-01-29 14:20:31,703 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -8 predicate places. [2024-01-29 14:20:31,703 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 158 flow [2024-01-29 14:20:31,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:31,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:31,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:31,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-29 14:20:31,704 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:31,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:31,705 INFO L85 PathProgramCache]: Analyzing trace with hash 806434952, now seen corresponding path program 2 times [2024-01-29 14:20:31,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:31,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186280964] [2024-01-29 14:20:31,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:31,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:31,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:31,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186280964] [2024-01-29 14:20:31,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186280964] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:20:31,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991318711] [2024-01-29 14:20:31,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-29 14:20:31,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:20:31,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:20:31,763 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) [2024-01-29 14:20:31,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-29 14:20:31,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-29 14:20:31,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:20:31,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-29 14:20:31,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:20:31,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:31,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:20:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:32,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991318711] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-29 14:20:32,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-29 14:20:32,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 5] total 11 [2024-01-29 14:20:32,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618732534] [2024-01-29 14:20:32,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:20:32,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-29 14:20:32,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:32,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-29 14:20:32,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-01-29 14:20:32,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 49 [2024-01-29 14:20:32,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 158 flow. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:32,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:32,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 49 [2024-01-29 14:20:32,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:32,267 INFO L124 PetriNetUnfolderBase]: 309/620 cut-off events. [2024-01-29 14:20:32,268 INFO L125 PetriNetUnfolderBase]: For 466/466 co-relation queries the response was YES. [2024-01-29 14:20:32,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1605 conditions, 620 events. 309/620 cut-off events. For 466/466 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2954 event pairs, 30 based on Foata normal form. 25/633 useless extension candidates. Maximal degree in co-relation 1572. Up to 191 conditions per place. [2024-01-29 14:20:32,271 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 71 selfloop transitions, 24 changer transitions 5/109 dead transitions. [2024-01-29 14:20:32,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 109 transitions, 583 flow [2024-01-29 14:20:32,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-29 14:20:32,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-29 14:20:32,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 276 transitions. [2024-01-29 14:20:32,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7040816326530612 [2024-01-29 14:20:32,273 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 158 flow. Second operand 8 states and 276 transitions. [2024-01-29 14:20:32,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 109 transitions, 583 flow [2024-01-29 14:20:32,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 109 transitions, 583 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-29 14:20:32,277 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 341 flow [2024-01-29 14:20:32,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=341, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2024-01-29 14:20:32,278 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2024-01-29 14:20:32,278 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 341 flow [2024-01-29 14:20:32,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:32,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:32,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:32,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-29 14:20:32,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:20:32,498 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:32,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:32,498 INFO L85 PathProgramCache]: Analyzing trace with hash -476481339, now seen corresponding path program 1 times [2024-01-29 14:20:32,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:32,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890834745] [2024-01-29 14:20:32,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:32,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:32,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:32,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:32,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890834745] [2024-01-29 14:20:32,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890834745] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:20:32,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:20:32,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 14:20:32,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865411239] [2024-01-29 14:20:32,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:20:32,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:20:32,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:32,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:20:32,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:20:32,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 49 [2024-01-29 14:20:32,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 341 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:32,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:32,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 49 [2024-01-29 14:20:32,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:32,715 INFO L124 PetriNetUnfolderBase]: 327/684 cut-off events. [2024-01-29 14:20:32,715 INFO L125 PetriNetUnfolderBase]: For 1853/1861 co-relation queries the response was YES. [2024-01-29 14:20:32,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2275 conditions, 684 events. 327/684 cut-off events. For 1853/1861 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3515 event pairs, 65 based on Foata normal form. 26/703 useless extension candidates. Maximal degree in co-relation 2230. Up to 219 conditions per place. [2024-01-29 14:20:32,720 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 60 selfloop transitions, 17 changer transitions 3/89 dead transitions. [2024-01-29 14:20:32,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 89 transitions, 695 flow [2024-01-29 14:20:32,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 14:20:32,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 14:20:32,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-01-29 14:20:32,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-01-29 14:20:32,722 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 341 flow. Second operand 5 states and 168 transitions. [2024-01-29 14:20:32,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 89 transitions, 695 flow [2024-01-29 14:20:32,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 89 transitions, 685 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-01-29 14:20:32,730 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 472 flow [2024-01-29 14:20:32,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=472, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2024-01-29 14:20:32,731 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2024-01-29 14:20:32,731 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 472 flow [2024-01-29 14:20:32,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:32,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:32,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:32,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-29 14:20:32,733 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:32,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:32,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1413062891, now seen corresponding path program 2 times [2024-01-29 14:20:32,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:32,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31786560] [2024-01-29 14:20:32,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:32,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:32,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:32,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31786560] [2024-01-29 14:20:32,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31786560] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:20:32,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:20:32,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 14:20:32,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288545354] [2024-01-29 14:20:32,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:20:32,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:20:32,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:32,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:20:32,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:20:32,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 49 [2024-01-29 14:20:32,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 472 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:32,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:32,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 49 [2024-01-29 14:20:32,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:32,932 INFO L124 PetriNetUnfolderBase]: 257/518 cut-off events. [2024-01-29 14:20:32,932 INFO L125 PetriNetUnfolderBase]: For 2297/2297 co-relation queries the response was YES. [2024-01-29 14:20:32,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2043 conditions, 518 events. 257/518 cut-off events. For 2297/2297 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2326 event pairs, 36 based on Foata normal form. 14/529 useless extension candidates. Maximal degree in co-relation 1990. Up to 327 conditions per place. [2024-01-29 14:20:32,937 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 51 selfloop transitions, 20 changer transitions 0/80 dead transitions. [2024-01-29 14:20:32,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 80 transitions, 708 flow [2024-01-29 14:20:32,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 14:20:32,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 14:20:32,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-01-29 14:20:32,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6489795918367347 [2024-01-29 14:20:32,939 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 472 flow. Second operand 5 states and 159 transitions. [2024-01-29 14:20:32,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 80 transitions, 708 flow [2024-01-29 14:20:32,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 80 transitions, 680 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-01-29 14:20:32,949 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 541 flow [2024-01-29 14:20:32,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=541, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2024-01-29 14:20:32,951 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 19 predicate places. [2024-01-29 14:20:32,951 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 541 flow [2024-01-29 14:20:32,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:32,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:32,951 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] [2024-01-29 14:20:32,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-29 14:20:32,952 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:32,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:32,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1468527160, now seen corresponding path program 1 times [2024-01-29 14:20:32,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:32,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89337445] [2024-01-29 14:20:32,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:32,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:33,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:33,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:33,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89337445] [2024-01-29 14:20:33,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89337445] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:20:33,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650671376] [2024-01-29 14:20:33,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:33,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:20:33,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:20:33,109 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) [2024-01-29 14:20:33,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-29 14:20:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:33,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-29 14:20:33,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:20:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:33,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:20:33,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:33,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650671376] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:20:33,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:20:33,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2024-01-29 14:20:33,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814357299] [2024-01-29 14:20:33,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:20:33,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-01-29 14:20:33,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:33,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-01-29 14:20:33,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-01-29 14:20:33,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-01-29 14:20:33,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 541 flow. Second operand has 17 states, 17 states have (on average 24.823529411764707) internal successors, (422), 17 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:33,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:33,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-01-29 14:20:33,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:33,974 INFO L124 PetriNetUnfolderBase]: 461/938 cut-off events. [2024-01-29 14:20:33,974 INFO L125 PetriNetUnfolderBase]: For 5696/5696 co-relation queries the response was YES. [2024-01-29 14:20:33,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3903 conditions, 938 events. 461/938 cut-off events. For 5696/5696 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5014 event pairs, 32 based on Foata normal form. 30/965 useless extension candidates. Maximal degree in co-relation 3840. Up to 243 conditions per place. [2024-01-29 14:20:34,006 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 87 selfloop transitions, 65 changer transitions 37/197 dead transitions. [2024-01-29 14:20:34,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 197 transitions, 1791 flow [2024-01-29 14:20:34,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-01-29 14:20:34,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-01-29 14:20:34,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 612 transitions. [2024-01-29 14:20:34,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5947521865889213 [2024-01-29 14:20:34,009 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 541 flow. Second operand 21 states and 612 transitions. [2024-01-29 14:20:34,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 197 transitions, 1791 flow [2024-01-29 14:20:34,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 197 transitions, 1763 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-01-29 14:20:34,021 INFO L231 Difference]: Finished difference. Result has 105 places, 98 transitions, 1229 flow [2024-01-29 14:20:34,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1229, PETRI_PLACES=105, PETRI_TRANSITIONS=98} [2024-01-29 14:20:34,022 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 54 predicate places. [2024-01-29 14:20:34,022 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 98 transitions, 1229 flow [2024-01-29 14:20:34,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 24.823529411764707) internal successors, (422), 17 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:34,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:34,023 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] [2024-01-29 14:20:34,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-29 14:20:34,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-01-29 14:20:34,240 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:34,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:34,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1479044280, now seen corresponding path program 2 times [2024-01-29 14:20:34,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:34,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287383929] [2024-01-29 14:20:34,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:34,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:34,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:34,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:34,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287383929] [2024-01-29 14:20:34,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287383929] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:20:34,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812251413] [2024-01-29 14:20:34,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-29 14:20:34,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:20:34,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:20:34,346 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) [2024-01-29 14:20:34,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-29 14:20:34,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-29 14:20:34,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:20:34,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-29 14:20:34,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:20:34,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:34,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-29 14:20:34,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812251413] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:20:34,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-29 14:20:34,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2024-01-29 14:20:34,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3177137] [2024-01-29 14:20:34,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:20:34,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-29 14:20:34,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:34,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-29 14:20:34,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-01-29 14:20:34,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 49 [2024-01-29 14:20:34,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 98 transitions, 1229 flow. Second operand has 8 states, 8 states have (on average 25.75) internal successors, (206), 8 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:34,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:34,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 49 [2024-01-29 14:20:34,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:34,805 INFO L124 PetriNetUnfolderBase]: 461/953 cut-off events. [2024-01-29 14:20:34,806 INFO L125 PetriNetUnfolderBase]: For 10043/10043 co-relation queries the response was YES. [2024-01-29 14:20:34,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4960 conditions, 953 events. 461/953 cut-off events. For 10043/10043 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5127 event pairs, 190 based on Foata normal form. 3/949 useless extension candidates. Maximal degree in co-relation 4891. Up to 535 conditions per place. [2024-01-29 14:20:34,817 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 63 selfloop transitions, 56 changer transitions 20/148 dead transitions. [2024-01-29 14:20:34,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 148 transitions, 2064 flow [2024-01-29 14:20:34,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-29 14:20:34,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-29 14:20:34,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 234 transitions. [2024-01-29 14:20:34,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5969387755102041 [2024-01-29 14:20:34,819 INFO L175 Difference]: Start difference. First operand has 105 places, 98 transitions, 1229 flow. Second operand 8 states and 234 transitions. [2024-01-29 14:20:34,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 148 transitions, 2064 flow [2024-01-29 14:20:34,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 148 transitions, 1834 flow, removed 109 selfloop flow, removed 5 redundant places. [2024-01-29 14:20:34,851 INFO L231 Difference]: Finished difference. Result has 110 places, 119 transitions, 1523 flow [2024-01-29 14:20:34,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1523, PETRI_PLACES=110, PETRI_TRANSITIONS=119} [2024-01-29 14:20:34,852 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 59 predicate places. [2024-01-29 14:20:34,852 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 119 transitions, 1523 flow [2024-01-29 14:20:34,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.75) internal successors, (206), 8 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:34,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:34,853 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] [2024-01-29 14:20:34,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-29 14:20:35,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:20:35,071 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:35,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:35,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1568684338, now seen corresponding path program 3 times [2024-01-29 14:20:35,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:35,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904889564] [2024-01-29 14:20:35,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:35,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:35,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:35,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:35,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904889564] [2024-01-29 14:20:35,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904889564] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:20:35,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123655521] [2024-01-29 14:20:35,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-29 14:20:35,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:20:35,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:20:35,190 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) [2024-01-29 14:20:35,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-29 14:20:35,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-01-29 14:20:35,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:20:35,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-29 14:20:35,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:20:35,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:35,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-29 14:20:35,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123655521] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:20:35,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-29 14:20:35,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2024-01-29 14:20:35,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613402187] [2024-01-29 14:20:35,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:20:35,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-29 14:20:35,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:35,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-29 14:20:35,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-01-29 14:20:35,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-01-29 14:20:35,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 119 transitions, 1523 flow. Second operand has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:35,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:35,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-01-29 14:20:35,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:35,638 INFO L124 PetriNetUnfolderBase]: 428/894 cut-off events. [2024-01-29 14:20:35,638 INFO L125 PetriNetUnfolderBase]: For 9598/9616 co-relation queries the response was YES. [2024-01-29 14:20:35,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4657 conditions, 894 events. 428/894 cut-off events. For 9598/9616 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4729 event pairs, 24 based on Foata normal form. 6/895 useless extension candidates. Maximal degree in co-relation 4599. Up to 202 conditions per place. [2024-01-29 14:20:35,648 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 70 selfloop transitions, 48 changer transitions 33/159 dead transitions. [2024-01-29 14:20:35,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 159 transitions, 2229 flow [2024-01-29 14:20:35,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-29 14:20:35,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-29 14:20:35,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 231 transitions. [2024-01-29 14:20:35,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-01-29 14:20:35,650 INFO L175 Difference]: Start difference. First operand has 110 places, 119 transitions, 1523 flow. Second operand 8 states and 231 transitions. [2024-01-29 14:20:35,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 159 transitions, 2229 flow [2024-01-29 14:20:35,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 159 transitions, 2187 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-01-29 14:20:35,693 INFO L231 Difference]: Finished difference. Result has 116 places, 105 transitions, 1370 flow [2024-01-29 14:20:35,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1489, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1370, PETRI_PLACES=116, PETRI_TRANSITIONS=105} [2024-01-29 14:20:35,695 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 65 predicate places. [2024-01-29 14:20:35,695 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 105 transitions, 1370 flow [2024-01-29 14:20:35,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:35,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:35,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:35,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-29 14:20:35,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:20:35,913 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:35,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:35,914 INFO L85 PathProgramCache]: Analyzing trace with hash 719708394, now seen corresponding path program 4 times [2024-01-29 14:20:35,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:35,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395505260] [2024-01-29 14:20:35,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:35,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:36,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:36,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:36,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395505260] [2024-01-29 14:20:36,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395505260] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:20:36,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397854770] [2024-01-29 14:20:36,040 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-29 14:20:36,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:20:36,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:20:36,041 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) [2024-01-29 14:20:36,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-29 14:20:36,102 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-29 14:20:36,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:20:36,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-29 14:20:36,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:20:36,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:36,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:20:36,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-29 14:20:36,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397854770] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:20:36,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:20:36,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 10 [2024-01-29 14:20:36,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427414383] [2024-01-29 14:20:36,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:20:36,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-29 14:20:36,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:36,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-29 14:20:36,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-29 14:20:36,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-01-29 14:20:36,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 105 transitions, 1370 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:36,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:36,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-01-29 14:20:36,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:36,620 INFO L124 PetriNetUnfolderBase]: 460/941 cut-off events. [2024-01-29 14:20:36,621 INFO L125 PetriNetUnfolderBase]: For 13254/13254 co-relation queries the response was YES. [2024-01-29 14:20:36,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5522 conditions, 941 events. 460/941 cut-off events. For 13254/13254 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4927 event pairs, 40 based on Foata normal form. 24/962 useless extension candidates. Maximal degree in co-relation 5453. Up to 354 conditions per place. [2024-01-29 14:20:36,634 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 130 selfloop transitions, 70 changer transitions 12/220 dead transitions. [2024-01-29 14:20:36,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 220 transitions, 3114 flow [2024-01-29 14:20:36,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-29 14:20:36,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-29 14:20:36,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 324 transitions. [2024-01-29 14:20:36,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-01-29 14:20:36,636 INFO L175 Difference]: Start difference. First operand has 116 places, 105 transitions, 1370 flow. Second operand 12 states and 324 transitions. [2024-01-29 14:20:36,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 220 transitions, 3114 flow [2024-01-29 14:20:36,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 220 transitions, 2836 flow, removed 59 selfloop flow, removed 12 redundant places. [2024-01-29 14:20:36,674 INFO L231 Difference]: Finished difference. Result has 118 places, 150 transitions, 2129 flow [2024-01-29 14:20:36,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2129, PETRI_PLACES=118, PETRI_TRANSITIONS=150} [2024-01-29 14:20:36,675 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 67 predicate places. [2024-01-29 14:20:36,675 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 150 transitions, 2129 flow [2024-01-29 14:20:36,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:36,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:36,676 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:36,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-29 14:20:36,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-01-29 14:20:36,889 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:36,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:36,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1881183214, now seen corresponding path program 5 times [2024-01-29 14:20:36,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:36,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53896587] [2024-01-29 14:20:36,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:36,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:36,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:36,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53896587] [2024-01-29 14:20:36,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53896587] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:20:36,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836451146] [2024-01-29 14:20:36,991 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-29 14:20:36,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:20:36,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:20:36,992 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:20:37,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-29 14:20:37,056 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-01-29 14:20:37,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:20:37,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-29 14:20:37,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:20:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:37,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:20:37,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:37,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836451146] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:20:37,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:20:37,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2024-01-29 14:20:37,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279818514] [2024-01-29 14:20:37,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:20:37,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-29 14:20:37,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:37,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-29 14:20:37,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-01-29 14:20:37,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-01-29 14:20:37,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 150 transitions, 2129 flow. Second operand has 11 states, 11 states have (on average 21.181818181818183) internal successors, (233), 11 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:37,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:37,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-01-29 14:20:37,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:37,614 INFO L124 PetriNetUnfolderBase]: 652/1333 cut-off events. [2024-01-29 14:20:37,614 INFO L125 PetriNetUnfolderBase]: For 17036/17036 co-relation queries the response was YES. [2024-01-29 14:20:37,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7622 conditions, 1333 events. 652/1333 cut-off events. For 17036/17036 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7580 event pairs, 54 based on Foata normal form. 8/1338 useless extension candidates. Maximal degree in co-relation 7534. Up to 352 conditions per place. [2024-01-29 14:20:37,631 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 157 selfloop transitions, 107 changer transitions 1/272 dead transitions. [2024-01-29 14:20:37,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 272 transitions, 3953 flow [2024-01-29 14:20:37,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-29 14:20:37,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-29 14:20:37,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 309 transitions. [2024-01-29 14:20:37,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255102040816326 [2024-01-29 14:20:37,633 INFO L175 Difference]: Start difference. First operand has 118 places, 150 transitions, 2129 flow. Second operand 12 states and 309 transitions. [2024-01-29 14:20:37,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 272 transitions, 3953 flow [2024-01-29 14:20:37,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 272 transitions, 3877 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-01-29 14:20:37,695 INFO L231 Difference]: Finished difference. Result has 129 places, 197 transitions, 3260 flow [2024-01-29 14:20:37,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2079, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3260, PETRI_PLACES=129, PETRI_TRANSITIONS=197} [2024-01-29 14:20:37,696 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 78 predicate places. [2024-01-29 14:20:37,696 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 197 transitions, 3260 flow [2024-01-29 14:20:37,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.181818181818183) internal successors, (233), 11 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:37,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:37,697 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:37,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-29 14:20:37,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-01-29 14:20:37,914 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:37,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:37,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1139301204, now seen corresponding path program 6 times [2024-01-29 14:20:37,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:37,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529693136] [2024-01-29 14:20:37,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:37,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:37,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-29 14:20:37,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:37,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529693136] [2024-01-29 14:20:37,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529693136] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:20:37,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211281546] [2024-01-29 14:20:37,979 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-29 14:20:37,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:20:37,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:20:37,981 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:20:38,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-01-29 14:20:38,047 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-01-29 14:20:38,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:20:38,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-29 14:20:38,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:20:38,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:38,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:20:38,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:38,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211281546] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:20:38,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:20:38,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2024-01-29 14:20:38,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84795726] [2024-01-29 14:20:38,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:20:38,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-29 14:20:38,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:38,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-29 14:20:38,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-01-29 14:20:38,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-01-29 14:20:38,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 197 transitions, 3260 flow. Second operand has 11 states, 11 states have (on average 21.181818181818183) internal successors, (233), 11 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:38,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:38,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-01-29 14:20:38,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:38,609 INFO L124 PetriNetUnfolderBase]: 648/1366 cut-off events. [2024-01-29 14:20:38,609 INFO L125 PetriNetUnfolderBase]: For 20837/20855 co-relation queries the response was YES. [2024-01-29 14:20:38,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8384 conditions, 1366 events. 648/1366 cut-off events. For 20837/20855 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7729 event pairs, 54 based on Foata normal form. 16/1377 useless extension candidates. Maximal degree in co-relation 8290. Up to 286 conditions per place. [2024-01-29 14:20:38,630 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 157 selfloop transitions, 100 changer transitions 0/264 dead transitions. [2024-01-29 14:20:38,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 264 transitions, 4397 flow [2024-01-29 14:20:38,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-29 14:20:38,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-29 14:20:38,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-01-29 14:20:38,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231910946196661 [2024-01-29 14:20:38,634 INFO L175 Difference]: Start difference. First operand has 129 places, 197 transitions, 3260 flow. Second operand 11 states and 282 transitions. [2024-01-29 14:20:38,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 264 transitions, 4397 flow [2024-01-29 14:20:38,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 264 transitions, 4260 flow, removed 63 selfloop flow, removed 2 redundant places. [2024-01-29 14:20:38,731 INFO L231 Difference]: Finished difference. Result has 139 places, 200 transitions, 3526 flow [2024-01-29 14:20:38,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3115, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3526, PETRI_PLACES=139, PETRI_TRANSITIONS=200} [2024-01-29 14:20:38,732 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 88 predicate places. [2024-01-29 14:20:38,733 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 200 transitions, 3526 flow [2024-01-29 14:20:38,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.181818181818183) internal successors, (233), 11 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:38,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:38,733 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:38,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-01-29 14:20:38,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:20:38,951 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:38,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:38,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1818027364, now seen corresponding path program 7 times [2024-01-29 14:20:38,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:38,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874033440] [2024-01-29 14:20:38,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:38,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-29 14:20:39,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:39,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874033440] [2024-01-29 14:20:39,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874033440] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:20:39,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506830599] [2024-01-29 14:20:39,009 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-29 14:20:39,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:20:39,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:20:39,010 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:20:39,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-01-29 14:20:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:39,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-29 14:20:39,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:20:39,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:39,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:20:39,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:39,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506830599] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:20:39,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:20:39,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2024-01-29 14:20:39,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287431860] [2024-01-29 14:20:39,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:20:39,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-29 14:20:39,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:39,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-29 14:20:39,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-01-29 14:20:39,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-01-29 14:20:39,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 200 transitions, 3526 flow. Second operand has 11 states, 11 states have (on average 21.181818181818183) internal successors, (233), 11 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:39,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:39,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-01-29 14:20:39,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:39,579 INFO L124 PetriNetUnfolderBase]: 582/1221 cut-off events. [2024-01-29 14:20:39,580 INFO L125 PetriNetUnfolderBase]: For 17980/17998 co-relation queries the response was YES. [2024-01-29 14:20:39,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7777 conditions, 1221 events. 582/1221 cut-off events. For 17980/17998 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6609 event pairs, 64 based on Foata normal form. 16/1232 useless extension candidates. Maximal degree in co-relation 7679. Up to 355 conditions per place. [2024-01-29 14:20:39,597 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 130 selfloop transitions, 85 changer transitions 15/237 dead transitions. [2024-01-29 14:20:39,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 237 transitions, 4336 flow [2024-01-29 14:20:39,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-29 14:20:39,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-29 14:20:39,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 260 transitions. [2024-01-29 14:20:39,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48237476808905383 [2024-01-29 14:20:39,599 INFO L175 Difference]: Start difference. First operand has 139 places, 200 transitions, 3526 flow. Second operand 11 states and 260 transitions. [2024-01-29 14:20:39,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 237 transitions, 4336 flow [2024-01-29 14:20:39,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 237 transitions, 4174 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-01-29 14:20:39,675 INFO L231 Difference]: Finished difference. Result has 144 places, 198 transitions, 3600 flow [2024-01-29 14:20:39,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3239, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3600, PETRI_PLACES=144, PETRI_TRANSITIONS=198} [2024-01-29 14:20:39,675 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 93 predicate places. [2024-01-29 14:20:39,676 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 198 transitions, 3600 flow [2024-01-29 14:20:39,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.181818181818183) internal successors, (233), 11 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:39,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:39,676 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:39,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-01-29 14:20:39,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-01-29 14:20:39,891 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:39,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:39,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1321501071, now seen corresponding path program 8 times [2024-01-29 14:20:39,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:39,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233600099] [2024-01-29 14:20:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:39,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:40,016 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:40,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:40,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233600099] [2024-01-29 14:20:40,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233600099] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:20:40,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493302310] [2024-01-29 14:20:40,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-29 14:20:40,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:20:40,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:20:40,018 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:20:40,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-01-29 14:20:40,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-29 14:20:40,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:20:40,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-29 14:20:40,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:20:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:40,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:20:40,308 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-29 14:20:40,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493302310] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:20:40,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:20:40,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 5] total 16 [2024-01-29 14:20:40,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735362121] [2024-01-29 14:20:40,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:20:40,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-01-29 14:20:40,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:40,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-01-29 14:20:40,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-01-29 14:20:40,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-01-29 14:20:40,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 198 transitions, 3600 flow. Second operand has 16 states, 16 states have (on average 22.1875) internal successors, (355), 16 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:40,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:40,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-01-29 14:20:40,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:41,225 INFO L124 PetriNetUnfolderBase]: 1099/2211 cut-off events. [2024-01-29 14:20:41,225 INFO L125 PetriNetUnfolderBase]: For 36340/36358 co-relation queries the response was YES. [2024-01-29 14:20:41,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14364 conditions, 2211 events. 1099/2211 cut-off events. For 36340/36358 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 13219 event pairs, 190 based on Foata normal form. 58/2264 useless extension candidates. Maximal degree in co-relation 14265. Up to 807 conditions per place. [2024-01-29 14:20:41,248 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 290 selfloop transitions, 151 changer transitions 4/452 dead transitions. [2024-01-29 14:20:41,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 452 transitions, 8007 flow [2024-01-29 14:20:41,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-01-29 14:20:41,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-01-29 14:20:41,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 510 transitions. [2024-01-29 14:20:41,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547798066595059 [2024-01-29 14:20:41,250 INFO L175 Difference]: Start difference. First operand has 144 places, 198 transitions, 3600 flow. Second operand 19 states and 510 transitions. [2024-01-29 14:20:41,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 452 transitions, 8007 flow [2024-01-29 14:20:41,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 452 transitions, 7915 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-01-29 14:20:41,378 INFO L231 Difference]: Finished difference. Result has 171 places, 314 transitions, 6185 flow [2024-01-29 14:20:41,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3531, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6185, PETRI_PLACES=171, PETRI_TRANSITIONS=314} [2024-01-29 14:20:41,379 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 120 predicate places. [2024-01-29 14:20:41,379 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 314 transitions, 6185 flow [2024-01-29 14:20:41,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 22.1875) internal successors, (355), 16 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:41,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:41,379 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:41,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-01-29 14:20:41,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-01-29 14:20:41,580 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:41,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:41,581 INFO L85 PathProgramCache]: Analyzing trace with hash -277470157, now seen corresponding path program 9 times [2024-01-29 14:20:41,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:41,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108322013] [2024-01-29 14:20:41,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:41,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:41,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:41,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:41,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108322013] [2024-01-29 14:20:41,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108322013] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:20:41,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753643573] [2024-01-29 14:20:41,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-29 14:20:41,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:20:41,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:20:41,711 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:20:41,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-01-29 14:20:41,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-01-29 14:20:41,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:20:41,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-29 14:20:41,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:20:41,889 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-29 14:20:41,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:20:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-29 14:20:42,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753643573] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:20:42,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:20:42,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-01-29 14:20:42,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530826816] [2024-01-29 14:20:42,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:20:42,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-01-29 14:20:42,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:42,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-01-29 14:20:42,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-01-29 14:20:42,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-01-29 14:20:42,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 314 transitions, 6185 flow. Second operand has 18 states, 18 states have (on average 25.0) internal successors, (450), 18 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:42,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:42,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-01-29 14:20:42,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:43,233 INFO L124 PetriNetUnfolderBase]: 1632/3354 cut-off events. [2024-01-29 14:20:43,233 INFO L125 PetriNetUnfolderBase]: For 62554/62554 co-relation queries the response was YES. [2024-01-29 14:20:43,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23194 conditions, 3354 events. 1632/3354 cut-off events. For 62554/62554 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 22730 event pairs, 132 based on Foata normal form. 32/3383 useless extension candidates. Maximal degree in co-relation 23083. Up to 691 conditions per place. [2024-01-29 14:20:43,363 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 128 selfloop transitions, 396 changer transitions 35/567 dead transitions. [2024-01-29 14:20:43,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 567 transitions, 11013 flow [2024-01-29 14:20:43,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-01-29 14:20:43,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-01-29 14:20:43,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 846 transitions. [2024-01-29 14:20:43,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5755102040816327 [2024-01-29 14:20:43,366 INFO L175 Difference]: Start difference. First operand has 171 places, 314 transitions, 6185 flow. Second operand 30 states and 846 transitions. [2024-01-29 14:20:43,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 567 transitions, 11013 flow [2024-01-29 14:20:43,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 567 transitions, 10552 flow, removed 123 selfloop flow, removed 3 redundant places. [2024-01-29 14:20:43,604 INFO L231 Difference]: Finished difference. Result has 206 places, 460 transitions, 9803 flow [2024-01-29 14:20:43,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5774, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9803, PETRI_PLACES=206, PETRI_TRANSITIONS=460} [2024-01-29 14:20:43,605 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 155 predicate places. [2024-01-29 14:20:43,606 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 460 transitions, 9803 flow [2024-01-29 14:20:43,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 25.0) internal successors, (450), 18 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:43,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:43,606 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:43,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-01-29 14:20:43,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:20:43,811 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:43,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:43,812 INFO L85 PathProgramCache]: Analyzing trace with hash 262548133, now seen corresponding path program 10 times [2024-01-29 14:20:43,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:43,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128704843] [2024-01-29 14:20:43,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:43,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-29 14:20:43,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:43,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128704843] [2024-01-29 14:20:43,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128704843] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:20:43,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219884711] [2024-01-29 14:20:43,929 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-29 14:20:43,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:20:43,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:20:43,931 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:20:43,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-01-29 14:20:44,009 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-29 14:20:44,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:20:44,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-29 14:20:44,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:20:44,129 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:44,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:20:44,164 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-01-29 14:20:44,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219884711] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:20:44,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:20:44,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 13 [2024-01-29 14:20:44,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592999241] [2024-01-29 14:20:44,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:20:44,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-29 14:20:44,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:44,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-29 14:20:44,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-01-29 14:20:44,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-01-29 14:20:44,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 460 transitions, 9803 flow. Second operand has 13 states, 13 states have (on average 21.307692307692307) internal successors, (277), 13 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) [2024-01-29 14:20:44,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:44,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-01-29 14:20:44,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:45,618 INFO L124 PetriNetUnfolderBase]: 2258/4505 cut-off events. [2024-01-29 14:20:45,619 INFO L125 PetriNetUnfolderBase]: For 104911/104911 co-relation queries the response was YES. [2024-01-29 14:20:45,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34788 conditions, 4505 events. 2258/4505 cut-off events. For 104911/104911 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 32045 event pairs, 342 based on Foata normal form. 66/4568 useless extension candidates. Maximal degree in co-relation 34667. Up to 2109 conditions per place. [2024-01-29 14:20:45,681 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 461 selfloop transitions, 322 changer transitions 18/808 dead transitions. [2024-01-29 14:20:45,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 808 transitions, 18187 flow [2024-01-29 14:20:45,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-01-29 14:20:45,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-01-29 14:20:45,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 503 transitions. [2024-01-29 14:20:45,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513265306122449 [2024-01-29 14:20:45,685 INFO L175 Difference]: Start difference. First operand has 206 places, 460 transitions, 9803 flow. Second operand 20 states and 503 transitions. [2024-01-29 14:20:45,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 808 transitions, 18187 flow [2024-01-29 14:20:46,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 808 transitions, 16983 flow, removed 523 selfloop flow, removed 11 redundant places. [2024-01-29 14:20:46,257 INFO L231 Difference]: Finished difference. Result has 223 places, 656 transitions, 14616 flow [2024-01-29 14:20:46,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=9201, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=14616, PETRI_PLACES=223, PETRI_TRANSITIONS=656} [2024-01-29 14:20:46,258 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 172 predicate places. [2024-01-29 14:20:46,258 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 656 transitions, 14616 flow [2024-01-29 14:20:46,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 21.307692307692307) internal successors, (277), 13 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) [2024-01-29 14:20:46,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:46,259 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:46,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-01-29 14:20:46,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:20:46,473 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:46,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:46,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1843603447, now seen corresponding path program 11 times [2024-01-29 14:20:46,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:46,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954574132] [2024-01-29 14:20:46,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:46,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:46,623 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:46,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:46,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954574132] [2024-01-29 14:20:46,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954574132] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:20:46,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710928129] [2024-01-29 14:20:46,624 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-29 14:20:46,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:20:46,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:20:46,628 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:20:46,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-01-29 14:20:46,708 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-01-29 14:20:46,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:20:46,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-29 14:20:46,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:20:46,791 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-29 14:20:46,791 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-29 14:20:46,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710928129] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:20:46,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-29 14:20:46,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2024-01-29 14:20:46,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136172690] [2024-01-29 14:20:46,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:20:46,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-29 14:20:46,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:46,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-29 14:20:46,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2024-01-29 14:20:46,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-01-29 14:20:46,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 656 transitions, 14616 flow. Second operand has 8 states, 8 states have (on average 25.375) internal successors, (203), 8 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) [2024-01-29 14:20:46,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:46,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-01-29 14:20:46,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:48,514 INFO L124 PetriNetUnfolderBase]: 2895/5849 cut-off events. [2024-01-29 14:20:48,514 INFO L125 PetriNetUnfolderBase]: For 156979/156999 co-relation queries the response was YES. [2024-01-29 14:20:48,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46732 conditions, 5849 events. 2895/5849 cut-off events. For 156979/156999 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 44245 event pairs, 176 based on Foata normal form. 18/5862 useless extension candidates. Maximal degree in co-relation 46601. Up to 1118 conditions per place. [2024-01-29 14:20:48,601 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 76 selfloop transitions, 718 changer transitions 82/884 dead transitions. [2024-01-29 14:20:48,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 884 transitions, 21202 flow [2024-01-29 14:20:48,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-29 14:20:48,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-29 14:20:48,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 315 transitions. [2024-01-29 14:20:48,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5844155844155844 [2024-01-29 14:20:48,603 INFO L175 Difference]: Start difference. First operand has 223 places, 656 transitions, 14616 flow. Second operand 11 states and 315 transitions. [2024-01-29 14:20:48,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 884 transitions, 21202 flow [2024-01-29 14:20:49,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 884 transitions, 20880 flow, removed 127 selfloop flow, removed 4 redundant places. [2024-01-29 14:20:49,530 INFO L231 Difference]: Finished difference. Result has 235 places, 784 transitions, 20161 flow [2024-01-29 14:20:49,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=14322, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=554, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=20161, PETRI_PLACES=235, PETRI_TRANSITIONS=784} [2024-01-29 14:20:49,531 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 184 predicate places. [2024-01-29 14:20:49,531 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 784 transitions, 20161 flow [2024-01-29 14:20:49,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.375) internal successors, (203), 8 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) [2024-01-29 14:20:49,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:49,531 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:49,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-01-29 14:20:49,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-01-29 14:20:49,741 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:49,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:49,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1521299828, now seen corresponding path program 12 times [2024-01-29 14:20:49,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:49,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124320715] [2024-01-29 14:20:49,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:49,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:49,829 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:49,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:49,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124320715] [2024-01-29 14:20:49,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124320715] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:20:49,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69736827] [2024-01-29 14:20:49,830 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-29 14:20:49,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:20:49,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:20:49,831 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:20:49,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-01-29 14:20:49,906 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-01-29 14:20:49,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:20:49,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-29 14:20:49,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:20:50,002 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:50,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:20:50,097 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:50,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69736827] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:20:50,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:20:50,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-01-29 14:20:50,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697635008] [2024-01-29 14:20:50,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:20:50,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-01-29 14:20:50,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:50,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-01-29 14:20:50,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2024-01-29 14:20:50,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-01-29 14:20:50,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 784 transitions, 20161 flow. Second operand has 15 states, 15 states have (on average 25.4) internal successors, (381), 15 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:50,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:50,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-01-29 14:20:50,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:51,870 INFO L124 PetriNetUnfolderBase]: 2142/4563 cut-off events. [2024-01-29 14:20:51,870 INFO L125 PetriNetUnfolderBase]: For 136895/136895 co-relation queries the response was YES. [2024-01-29 14:20:51,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41477 conditions, 4563 events. 2142/4563 cut-off events. For 136895/136895 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 34132 event pairs, 94 based on Foata normal form. 28/4588 useless extension candidates. Maximal degree in co-relation 41339. Up to 800 conditions per place. [2024-01-29 14:20:51,934 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 454 selfloop transitions, 561 changer transitions 16/1039 dead transitions. [2024-01-29 14:20:51,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 1039 transitions, 27758 flow [2024-01-29 14:20:51,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-01-29 14:20:51,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-01-29 14:20:51,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 684 transitions. [2024-01-29 14:20:51,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5816326530612245 [2024-01-29 14:20:51,940 INFO L175 Difference]: Start difference. First operand has 235 places, 784 transitions, 20161 flow. Second operand 24 states and 684 transitions. [2024-01-29 14:20:51,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 1039 transitions, 27758 flow [2024-01-29 14:20:52,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 1039 transitions, 26621 flow, removed 169 selfloop flow, removed 6 redundant places. [2024-01-29 14:20:52,761 INFO L231 Difference]: Finished difference. Result has 261 places, 900 transitions, 24379 flow [2024-01-29 14:20:52,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=19263, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=782, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=445, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=24379, PETRI_PLACES=261, PETRI_TRANSITIONS=900} [2024-01-29 14:20:52,762 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 210 predicate places. [2024-01-29 14:20:52,762 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 900 transitions, 24379 flow [2024-01-29 14:20:52,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 25.4) internal successors, (381), 15 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:52,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:52,763 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:52,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-01-29 14:20:52,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-01-29 14:20:52,964 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:52,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:52,964 INFO L85 PathProgramCache]: Analyzing trace with hash 213603293, now seen corresponding path program 13 times [2024-01-29 14:20:52,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:52,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722395599] [2024-01-29 14:20:52,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:52,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-29 14:20:53,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:53,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722395599] [2024-01-29 14:20:53,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722395599] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:20:53,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059857368] [2024-01-29 14:20:53,119 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-29 14:20:53,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:20:53,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:20:53,120 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:20:53,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-01-29 14:20:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:53,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-29 14:20:53,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:20:53,275 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:53,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:20:53,379 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:53,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059857368] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:20:53,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:20:53,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2024-01-29 14:20:53,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39875910] [2024-01-29 14:20:53,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:20:53,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-01-29 14:20:53,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:53,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-01-29 14:20:53,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2024-01-29 14:20:53,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-01-29 14:20:53,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 900 transitions, 24379 flow. Second operand has 16 states, 16 states have (on average 20.625) internal successors, (330), 16 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:53,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:53,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-01-29 14:20:53,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:55,352 INFO L124 PetriNetUnfolderBase]: 2476/5281 cut-off events. [2024-01-29 14:20:55,352 INFO L125 PetriNetUnfolderBase]: For 171536/171556 co-relation queries the response was YES. [2024-01-29 14:20:55,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48621 conditions, 5281 events. 2476/5281 cut-off events. For 171536/171556 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 40201 event pairs, 206 based on Foata normal form. 34/5310 useless extension candidates. Maximal degree in co-relation 48475. Up to 1047 conditions per place. [2024-01-29 14:20:55,433 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 491 selfloop transitions, 639 changer transitions 16/1153 dead transitions. [2024-01-29 14:20:55,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 1153 transitions, 32332 flow [2024-01-29 14:20:55,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-01-29 14:20:55,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-01-29 14:20:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 443 transitions. [2024-01-29 14:20:55,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022675736961452 [2024-01-29 14:20:55,435 INFO L175 Difference]: Start difference. First operand has 261 places, 900 transitions, 24379 flow. Second operand 18 states and 443 transitions. [2024-01-29 14:20:55,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 1153 transitions, 32332 flow [2024-01-29 14:20:56,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 1153 transitions, 31777 flow, removed 270 selfloop flow, removed 4 redundant places. [2024-01-29 14:20:56,577 INFO L231 Difference]: Finished difference. Result has 283 places, 996 transitions, 29346 flow [2024-01-29 14:20:56,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=24030, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=554, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=29346, PETRI_PLACES=283, PETRI_TRANSITIONS=996} [2024-01-29 14:20:56,578 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 232 predicate places. [2024-01-29 14:20:56,579 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 996 transitions, 29346 flow [2024-01-29 14:20:56,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 20.625) internal successors, (330), 16 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:56,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:56,579 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:56,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-01-29 14:20:56,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:20:56,780 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:20:56,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:56,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1936819655, now seen corresponding path program 14 times [2024-01-29 14:20:56,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:56,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609344279] [2024-01-29 14:20:56,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:56,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:56,863 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:56,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:56,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609344279] [2024-01-29 14:20:56,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609344279] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:20:56,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055895896] [2024-01-29 14:20:56,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-29 14:20:56,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:20:56,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:20:56,866 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:20:56,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-01-29 14:20:56,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-29 14:20:56,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:20:56,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-29 14:20:56,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:20:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:57,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:20:57,186 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:20:57,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055895896] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:20:57,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:20:57,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2024-01-29 14:20:57,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430115329] [2024-01-29 14:20:57,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:20:57,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-01-29 14:20:57,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:57,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-01-29 14:20:57,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2024-01-29 14:20:57,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-01-29 14:20:57,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 996 transitions, 29346 flow. Second operand has 16 states, 16 states have (on average 20.625) internal successors, (330), 16 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:57,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:57,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-01-29 14:20:57,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:59,261 INFO L124 PetriNetUnfolderBase]: 2341/4913 cut-off events. [2024-01-29 14:20:59,261 INFO L125 PetriNetUnfolderBase]: For 165438/165438 co-relation queries the response was YES. [2024-01-29 14:20:59,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47910 conditions, 4913 events. 2341/4913 cut-off events. For 165438/165438 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 36153 event pairs, 130 based on Foata normal form. 14/4924 useless extension candidates. Maximal degree in co-relation 47753. Up to 1047 conditions per place. [2024-01-29 14:20:59,323 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 461 selfloop transitions, 672 changer transitions 2/1142 dead transitions. [2024-01-29 14:20:59,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 1142 transitions, 33705 flow [2024-01-29 14:20:59,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-01-29 14:20:59,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-01-29 14:20:59,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 466 transitions. [2024-01-29 14:20:59,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5005370569280344 [2024-01-29 14:20:59,333 INFO L175 Difference]: Start difference. First operand has 283 places, 996 transitions, 29346 flow. Second operand 19 states and 466 transitions. [2024-01-29 14:20:59,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 1142 transitions, 33705 flow [2024-01-29 14:21:00,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 1142 transitions, 33326 flow, removed 185 selfloop flow, removed 1 redundant places. [2024-01-29 14:21:00,492 INFO L231 Difference]: Finished difference. Result has 301 places, 1006 transitions, 30802 flow [2024-01-29 14:21:00,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=28839, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=991, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=657, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=30802, PETRI_PLACES=301, PETRI_TRANSITIONS=1006} [2024-01-29 14:21:00,493 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 250 predicate places. [2024-01-29 14:21:00,494 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 1006 transitions, 30802 flow [2024-01-29 14:21:00,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 20.625) internal successors, (330), 16 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:00,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:00,494 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:00,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-01-29 14:21:00,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:21:00,695 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:21:00,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:00,695 INFO L85 PathProgramCache]: Analyzing trace with hash 2104210099, now seen corresponding path program 15 times [2024-01-29 14:21:00,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:00,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313880986] [2024-01-29 14:21:00,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:00,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:00,768 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-29 14:21:00,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:00,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313880986] [2024-01-29 14:21:00,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313880986] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:21:00,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871887589] [2024-01-29 14:21:00,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-29 14:21:00,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:21:00,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:21:00,771 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:21:00,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-01-29 14:21:00,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-01-29 14:21:00,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:21:00,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-29 14:21:00,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:21:00,905 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-29 14:21:00,905 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-29 14:21:00,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871887589] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:00,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-29 14:21:00,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 11 [2024-01-29 14:21:00,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464958247] [2024-01-29 14:21:00,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:00,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-29 14:21:00,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:00,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-29 14:21:00,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-01-29 14:21:00,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-01-29 14:21:00,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 1006 transitions, 30802 flow. Second operand has 8 states, 8 states have (on average 25.5) internal successors, (204), 8 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:00,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:00,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-01-29 14:21:00,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:03,074 INFO L124 PetriNetUnfolderBase]: 2637/5509 cut-off events. [2024-01-29 14:21:03,075 INFO L125 PetriNetUnfolderBase]: For 186023/186023 co-relation queries the response was YES. [2024-01-29 14:21:03,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55103 conditions, 5509 events. 2637/5509 cut-off events. For 186023/186023 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 41449 event pairs, 57 based on Foata normal form. 10/5516 useless extension candidates. Maximal degree in co-relation 54943. Up to 1048 conditions per place. [2024-01-29 14:21:03,131 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 69 selfloop transitions, 134 changer transitions 954/1165 dead transitions. [2024-01-29 14:21:03,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 1165 transitions, 37323 flow [2024-01-29 14:21:03,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-29 14:21:03,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-29 14:21:03,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 318 transitions. [2024-01-29 14:21:03,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5899814471243042 [2024-01-29 14:21:03,132 INFO L175 Difference]: Start difference. First operand has 301 places, 1006 transitions, 30802 flow. Second operand 11 states and 318 transitions. [2024-01-29 14:21:03,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 1165 transitions, 37323 flow [2024-01-29 14:21:04,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 1165 transitions, 36288 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-01-29 14:21:04,609 INFO L231 Difference]: Finished difference. Result has 306 places, 188 transitions, 5028 flow [2024-01-29 14:21:04,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=29892, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1005, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=871, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5028, PETRI_PLACES=306, PETRI_TRANSITIONS=188} [2024-01-29 14:21:04,611 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 255 predicate places. [2024-01-29 14:21:04,611 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 188 transitions, 5028 flow [2024-01-29 14:21:04,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.5) internal successors, (204), 8 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:04,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:04,611 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:04,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-01-29 14:21:04,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-01-29 14:21:04,831 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:21:04,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:04,831 INFO L85 PathProgramCache]: Analyzing trace with hash 369681104, now seen corresponding path program 16 times [2024-01-29 14:21:04,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:04,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658500314] [2024-01-29 14:21:04,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:04,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:05,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:05,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658500314] [2024-01-29 14:21:05,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658500314] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:21:05,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849734130] [2024-01-29 14:21:05,002 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-29 14:21:05,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:21:05,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:21:05,004 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:21:05,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-01-29 14:21:05,081 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-29 14:21:05,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:21:05,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-29 14:21:05,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:21:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:05,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:21:05,310 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-29 14:21:05,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849734130] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:21:05,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:21:05,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 6] total 21 [2024-01-29 14:21:05,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773226376] [2024-01-29 14:21:05,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:21:05,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-01-29 14:21:05,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:05,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-01-29 14:21:05,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2024-01-29 14:21:05,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-01-29 14:21:05,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 188 transitions, 5028 flow. Second operand has 21 states, 21 states have (on average 21.761904761904763) internal successors, (457), 21 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:05,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:05,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-01-29 14:21:05,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:06,406 INFO L124 PetriNetUnfolderBase]: 1329/3018 cut-off events. [2024-01-29 14:21:06,407 INFO L125 PetriNetUnfolderBase]: For 108341/108353 co-relation queries the response was YES. [2024-01-29 14:21:06,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24966 conditions, 3018 events. 1329/3018 cut-off events. For 108341/108353 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 21631 event pairs, 271 based on Foata normal form. 8/3023 useless extension candidates. Maximal degree in co-relation 24858. Up to 970 conditions per place. [2024-01-29 14:21:06,440 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 279 selfloop transitions, 121 changer transitions 12/419 dead transitions. [2024-01-29 14:21:06,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 419 transitions, 10436 flow [2024-01-29 14:21:06,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-01-29 14:21:06,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-01-29 14:21:06,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 616 transitions. [2024-01-29 14:21:06,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-01-29 14:21:06,442 INFO L175 Difference]: Start difference. First operand has 306 places, 188 transitions, 5028 flow. Second operand 24 states and 616 transitions. [2024-01-29 14:21:06,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 419 transitions, 10436 flow [2024-01-29 14:21:06,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 419 transitions, 7835 flow, removed 435 selfloop flow, removed 77 redundant places. [2024-01-29 14:21:06,760 INFO L231 Difference]: Finished difference. Result has 232 places, 254 transitions, 5310 flow [2024-01-29 14:21:06,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3514, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=5310, PETRI_PLACES=232, PETRI_TRANSITIONS=254} [2024-01-29 14:21:06,761 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 181 predicate places. [2024-01-29 14:21:06,761 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 254 transitions, 5310 flow [2024-01-29 14:21:06,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 21.761904761904763) internal successors, (457), 21 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:06,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:06,762 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:06,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-01-29 14:21:06,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-01-29 14:21:06,970 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-01-29 14:21:06,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:06,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1511143994, now seen corresponding path program 17 times [2024-01-29 14:21:06,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:06,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652069550] [2024-01-29 14:21:06,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:06,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:07,137 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:07,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:07,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652069550] [2024-01-29 14:21:07,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652069550] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:21:07,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193418523] [2024-01-29 14:21:07,138 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-29 14:21:07,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:21:07,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:21:07,139 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:21:07,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-01-29 14:21:07,219 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-01-29 14:21:07,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:21:07,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-29 14:21:07,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:21:07,324 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-01-29 14:21:07,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:21:07,451 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-01-29 14:21:07,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193418523] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:21:07,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:21:07,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2024-01-29 14:21:07,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785354413] [2024-01-29 14:21:07,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:21:07,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-01-29 14:21:07,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:07,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-01-29 14:21:07,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2024-01-29 14:21:07,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-01-29 14:21:07,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 254 transitions, 5310 flow. Second operand has 20 states, 20 states have (on average 24.85) internal successors, (497), 20 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:07,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:07,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-01-29 14:21:07,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:08,586 INFO L124 PetriNetUnfolderBase]: 1194/2691 cut-off events. [2024-01-29 14:21:08,587 INFO L125 PetriNetUnfolderBase]: For 47559/47559 co-relation queries the response was YES. [2024-01-29 14:21:08,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18617 conditions, 2691 events. 1194/2691 cut-off events. For 47559/47559 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 18605 event pairs, 60 based on Foata normal form. 48/2736 useless extension candidates. Maximal degree in co-relation 18546. Up to 805 conditions per place. [2024-01-29 14:21:08,609 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 0 selfloop transitions, 0 changer transitions 297/297 dead transitions. [2024-01-29 14:21:08,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 297 transitions, 6001 flow [2024-01-29 14:21:08,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-01-29 14:21:08,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-01-29 14:21:08,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 697 transitions. [2024-01-29 14:21:08,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5470957613814756 [2024-01-29 14:21:08,611 INFO L175 Difference]: Start difference. First operand has 232 places, 254 transitions, 5310 flow. Second operand 26 states and 697 transitions. [2024-01-29 14:21:08,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 297 transitions, 6001 flow [2024-01-29 14:21:08,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 297 transitions, 5629 flow, removed 79 selfloop flow, removed 20 redundant places. [2024-01-29 14:21:08,752 INFO L231 Difference]: Finished difference. Result has 231 places, 0 transitions, 0 flow [2024-01-29 14:21:08,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4581, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=0, PETRI_PLACES=231, PETRI_TRANSITIONS=0} [2024-01-29 14:21:08,752 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 180 predicate places. [2024-01-29 14:21:08,752 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 0 transitions, 0 flow [2024-01-29 14:21:08,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 24.85) internal successors, (497), 20 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:08,755 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 26 remaining) [2024-01-29 14:21:08,755 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 26 remaining) [2024-01-29 14:21:08,755 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 26 remaining) [2024-01-29 14:21:08,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 26 remaining) [2024-01-29 14:21:08,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 26 remaining) [2024-01-29 14:21:08,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 26 remaining) [2024-01-29 14:21:08,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 26 remaining) [2024-01-29 14:21:08,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 26 remaining) [2024-01-29 14:21:08,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 26 remaining) [2024-01-29 14:21:08,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 26 remaining) [2024-01-29 14:21:08,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 26 remaining) [2024-01-29 14:21:08,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 26 remaining) [2024-01-29 14:21:08,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 26 remaining) [2024-01-29 14:21:08,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 26 remaining) [2024-01-29 14:21:08,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 26 remaining) [2024-01-29 14:21:08,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (10 of 26 remaining) [2024-01-29 14:21:08,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 26 remaining) [2024-01-29 14:21:08,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 26 remaining) [2024-01-29 14:21:08,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 26 remaining) [2024-01-29 14:21:08,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 26 remaining) [2024-01-29 14:21:08,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 26 remaining) [2024-01-29 14:21:08,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 26 remaining) [2024-01-29 14:21:08,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 26 remaining) [2024-01-29 14:21:08,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 26 remaining) [2024-01-29 14:21:08,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 26 remaining) [2024-01-29 14:21:08,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 26 remaining) [2024-01-29 14:21:08,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-01-29 14:21:08,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-01-29 14:21:08,959 INFO L445 BasicCegarLoop]: Path program histogram: [17, 2, 2, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:08,964 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-29 14:21:08,964 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-29 14:21:08,968 INFO L503 ceAbstractionStarter]: Automizer considered 15 witness invariants [2024-01-29 14:21:08,968 INFO L504 ceAbstractionStarter]: WitnessConsidered=15 [2024-01-29 14:21:08,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.01 02:21:08 BasicIcfg [2024-01-29 14:21:08,969 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-29 14:21:08,970 INFO L158 Benchmark]: Toolchain (without parser) took 39980.51ms. Allocated memory was 148.9MB in the beginning and 7.5GB in the end (delta: 7.4GB). Free memory was 89.9MB in the beginning and 6.5GB in the end (delta: -6.4GB). Peak memory consumption was 932.0MB. Max. memory is 16.1GB. [2024-01-29 14:21:08,970 INFO L158 Benchmark]: Witness Parser took 0.20ms. Allocated memory is still 148.9MB. Free memory is still 108.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-29 14:21:08,970 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 148.9MB. Free memory is still 106.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-29 14:21:08,970 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.20ms. Allocated memory is still 148.9MB. Free memory was 89.6MB in the beginning and 75.7MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-01-29 14:21:08,971 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.28ms. Allocated memory is still 148.9MB. Free memory was 75.7MB in the beginning and 74.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-29 14:21:08,971 INFO L158 Benchmark]: Boogie Preprocessor took 41.64ms. Allocated memory is still 148.9MB. Free memory was 74.0MB in the beginning and 71.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-29 14:21:08,971 INFO L158 Benchmark]: RCFGBuilder took 521.42ms. Allocated memory is still 148.9MB. Free memory was 71.9MB in the beginning and 100.2MB in the end (delta: -28.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-01-29 14:21:08,972 INFO L158 Benchmark]: TraceAbstraction took 39080.70ms. Allocated memory was 148.9MB in the beginning and 7.5GB in the end (delta: 7.4GB). Free memory was 99.6MB in the beginning and 6.5GB in the end (delta: -6.4GB). Peak memory consumption was 942.4MB. Max. memory is 16.1GB. [2024-01-29 14:21:08,973 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.20ms. Allocated memory is still 148.9MB. Free memory is still 108.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.19ms. Allocated memory is still 148.9MB. Free memory is still 106.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.20ms. Allocated memory is still 148.9MB. Free memory was 89.6MB in the beginning and 75.7MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.28ms. Allocated memory is still 148.9MB. Free memory was 75.7MB in the beginning and 74.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.64ms. Allocated memory is still 148.9MB. Free memory was 74.0MB in the beginning and 71.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 521.42ms. Allocated memory is still 148.9MB. Free memory was 71.9MB in the beginning and 100.2MB in the end (delta: -28.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 39080.70ms. Allocated memory was 148.9MB in the beginning and 7.5GB in the end (delta: 7.4GB). Free memory was 99.6MB in the beginning and 6.5GB in the end (delta: -6.4GB). Peak memory consumption was 942.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 41]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 42]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 45]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 41]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 49]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 50]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 53]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 49]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 59]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 59]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 59]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 59]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 59]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 59]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 60]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 70]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 72 locations, 26 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 38.9s, OverallIterations: 27, TraceHistogramMax: 3, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.0s, AutomataDifference: 27.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3307 SdHoareTripleChecker+Valid, 5.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3030 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 610 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9545 IncrementalHoareTripleChecker+Invalid, 10155 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 610 mSolverCounterUnsat, 22 mSDtfsCounter, 9545 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1461 GetRequests, 1088 SyntacticMatches, 8 SemanticMatches, 365 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1819 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30802occurred in iteration=24, InterpolantAutomatonStates: 328, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 1440 NumberOfCodeBlocks, 1437 NumberOfCodeBlocksAsserted, 73 NumberOfCheckSat, 1890 ConstructedInterpolants, 0 QuantifiedInterpolants, 7238 SizeOfPredicates, 9 NumberOfNonLiveVariables, 2867 ConjunctsInSsa, 131 ConjunctsInUnsatCore, 59 InterpolantComputations, 14 PerfectInterpolantSequences, 250/521 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-29 14:21:09,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE